WO2022110177A1 - 自适应峰均比papr抑制装置、方法以及通信设备 - Google Patents
自适应峰均比papr抑制装置、方法以及通信设备 Download PDFInfo
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- WO2022110177A1 WO2022110177A1 PCT/CN2020/132856 CN2020132856W WO2022110177A1 WO 2022110177 A1 WO2022110177 A1 WO 2022110177A1 CN 2020132856 W CN2020132856 W CN 2020132856W WO 2022110177 A1 WO2022110177 A1 WO 2022110177A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/2623—Reduction thereof by clipping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
Definitions
- the present application relates to the field of communication technologies, and in particular, to an adaptive peak-to-average ratio PAPR suppression apparatus, method, and communication device.
- OFDM Orthogonal Frequency Division Multiplexing
- the multi-carriers are orthogonal. Since OFDM is composed of multiple independently modulated sub-carrier signals, when When the phases of each sub-carrier are the same or similar, the superimposed signal will generate a larger instantaneous power peak, which will bring a higher peak-to-average power ratio (PAPR, Peak to Average Power Ratio), also known as the peak-to-average ratio.
- PAPR Peak to Average Power Ratio
- the transmitter designs a clipping algorithm on the intermediate frequency side to reduce PAPR, protect the power amplifier, and improve the efficiency of the power amplifier.
- an adaptive peak-to-average ratio PAPR suppression device, method and communication equipment are proposed.
- the PAPR suppression is performed through the cooperation of two-stage clipping modules.
- the implementation method is simple, adapts to multiple scenarios, and ensures no missing clipping and PAPR controllable. , to protect the amplifier.
- an embodiment of the present application provides an adaptive peak-to-average ratio PAPR suppression device, the device includes: a first clipping module and a second clipping module, the second clipping module reports to the first clipping module A clipping module outputs a signal to be clipped that satisfies an input condition of the first clipping module, where the input condition includes a peak distribution characteristic of the input signal; the first clipping module performs a first clipping process on the signal to be clipped A clipping process obtains a first clipped signal.
- PAPR suppression is performed through the cooperation of two-stage clipping modules.
- the above-mentioned embodiments of the present application can adapt to many Scenarios to ensure no missing clipping, controllable PAPR, and protect the power amplifier; compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical characteristics in the present application is more efficient. It is simple, and solves the technical problems of excessively complex static clipping algorithms or limited application scenarios in the related art.
- the second clipping module is configured to acquire an input signal, and when the carrier parameter of the input signal does not meet the input condition of the first clipping module, the The carrier parameter of the input signal and the input condition perform a second clipping process on the input signal to obtain the signal to be clipped.
- the second clipping module is configured to acquire the input signal, where the carrier parameter of the input signal is When the input condition of the first clipping module is satisfied, the input signal is output to the first clipping module as a signal to be clipped.
- the second clipping module is further configured to acquire the input signal, and output the input signal to the first clipping module module;
- the first clipping module is configured to perform a third clipping process on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal; wherein the clipping parameter is a statistical feature according to the peak distribution of the input signal , configured for different carriers.
- the carrier parameter is an inter-carrier power ratio
- the clipping parameter is a weighting coefficient of clipping noise
- the adaptive weighted distribution of clipping noise by the first clipping module is realized.
- the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no missing clipping, controllable PAPR, and protect the power amplifier.
- the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- the input condition of the first clipping module is a static first inter-carrier statistical feature
- the second clipping module is configured to, when the carrier parameter of the input signal does not satisfy the first inter-carrier statistical feature, perform a filtering operation on the input signal according to the carrier parameter of the input signal and the first inter-carrier statistical feature. a second clipping process to obtain the signal to be clipped;
- the first clipping module is configured to perform a first clipping process on the signal to be clipped according to a clipping parameter corresponding to a first inter-carrier statistical feature to obtain the first clipped signal.
- the second clipping module can adaptively start the clipping process according to the relationship between the statistical characteristics of the input signal and the first carrier, and perform the clipping process on the input signal. It is suitable for PAPR control of any scene signal, and the implementation is simple.
- the input condition of the first clipping module is a dynamic second inter-carrier statistical feature, wherein the first clipping module The wave module is configured to periodically update the second carrier statistic and the clipping parameter corresponding to the second carrier statistic,
- the second clipping module is configured to, when the carrier parameter of the input signal does not satisfy the second inter-carrier statistic, perform the filtering on the input signal according to the carrier parameter of the input signal and the second inter-carrier statistic. a second clipping process to obtain the signal to be clipped;
- the first clipping module is configured to perform a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the second inter-carrier statistical feature to obtain the first clipped signal.
- the second clipping module is used to adaptively enable clipping processing according to the relationship between the statistical characteristics between the input signal and the second carrier, and perform clipping processing on the input signal.
- a clipping module periodically counts the inter-carrier characteristics of the input signal, and updates the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters according to the statistical inter-carrier characteristics, and can also implement adaptive clipping processing.
- the carrier parameter, the first inter-carrier statistical feature, and the second carrier statistical feature of the input signal include inter-carrier statistics power ratio.
- embodiments of the present application provide a communication device, including the adaptive peak-to-average ratio PAPR suppression apparatus described in any one of the implementation manners of the first aspect.
- embodiments of the present application provide a communication system, the communication system includes a baseband unit BBU, and the communication system further includes a remote radio unit RRU or an active antenna processing unit AAU; as in any of the first aspect
- the first clipping module described in one implementation is located in the RRU or the AAU
- the second clipping module described in any implementation in the first aspect is located in the BBU; or, as in any one of the first aspects Implementation Mode Both the first clipping module and the second clipping module are located in the RRU or the AAU.
- an embodiment of the present application provides an adaptive peak-to-average ratio PAPR suppression method, the method is applied to a communication device, and the method includes:
- the communication device performs a second clipping process on an input signal whose carrier parameter does not meet the input condition to obtain a signal to be clipped, and performs a first clipping process on the signal to be clipped to obtain a first clipped signal; wherein the input condition It includes the peak distribution characteristics of the input signal, and the carrier parameter of the signal to be clipped satisfies the input condition.
- the PAPR suppression method of the present application performs preprocessing (second clipping processing) on the input signal that does not satisfy the peak distribution characteristics, to obtain the to-be-clipped signal that satisfies the peak distribution characteristics, and then performs the first clipping processing on the to-be-clipped signal, The first clipped signal is obtained.
- the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protection Power amplifier; compared with the method that needs to extract each peak and perform clipping processing in severe scenes, the method of pre-configuring clipping parameters according to statistical characteristics and preprocessing the input signal in the present application is simpler to implement and solves the problem. It solves the technical problems that the static clipping algorithm in the related art is too complicated or the application scene is limited.
- the communication device performs a second clipping process on the input signal whose carrier parameter does not meet the input condition to obtain the signal to be clipped, including:
- the communication device When the carrier parameter of the input signal does not meet the input condition, the communication device performs a second clipping process on the input signal according to the carrier parameter of the input signal and the input condition, to obtain the to-be-clipped wave signal.
- the method further includes: the communication device performs a first clipping on the input signal whose carrier parameter meets the input condition wave processing to obtain the first clipped signal.
- the PAPR suppression method of the above-mentioned embodiments of the present application according to the relationship between the carrier parameters of the input signal and the input conditions, different clipping processes are adopted for the input signal, compared with the simple clipping parameter in the related art (typical scenario). configuration, the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no leakage clipping, controllable PAPR, and protect the power amplifier; The feature pre-configures the clipping parameters and preprocesses the input signal, which is simpler to implement, and solves the technical problems of excessively complex static clipping algorithms or limited application scenarios in the related art.
- the method further includes:
- the communication device performs a third clipping process on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal; wherein the clipping parameter is a statistical feature according to the peak distribution of the input signal, which is a different carrier wave. configured.
- the carrier parameter is an inter-carrier power ratio
- the clipping parameter is a weighting coefficient of clipping noise
- the PAPR suppression method of the above-mentioned embodiments of the present application by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal, the adaptive weighted allocation of clipping noise by the communication device is realized, compared with Regarding the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protecting the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- the input condition is a static first inter-carrier statistical feature
- the communication device When the carrier parameter of the input signal does not meet the input condition, the communication device performs a second clipping process on the input signal according to the carrier parameter of the input signal and the input condition, to obtain the to-be-clipped Wave signals, including:
- the communication device When the carrier parameter of the input signal does not satisfy the first inter-carrier statistical feature, the communication device performs a second clipping on the input signal according to the carrier parameter of the input signal and the first inter-carrier statistical feature. wave processing to obtain the signal to be clipped;
- the communication device performs a first clipping process on the signal to be clipped to obtain a first clipped signal, including:
- the communication device performs a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the first inter-carrier statistical feature to obtain the first clipped signal.
- the method further includes:
- the communication device configures clipping parameters corresponding to the first inter-carrier statistical characteristic according to the first inter-carrier statistical characteristic.
- the process of adaptively enabling clipping processing and performing clipping processing on the input signal according to the relationship between the statistical characteristics between the input signal and the first carrier can adapt to any scene signal.
- PAPR control, and the implementation is simple.
- the input condition is a dynamic second carrier statistical feature
- the method further includes:
- the communication device periodically acquires a new statistical feature of the second carrier, and configures clipping parameters corresponding to the statistical feature of the new second carrier according to the new statistical feature of the second carrier.
- the communication device when the carrier parameter of the input signal does not satisfy the input condition, the communication device The parameters and the input conditions perform a second clipping process on the input signal to obtain the signal to be clipped, including:
- the communication device When the carrier parameter of the input signal does not satisfy the second inter-carrier statistical feature, the communication device performs a second clipping process on the input signal according to the carrier parameter of the input signal and the second inter-carrier statistical feature , to obtain the signal to be clipped;
- the communication device performs a first clipping process on the signal to be clipped to obtain a first clipped signal, including:
- the communication device performs a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the second inter-carrier statistical feature to obtain the first clipped signal.
- the PAPR suppression method of the above-mentioned embodiments of the present application through the process of adaptively enabling the second clipping process and performing the second clipping process on the input signal according to the relationship between the statistical characteristics between the input signal and the second carrier, the periodic The inter-carrier characteristics of the input signal are counted, and the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters are updated according to the statistical inter-carrier characteristics, and an adaptive first clipping process can also be implemented.
- the PAPR control of any scene signal can be adapted, and the implementation is simple.
- the carrier parameter of the input signal, the statistical characteristics between the first carriers, and the second carrier is the power ratio between carriers.
- an embodiment of the present application provides an adaptive peak-to-average ratio PAPR suppression apparatus, the apparatus is applied to communication equipment, and the apparatus includes:
- a clipping unit configured to perform a second clipping process on an input signal whose carrier parameter does not meet the input conditions to obtain a signal to be clipped, and perform a first clipping process on the signal to be clipped to obtain a first clipped signal; wherein, the The input condition includes peak distribution characteristics of the input signal, and the carrier parameter of the signal to be clipped satisfies the input condition.
- the PAPR suppression device of the present application performs preprocessing (second clipping processing) on the input signal that does not satisfy the peak distribution characteristics, to obtain the to-be-clipped signal that satisfies the peak distribution characteristics, and then performs the first clipping processing on the to-be-clipped signal, The first clipped signal is obtained.
- the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protection Power amplifier; compared with the method that needs to extract each peak and perform clipping processing in severe scenes, the method of pre-configuring clipping parameters according to statistical characteristics and preprocessing the input signal in the present application is simpler to implement and solves the problem. It solves the technical problems that the static clipping algorithm in the related art is too complicated or the application scene is limited.
- the clipping unit includes:
- a second clipping module configured to perform a second clipping process on the input signal according to the carrier parameter of the input signal and the input condition when the carrier parameter of the input signal does not meet the input condition, to obtain the signal to be clipped.
- the apparatus further includes:
- the first clipping module is configured to perform a first clipping process on an input signal whose carrier parameter meets the input condition to obtain a first clipped signal.
- the PAPR suppression device of the above-mentioned embodiments of the present application according to the relationship between the carrier parameters of the input signal and the input conditions, different clipping processes are adopted for the input signal, compared with the simple clipping parameter in the related art (typical scenario). configuration, the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no leakage clipping, controllable PAPR, and protect the power amplifier; The feature pre-configures the clipping parameters and preprocesses the input signal, which is simpler to implement, and solves the technical problems of excessively complex static clipping algorithms or limited application scenarios in the related art.
- the apparatus further includes:
- the third clipping module is configured to perform third clipping processing on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal; wherein the clipping parameter is a statistical feature according to the peak distribution of the input signal, configured for different carriers.
- the carrier parameter is an inter-carrier power ratio
- the clipping parameter is a weighting coefficient of clipping noise
- the PAPR suppression apparatus of the above-mentioned embodiments of the present application by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal, the adaptive weighted distribution of the clipping noise by the communication device is realized, compared with Regarding the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protecting the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- the input condition is a static first inter-carrier statistical feature
- the second clipping module is further configured to, when the carrier parameter of the input signal does not satisfy the first inter-carrier statistical feature, perform a The input signal is subjected to a second clipping process to obtain the signal to be clipped;
- the first clipping module is further configured to perform a first clipping process on the signal to be clipped according to clipping parameters corresponding to the first inter-carrier statistical characteristics to obtain the first clipped signal.
- the apparatus further includes:
- a first configuration module configured to configure clipping parameters corresponding to the first inter-carrier statistical characteristic according to the first inter-carrier statistical characteristic.
- PAPR suppression apparatus by adaptively enabling clipping processing and clipping the input signal according to the relationship between the statistical characteristics between the input signal and the first carrier, it is possible to adapt to any scene signal.
- PAPR control, and the implementation is simple.
- the input condition is a dynamic second carrier statistical feature
- the apparatus further includes:
- the second configuration module is configured to periodically acquire a new statistical feature of the second carrier, and configure clipping parameters corresponding to the statistical feature of the new second carrier according to the new statistical feature of the second carrier.
- the second clipping module is further configured to, when the carrier parameter of the input signal does not satisfy the second inter-carrier statistical feature , performing a second clipping process on the input signal according to the carrier parameter of the input signal and the statistical characteristics between the second carriers to obtain the signal to be clipped;
- the first clipping module is further configured to perform a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the second inter-carrier statistical feature to obtain the first clipped signal.
- the PAPR suppression device of the above-mentioned embodiments of the present application through the process of adaptively enabling the second clipping process and performing the second clipping process on the input signal according to the relationship between the statistical characteristics between the input signal and the second carrier, the periodic The inter-carrier characteristics of the input signal are counted, and the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters are updated according to the statistical inter-carrier characteristics, and an adaptive first clipping process can also be implemented.
- the PAPR control of any scene signal can be adapted, and the implementation is simple.
- the statistical feature is the power ratio between carriers.
- an adaptive peak-to-average ratio PAPR suppression device including:
- processors a processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the method of the fourth aspect or any one of the implementation manners of the fourth aspect when executing the instructions.
- embodiments of the present application provide a non-volatile computer-readable storage medium on which computer program instructions are stored, and when the computer program instructions are executed by a processor, implement the fourth aspect or the fourth aspect. Any one of the methods described in the implementation manner.
- an embodiment of the present application provides a terminal device, and the terminal device can execute the above-mentioned fourth aspect or one or more of the PAPR suppression methods in multiple possible implementation manners of the fourth aspect.
- embodiments of the present application provide a computer program product, comprising computer-readable codes, or a non-volatile computer-readable storage medium carrying computer-readable codes, when the computer-readable codes are stored in an electronic
- the processor in the electronic device executes the fourth aspect or one or more of the PAPR suppression methods in the multiple possible implementation manners of the fourth aspect.
- 1a and 1b respectively illustrate examples of clipping scenarios in the related art.
- FIG. 2 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- FIG. 3 shows a schematic diagram of an application scenario according to an embodiment of the present application.
- FIG. 4 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- FIG. 5 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- FIG. 6 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- FIG. 7 shows a block diagram of a communication device according to an embodiment of the present application.
- FIG. 8 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- FIG. 9 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- FIG. 10 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- FIG. 11 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- FIG. 12 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- FIG. 13 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- FIG. 14 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- Clipping For signals with large peaks, set a threshold to suppress the peaks exceeding the threshold. The process of clipping is called clipping.
- Clipping Noise The difference between the original signal and the clipping threshold.
- Carrier parameter The characteristic parameter of the carrier of the signal, such as the modulation method of the carrier, spectrum occupancy, power spectral density, or the instantaneous information between the carriers, etc.
- the instantaneous information between the carriers may include the power ratio between the carriers, etc.
- the modulation mode of the carrier may refer to different modulation modes such as the phase and amplitude of the data carried by the carrier, and the spectrum occupancy of the carrier may refer to the spectrum width occupied by the carrier, the location of the carrier frequency, and the like.
- the instantaneous information between carriers may refer to information about parameter relationships between carriers at a certain moment, and the power allocation ratio between carriers may refer to the ratio of power configuration between different carriers.
- Statistical features between carriers the statistical results of the relationship between the parameters of the input signal carriers within a certain period of time.
- the IF clipping algorithm is designed according to the most severe scenario, the implementation cost is high and the complexity is high; if the IF clipping algorithm is designed according to the typical scenario, although the implementation complexity is reduced, its adaptability is poor, and when the signal peaks Leakage will occur when the characteristics change, which will affect the robustness of the power amplifier.
- FIG. 1a and 1b respectively illustrate examples of clipping scenarios in the related art.
- the power characteristics of the input signal are turned on, resulting in a very dense peak distribution of the input signal, as shown in Figure 1a.
- the power characteristics of the input signal are not turned on, the peak distribution characteristics of the input signal do not change (or change little), and the peak distribution of the input signal is sparse, as shown in Figure 1b.
- the clipping processing can be performed according to the typical scene design, but the applicable scene of the clipping processing method is limited, and the application of the clipping processing method in complex scenes may cause some peaks to be missed.
- the technical problem to be solved by the present application is that the intermediate frequency static clipping algorithm in the related art is too complicated or has limited application scenarios.
- FIG. 2 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- FIG. 3 shows a schematic diagram of an application scenario according to an embodiment of the present application.
- the communication device may include BBU (Building Baseband Unit, baseband unit), and RRU (Radio Remote Unit, remote radio unit) and/or AAU (Active Antenna Unit, active antenna processing unit) ).
- BBU Building Baseband Unit, baseband unit
- RRU Radio Remote Unit, remote radio unit
- AAU Active Antenna Unit, active antenna processing unit
- the RRU can be hung on the wall of the equipment room, the BBU can be installed in a standard cabinet, and the RRU and the antenna are connected by feeders; or the RRU can be installed on the tower, the BBU and the RRU are connected by optical fibers, and the RRU and the antenna are connected by jumpers connect.
- 4G the 4th generation, the fourth generation of mobile communication technology
- the traditional integrated macro base station is completely replaced by the BBU+RRU+antenna mode, and some BBUs are unified in a computer room to form a BBU pool.
- 5G (5th-Generation, fifth-generation mobile communication technology) introduced Massive MIMO (multiple-in multiple-out, multiple-in-multiple-out) technology, so AAU appeared.
- the PAPR suppression apparatus of the embodiment provided in this application may include the first clipping module 11 and the second clipping module 12 shown in FIG. 2 .
- the input terminal of the second clipping module 12 is used for receiving input signals
- the output terminal of the second clipping module 12 is connected to the input terminal of the first clipping module 11
- the first clipping module 12 is connected to the input terminal of the first clipping module 11 .
- the output terminal of the wave module 11 outputs the clipped signal.
- the input condition includes peak distribution characteristics of the input signal.
- the peak distribution characteristics of the input signal may include statistical characteristics of the peak distribution of the input signal, and the peak distribution characteristics of the input signal are mainly affected by factors such as the power ratio between carriers of the input signal, the modulation mode of the carrier, and the spectrum occupancy.
- the inter-carrier power ratio may refer to the ratio of power configuration between different carriers
- the modulation mode of the carrier may refer to different modulation modes such as the phase and amplitude of the data carried by the carrier
- the spectrum occupancy of the carrier may refer to the carrier occupancy the frequency spectrum width, the position of the carrier frequency point, etc.
- the first clipping module 11 may include clipping parameters configured according to the statistical characteristics of the peak distribution of the input signal.
- the first clipping module 11 can The carrier parameter and the clipping parameter of the input signal perform a first clipping process on the input signal.
- the clipping parameter may refer to data related to the allocation method of clipping noise, for example, the ratio of clipping noise allocation when clipping different carriers, or Weighting coefficient of clipping noise corresponding to different carriers when clipping is performed on different carriers.
- the first clipping module 11 is configured with a noise allocation during clipping when the inter-carrier power ratio of the input signal is 1:1
- the ratio is also 1:1.
- the first clipping module 11 can perform the operation on the input signal according to the configured clipping parameters (the clipping noise distribution ratio of 1:1). The first clipping process.
- the second clipping module 12 can output to the first clipping module 11 a signal to be clipped that satisfies the input conditions of the first clipping module 11, and the first clipping module can A first clipping signal is obtained by performing a first clipping process on the signal to be clipped.
- the second clipping module 12 is configured to determine whether to enable the second clipping process for the input signal according to whether the carrier parameter of the input signal satisfies the input condition of the first clipping module 11 .
- the second clipping module 12 is configured to acquire the input signal, and when the carrier parameter of the input signal satisfies the input condition of the first clipping module 11, the input signal is It is output to the first clipping module 11 as the signal to be clipped.
- the second clipping module 12 may not turn on the second clipping process on the input signal, or, in other words, turn off the first clipping process on the input signal.
- Second clipping processing that is, the second clipping module 12 may not perform the second clipping processing on the input signal when the carrier parameter of the input signal satisfies the input condition of the first clipping module 11 .
- the second clipping module 12 is configured to acquire an input signal, and when the carrier parameter of the input signal does not meet the input conditions of the first clipping module 11, according to the The carrier parameter of the input signal and the input condition perform a second clipping process on the input signal to obtain the signal to be clipped.
- the second clipping module 12 may determine to enable the second clipping process on the input signal when the carrier parameter of the input signal does not meet the input condition of the first clipping module 11 .
- a second clipping process may be performed on the input signal, and the carrier parameter of the signal to be clipped after the second clipping process satisfies the input condition of the first clipping module 11.
- the second clipping module 12 can be used to preprocess the input signal (the second clipping process) when the carrier parameter of the input signal does not meet the input conditions of the first clipping module 11 .
- the carrier parameter of the clipped signal satisfies the input condition of the first clipping module 11 , so that the first clipping module 11 can perform a first clipping process on the signal to be clipped to obtain the first clipped signal.
- the first clipping module 11 may be located in the RRU or AAU on the intermediate frequency side
- the second clipping module 12 may be located in the BBU on the baseband side, or may be located in the RRU or AAU on the intermediate frequency side.
- the intermediate frequency clipping processing of the input signal is realized by the cooperation of the first clipping module 11 and the second clipping module 12 .
- PAPR suppression is performed through the cooperation of two-stage clipping modules.
- the above-mentioned embodiments of the present application can adapt to many Scenarios to ensure no missing clipping, controllable PAPR, and protect the power amplifier; compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical characteristics in the present application is more efficient. It is simple, and solves the technical problems of excessively complex static clipping algorithms or limited application scenarios in the related art.
- the second clipping module 12 is further configured to acquire the input signal, and output the input signal to the first clipping module 11; the first clipping module 11 is configured to The clipping parameter corresponding to the carrier parameter of the input signal performs a third clipping process on the input signal; wherein the clipping parameter is configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- the second clipping module 12 may not be deployed, and the first clipping module 11 directly obtains the input signal, and performs third clipping processing on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal.
- the carrier parameter may be a power ratio between carriers
- the clipping parameter may be a weighting coefficient of clipping noise
- the first clipping module 11 is used for clipping parameters corresponding to the power ratio between carriers Determines the weighting factor for clipping noise.
- the clipping parameter is configured for different carriers according to the statistical characteristics of the peak distribution of the input signal
- the first clipping module can adaptively adjust the weighting coefficient of the clipping noise according to the power ratio between the carriers of the input signal , and perform a third clipping process on the input signal according to the weighting coefficient of the clipping noise.
- the adaptive weighting of the clipping noise by the first clipping module 11 is realized by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal. Allocation, compared with the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no missing clipping, controllable PAPR, and protect the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- clipping noise can be allocated adaptively according to the power ratio between carriers, which can better allocate clipping noise and ensure system performance.
- the PAPR suppression device of the present application will be described in detail in several different embodiments below.
- the second clipping module 12 is bypassed, and the first clipping module 11 clips adaptively.
- FIG. 4 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- the input conditions of the first clipping module 11 can be set to be relatively broad, so that all input signals can meet the input conditions.
- the second clipping module 12 can work in the bypass mode, and the input signal is not affected.
- the second clipping module 12 can directly output the input signal to the input end of the first clipping module 11 after acquiring the input signal.
- the second clipping module 12 is represented as a dashed box, and works in a bypass mode.
- the second clipping module 12 may not be deployed, and only the first clipping module 11 may be deployed.
- the first clipping module 11 can directly acquire the input signal, and perform a third clipping process on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal.
- the corresponding clipping parameters can be configured on the first clipping module 11 according to the statistical characteristics of the peak distribution of the input signal, and the statistical characteristics of the peak distribution can be the carrier wave Features, such as inter-carrier power configuration, carrier modulation, and carrier spectrum occupancy.
- different clipping parameters can be configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- the first clipping module 11 can be based on the carrier parameters of the input signal and the statistical characteristics of the carrier.
- the clipping parameter configured by the feature adaptively performs the third clipping process on the input signal.
- different carriers of the input signal and clipping parameters corresponding to different carriers may be recorded in the form of a table.
- the first clipping module 11 can look up the table according to the carrier parameter of the input signal to obtain the corresponding clipping parameter.
- the first clipping module 11 can be configured with 1:2 and 1:2 and The clipping parameters corresponding to 1:1 respectively. For example, when the inter-carrier power ratio is 1:2, the corresponding clipping noise weighting coefficient is 1:2, and when the inter-carrier power ratio is 1:1, The corresponding clipping noise has a weighting factor of 1:1.
- the first clipping module 11 when the first clipping module 11 receives the input signal, if the inter-carrier power ratio of the input signal is determined to be 1:2 according to the instantaneous information of the input signal, the first clipping module 11 can use the weighting coefficient of clipping noise 1:2 respectively perform the third clipping processing on the input signal, that is to say, the allocation ratio of clipping noise between carriers during clipping is 1:2, as shown in Figure 4, the power ratio between carriers is 1:2 When clipping, the input signal with low power corresponds to low clipping noise (1), and the input signal with high power corresponds to high clipping noise (2).
- the third clipping process can be performed on the input signal by using the weighting coefficient of the clipping noise of 1:1.
- the distribution ratio of the clipping noise between the two carriers is 1:1.
- the clipping noise of the carriers is also in a 1:1 relationship during clipping, that is, The clipping noise is the same for both carrier assignments. It should be noted that the first clipping module 11 shown in FIG.
- 4 is only some examples of the present application, and does not limit the present application in any way, and can also be based on other inter-carrier power ratios (for example, 1:5,1 : 10, etc.) to set the corresponding clipping parameters, and can also configure the corresponding clipping parameters according to the statistical characteristics of other instantaneous information between carriers, for example, according to the modulation method between carriers, spectrum occupancy and other instantaneous information Statistical features configure the corresponding clipping parameters.
- inter-carrier power ratios for example, 1:5,1 : 10, etc.
- the adaptive weighting of the clipping noise by the first clipping module 11 is realized by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal. Allocation, compared with the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no missing clipping, controllable PAPR, and protect the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- clipping noise can be allocated adaptively according to the power ratio between carriers, which can better allocate clipping noise and ensure system performance.
- a second clipping module may be deployed in the communication device, or the second clipping module already deployed in the communication device determines whether to enable clipping according to the carrier parameter of the input signal and the input condition, Signals are not bypassed.
- the second clipping module can output to the first clipping module a signal to be clipped that meets the input conditions of the first clipping module, and the first clipping module performs a first clipping process on the signal to be clipped The first clipped signal is obtained.
- the second clipping module is configured to, when the carrier parameter of the input signal does not meet the input condition of the first clipping module, perform the filtering of the input signal according to the carrier parameter of the input signal and the input condition.
- the signal is subjected to a second clipping process to obtain the signal to be clipped; when the carrier parameter of the input signal meets the input conditions of the first clipping module, the input signal is output to the signal to be clipped as the signal to be clipped. Describe the first clipping module.
- the second clipping module 12 when the carrier parameter of the input signal does not satisfy the input condition of the first clipping module 11, the second clipping module 12 performs the second clipping process on the input signal according to the carrier parameter and the input condition of the input signal, and obtains the For the clipped signal, the carrier parameter of the signal to be clipped can meet the input conditions of the first clipping module. Then, the first clipping module 11 performs a first clipping process on the signal to be clipped to obtain a first clipped signal.
- the process of adaptive clipping is realized through the cooperation between the two clipping modules, and the implementation manner is simple and can be adapted to more application scenarios.
- the apparatus for suppressing PAPR in this embodiment may also include a variety of different implementation manners.
- the first clipping module 11 may be an adaptive clipping module, or may not be an adaptive clipping module
- the second clipping module 12 may be a module that adaptively turns on clipping.
- the second clipping module 12 is automatically turned on, and the first clipping module 11 is statically clipped.
- the input condition of the first clipping module may be a static first inter-carrier statistical feature
- the second clipping module is used for when the carrier parameter of the input signal does not satisfy the first inter-carrier statistics
- a second clipping process is performed on the input signal according to the carrier parameter of the input signal and the first inter-carrier statistical feature to obtain the signal to be clipped, the carrier parameter of the signal to be clipped
- the first inter-carrier statistical feature is satisfied;
- the first clipping module is configured to perform a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the first inter-carrier statistical feature, and obtain the first clipping process.
- a clipped signal is configured to perform a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the first inter-carrier statistical feature
- the first inter-carrier statistical feature may be a long-term statistical feature between signal carriers.
- corresponding static clipping parameters may be configured according to the first inter-carrier statistical feature, and the An inter-carrier statistical feature and a corresponding static clipping parameter are updated. Therefore, the first inter-carrier statistical feature is static, and the clipping parameter corresponding to the first inter-carrier statistical feature is a static clipping parameter. In this way, the first clipping module 11 can search for the corresponding static clipping parameter according to the carrier parameter of the input signal, and perform the first clipping process on the input signal according to the found static clipping parameter.
- the second clipping module 12 is responsible for performing a second clipping process on an input signal whose carrier parameters do not satisfy the first inter-carrier statistical characteristics, so as to obtain a to-be-clipped signal that meets the first inter-carrier statistical characteristics.
- the signal to be clipped input to the first clipping module 11 satisfies the entry condition (the first inter-carrier statistical feature) of the first clipping module 11, and the first clipping module 11 can The corresponding clipping parameter performs a first clipping process on the first clipped signal.
- the second clipping module 12 may perform a second clipping process on the input signal according to the carrier parameters of the input signal and the first inter-carrier statistical characteristics, such as That is to say, the second clipping module 12 can perform the second clipping process according to the difference between the carrier parameter of the input signal and the statistical characteristics between the first carriers.
- the clipping parameter on the first clipping module 11 is configured according to the inter-carrier power ratio of 1:1
- the input value of the first clipping module 11 is When the power ratio between the carriers of the input signal satisfies 1:1, the first clipping process can be performed on the input signal according to the configured clipping parameters, and the power ratio between the carriers of the input signal of the second clipping module 12 does not satisfy the At 1:1
- the second clipping module 12 can perform a second clipping process on the input signal, and cut off a part of the peak value of the high-power carrier in advance, so that the signal to be clipped that enters the first clipping module after the second clipping process , even if the first clipping process is performed using the clipping noise weighting coefficient configured when the inter-carrier power ratio is 1:1, no missing clipping will occur.
- FIG. 5 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- the static clipping parameter configured on the first clipping module 11 according to when the inter-carrier power ratio is 1:1 is: the weighting coefficient of clipping noise is 1:1.
- the first clipping module 11 is in an on state.
- the second clipping module 12 When the second clipping module 12 has different carrier parameters (inter-carrier power ratio) of the input signal and statistical characteristics between the first carriers, that is, the inter-carrier power ratio of the input signal does not satisfy the first inter-carrier statistical characteristics (carrier-to-carrier power ratio) power ratio 1:1), the second clipping module 12 can perform second clipping processing on the input signal, and eliminate a part of the peak value of the high-power carrier in advance, so that the second clipping process enters the first clipping module 11 Even if the first clipping process is performed using the clipping noise weighting coefficient configured when the inter-carrier power ratio is 1:1, the signal to be clipped will not be missed clipping.
- the carrier parameters of the two input signals do not satisfy the first inter-carrier statistical feature.
- the first inter-carrier statistical feature as the inter-carrier power ratio as an example
- carrier 2 lends its own power to carrier 1, resulting in an increase in the power within the bandwidth of carrier 1, resulting in a deviation of the power ratio between carrier 1 and carrier 2 from 1:1, and the first clipping module 11 will leak Clipping
- the second clipping module 12 is turned on, and the carrier 1 is clipped, and a part of the peak value is eliminated in advance to ensure that the signal to be clipped sent to the first clipping module 11 satisfies the peak distribution characteristics, ensuring that the first clipping
- the module 11 has no leakage clipping; since the carrier 2 is a power lender, the peak-to-average ratio is no problem for the power amplifier, so the second clipping module 12 does not clip the carrier 2 and directly sends it to the first clipping module 11 .
- the second clipping module 12 cuts off part of the power of the carrier 1 so that the peak-to-average ratio of the carrier 1 and the carrier 2 satisfies 1:1, and then sends it to the first clipping module 11 .
- the first inter-carrier statistical feature as the power spectral density as an example
- the power of part of the bandwidth (dashed line 5M) is lent to another bandwidth (narrow solid line 5M), resulting in Fig.
- the power in the narrow solid line bandwidth shown in 5 increases, and the first clipping module 11 will have leakage clipping.
- the second clipping module 12 is turned on, and the carrier 1 is clipped to eliminate part of the peaks in advance to ensure that The signal sent to the first clipping module 11 satisfies the peak distribution characteristics, ensuring that the clipping module 1 has no missing clipping, and the carrier 2 does not borrow power, so the second clipping module 12 does not clip the carrier 2, and directly sends it to the first clipping module 12.
- the second clipping module 12 adaptively starts the clipping process according to the relationship between the statistical characteristics between the input signal and the first carrier, and performs the clipping process on the input signal, It can adapt to the PAPR control of any scene signal, and the implementation is simple.
- the second clipping module 12 is adaptively enabled, and the first clipping module 11 is adaptively clipped.
- the input condition of the first clipping module is a dynamic second carrier statistical feature, wherein the first clipping module is further used for the second carrier statistical feature and the second carrier statistical feature
- the clipping parameters corresponding to the feature are periodically updated.
- the second clipping module is configured to, when the carrier parameter of the input signal does not satisfy the second inter-carrier statistical feature, perform a second cut on the input signal according to the carrier parameter of the input signal and the second inter-carrier statistical feature. Clipping processing to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped meets the second inter-carrier statistical feature; the first clipping module is used for clipping corresponding to the second inter-carrier statistical feature The parameter performs a first clipping process on the signal to be clipped to obtain the first clipped signal.
- the second inter-carrier statistical feature may be a short-term inter-carrier statistical feature obtained by periodic statistics.
- the first clipping module 11 may configure corresponding clipping parameters according to the new second inter-carrier statistical features obtained by statistics in each period, that is, periodically update the configured clipping parameters according to the statistical period.
- the time length of each cycle may be determined according to a specific application scenario, which is not limited in this application. Therefore, the first clipping module 11 can also perform adaptive clipping processing on the input signal as time changes.
- the processing process of the input signal by the second clipping module 12 is the same as that of the previous embodiment, except that when judging whether the carrier parameter of the input signal satisfies the second inter-carrier statistical characteristics as time changes, the second inter-carrier statistical Features also change over time.
- the second clipping module 12 performs the second clipping processing on the input signal, the referenced second inter-carrier statistical feature also changes periodically with time.
- FIG. 6 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application.
- the clipping parameters configured on the first clipping module 11 according to the inter-carrier power ratio of 1:1 or 1:2 are: a weighting coefficient of clipping noise of 1:1 or 1:2 .
- the first clipping module 11 is in an on state.
- the first The second clipping module 12 can perform a second clipping process on the input signal to obtain a signal to be clipped that satisfies the statistical characteristics between the second carriers, and outputs the signal to be clipped to the first clipping module 11 .
- the second inter-carrier power configuration 1:1 and 1:2 configured on the first clipping module 11 and the corresponding clipping noise weighting coefficient 1:1 or 1:2 can be based on the statistical characteristics of the new cycle and the corresponding clipping noise. Wave parameters are updated.
- the second clipping module 12 adaptively starts the clipping process according to the relationship between the statistical characteristics between the input signal and the second carrier, and performs the clipping process on the input signal
- the first clipping module 11 periodically counts the inter-carrier characteristics of the input signal, and updates the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters according to the statistical inter-carrier characteristics, which can also implement adaptive clipping processing.
- the present application also provides a PAPR suppression method, which is applied to a communication device.
- the communication device may include: a first clipping module and a second clipping module, wherein the second clipping module The input end of the clipping module is used for receiving input signals, and the output end of the second clipping module is connected to the input end of the first clipping module.
- FIG. 7 shows a block diagram of the communication device according to an embodiment of the present application.
- the communication device shown in FIG. 7 may be a base station.
- the communication device shown in FIG. 7 may include a baseband unit and a radio frequency unit, where the baseband unit may include a BBU.
- the radio unit may include RRU+antenna, and/or, AAU.
- the RRU or AAU may be provided with the PAPR suppression apparatus of the foregoing embodiments of the present application.
- the first clipping module may be located in the RRU or the AAU, and the second clipping module is located in the BBU.
- the communication device may also include one or more processors and one or more memories, the memories may store executable instructions corresponding to the PAPR suppression method provided by the present application, and the processors may be configured to execute the executable instructions stored in the memory.
- the PAPR suppression method provided in this application is implemented.
- connection relationship between the processor and the memory and the baseband unit and the radio frequency unit in FIG. 7 is only an example of the present application, and does not limit the present application in any way.
- processors and memories are provided, respectively.
- the processor can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a central processing unit. It can be a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (MCU) , it can also be a programmable logic device (PLD) or other integrated chips.
- FPGA field programmable gate array
- ASIC application specific integrated circuit
- SoC system on chip
- CPU central processor unit
- NP network processor
- DSP digital signal processing circuit
- MCU microcontroller
- PLD programmable logic device
- the memory can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of storage devices that can store information and instructions Dynamic storage device, the memory can also include non-volatile memory (non-volatile memory), such as flash memory (flash memory), hard disk drive (hard disk drive, HDD) or solid-state drive (solid-state drive, SSD); memory Combinations of the above kinds of memories may also be included.
- non-volatile memory such as flash memory (flash memory), hard disk drive (hard disk drive, HDD) or solid-state drive (solid-state drive, SSD); memory Combinations of the above kinds of memories may also be included.
- the memory can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compressed optical disks) , laser disc, compact disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or any other device capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by a computer Other media, but not limited to this.
- the memory may exist independently and be connected to the processor through a communication line.
- the memory can also be integrated with the processor.
- the memory provided by the embodiments of the present application may generally be non-volatile.
- the memory is used to store the computer-executed instructions involved in executing the solution of the present application, and the execution is controlled by the processor.
- the processor is configured to execute the computer-executed instructions stored in the memory, thereby implementing the method provided by the embodiments of the present application.
- FIG. 8 shows a flowchart of a PAPR suppression method according to an embodiment of the present application. As shown in Figure 8, the method may include the following steps:
- Step S701 the communication device controls the second clipping module to output to the first clipping module a signal to be clipped that satisfies an input condition of the first clipping module, where the input condition includes a peak distribution characteristic of the input signal;
- Step S702 the communication device uses the first clipping module to perform a first clipping process on the signal to be clipped to obtain a first clipped signal.
- the communication device may determine whether to enable the second clipping module for the input signal according to whether the carrier parameter of the input signal satisfies the input condition of the first clipping module The second clipping processing; wherein, the input condition includes the peak distribution characteristics of the input signal.
- FIG. 9 shows a flowchart of a PAPR suppression method according to an embodiment of the present application. As shown in Figure 9, in one possible implementation,
- Step S701 the communication device controls the second clipping module to output to the first clipping module a signal to be clipped that satisfies the input conditions of the first clipping module, which may include:
- Step S7011 when the carrier parameter of the input signal does not meet the input condition of the first clipping module, the second clipping module 12 of the communication device performs the first step on the input signal according to the carrier parameter of the input signal and the input condition. Two clipping processing to obtain the signal to be clipped;
- Step S7012 when the carrier parameter of the input signal satisfies the input condition of the first clipping module, the second clipping module 12 of the communication device outputs the input signal as the signal to be clipped to the first clipping module.
- Wave Module 11 when the carrier parameter of the input signal satisfies the input condition of the first clipping module, the second clipping module 12 of the communication device outputs the input signal as the signal to be clipped to the first clipping module.
- the communication device adopts the second clipping module 12 to perform the second clipping process on the input signal according to the carrier parameter of the input signal and the input condition. , to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped can satisfy the input condition of the first clipping module. Then, the first clipping module 11 is used to perform a first clipping process on the signal to be clipped to obtain a first clipped signal.
- the communication device uses the second clipping module 12 to directly output the input signal as the signal to be clipped to the first clipping module 11, and then uses the first clipping module 12 to directly output the input signal to the first clipping module 11.
- the clipping module 11 performs a first clipping process on the signal to be clipped to obtain a first clipped signal.
- the process of adaptive clipping is realized through the cooperation between the two clipping modules, and the implementation manner is simple and can be adapted to more application scenarios.
- the communication device can determine whether to enable the second clipping of the input signal by the second clipping module 12 according to whether the carrier parameter of the input signal satisfies the input conditions of the first clipping module 11 . deal with.
- the communication device controlling the second clipping module to output to the first clipping module a signal to be clipped that satisfies the input condition of the first clipping module may include: the communication device is in the When the carrier parameter of the input signal satisfies the input condition of the first clipping module, the second clipping module is not turned on.
- the communication device may not enable the clipping processing of the input signal by the second clipping module 12, or, in other words, disable the clipping processing of the input signal, or That is, when the carrier parameter of the input signal satisfies the input condition of the first clipping module 11 , the second clipping module 12 in the communication device outputs the input signal to the first clipping module 11 as the signal to be clipped.
- the communication device uses the first clipping module 11 to perform a first clipping process on the input signal, and the input condition includes the peak distribution characteristic of the input signal.
- the peak distribution characteristics of the input signal may include statistical characteristics of the peak distribution of the input signal, for example, the statistically obtained inter-carrier power ratio of the input signal, the modulation mode of the carrier, the spectrum occupancy of the carrier, and so on. That is to say, the communication device can configure the corresponding clipping parameters on the first clipping module 11 according to the statistical characteristics of the peak distribution of the input signal.
- the communication device can The parameter and the clipping parameter perform a first clipping process on the input signal.
- the communication device controls the second clipping module to output to the first clipping module a signal to be clipped that satisfies the input condition of the first clipping module, and may further include: in the carrier wave of the input signal When the parameters do not meet the input conditions of the first clipping module 11, the communication device controls the second clipping module to perform a second clipping process on the input signal according to the carrier parameters of the input signal and the input conditions, to obtain the signal to be clipped. When the carrier parameter of the input signal does not meet the input condition of the first clipping module 11, the communication device may determine to enable the second clipping module 12 to perform the second clipping process on the input signal according to the carrier parameter of the input signal and the input condition.
- a second clipping process may be performed on the input signal according to the difference between the carrier parameter of the input signal and the input condition to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped satisfies the input condition. Then, the first clipping module 11 performs a first clipping process on the signal to be clipped according to clipping parameters corresponding to the input conditions to obtain a first clipped signal.
- PAPR suppression is performed through the cooperation of two-stage clipping modules.
- the above-mentioned embodiments of the present application can adapt to many scene, to ensure no leakage clipping, PAPR controllable, and protect the power amplifier.
- the method of preconfiguring clipping parameters according to statistical characteristics of the present application is simpler to implement, which solves the problem of the complexity of static clipping algorithms in the related art.
- the method further includes:
- the received input signal is output to the input end of the first clipping module; the communication device adopts the first clipping module A third clipping process is performed on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal; wherein the clipping parameter is configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- the communication device can set the input conditions of the first clipping module 11 to be relatively broad, so that all input signals can meet the input conditions.
- the second clipping module 12 is controlled to work in a bypass mode, without performing any processing on the input signal, and outputting the received input signal to the first clipping module 11 .
- the second clipping module 12 is represented as a dashed box, and works in a bypass mode.
- the corresponding clipping parameters can be configured on the first clipping module 11 according to the statistical characteristics of the peak distribution of the input signal, and the statistical characteristics of the peak distribution can be the carrier wave Features, such as inter-carrier power configuration, carrier modulation, and carrier spectrum occupancy.
- different clipping parameters can be configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- the first clipping module 11 can be based on the carrier parameters of the input signal and the characteristics of the carrier wave.
- the configured clipping parameters can adaptively adjust the weighting coefficient of the clipping noise, and perform clipping processing on the input signal according to the weighting coefficient of the clipping noise.
- the carrier parameter may be a power ratio between carriers
- the clipping parameter may be a clipping noise weighting coefficient
- the communication device adopts the first clipping module according to the input signal The clipping parameter corresponding to the carrier parameter, and performing clipping processing on the input signal, including: the communication device adopts the first clipping module according to the weighting coefficient of the clipping noise corresponding to the power ratio between the carriers, to The input signal is clipped.
- the adaptive weighting of the clipping noise by the first clipping module 11 is realized by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal. Allocation, compared with the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no missing clipping, controllable PAPR, and protect the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- clipping noise can be allocated adaptively according to the power ratio between carriers, which can better allocate clipping noise and ensure system performance.
- the PAPR suppression apparatuses in the embodiments shown in FIG. 8 and FIG. 9 may also include various implementations.
- the first clipping module 11 may be an adaptive clipping module, or may not be an adaptive clipping module.
- the second clipping module 12 may be a module for adaptively enabling clipping.
- the input condition of the first clipping module is a static first inter-carrier statistical feature
- the method further includes: the communication device performs a A clipping parameter corresponding to the first inter-carrier statistical feature is configured in the first clipping module.
- the first inter-carrier statistical feature may be a long-term statistical feature between signal carriers, and the communication device may configure corresponding static clipping parameters on the first clipping module 11 according to the first inter-carrier statistical feature, and will not update after configuration .
- the communication device can search for the corresponding static clipping parameter according to the carrier parameter of the input signal, and use the first clipping module 11 to clip the input signal according to the found static clipping parameter.
- step S7011 when the carrier parameter of the input signal does not satisfy the input condition of the first clipping module, the second clipping module 12 of the communication device is based on the carrier parameter of the input signal and the input The second clipping process is performed on the input signal to obtain the to-be-clipped signal, which may include:
- the second clipping module of the communication device pairs the input signal with the first inter-carrier statistical feature according to the carrier parameter of the input signal and the first inter-carrier statistical feature.
- the input signal is subjected to a second clipping process to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped satisfies the first inter-carrier statistical characteristics.
- Step S702 the communication device adopts the first clipping module to perform the first clipping processing on the signal to be clipped to obtain the first clipping signal, which can include:
- the communication device uses the first clipping module to perform first clipping processing on the signal to be clipped according to clipping parameters corresponding to the first inter-carrier statistical characteristics, to obtain the first clipped signal.
- the communication device adopts the second clipping module 12 to perform a second clipping process on the input signal whose carrier parameters do not meet the statistical characteristics between the first carriers, and cuts out large signals in advance. A fraction of the peak power of the carrier.
- the signal to be clipped input to the first clipping module 11 satisfies the entry condition (the first inter-carrier statistical feature) of the first clipping module 11, and the communication device can use the first clipping module according to the first inter-carrier statistics
- the clipping parameter of the feature configuration performs the first clipping processing on the signal to be clipped, and no missing clipping occurs.
- the second clipping module 12 adaptively starts the clipping process according to the relationship between the statistical characteristics between the input signal and the first carrier, and performs the clipping process on the input signal, It can adapt to the PAPR control of any scene signal, and the implementation is simple.
- the input condition of the first clipping module is a dynamic second carrier statistical feature
- the method further includes: the communication device periodically acquires a new second carrier statistical feature , and configure clipping parameters corresponding to the statistical features of the second carrier in the first clipping module according to the statistical features of the new second carrier.
- the second inter-carrier statistical feature may be a short-term inter-carrier statistical feature obtained by periodic statistics.
- the communication device can configure the corresponding clipping parameters on the first clipping module 11 according to the new second inter-carrier statistical characteristics obtained by statistics in each period, that is, according to the statistical period, periodically perform periodicity on the configured clipping parameters. 's update.
- the time length of each cycle may be determined according to a specific application scenario, which is not limited in this application. Therefore, as time changes, the first clipping module 11 can also perform adaptive clipping processing on the input signal.
- step S7011 when the carrier parameter of the input signal does not satisfy the input condition of the first clipping module, the second clipping module 12 of the communication device is based on the carrier parameter of the input signal and the input The second clipping process is performed on the input signal to obtain the to-be-clipped signal, which may include:
- the second clipping module 12 of the communication device is based on the carrier parameter of the input signal and the second inter-carrier statistical characteristics.
- a second clipping process is performed on the input signal to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped satisfies the second inter-carrier statistical feature.
- Step S702 the communication device uses the first clipping module to perform first clipping processing on the signal to be clipped to obtain a first clipped signal, which may include:
- the communication device uses the first clipping module to perform a first clipping process on the signal to be clipped according to clipping parameters corresponding to the second inter-carrier statistical feature to obtain the first clipped signal.
- the processing process of the input signal by the second clipping module 12 is the same as the processing process of the previous embodiment, except that the carrier of the input signal is determined as time changes.
- the second inter-carrier statistical characteristic also changes with time.
- the referenced second inter-carrier statistical feature also changes periodically with time.
- the second clipping module 12 adaptively enables clipping processing according to the relationship between the statistical characteristics between the input signal and the second carrier, and performs clipping processing on the input signal.
- the first clipping module 11 periodically counts the inter-carrier characteristics of the input signal, and updates the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters according to the statistical inter-carrier characteristics, which can also implement adaptive clipping processing.
- the carrier parameter of the input signal, the first inter-carrier statistic feature, and the second carrier statistic feature are inter-carrier power ratios.
- the carrier parameter of the input signal, the first inter-carrier statistical feature, and the second carrier statistical feature may also be other carrier features such as the modulation mode of the carrier, the spectrum occupancy of the carrier, etc., which are not limited in this application.
- the present application also provides a PAPR suppression method, which is applied to a communication device.
- the communication device may be the RRU or AAU described above, or may also be the communication device shown in FIG. 3 or FIG. 7 , which is not limited in this application.
- FIG. 10 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- the PAPR suppression method of the present application may include:
- Step S100 the communication device performs a second clipping process on an input signal whose carrier parameter does not meet the input condition to obtain a signal to be clipped, and performs a first clipping process on the signal to be clipped to obtain a first clipped signal.
- the input condition includes peak distribution characteristics of the input signal, and the carrier parameter of the signal to be clipped satisfies the input condition.
- the peak distribution characteristics of the input signal may include statistical characteristics of the peak distribution of the input signal, and the peak distribution characteristics of the input signal are mainly affected by factors such as the power ratio between carriers of the input signal, the modulation method of the carrier, and the spectrum occupancy.
- the communication device configures clipping parameters according to the statistical characteristics (input conditions) of the peak value distribution of the input signal, and when the carrier parameter of the input signal does not meet the input conditions, performs a second clipping process on the input signal, and obtains a waiting list that meets the input conditions.
- the signal is clipped, and then the first clipping process is performed according to the clipping parameter corresponding to the input condition to obtain the first clipped signal.
- the PAPR suppression method of the present application performs preprocessing (second clipping processing) on the input signal that does not satisfy the peak distribution characteristics, to obtain the to-be-clipped signal that satisfies the peak distribution characteristics, and then performs the first clipping processing on the to-be-clipped signal, The first clipped signal is obtained.
- the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protection Power amplifier; compared with the method that needs to extract each peak and perform clipping processing in severe scenes, the method of pre-configuring clipping parameters according to statistical characteristics and preprocessing the input signal in the present application is simpler to implement and solves the problem. It solves the technical problems that the static clipping algorithm in the related art is too complicated or the application scene is limited.
- FIG. 11 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- the method may include:
- Step S110 the communication device performs a second clipping process on an input signal whose carrier parameter does not meet the input conditions to obtain a signal to be clipped, and performs a first clipping process on the signal to be clipped to obtain a first clipped signal;
- Step S111 the communication device performs a first clipping process on the input signal whose carrier parameter meets the input condition to obtain a first clipped signal.
- step S110 For the process of step S110, reference may be made to the part about the introduction of step S100 above, which will not be repeated.
- step S111 when the communication device determines that the carrier parameter of the input signal satisfies the input condition, it can directly perform the first clipping process on the input signal to obtain the first clipped signal.
- the PAPR suppression method of the above-mentioned embodiments of the present application according to the relationship between the carrier parameters of the input signal and the input conditions, different clipping processes are adopted for the input signal, compared with the simple clipping parameter in the related art (typical scenario). configuration, the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no leakage clipping, controllable PAPR, and protect the power amplifier; The feature pre-configures the clipping parameters and preprocesses the input signal, which is simpler to implement, and solves the technical problems of excessively complex static clipping algorithms or limited application scenarios in the related art.
- step S100 the communication device performs a second clipping process on the input signal whose carrier parameter does not meet the input condition to obtain the signal to be clipped, which may include:
- the communication device When the carrier parameter of the input signal does not meet the input condition, the communication device performs a second clipping process on the input signal according to the carrier parameter of the input signal and the input condition, to obtain the to-be-clipped wave signal.
- the communication device may perform the second clipping process according to the difference between the carrier parameter of the input signal and the input condition.
- the input condition as the inter-carrier power ratio as an example, combined with the example shown in Figure 5, it is assumed that the clipping parameter is configured according to the inter-carrier power ratio of 1:1, and when the inter-carrier power ratio of the input signal satisfies 1:1 , the first clipping process can be performed on the input signal according to the configured clipping parameters.
- the communication device can perform a second clipping process on the input signal, and cut off part of the peak value of the high-power carrier in advance, so that the second clipping process enters the pending clipping process. Even if the signal is subjected to the first clipping processing using the clipping noise weighting coefficient configured when the inter-carrier power ratio is 1:1, no missing clipping will occur.
- PAPR suppression method of the above-mentioned embodiments of the present application by adaptively enabling the second clipping process according to the relationship between the input signal and the input condition, and performing the second clipping process on the input signal, it is possible to adapt to any scene signal.
- PAPR control, and the implementation is simple.
- FIG. 12 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- Step S100 may include:
- Step S121 when the carrier parameter of the input signal does not satisfy the first inter-carrier statistical feature, the communication device performs an analysis on the input signal according to the carrier parameter of the input signal and the first inter-carrier statistical feature.
- the signal to be clipped is obtained, and the carrier parameter of the signal to be clipped satisfies the first inter-carrier statistical feature.
- step S111 the communication device performs a first clipping process on the signal to be clipped to obtain a first clipped signal, which may include:
- Step S122 the communication device performs a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the first inter-carrier statistical feature to obtain the first clipped signal.
- the method may further include:
- Step S120 the communication device configures clipping parameters corresponding to the first inter-carrier statistical feature according to the first inter-carrier statistical feature.
- the first inter-carrier statistical feature may be a long-term statistical feature between signal carriers, and the communication device may configure corresponding static clipping parameters according to the first inter-carrier statistical feature, and no longer perform the first inter-carrier statistical feature after the configuration. and the corresponding static clipping parameters are updated.
- the communication device can search for the corresponding static clipping parameter according to the carrier parameter of the input signal, and perform the first clipping process on the input signal according to the found static clipping parameter.
- the communication device may further perform a first inter-carrier statistical feature on the input signal according to the carrier parameter of the input signal and the first inter-carrier statistical feature.
- the second clipping process is performed to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped satisfies the first inter-carrier statistical feature.
- a first clipping process is performed on the signal to be clipped according to the clipping parameter corresponding to the first inter-carrier statistical feature to obtain the first clipped signal.
- the process of adaptively enabling clipping processing and performing clipping processing on the input signal according to the relationship between the statistical characteristics between the input signal and the first carrier can adapt to any scene signal.
- PAPR control, and the implementation is simple.
- FIG. 13 shows a flowchart of a PAPR suppression method according to an embodiment of the present application.
- the input condition is a dynamic second carrier statistic.
- the method may include:
- Step S130 the communication device periodically acquires a new statistical feature of the second carrier, and configures clipping parameters corresponding to the statistical feature of the new second carrier according to the new statistical feature of the second carrier.
- Step S100 (S110) may include:
- Step S131 when the carrier parameter of the input signal does not satisfy the second inter-carrier statistical feature, the communication device performs a second analysis on the input signal according to the carrier parameter of the input signal and the second inter-carrier statistical feature. Clipping processing to obtain the signal to be clipped, and the carrier parameter of the signal to be clipped meets the statistical characteristics between the second carriers;
- Step S111 the communication device performs a first clipping process on the signal to be clipped to obtain a first clipped signal, which may include:
- Step S132 the communication device performs a first clipping process on the signal to be clipped according to the clipping parameter corresponding to the second inter-carrier statistical feature to obtain the first clipped signal.
- the second inter-carrier statistical characteristics may be short-term inter-carrier statistical characteristics obtained by periodic statistics.
- the communication device may configure the corresponding clipping parameter according to the new second inter-carrier statistical feature obtained by statistics in each period, that is, periodically update the configured clipping parameter according to the statistical period.
- the time length of each cycle may be determined according to a specific application scenario, which is not limited in this application. Therefore, the first clipping process may also be a process of performing adaptive clipping processing on the input signal as time changes.
- step S131 The specific process of the second clipping processing in step S131 is the same as the processing process described above, except that with the change of time, when judging whether the carrier parameter of the input signal satisfies the second inter-carrier statistical characteristics, the second inter-carrier statistical characteristics It also changes over time.
- the referenced second inter-carrier statistical feature also changes periodically with time.
- the PAPR suppression method of the above-mentioned embodiments of the present application through the process of adaptively enabling the second clipping process and performing the second clipping process on the input signal according to the relationship between the statistical characteristics between the input signal and the second carrier, the periodic The inter-carrier characteristics of the input signal are counted, and the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters are updated according to the statistical inter-carrier characteristics, and an adaptive first clipping process can also be implemented.
- the PAPR control of any scene signal can be adapted, and the implementation is simple.
- the method includes:
- the communication device performs a third clipping process on the input signal according to the clipping parameter corresponding to the carrier parameter of the input signal; wherein the clipping parameter is a statistical feature according to the peak distribution of the input signal, which is a different carrier wave.
- the carrier parameter is a power ratio between carriers
- the clipping parameter is a weighting coefficient of clipping noise.
- the corresponding clipping parameters can be configured according to the statistical characteristics of the peak distribution of the input signal.
- the statistical characteristics of the peak distribution can be carrier characteristics, such as inter-carrier power spectrum occupancy.
- different clipping parameters can be configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- the communication device can configure the clipping parameters according to the carrier parameters of the input signal and the characteristics of the carrier. parameter, adaptively adjusts the weighting coefficient of the clipping noise, and performs clipping processing on the input signal according to the weighting coefficient of the clipping noise.
- the PAPR suppression method of the above-mentioned embodiments of the present application by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal, the adaptive weighted allocation of clipping noise by the communication device is realized, compared with Regarding the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protecting the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- Embodiments of the present application also provide an adaptive peak-to-average ratio PAPR suppression apparatus, which is applied to communication equipment.
- FIG. 14 shows a block diagram of an apparatus for suppressing PAPR according to an embodiment of the present application. As shown in FIG. 14 , the apparatus may include:
- the clipping unit 1400 is configured to perform a second clipping process on an input signal whose carrier parameter does not meet the input conditions to obtain a signal to be clipped, and perform a first clipping process on the signal to be clipped to obtain a first clipped signal;
- the input condition includes peak distribution characteristics of the input signal, and the carrier parameter of the signal to be clipped satisfies the input condition.
- the PAPR suppression device of the present application performs preprocessing (second clipping processing) on the input signal that does not satisfy the peak distribution characteristics, to obtain the to-be-clipped signal that satisfies the peak distribution characteristics, and then performs the first clipping processing on the to-be-clipped signal, The first clipped signal is obtained.
- the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protection Power amplifier; compared with the method that needs to extract each peak and perform clipping processing in severe scenes, the method of pre-configuring clipping parameters according to statistical characteristics and preprocessing the input signal in the present application is simpler to implement and solves the problem. It solves the technical problems that the static clipping algorithm in the related art is too complicated or the application scene is limited.
- the clipping unit 1400 includes: a second clipping module, configured to, when the carrier parameter of the input signal does not meet the input condition, perform the following steps according to the carrier parameter of the input signal and The input condition performs a second clipping process on the input signal to obtain the signal to be clipped.
- the apparatus further includes: a first clipping module, configured to perform a first clipping process on an input signal whose carrier parameter meets the input condition to obtain a first clipped signal.
- the PAPR suppression device of the above-mentioned embodiments of the present application according to the relationship between the carrier parameters of the input signal and the input conditions, different clipping processes are adopted for the input signal, compared with the simple clipping parameter in the related art (typical scenario). configuration, the above-mentioned embodiments of the present application can adapt to multiple scenarios, ensure no leakage clipping, controllable PAPR, and protect the power amplifier; The feature pre-configures the clipping parameters and preprocesses the input signal, which is simpler to implement, and solves the technical problems of excessively complex static clipping algorithms or limited application scenarios in the related art.
- the apparatus further includes: a third clipping module, configured to perform a third clipping process on the input signal according to a clipping parameter corresponding to a carrier parameter of the input signal; wherein , and the clipping parameter is configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- a third clipping module configured to perform a third clipping process on the input signal according to a clipping parameter corresponding to a carrier parameter of the input signal; wherein , and the clipping parameter is configured for different carriers according to the statistical characteristics of the peak distribution of the input signal.
- the carrier parameter is a power ratio between carriers
- the clipping parameter is a weighting coefficient of clipping noise
- the PAPR suppression apparatus of the above-mentioned embodiments of the present application by configuring different clipping parameters for different carriers according to the statistical characteristics of the peak distribution of the input signal, the adaptive weighted distribution of the clipping noise by the communication device is realized, compared with Regarding the configuration of simple clipping parameters in the related art (typical scenario), the above-mentioned embodiments of the present application can be adapted to multiple scenarios, ensuring no missing clipping, controllable PAPR, and protecting the power amplifier. Compared with the method that needs to extract each peak and perform clipping processing in severe scenarios, the method of preconfiguring clipping parameters according to statistical features of the present application is simpler to implement.
- the input condition is a static first inter-carrier statistical feature
- the second clipping module is further configured to perform the first inter-carrier statistics when the carrier parameter of the input signal does not satisfy the first inter-carrier statistics feature, perform a second clipping process on the input signal according to the carrier parameter of the input signal and the statistical characteristics between the first carriers to obtain the signal to be clipped; the first clipping module is also used for A first clipping process is performed on the signal to be clipped according to the clipping parameter corresponding to the first inter-carrier statistical feature to obtain the first clipped signal.
- the apparatus further includes: a first configuration module, configured to configure clipping parameters corresponding to the first inter-carrier statistical characteristics according to the first inter-carrier statistical characteristics.
- PAPR suppression apparatus by adaptively enabling clipping processing and clipping the input signal according to the relationship between the statistical characteristics between the input signal and the first carrier, it is possible to adapt to any scene signal.
- PAPR control, and the implementation is simple.
- the input condition is a dynamic second carrier statistical feature
- the apparatus further includes: a second configuration module, configured to periodically acquire a new second carrier statistical feature, and based on the new statistical feature of the second carrier Configure the clipping parameter corresponding to the new statistical feature of the second carrier of the second carrier.
- the second clipping module is further configured to, when the carrier parameter of the input signal does not satisfy the second inter-carrier statistical characteristics, according to the carrier parameter of the input signal and the second The inter-carrier statistical feature performs a second clipping process on the input signal to obtain the to-be-clipped signal; the first clipping module is further configured to A first clipping process is performed on the signal to be clipped to obtain the first clipped signal.
- the PAPR suppression device of the above-mentioned embodiments of the present application through the process of adaptively enabling the second clipping process and performing the second clipping process on the input signal according to the relationship between the statistical characteristics between the input signal and the second carrier, the periodic The inter-carrier characteristics of the input signal are counted, and the locally configured second inter-carrier statistical characteristics and corresponding clipping parameters are updated according to the statistical inter-carrier characteristics, and an adaptive first clipping process can also be implemented.
- the PAPR control of any scene signal can be adapted, and the implementation is simple.
- the carrier parameter, the first inter-carrier statistic feature and the second carrier statistic feature of the input signal are the inter-carrier power ratio.
- An embodiment of the present application provides a PAPR suppression apparatus, including: a processor and a memory for storing instructions executable by the processor; wherein the processor is configured to implement the above method when executing the instructions.
- Embodiments of the present application provide a non-volatile computer-readable storage medium on which computer program instructions are stored, and when the computer program instructions are executed by a processor, implement the above method.
- Embodiments of the present application provide a computer program product, including computer-readable codes, or a non-volatile computer-readable storage medium carrying computer-readable codes, when the computer-readable codes are stored in a processor of an electronic device When running in the electronic device, the processor in the electronic device executes the above method.
- a computer-readable storage medium may be a tangible device that can hold and store instructions for use by the instruction execution device.
- the computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing.
- Computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read-only memory (Electrically Programmable Read-Only-Memory, EPROM or flash memory), static random access memory (Static Random-Access Memory, SRAM), portable compact disk read-only memory (Compact Disc Read-Only Memory, CD - ROM), Digital Video Disc (DVD), memory sticks, floppy disks, mechanically encoded devices, such as punch cards or raised structures in grooves on which instructions are stored, and any suitable combination of the foregoing .
- RAM random access memory
- ROM read only memory
- EPROM erasable programmable read-only memory
- EPROM Errically Programmable Read-Only-Memory
- SRAM static random access memory
- portable compact disk read-only memory Compact Disc Read-Only Memory
- CD - ROM Compact Disc Read-Only Memory
- DVD Digital Video Disc
- memory sticks floppy disks
- Computer readable program instructions or code described herein may be downloaded to various computing/processing devices from a computer readable storage medium, or to an external computer or external storage device over a network such as the Internet, a local area network, a wide area network and/or a wireless network.
- the network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and/or edge servers.
- a network adapter card or network interface in each computing/processing device receives computer-readable program instructions from a network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in each computing/processing device .
- the computer program instructions used to perform the operations of the present application may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or in one or more source or object code written in any combination of programming languages, including object-oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as the "C" language or similar programming languages.
- the computer readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server implement.
- the remote computer may be connected to the user's computer through any kind of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or, may be connected to an external computer (eg, use an internet service provider to connect via the internet).
- electronic circuits such as programmable logic circuits, Field-Programmable Gate Arrays (FPGA), or Programmable Logic Arrays (Programmable Logic Arrays), are personalized by utilizing state information of computer-readable program instructions.
- Logic Array, PLA the electronic circuit can execute computer readable program instructions to implement various aspects of the present application.
- These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer or other programmable data processing apparatus to produce a machine that causes the instructions when executed by the processor of the computer or other programmable data processing apparatus , resulting in means for implementing the functions/acts specified in one or more blocks of the flowchart and/or block diagrams.
- These computer readable program instructions can also be stored in a computer readable storage medium, these instructions cause a computer, programmable data processing apparatus and/or other equipment to operate in a specific manner, so that the computer readable medium on which the instructions are stored includes An article of manufacture comprising instructions for implementing various aspects of the functions/acts specified in one or more blocks of the flowchart and/or block diagrams.
- Computer readable program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other equipment to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other equipment to produce a computer-implemented process , thereby causing instructions executing on a computer, other programmable data processing apparatus, or other device to implement the functions/acts specified in one or more blocks of the flowcharts and/or block diagrams.
- each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more functions for implementing the specified logical function(s) executable instructions.
- the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
- each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented in hardware (eg, circuits or ASICs (Application) that perform the corresponding functions or actions. Specific Integrated Circuit, application-specific integrated circuit)), or can be implemented by a combination of hardware and software, such as firmware.
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Abstract
Description
Claims (22)
- 一种自适应峰均比PAPR抑制装置,其特征在于,所述装置包括:第一削波模块和第二削波模块,所述第二削波模块向所述第一削波模块输出满足所述第一削波模块的输入条件的待削波信号,所述输入条件包括输入信号的峰值分布特征;所述第一削波模块对所述待削波信号进行第一削波处理得到第一削波信号。
- 根据权利要求1所述的装置,其特征在于,所述第二削波模块用于获取输入信号,在所述输入信号的载波参数不满足所述第一削波模块的输入条件时,根据所述输入信号的载波参数和所述输入条件对所述输入信号进行第二削波处理,得到所述待削波信号。
- 根据权利要求1或2所述的装置,其特征在于,所述第二削波模块用于获取所述输入信号,在所述输入信号的载波参数满足所述第一削波模块的输入条件时,将所述输入信号作为待削波信号输出至所述第一削波模块。
- 根据权利要求1所述的装置,其特征在于,在旁路模式下,所述第二削波模块还用于获取所述输入信号,将所述输入信号输出至所述第一削波模块;所述第一削波模块用于根据所述输入信号的载波参数对应的削波参数,对所述输入信号进行第三削波处理;其中,削波参数为根据输入信号的峰值分布的统计特征,为不同的载波配置的。
- 根据权利要求4所述的装置,其特征在于,所述载波参数为载波间功率配比,所述削波参数为削波噪声的加权系数。
- 根据权利要求2所述的装置,其特征在于,所述第一削波模块的输入条件为静态的第一载波间统计特征,所述第二削波模块用于在所述输入信号的载波参数不满足第一载波间统计特征时,根据所述输入信号的载波参数和所述第一载波间统计特征对所述输入信号进行第二削波处理,得到所述待削波信号;所述第一削波模块用于根据与第一载波间统计特征对应的削波参数对所述待削波信号进行第一削波处理,得到所述第一削波信号。
- 根据权利要求2所述的装置,其特征在于,所述第一削波模块的输入条件为动态的第 二载波间统计特征,其中,所述第一削波模块用于对所述第二载波统计特征以及第二载波统计特征对应的削波参数进行周期性更新,所述第二削波模块用于在所述输入信号的载波参数不满足第二载波间统计特征时,根据所述输入信号的载波参数和所述第二载波间统计特征对所述输入信号进行第二削波处理,得到所述待削波信号;所述第一削波模块用于根据与第二载波间统计特征对应的削波参数对所述待削波信号进行第一削波处理,得到所述第一削波信号。
- 根据权利要求6或7所述的装置,其特征在于,所述输入信号的载波参数、第一载波间统计特征以及第二载波统计特征包括载波间功率配比。
- 一种通信设备,其特征在于,包括如权利要求1-8任意一项所述的自适应峰均比PAPR抑制装置。
- 一种通信系统,所述通信系统包括基带单元BBU,所述通信系统还包括射频拉远单元RRU或有源天线处理单元AAU,其特征在于:如权利要求1-8任意一项所述的第一削波模块位于RRU或者AAU内,如权利要求1-8任意一项所述的第二削波模块位于BBU内;或者,如权利要求1-8任意一项所述第一削波模块和所述第二削波模块都位于RRU内或者AAU内。
- 一种自适应峰均比PAPR抑制方法,其特征在于,所述方法应用于通信设备,所述方法包括:所述通信设备对载波参数不满足输入条件的输入信号进行第二削波处理得到待削波信号,对待削波信号进行第一削波处理,得到第一削波信号;其中,所述输入条件包括输入信号的峰值分布特征,所述待削波信号的载波参数满足所述输入条件。
- 根据权利要求11所述的方法,其特征在于,所述通信设备对载波参数不满足输入条件的输入信号进行第二削波处理得到待削波信号,包括:所述通信设备在所述输入信号的载波参数不满足所述输入条件时,根据所述输入信号的载波参数和所述输入条件对所述输入信号进行第二削波处理,得到所述待削波信号。
- 根据权利要求11或12所述的方法,其特征在于,所述方法还包括:所述通信设备对载波参数满足输入条件的输入信号进行第一削波处理,得到第一削波信 号。
- 根据权利要求11所述的方法,其特征在于,所述方法还包括:所述通信设备根据所述输入信号的载波参数对应的削波参数,对所述输入信号进行第三削波处理;其中,削波参数为根据输入信号的峰值分布的统计特征,为不同的载波配置的。
- 根据权利要求14所述的方法,其特征在于,所述载波参数为载波间功率配比,削波参数为削波噪声的加权系数。
- 根据权利要求12所述的方法,其特征在于,所述输入条件为静态的第一载波间统计特征,所述通信设备在所述输入信号的载波参数不满足所述输入条件时,根据所述输入信号的载波参数和所述输入条件对所述输入信号进行第二削波处理,得到所述待削波信号,包括:所述通信设备在所述输入信号的载波参数不满足所述第一载波间统计特征时,根据所述输入信号的载波参数和所述第一载波间统计特征对所述输入信号进行第二削波处理,得到所述待削波信号;所述通信设备对所述待削波信号进行第一削波处理,得到第一削波信号,包括:所述通信设备根据与第一载波间统计特征对应的削波参数对所述待削波信号进行第一削波处理,得到所述第一削波信号。
- 根据权利要求16所述的方法,其特征在于,所述方法还包括:所述通信设备根据所述第一载波间统计特征配置所述第一载波间统计特征对应的削波参数。
- 根据权利要求12所述的方法,其特征在于,所述输入条件为动态的第二载波统计特征,所述方法还包括:所述通信设备周期性的获取新的第二载波统计特征,并根据新的第二载波统计特征配置新的第二载波统计特征对应的削波参数。
- 根据权利要求18所述的方法,其特征在于,所述通信设备在所述输入信号的载波参数不满足所述输入条件时,根据所述输入信号的载波参数和所述输入条件对所述输入信号进行第二削波处理,得到所述待削波信号,包括:所述通信设备在所述输入信号的载波参数不满足第二载波间统计特征时,根据所述输入信号的载波参数和所述第二载波间统计特征对所述输入信号进行第二削波处理,得到所述待 削波信号;所述通信设备对所述待削波信号进行第一削波处理,得到第一削波信号,包括:所述通信设备根据与第二载波间统计特征对应的削波参数对所述待削波信号进行第一削波处理,得到所述第一削波信号。
- 根据权利要求16-19任意一项所述的方法,其特征在于,所述输入信号的载波参数、第一载波间统计特征以及第二载波统计特征为载波间功率配比。
- 一种自适应峰均比PAPR抑制装置,其特征在于,包括:处理器;用于存储处理器可执行指令的存储器;其中,所述处理器被配置为执行所述指令时实现权利要求11-20任意一项所述的方法。
- 一种非易失性计算机可读存储介质,其上存储有计算机程序指令,其特征在于,所述计算机程序指令被处理器执行时实现权利要求11-20中任意一项所述的方法。
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| CN202080107024.0A CN116530061B (zh) | 2020-11-30 | 2020-11-30 | 自适应峰均比papr抑制装置、方法以及通信设备 |
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| US12261728B2 (en) * | 2022-10-18 | 2025-03-25 | Qualcomm Incorporated | DMRS with dynamic and controllable PAPR properties |
| CN121125426B (zh) * | 2025-11-13 | 2026-03-17 | 北京广世无限科技有限责任公司 | 基于频域子载波贡献度量的选择性降papr方法及系统 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040081324A1 (en) * | 2002-10-24 | 2004-04-29 | Lau Kai Kwong | Multi-channel audio signal limiter with shared clip detection |
| CN1553670A (zh) * | 2003-05-30 | 2004-12-08 | 华为技术有限公司 | 一种信号削波装置及方法 |
| US20070140101A1 (en) * | 2005-12-15 | 2007-06-21 | Nortel Networks Limited | System and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing signals using reserved spectrum |
| CN111107031A (zh) * | 2018-10-25 | 2020-05-05 | 北京新岸线移动多媒体技术有限公司 | 一种用于降低信号峰均比的方法及装置 |
| CN111464476A (zh) * | 2020-03-10 | 2020-07-28 | 北京新岸线移动多媒体技术有限公司 | 一种削波方法及装置 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007194825A (ja) * | 2006-01-18 | 2007-08-02 | Fujitsu Ltd | マルチキャリア信号送信装置 |
| US8073073B2 (en) * | 2006-10-30 | 2011-12-06 | Quantenna Communications, Inc. | Optimized clipping for peak-to-average power ratio reduction |
| CN101257481B (zh) * | 2008-04-22 | 2012-09-05 | 中兴通讯股份有限公司 | 一种预处理不连续配置多载波的削峰系统和方法 |
| JP5291668B2 (ja) * | 2010-01-13 | 2013-09-18 | 株式会社エヌ・ティ・ティ・ドコモ | 送信機及びmimo多重伝送方法 |
| US8583061B2 (en) * | 2011-11-04 | 2013-11-12 | Motorola Solutions, Inc. | Peak suppression on multicarrier |
| KR101512543B1 (ko) * | 2012-04-27 | 2015-04-15 | 삼성전기주식회사 | 피크 억제 기능을 갖는 베이스 밴드 처리기, 송신 장치 및 송신 방법 |
| JP6070820B2 (ja) * | 2013-03-15 | 2017-02-01 | 日本電気株式会社 | 通信装置及びそのピーク抑圧方法 |
| KR102094726B1 (ko) * | 2013-05-24 | 2020-03-30 | 삼성전자주식회사 | Ofdm 신호의 papr 저감 방법 및 장치, 송신 장치 |
| US9236899B2 (en) * | 2013-06-05 | 2016-01-12 | Telefonaktiebolaget L M Ericsson (Publ) | Crest factor reduction of inter-band carrier aggregated signals |
| US9178540B2 (en) * | 2014-02-02 | 2015-11-03 | Redline Innovations Group Inc. | Systems and methods for increasing the effectiveness of digital pre-distortion in electronic communications |
| US9537686B2 (en) * | 2014-04-03 | 2017-01-03 | Redline Communications Inc. | Systems and methods for increasing the effectiveness of digital pre-distortion in electronic communications |
| US9444669B2 (en) * | 2014-12-30 | 2016-09-13 | Texas Instruments Incorporated | Peak to average power ratio reduction of OFDM signals |
| US9819526B2 (en) * | 2015-11-05 | 2017-11-14 | Huawei Technologies Co., Ltd. | Apparatus and methods for low PAPR transmission in MIMO systems |
| CN108293032B (zh) * | 2015-12-17 | 2020-07-07 | 华为技术有限公司 | 一种削波方法及装置 |
| CN111107030B (zh) * | 2018-10-25 | 2022-07-12 | 北京新岸线移动多媒体技术有限公司 | 一种适用于大带宽系统的降低信号峰均比的方法及装置 |
| WO2020158040A1 (ja) * | 2019-01-31 | 2020-08-06 | 三菱電機株式会社 | 衛星送信機および中継衛星通信システム |
-
2020
- 2020-11-30 EP EP20963065.6A patent/EP4236221A4/en active Pending
- 2020-11-30 WO PCT/CN2020/132856 patent/WO2022110177A1/zh not_active Ceased
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-
2023
- 2023-05-30 US US18/325,955 patent/US20230308333A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040081324A1 (en) * | 2002-10-24 | 2004-04-29 | Lau Kai Kwong | Multi-channel audio signal limiter with shared clip detection |
| CN1553670A (zh) * | 2003-05-30 | 2004-12-08 | 华为技术有限公司 | 一种信号削波装置及方法 |
| US20070140101A1 (en) * | 2005-12-15 | 2007-06-21 | Nortel Networks Limited | System and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing signals using reserved spectrum |
| CN111107031A (zh) * | 2018-10-25 | 2020-05-05 | 北京新岸线移动多媒体技术有限公司 | 一种用于降低信号峰均比的方法及装置 |
| CN111464476A (zh) * | 2020-03-10 | 2020-07-28 | 北京新岸线移动多媒体技术有限公司 | 一种削波方法及装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4236221A4 * |
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