WO2012142976A1 - Procédé, appareil et système de détection de la qualité d'un canal - Google Patents

Procédé, appareil et système de détection de la qualité d'un canal Download PDF

Info

Publication number
WO2012142976A1
WO2012142976A1 PCT/CN2012/074540 CN2012074540W WO2012142976A1 WO 2012142976 A1 WO2012142976 A1 WO 2012142976A1 CN 2012074540 W CN2012074540 W CN 2012074540W WO 2012142976 A1 WO2012142976 A1 WO 2012142976A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
channel
transmitting
receiving
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/074540
Other languages
English (en)
Chinese (zh)
Inventor
张武荣
刘烨
周蓉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2012142976A1 publication Critical patent/WO2012142976A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method, apparatus, and system for detecting channel quality.
  • BACKGROUND In a communication system, in order to ensure system performance, an antenna, a feeder, and a radio frequency channel composed of an analog device are required to reliably modulate a baseband signal into a frequency band signal, or accurately demodulate the received frequency band signal. It is a baseband signal, but due to processing, device aging and nonlinear characteristics, temperature changes, etc., signal distortion and noise increase, that is, channel quality may not be guaranteed, which will seriously affect system performance. Channel quality detection can now be performed using standing wave detection.
  • the standing wave can be used to describe whether the line is effective for the input signal when the electromagnetic wave is transmitted. If the line does not match the input signal impedance, the signal will be reflected back, and the input signal and the reflected signal will be superimposed to form a standing wave.
  • the standing wave is usually described by the Voltage Standing Wave Ratio (VSWR), which is the ratio of the peak voltage to the valley voltage on the transmission line.
  • VSWR can be calculated based on the forward signal power and the reverse signal power, and then the calculated VSRW is compared with a preset threshold to obtain a detection result.
  • VSWR can only detect if the impedance at the channel test point matches, for other factors, such as! Channel quality degradation due to /Q branch imbalance, LO phase noise, filter loss, intermodulation interference, ADC/DAC noise, etc. cannot be detected. In other words, even if the VSWR test passes, it is not possible to determine that the channel is qualified. Summary of the invention
  • Embodiments of the present invention provide a method, device, and system for detecting channel quality, which are accurate and reliable for channel detection.
  • Embodiments of the present invention provide a method for detecting channel quality, including:
  • the received signal is a signal after the transmitted signal is transmitted in a channel to be detected;
  • An embodiment of the present invention provides an apparatus for detecting channel quality, including:
  • a first acquiring module configured to acquire a transmit signal
  • a second acquiring module configured to acquire a received signal, where the received signal is a signal that is sent by the first acquiring module to be transmitted in a channel to be detected;
  • a calculation module configured to obtain a signal to noise ratio according to the transmit signal acquired by the first acquiring module and the received signal obtained by the second acquiring module;
  • a detecting module configured to detect a quality of the channel to be detected according to the signal to noise ratio obtained by the computing module.
  • Embodiments of the present invention provide a system for detecting channel quality, including:
  • a transmitting device for generating a transmitting signal
  • a channel to be detected configured to transmit and process the transmission signal generated by the transmitting device
  • a detecting device configured to receive the received signal after the channel transmission processing by the channel to be detected, obtain the received signal, and acquire the transmitted signal generated by the transmitting device, and obtain according to the received signal and the transmitted signal Signal to noise ratio, using the signal to noise ratio to detect the quality of the channel to be detected.
  • the signal to noise ratio is used for channel detection in the embodiment of the present invention, due to various factors of the channel, such as I/Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC/
  • the DAC noise will eventually form the noise of the whole channel.
  • the signal-to-noise ratio can reflect the influence of various factors on the channel quality. Therefore, using the signal-to-noise ratio for channel quality detection can ensure the accuracy of channel quality detection, and the detection method is simple and easy.
  • Row. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief description of the drawings to be used in the description of the embodiments will be briefly made. It is obvious that the drawings in the following description are some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative labor.
  • FIG. 1 is a schematic flow chart of a method according to a first embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a method according to a second embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a system corresponding to a detection process according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a device according to a fourth embodiment of the present invention.
  • Fig. 6 is a schematic structural view of a system according to a fifth embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a schematic flowchart of a method according to a first embodiment of the present invention, including:
  • Step 11 Acquire the transmitted signal
  • the transmitting signal when detecting the channel in the transmitting direction, may be a transmitting signal generated by the local transmitter; when detecting the channel in the receiving direction, the transmitting signal is a transmitting signal generated by the reference transmitting unit.
  • the transmission signal may be a digital signal or an analog signal.
  • Step 12 Acquire a received signal, where the received signal is a signal after the transmitted signal is transmitted in a channel to be detected;
  • the channel to be detected may be a channel in a transmitting direction, for example, including a local transmitting channel, a radiating unit connection port, and a radiating element coupler. If the local transmitter produces a digital signal, the local transmit channel may include means for digital to analog conversion, upconversion, power amplification, filtering, and the like.
  • the channel to be detected may also be a channel in the receiving direction, for example, including a radiating element coupler, a radiating element connection port, and a local receiving channel.
  • the local receive channel includes, for example, means for filtering, power amplification, downconversion, and the like.
  • Step 13 obtaining a signal to noise ratio according to the acquired transmitted signal and the received received signal
  • Step 14 Detect the quality of the channel to be detected according to the signal to noise ratio.
  • the signal-to-noise ratio is used for channel detection, due to various factors of the channel, such as! /Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise, etc. will eventually form the noise of the entire channel.
  • the signal-to-noise ratio can reflect the influence of various factors on the channel quality. Therefore, The signal-to-noise ratio is used for channel quality detection, which can ensure the accuracy of channel quality detection, and the detection method is simple and easy.
  • FIG. 2 is a schematic flowchart of a method according to a second embodiment of the present invention.
  • This embodiment takes an example of detecting a channel in a transmitting direction.
  • the signal-to-noise ratio is calculated by using a digital signal as an example. It can be understood that the simulation can also be used.
  • the signal calculates the signal to noise ratio and detection.
  • FIG. 3 is a schematic structural diagram of a system corresponding to a detection flow according to an embodiment of the present invention.
  • the detection of the channel in the transmitting direction and the channel in the receiving direction can be completed.
  • the transmitting signal enters the detecting device via the local transmitting channel, the radiating unit connection port, the radiating unit coupler, and the reference receiving unit; for the receiving direction, the transmitting signal is connected to the transmitting unit via the reference transmitting unit, the radiating unit coupler, and the radiating unit.
  • the local receiving channel enters the detecting device.
  • the first channel selection module and the second channel selection module can function as a switch.
  • the first channel selection module when detecting the transmission direction, the first channel selection module remains in an off state, that is, the reference transmission unit and the radiation unit coupler are kept disconnected. And the second channel selection module remains in the connected state, that is, the connection between the radiation unit coupler and the reference receiving unit is maintained, so that the signal processed by the radiation unit coupler enters the reference receiving unit; when detecting the receiving direction, the first channel selecting module remains The connection state, that is, the connection of the reference transmitting unit and the radiating unit coupler is maintained, and the second channel selecting module remains in the off state, that is, the disconnection of the radiating unit coupler and the reference receiving unit is maintained, so that the transmitting signal transmitted by the reference transmitting unit enters The radiating element coupler then enters the receiving channel.
  • the same detecting device is used for detecting in the transmitting direction and the receiving direction. It can be understood that one detecting device can be used in the transmitting direction and the other detecting device can be used in the receiving direction.
  • this embodiment includes:
  • Step 21 The local transmitter corresponding to the channel to be detected generates a transmission signal.
  • the transmit signal generated by the local transmitter will be transmitted in transmit channel #1.
  • the baseband processing module of the local transmitter may generate a first digital signal, and the first digital signal may be a digital baseband signal or a digital intermediate frequency signal, and the first digital signal may be in a random sequence or a known sequence.
  • the reference transmitting unit may determine the transmitting channel to be detected, for example, the transmitting channel #1, and then send an instruction to the transmitting channel to be detected. After receiving the instruction, the transmitting channel to be detected triggers the local sending. The signal produces a first digital signal.
  • Step 22 The local transmit channel in the channel to be detected transmits the transmit signal generated by the local transmitter.
  • the local transmission channel is the transmission channel #1
  • the digital-to-analog converter, the up-converter, and the power amplifier in the transmission channel #1 perform corresponding processing on the first digital signal generated by the local transmitter.
  • the digital-to-analog converter performs digital-to-analog conversion of the first digital signal to obtain a first analog signal, and the up-converter up-converts the first analog signal to obtain an RF signal, and the power amplifier performs power amplification on the RF signal, and then , filtered to emit.
  • S (i) is digital-to-analog converted, it becomes the corresponding analog intermediate frequency signal.
  • the analog intermediate frequency signal or the analog baseband signal is the first analog signal S(t ).
  • the first analog signal is upconverted to a radio frequency signal, and then amplified by power, filtered, and fed into the antenna.
  • Step 23 The radiating unit connection port in the channel to be detected transmits the transmitted signal transmitted through the local transmitting channel.
  • the radiating element connection port #1 transmits a transmission signal transmitted through the transmission channel #1.
  • Step 24 The radiating element coupler in the channel to be detected performs coupling processing on the transmitting signal transmitted by the radiating unit connection port.
  • the coupling process may split the transmit signal into two paths, one for transmitting, and the other for coupling the signal transmitted by the radiating unit connection port to the reference receiving unit to obtain the received signal.
  • Step 25 The reference receiving unit receives the signal after the coupling of the radiating unit coupler to obtain a received signal.
  • the sample sequence contains the initial signal and noise through the transmit channel.
  • Step 26 The detecting device obtains a signal to noise ratio according to the transmitted signal and the received signal.
  • the signal to noise ratio is obtained.
  • the detecting device can obtain the second digital signal from the reference receiving unit.
  • the reference receiving unit can also be integrated in the detecting device.
  • the first digital signal it may be pre-configured, ⁇ , at the time of detection, the transmission signal is determined. At this time, the detecting device may acquire the first digital signal according to the configuration information; or, the local transmitter may transmit the first After a digital signal, the information of the first digital signal is sent to the detecting device. It may be that when the detection fails, that is, if the calculated signal-to-noise ratio SNR is lower than the set threshold SNR r h , it is determined that the transmission channel is invalid and an alarm is issued.
  • each transmission channel needs to be detected.
  • the switch to be detected can be selected for detection by a switch, for example, by setting a switch in the second channel selection module, that is, maintaining the connection of the radiating element coupler corresponding to the transmitting channel to be detected and the reference receiving unit.
  • each transmission channel can be detected one by one, or multiple transmission channels can be detected at the same time.
  • the above detection may be performed periodically, or when downlink traffic is small, it may be detected to avoid affecting normal services.
  • This embodiment uses the signal-to-noise ratio for channel detection. Due to various factors of the channel, such as ! /Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise, etc., the entire channel will eventually form.
  • the noise, signal-to-noise ratio can reflect the influence of various factors on the channel quality. Therefore, using channel-to-noise ratio for channel quality detection can ensure the accuracy of channel quality detection, and the detection method is simple and easy.
  • the above detection device can be located in an existing calibration unit, and the detection is completed by using existing resources, without additionally increasing hardware overhead and reducing the impact on the system.
  • FIG. 4 is a schematic flowchart of a method according to a third embodiment of the present invention. This embodiment takes an example of detecting a receiving channel. This embodiment can still refer to the system shown in FIG. Referring to FIG. 4, this embodiment includes:
  • Step 41 The reference transmitting unit generates a transmitting signal.
  • Step 42 The radiating unit coupler in the channel to be detected performs coupling processing on the transmitted signal.
  • the channel to be detected includes receive channel #1, the radiating element coupler #1 is in operation and the transmit signal is coupled to the radiating element connection port #1.
  • Step 43 The radiation unit connection port in the channel to be detected receives the transmission signal after being coupled through the radiation unit coupler.
  • the radiating element connection port #1 receives the transmitted signal from the radiating element coupler #1.
  • Step 44 The local receiving channel in the channel to be detected transmits the transmitting signal to obtain a received signal.
  • the receiving channel #1 filters, powers, and down-converts the received signal of the radiating unit connection port #1, and obtains the processed analog signal. After the analog signal is subjected to analog-to-digital conversion, a second digital signal 1 ⁇ ( k ) is obtained.
  • Step 45 The detecting device obtains a signal to noise ratio according to the transmitted signal and the received signal.
  • the signal to noise ratio is obtained.
  • the calculation formula can be:
  • the detecting device may obtain the second digital signal from the local receiving channel, or may be a separate device, such as the reference receiving unit obtaining the second digital signal from the local receiving channel, and sending the second digital signal to Detection device.
  • the first digital signal it may be pre-configured, that is, the detection signal is determined when detecting, at this time, the detecting device may know the first digital signal according to the configuration information; or, the reference transmitting unit is transmitting the first After the digital signal, the information of the first digital signal is sent to the detecting device.
  • Step 46 If the SNR is greater than or equal to a preset threshold, the channel to be detected passes the detection, that is, the quality of the channel to be detected satisfies the requirement; otherwise, the detection fails. It may be that when the detection fails, that is, if the calculated signal-to-noise ratio SN ⁇ is lower than the set threshold SNR «s , it is determined that the transmission channel is invalid, and an alarm is issued.
  • each receiving channel can be detected for detection by a switch, for example, by setting a switch in the first channel selecting module, that is, maintaining the connection of the radiating element coupler corresponding to the receiving channel to be detected and the reference transmitting unit.
  • each receiving channel can be detected one by one, or multiple receiving channels can be detected at the same time.
  • the above detection may be performed periodically, or when downlink traffic is small, it may be detected to avoid affecting normal services.
  • This embodiment uses the signal-to-noise ratio for channel detection, due to various factors of the channel, such as! /Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise, etc. will eventually form the noise of the entire channel.
  • the signal-to-noise ratio can reflect the influence of various factors on the channel quality. Therefore, The signal-to-noise ratio is used for channel quality detection, which can ensure the accuracy of channel quality detection, and the detection method is simple and easy.
  • the above detection device can be located in an existing calibration unit, and the detection is completed by using existing resources, without additionally increasing hardware overhead and reducing the impact on the system.
  • FIG. 5 is a schematic structural diagram of a device according to a fourth embodiment of the present invention, including a first acquiring module 51, a second obtaining module 52, a calculating module 53, and a detecting module 54.
  • the first acquiring module 51 is configured to acquire a transmitting signal;
  • Mode The block 52 is configured to acquire a received signal, where the received signal is a signal that is transmitted by the first acquiring module in the channel to be detected, and the calculating module 53 is configured to obtain according to the first acquiring module.
  • the transmitting signal and the received signal obtained by the second obtaining module obtain a signal to noise ratio;
  • the detecting module 54 is configured to detect the quality of the channel to be detected according to the signal to noise ratio obtained by the calculating module.
  • the calculation module 53 specifically adopts the following formula to obtain a signal to noise ratio:
  • the SNR is the signal to noise ratio
  • S (i) is the transmitted signal
  • R is the received signal
  • the detecting module 54 is specifically configured to: if the signal to noise ratio is less than a preset threshold, the channel to be detected fails to pass the detection; if the signal to noise ratio is greater than or equal to a preset threshold,
  • the channel to be detected is channel-detected by using a signal-to-noise ratio in the present embodiment, due to various factors of the channel, such as !/Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, and ADC.
  • the /DAC noise will eventually form the noise of the entire channel.
  • the signal-to-noise ratio can reflect the influence of various factors on the channel quality. Therefore, using the signal-to-noise ratio for channel quality detection can ensure the accuracy of channel quality detection and the detection method is simple. Easy.
  • FIG. 6 is a schematic structural diagram of a system according to a fifth embodiment of the present invention, including a transmitting device 61, a channel 62 to be detected, and a detecting device 63; a transmitting device 61 for generating a transmitting signal; and a channel 62 to be detected for transmitting the processing a transmitting signal generated by the transmitting device; the detecting device 63 is configured to receive the transmitted signal after the channel transmission processing by the channel to be detected to obtain a received signal, and acquire the transmitting signal generated by the transmitting device, and according to the receiving The signal and the transmission signal obtain a signal-to-noise ratio, and the signal-to-noise ratio is used to detect the quality of the channel to be detected.
  • the transmitting device 61 is a local transmitter corresponding to the channel to be detected;
  • the channel 62 to be detected includes a local transmitting channel, a radiating unit connection port, and a radiating unit coupler;
  • the local transmitting channel is configured to transmit the transmitting signal generated by the local transmitter;
  • the radiating unit connection port is used for transmitting The transmitting signal transmitted through the local transmitting channel;
  • the radiating unit coupler is configured to connect to the radiating unit The transmission signal transmitted coupling process; said detecting means adapted to: after receiving said radiating element The coupler couples the processed transmit signal to obtain the received signal.
  • the transmitting device 61 may be a reference transmitting unit; the channel 62 to be detected includes a radiating unit coupler, a radiating unit connecting port and a local receiving channel; and the radiating unit coupler is configured to generate the reference transmitting unit
  • the transmitting signal is coupled to receive; the radiating unit connection port is configured to receive the transmitting signal after the radiating unit coupler is coupled; and the local receiving channel is configured to transmit the receiving unit of the radiating unit
  • the detecting device is specifically configured to: receive the transmitting signal transmitted through the local receiving channel to obtain the received signal.
  • the detecting device 63 of this embodiment can be as shown in FIG.
  • the system of this embodiment may be configured by both a module in the transmitting direction and a module in the receiving direction, and the channel selecting module is used to select the detecting direction or the receiving direction. That is, the embodiment may also be:
  • the transmitting device includes: a local transmitter and a reference transmitting unit; the channel to be detected includes: a local transmitting channel, a local receiving channel, a radiating unit connecting port, and a radiating unit coupler; the system further includes: a first channel a selection module, a second channel selection module, and a reference receiving unit; the first channel selection module is respectively connected to the reference transmitting unit and the radiating unit coupler, and is configured to maintain a disconnected state when detecting a transmitting direction, to be disconnected Opening a connection of the reference transmitting unit and the radiating unit coupler, and maintaining a connected state when detecting the receiving direction to maintain a connection between the reference transmitting unit and the radiating unit coupler; the second channel selecting module respectively The radiating unit coupler is connected to the reference receiving unit for maintaining a connected state when detecting the transmitting direction to maintain the connection of the radiating unit coupler and the reference receiving unit, and to maintain the disconnected state when detecting the receiving direction to disconnect a connection of the radiating element coupler and the reference receiving unit;
  • the reference transmitting unit is configured to generate the transmitting signal when detecting a receiving direction; the radiating unit coupler is configured to perform coupling processing on the transmitting signal generated by the reference transmitting unit when detecting a receiving direction; a connection port for receiving the transmission signal after the radiation unit coupler coupling process when detecting a reception direction; the local reception channel is configured to transmit the transmission signal received by the radiation unit connection port when detecting a reception direction.
  • the radiation unit connection port is configured to transmit the transmission signal transmitted through the local transmission channel when detecting a transmission direction; the reference receiving unit is specifically configured to detect The receiving signal is received by the local receiving channel to receive the received signal, and the detecting device is specifically configured to receive the received signal obtained by the reference receiving unit.
  • the first channel selection module is further configured to select the channel to be detected in a plurality of receiving channels, or the second channel selecting module is further configured to select the to-be-detected among the plurality of transmitting channels Channel.
  • the signal-to-noise ratio is used for channel detection, due to various factors of the channel, such as! /Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise, etc. will eventually form the noise of the entire channel.
  • the signal-to-noise ratio can reflect the influence of various factors on the channel quality. Therefore, The signal-to-noise ratio is used for channel quality detection, which can ensure the accuracy of channel quality detection, and the detection method is simple and easy.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

L'invention concerne un procédé, un appareil et un système pour détecter la qualité d'un canal. Ce procédé consiste : à obtenir un signal d'envoi; un signal de réception, le signal de réception étant un signal produit après la transmission du signal d'envoi dans un canal en attente d'être détecté; à obtenir un rapport signal-bruit en fonction du signal d'envoi obtenu et du signal de réception reçu; et à détecter la qualité du canal en attente d'être détecté en fonction du rapport signal-bruit. Selon un mode de réalisation de l'invention, on peut détecter la qualité d'un canal d'une manière simple et précise.
PCT/CN2012/074540 2011-04-22 2012-04-23 Procédé, appareil et système de détection de la qualité d'un canal Ceased WO2012142976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110101982.XA CN102752241B (zh) 2011-04-22 2011-04-22 检测通道质量的方法、装置及系统
CN201110101982.X 2011-04-22

Publications (1)

Publication Number Publication Date
WO2012142976A1 true WO2012142976A1 (fr) 2012-10-26

Family

ID=47032144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/074540 Ceased WO2012142976A1 (fr) 2011-04-22 2012-04-23 Procédé, appareil et système de détection de la qualité d'un canal

Country Status (2)

Country Link
CN (1) CN102752241B (fr)
WO (1) WO2012142976A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106911400B (zh) * 2017-02-08 2021-08-27 广州新拓慧电子科技有限公司 互调处理装置及互调处理方法
CN107171747A (zh) * 2017-07-17 2017-09-15 广东欧珀移动通信有限公司 接收通路诊断装置、方法及系统、移动终端及存储介质
CN113271231B (zh) * 2020-02-14 2023-01-13 华为技术有限公司 一种检测设备、检测方法及处理器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1301417A (zh) * 1998-05-18 2001-06-27 奥根公司 包含馈送装置的天线设备和使用这种无线设备的手持无线通信设备
CN101155394A (zh) * 2006-09-26 2008-04-02 北京信威通信技术股份有限公司 一种无线通信系统中信道传输资源自适应分配的方法
US20090092179A1 (en) * 2007-10-03 2009-04-09 Chi-Tung Chang Method and a circuit for estimating the signal quality of a communication channel and a wireless receiving apparatus using the same
US20090180455A1 (en) * 2008-01-15 2009-07-16 Mukundan Ranganathan Method and system for cqi based adaptive diagonal loading for dmi-eq in hsdpa receivers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101800728A (zh) * 2010-03-08 2010-08-11 马红梅 Ofdm相关系数信噪比估计算法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1301417A (zh) * 1998-05-18 2001-06-27 奥根公司 包含馈送装置的天线设备和使用这种无线设备的手持无线通信设备
CN101155394A (zh) * 2006-09-26 2008-04-02 北京信威通信技术股份有限公司 一种无线通信系统中信道传输资源自适应分配的方法
US20090092179A1 (en) * 2007-10-03 2009-04-09 Chi-Tung Chang Method and a circuit for estimating the signal quality of a communication channel and a wireless receiving apparatus using the same
US20090180455A1 (en) * 2008-01-15 2009-07-16 Mukundan Ranganathan Method and system for cqi based adaptive diagonal loading for dmi-eq in hsdpa receivers

Also Published As

Publication number Publication date
CN102752241A (zh) 2012-10-24
CN102752241B (zh) 2015-07-08

Similar Documents

Publication Publication Date Title
CN101146314B (zh) 一种时分双工通信系统的驻波比检测装置及方法
US20110045786A1 (en) Apparatus and method for switching from reception to transmission
CN110098840B (zh) 一种射频装置及终端设备
JP2015149765A (ja) 無線通信装置のアンテナをチューニングするシステム及び方法
WO2011098020A1 (fr) Procédé d'essai d'ondes stationnaires, appareil d'essai d'ondes stationnaires et station de base
JPWO2011077862A1 (ja) 中継装置、中継システム、中継方法、無線通信システム、プログラム
WO2013189431A2 (fr) Procédé, appareil et unité radio distante pour la transmission de données de bande de base sans fil
WO2012103856A2 (fr) Dispositif et procédé de correction de communications
US20110053518A1 (en) Wireless communication performance test method, wireless communication test-use measurement device, and wireless communication performance test system
US20230239764A1 (en) Spatial reuse in wireless communication
WO2011160415A1 (fr) Moyen et procédé d'essai sur canaux multiples pour une unité radio distante
US9584386B2 (en) Node unit capable of measuring delay and distributed antenna system including the same
CN102594430A (zh) 一种多通道接收机射频响应的实时校准方法和装置
WO2014058432A1 (fr) Estimation de tos à l'aide de corrélation afin de supprimer les interférences externes
WO2020048277A1 (fr) Circuit radiofréquence et dispositif de communication
WO2018199580A1 (fr) Appareil et procédé de mesure du rapport d'onde stationnaire de tension d'une antenne dans un système de communication sans fil
WO2012142976A1 (fr) Procédé, appareil et système de détection de la qualité d'un canal
CN101984703A (zh) 确定射频远端设备下行功率的方法和装置
TW201820806A (zh) 對稱式中繼器及其測量天線隔離度的方法
CN108075846B (zh) 一种基站干扰检测方法及装置
WO2022002099A1 (fr) Procédé de détection d'ondes stationnaires, appareil de détection d'ondes stationnaires et dispositif de réseau
US20140355492A1 (en) Method and apparatus for monitoring performance, and remote radio unit
WO2020227926A1 (fr) Nœud de réseau radio avec amélioration de commande de gain automatique
CN103916176B (zh) 一种无线直放站及其天线校准方法
WO2019228338A1 (fr) Procédé et appareil de traitement de signal, système d'antennes distribuées et support de stockage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12773758

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12773758

Country of ref document: EP

Kind code of ref document: A1