IN2012DN06614A - - Google Patents

Info

Publication number
IN2012DN06614A
IN2012DN06614A IN6614DEN2012A IN2012DN06614A IN 2012DN06614 A IN2012DN06614 A IN 2012DN06614A IN 6614DEN2012 A IN6614DEN2012 A IN 6614DEN2012A IN 2012DN06614 A IN2012DN06614 A IN 2012DN06614A
Authority
IN
India
Prior art keywords
imbalance
estimated
pilot signals
sub band
type pilot
Prior art date
Application number
Other languages
English (en)
Inventor
Chester Park
Leif Wilhelmsson
Lars Sundström
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IN2012DN06614A publication Critical patent/IN2012DN06614A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • H04L27/3863—Compensation for quadrature error in the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/14—Channel dividing arrangements, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IN6614DEN2012 2010-03-12 2011-02-16 IN2012DN06614A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/722,666 US8331506B2 (en) 2010-03-12 2010-03-12 Frequency-dependent IQ imbalance estimation
PCT/IB2011/050633 WO2011110964A1 (en) 2010-03-12 2011-02-16 Frequency-dependent iq imbalance estimation

Publications (1)

Publication Number Publication Date
IN2012DN06614A true IN2012DN06614A (ja) 2015-10-23

Family

ID=44141888

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6614DEN2012 IN2012DN06614A (ja) 2010-03-12 2011-02-16

Country Status (9)

Country Link
US (1) US8331506B2 (ja)
EP (1) EP2545691B1 (ja)
JP (1) JP5885675B2 (ja)
KR (1) KR101763252B1 (ja)
CN (1) CN102783113B (ja)
CA (1) CA2793034C (ja)
IN (1) IN2012DN06614A (ja)
TW (1) TWI483596B (ja)
WO (1) WO2011110964A1 (ja)

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US8526552B1 (en) 2009-08-25 2013-09-03 Marvell International Ltd. Noise estimation in communication receivers
US8483641B1 (en) 2010-07-28 2013-07-09 Marvell International Ltd. Validation and stabilization of noise matrices
US8548096B2 (en) * 2010-12-31 2013-10-01 Telefonaktiebolaget L M Ericsson (Publ) Controllable frequency offset for inphase and Quadrature (IQ) imbalance estimation
TWI462544B (zh) * 2011-11-16 2014-11-21 Univ Nat Chiao Tung 對頻率相依ｉ／ｑ不平衡的補償方法及其裝置
US8929934B2 (en) * 2012-04-25 2015-01-06 Intel Mobile Communications GmbH Communication devices and methods for operating a communication device
WO2014003598A1 (en) * 2012-06-28 2014-01-03 Intel Corporation Inter-carrier interference phase noise compensation
TWI456959B (zh) * 2012-07-11 2014-10-11 Realtek Semiconductor Corp 補償無線通訊系統之訊號不平衡的方法
US8976914B2 (en) * 2012-07-27 2015-03-10 Texas Instruments Incorporated Multi-tap IQ imbalance estimation and correction circuit and method
US9356732B2 (en) 2013-03-15 2016-05-31 Analog Devices, Inc. Quadrature error detection and correction
US9281907B2 (en) 2013-03-15 2016-03-08 Analog Devices, Inc. Quadrature error correction using polynomial models in tone calibration
US9300444B2 (en) 2013-07-25 2016-03-29 Analog Devices, Inc. Wideband quadrature error correction
US11012201B2 (en) 2013-05-20 2021-05-18 Analog Devices, Inc. Wideband quadrature error detection and correction
US9577689B2 (en) 2014-02-18 2017-02-21 Analog Devices, Inc. Apparatus and methods for wide bandwidth analog-to-digital conversion of quadrature receive signals
US9184975B1 (en) * 2014-11-20 2015-11-10 The United States Of America As Represented By The Secretary Of The Air Force Methods and apparatus for wideband imbalance compensation
GB2537800B (en) * 2014-12-22 2018-05-30 Imagination Tech Ltd IQ imbalance estimator
TWI555360B (zh) * 2015-03-27 2016-10-21 In the uplink transmission system to solve the radio frequency is not perfect joint estimation compensation method
US9698917B2 (en) * 2015-03-31 2017-07-04 Nokia Technologies Oy Methods and apparatus for mitigation of radio-frequency impairments in wireless network communication
EP4221414A1 (en) 2016-03-23 2023-08-02 Nokia Technologies Oy Common phase error and/or inter-carrier interference
US10439663B2 (en) * 2016-04-06 2019-10-08 Qualcomm Incorporated Methods and apparatus for phase noise estimation in data symbols for millimeter wave communications
WO2017188591A1 (ko) * 2016-04-25 2017-11-02 엘지전자 주식회사 무선 통신 시스템에서 위상 잡음 추정을 위한 신호 전송 방법
CN109075950B (zh) * 2016-05-09 2022-02-22 苹果公司 用于5g系统的相位补偿参考信号
EP3267646B1 (en) 2016-07-06 2021-06-02 Nxp B.V. Iq mismatch correction module
US10122568B2 (en) * 2016-07-07 2018-11-06 Microchip Technology Incorporated Digital compensation of IQ coupling in communication receivers
US9906384B1 (en) * 2016-09-26 2018-02-27 Nxp B.V. Multiple-tap compensation and calibration
CN108282312B (zh) * 2017-01-06 2020-09-01 电信科学技术研究院 一种上行传输方法、终端及基站
US10277450B2 (en) 2017-02-23 2019-04-30 Mediatek Inc. Circuit, method, and receiver apparatus for performing on-the-fly IQ mismatch compensation
US10728081B1 (en) 2019-03-15 2020-07-28 Kabushiki Kaisha Toshiba Wideband TX IQ imbalance estimation
CN114641972B (zh) 2019-10-29 2025-02-07 大陆汽车科技有限公司 估计过载通信信道中的发射符号向量的方法
US11012273B1 (en) 2019-12-31 2021-05-18 Hughes Network Systems, Llc Compensating for frequency-dependent I-Q phase imbalance
CN111355501B (zh) * 2020-03-11 2021-12-10 成都振芯科技股份有限公司 一种tdd系统宽带发射器正交误差校正系统及方法
JP2023520245A (ja) * 2020-04-03 2023-05-16 コンチネンタル オートモーティヴ テクロノジーズ ゲー・エム・ベー・ハー Ｃｓｉエラーを伴うノイズの多い過負荷無線通信システムにおける離散デジタル信号の推定方法
WO2022010014A1 (ko) * 2020-07-10 2022-01-13 엘지전자 주식회사 무선 통신 시스템에서 위상 잡음의 추정 방법 및 그 장치
US11688410B2 (en) 2020-09-14 2023-06-27 Maxlinear, Inc. Receive path in-phase and quadrature imbalance correction using circuit noise
US11374803B2 (en) 2020-10-16 2022-06-28 Analog Devices, Inc. Quadrature error correction for radio transceivers
CN112887238B (zh) * 2021-05-06 2021-07-20 上海擎昆信息科技有限公司 一种iq不平衡的校正方法及装置、接收机
CN114050867B (zh) * 2022-01-07 2022-04-22 高勘(广州)技术有限公司 信号补偿方法、装置、设备及存储介质
WO2023150180A2 (en) * 2022-02-01 2023-08-10 Trellisware Technologies, Inc. Adjacent-channel interference characterization for in-band interference excision in wireless communication systems
KR102819297B1 (ko) * 2022-03-29 2025-06-12 한국전자통신연구원 Iq 불균형 보상 방법 및 장치

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US6181199B1 (en) 1999-01-07 2001-01-30 Ericsson Inc. Power IQ modulation systems and methods
EP1339197A1 (en) * 2002-02-21 2003-08-27 Motorola, Inc. I/Q Mismatch compensation in an OFDM receiver in presence of frequency offset
EP1506654A1 (en) * 2002-05-23 2005-02-16 Interuniversitair Microelektronica Centrum Vzw Method and device for estimating and compensating iq imbalance
US7433298B1 (en) * 2002-08-19 2008-10-07 Marvell International Ltd. Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications
US7633994B2 (en) * 2004-07-30 2009-12-15 Rearden, LLC. System and method for distributed input-distributed output wireless communications
EP1699202B1 (en) * 2005-03-03 2008-10-29 Dibcom Estimation of phase and gain mismatches by means of a weighted average of values that are calculated in a plurality of signal subbands
US7813374B2 (en) * 2005-06-29 2010-10-12 Broadcom Corporation Multiple protocol wireless communication baseband transceiver
US7995981B2 (en) * 2005-10-31 2011-08-09 Silicon Laboratories Inc. Receiver with image rejection calibration at an undesired picture carrier and method therefor
US7962113B2 (en) * 2005-10-31 2011-06-14 Silicon Laboratories Inc. Receiver with multi-tone wideband I/Q mismatch calibration and method therefor
US9253009B2 (en) * 2007-01-05 2016-02-02 Qualcomm Incorporated High performance station
WO2009082457A1 (en) * 2007-12-18 2009-07-02 Skyworks Solutions, Inc Imbalance compensation for direct conversion communication systems
CN102077538A (zh) * 2008-06-30 2011-05-25 爱立信电话股份有限公司 存在载波偏移情况中的iq不平衡补偿
JP5102738B2 (ja) * 2008-10-27 2012-12-19 シャープ株式会社 Ｉｑミスマッチ補正回路
US20110211549A1 (en) * 2008-11-12 2011-09-01 Agency For Science, Technology And Research Multiple access communication system

Also Published As

Publication number Publication date
US20110222638A1 (en) 2011-09-15
CN102783113B (zh) 2015-06-17
JP5885675B2 (ja) 2016-03-15
CA2793034A1 (en) 2011-09-15
TW201220777A (en) 2012-05-16
CA2793034C (en) 2018-01-23
TWI483596B (zh) 2015-05-01
CN102783113A (zh) 2012-11-14
JP2013522943A (ja) 2013-06-13
KR20130047688A (ko) 2013-05-08
EP2545691A1 (en) 2013-01-16
KR101763252B1 (ko) 2017-07-31
EP2545691B1 (en) 2015-08-05
US8331506B2 (en) 2012-12-11
WO2011110964A1 (en) 2011-09-15

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