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
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)
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 (fr) | 2010-03-12 | 2011-02-16 | Estimation de déséquilibre iq dépendant de la fréquence |
Publications (1)
Publication Number | Publication Date |
---|---|
IN2012DN06614A true IN2012DN06614A (fr) | 2015-10-23 |
Family
ID=44141888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN6614DEN2012 IN2012DN06614A (fr) | 2010-03-12 | 2011-02-16 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8331506B2 (fr) |
EP (1) | EP2545691B1 (fr) |
JP (1) | JP5885675B2 (fr) |
KR (1) | KR101763252B1 (fr) |
CN (1) | CN102783113B (fr) |
CA (1) | CA2793034C (fr) |
IN (1) | IN2012DN06614A (fr) |
TW (1) | TWI483596B (fr) |
WO (1) | WO2011110964A1 (fr) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US20140270015A1 (en) * | 2012-06-28 | 2014-09-18 | Vladimir Kravtsov | Inter-carrier interference phase noise compensation based on phase noise spectrum approximation |
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 |
US9281907B2 (en) | 2013-03-15 | 2016-03-08 | Analog Devices, Inc. | Quadrature error correction using polynomial models in tone calibration |
US9356732B2 (en) | 2013-03-15 | 2016-05-31 | Analog Devices, Inc. | Quadrature error detection and correction |
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 |
KR102385157B1 (ko) | 2016-03-23 | 2022-04-08 | 노키아 테크놀로지스 오와이 | 공통 위상 오차 및/또는 캐리어 간 간섭 |
US10439663B2 (en) * | 2016-04-06 | 2019-10-08 | Qualcomm Incorporated | Methods and apparatus for phase noise estimation in data symbols for millimeter wave communications |
KR101966131B1 (ko) * | 2016-04-25 | 2019-04-05 | 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 (fr) * | 2016-07-06 | 2021-06-02 | Nxp B.V. | Module de correction de défaut iq |
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 |
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 |
CN115362645B (zh) | 2020-04-03 | 2024-07-05 | 大陆汽车科技有限公司 | 具有csi误差的有噪过载无线通信系统中离散数字信号的估计方法 |
WO2022010014A1 (fr) * | 2020-07-10 | 2022-01-13 | 엘지전자 주식회사 | Procédé et appareil d'estimation de bruit de phase dans un système de communication sans fil |
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 (fr) * | 2022-02-01 | 2023-08-10 | Trellisware Technologies, Inc. | Caractérisation d'interférences de canaux adjacents pour une excision d'interférences intrabande dans des systèmes de communication sans fil |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6181199B1 (en) | 1999-01-07 | 2001-01-30 | Ericsson Inc. | Power IQ modulation systems and methods |
EP1339197A1 (fr) * | 2002-02-21 | 2003-08-27 | Motorola, Inc. | Compensation de la désadaptation I/Q dans un récepteur OFDM en présence de décalage de fréquence |
WO2003101064A1 (fr) * | 2002-05-23 | 2003-12-04 | Interuniversitair Microelektronica Centrum Vzw | Procede et dispositif permettant d'estimer et de compenser le desequilibre iq |
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 |
DE602005010661D1 (de) * | 2005-03-03 | 2008-12-11 | Dibcom | Schätzung des Phasen- und Verstärkungsversatzes mittels eines gewichteten Durchschnitts von Werten, die in einer Pluralität von Signalteilbändern kalkuliert sind |
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 |
EP2223452A1 (fr) * | 2007-12-18 | 2010-09-01 | Skyworks Solutions, Inc. | Compensation de déséquilibre pour des systèmes de communication par conversion directe |
WO2010000297A1 (fr) * | 2008-06-30 | 2010-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Compensation de déséquilibre iq en présence de décalage de porteuse |
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 |
CN102282900B (zh) * | 2008-11-12 | 2015-01-07 | 新加坡科技研究局 | 多重存取通讯系统 |
-
2010
- 2010-03-12 US US12/722,666 patent/US8331506B2/en active Active
-
2011
- 2011-02-16 CA CA2793034A patent/CA2793034C/fr active Active
- 2011-02-16 EP EP11713046.8A patent/EP2545691B1/fr active Active
- 2011-02-16 JP JP2012556618A patent/JP5885675B2/ja active Active
- 2011-02-16 CN CN201180013611.4A patent/CN102783113B/zh active Active
- 2011-02-16 KR KR1020127026661A patent/KR101763252B1/ko active IP Right Grant
- 2011-02-16 WO PCT/IB2011/050633 patent/WO2011110964A1/fr active Application Filing
- 2011-02-16 IN IN6614DEN2012 patent/IN2012DN06614A/en unknown
- 2011-03-11 TW TW100108412A patent/TWI483596B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20110222638A1 (en) | 2011-09-15 |
CN102783113B (zh) | 2015-06-17 |
WO2011110964A1 (fr) | 2011-09-15 |
TWI483596B (zh) | 2015-05-01 |
EP2545691A1 (fr) | 2013-01-16 |
CA2793034A1 (fr) | 2011-09-15 |
CN102783113A (zh) | 2012-11-14 |
KR101763252B1 (ko) | 2017-07-31 |
KR20130047688A (ko) | 2013-05-08 |
JP5885675B2 (ja) | 2016-03-15 |
US8331506B2 (en) | 2012-12-11 |
EP2545691B1 (fr) | 2015-08-05 |
TW201220777A (en) | 2012-05-16 |
CA2793034C (fr) | 2018-01-23 |
JP2013522943A (ja) | 2013-06-13 |
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