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 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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

Similar Documents

Publication Publication Date Title
IN2012DN06614A (fr)
EP4262162A3 (fr) Acquisition de canal utilisant un signal pilote orthogonal modulé dans l'espace temps-fréquence
WO2011100583A3 (fr) Système de communication numérique à utiliser dans canaux à bruit élevé
WO2017119992A3 (fr) Procédés et appareil implémentant un schéma de transmission de données pour un internet des objets à bande étroite (nb-iot)
WO2009156510A3 (fr) Émetteur-récepteur tolérant aux interférences de son propre émetteur et procédés de réception
AU2015362066A8 (en) Multicarrier communications system
WO2010147515A8 (fr) Procédé de calibrage d'antennes dans un système de communication à large bande
TW200721751A (en) Performing blind scanning in a receiver
MX2016010994A (es) Tecnicas para reportar informacion de estado de canal (csi) para una banda de espectro de frecuencia de radio sin licencia.
WO2011080644A3 (fr) Analyseur de canal radio pour déterminer des décalages doppler à de multiples fréquences d'un signal à large bande
WO2011051252A3 (fr) Procédé et appareil pour obtention d'une qualité de voie
WO2012110930A3 (fr) Récepteur de satellite à annulation de signal brouilleur
WO2008119052A3 (fr) Estimation de canal avec suppression efficace de l'interférence co-canal
WO2014053939A3 (fr) Équipement utilisateur, noeud de réseau et procédés associés
ATE518315T1 (de) Interferenzlöschung mit leistungsschätzung und nachführung für drahtlose kommunikation
WO2015021285A3 (fr) Récepteur intra-fréquence et inter-rat
WO2014150192A3 (fr) Systèmes et procédés de déploiement, de contrôle et de gestion d'un équipement de communication sans fil
WO2012092900A3 (fr) Procédé, dispositif et système d'estimation de décalage de fréquence de canal
WO2009137250A3 (fr) Procédé et appareil pour une annulation d'interférence dans un système de communication sans fil
HK1123139A1 (en) Reduced complexity channel estimation in ofdm systems ofdm
GB2542521A (en) Channel state information (CSI) estimation and applications for in-band on-channel radio receivers
WO2008049714A8 (fr) Estimation de puissance de signal combinée robuste et à faible complexité
WO2008115898A3 (fr) Egalisation de domaine de fréquence pour des canaux à temps variable
WO2014153370A3 (fr) Procédés pour la création et la réception de signaux multi-porteuses, appareil de codification, de communication et de détection, procédé de correction de bruit accordable pour des signaux de chevauchants, procédé d'estimation itérative pour des signaux chevauchants
WO2014058375A3 (fr) Estimation de canal dans un système de communication sans fil multi-antenne