DE60232516D1 - Iq-ungleichgewicht - Google Patents

Iq-ungleichgewicht

Info

Publication number
DE60232516D1
DE60232516D1 DE60232516T DE60232516T DE60232516D1 DE 60232516 D1 DE60232516 D1 DE 60232516D1 DE 60232516 T DE60232516 T DE 60232516T DE 60232516 T DE60232516 T DE 60232516T DE 60232516 D1 DE60232516 D1 DE 60232516D1
Authority
DE
Germany
Prior art keywords
phase
quadrature
imbalance
baseband
direct conversion
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.)
Expired - Fee Related
Application number
DE60232516T
Other languages
English (en)
Inventor
Tommi Auranen
Juha Kajava
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Nokia Oyj filed Critical Nokia Oyj
Application granted granted Critical
Publication of DE60232516D1 publication Critical patent/DE60232516D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Optical Communication System (AREA)
DE60232516T 2001-06-29 2002-06-25 Iq-ungleichgewicht Expired - Fee Related DE60232516D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20011426 2001-06-29
PCT/FI2002/000555 WO2003003686A1 (en) 2001-06-29 2002-06-25 Iq-imbalance

Publications (1)

Publication Number Publication Date
DE60232516D1 true DE60232516D1 (de) 2009-07-16

Family

ID=8561555

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60232516T Expired - Fee Related DE60232516D1 (de) 2001-06-29 2002-06-25 Iq-ungleichgewicht

Country Status (6)

Country Link
US (2) US7336730B2 (de)
EP (1) EP1405479B1 (de)
AT (1) ATE433242T1 (de)
DE (1) DE60232516D1 (de)
ES (1) ES2323856T3 (de)
WO (1) WO2003003686A1 (de)

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SE513669C2 (sv) 1999-01-18 2000-10-16 Rolf Skoeld Vattenhaltig metallbearbetningsvätska
FR2829890B1 (fr) * 2001-09-14 2003-12-05 Astrium Sas Procede et systeme de diffusion d'informations sous forme numerique depuis un satellite
US7653164B2 (en) 2001-12-31 2010-01-26 Intel Corporation Adaptive IQ imbalance correction for multicarrier wireless communication systems
WO2003101064A1 (en) 2002-05-23 2003-12-04 Interuniversitair Microelektronica Centrum Vzw Method and device for estimating and compensating iq imbalance
JP3967226B2 (ja) * 2002-08-07 2007-08-29 三星電子株式会社 無線機
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
US20050036572A1 (en) * 2003-08-14 2005-02-17 Khurram Muhammad Method of rate conversion together with I-Q mismatch correction and sampler phase adjustment in direct sampling based down-conversion
WO2005029798A1 (en) * 2003-09-15 2005-03-31 Intel Corporation Adaptive iq imbalance correction for multicarrier wireless communication systems
DE102004021867B4 (de) * 2004-05-04 2012-02-16 Infineon Technologies Ag Verfahren zur Signalverarbeitung, insbesondere in einem Hochfrequenzempfänger und Signalaufbereitungsschaltung
JP4042723B2 (ja) 2004-06-01 2008-02-06 ソニー株式会社 通信システム、端末および通信方法
GB2419483B (en) * 2004-09-17 2008-12-24 Motorola Inc Demodulator for use in wireless communucations and receiver, method and terminal using it
FR2878393B1 (fr) * 2004-11-23 2007-01-12 Commissariat Energie Atomique Procede et dispositif de compensation de desequilibres d'un recepteur
KR101075610B1 (ko) 2005-01-07 2011-10-21 삼성전자주식회사 직교 위상 편이 키잉 복조기에서 위상 부정합 보상 장치
FR2880765B1 (fr) * 2005-01-12 2007-02-23 Sagem Systeme et procede de reception d'un flux numerique
FR2888429A1 (fr) * 2005-07-06 2007-01-12 St Microelectronics Sa Correction des defauts d'appariement entre deux voies i et q
US8194754B2 (en) * 2005-10-13 2012-06-05 Lg Electronics Inc. Method for processing a signal and apparatus for processing a signal
EP1946309A4 (de) * 2005-10-13 2010-01-06 Lg Electronics Inc Methode und vorrichtung zur signalverarbeitung
WO2007043844A1 (en) * 2005-10-13 2007-04-19 Lg Electronics Inc. Method and apparatus for processing a signal
JP4539539B2 (ja) * 2005-11-18 2010-09-08 株式会社デンソー 軟判定値補正方法，受信装置，プログラム
WO2007063855A1 (ja) * 2005-11-29 2007-06-07 Matsushita Electric Industrial Co., Ltd. マルチキャリア送信装置、マルチキャリア受信装置、送信方法及び受信方法
US20120292367A1 (en) 2006-01-31 2012-11-22 Ethicon Endo-Surgery, Inc. Robotically-controlled end effector
KR100819391B1 (ko) 2007-02-08 2008-04-07 지씨티 세미컨덕터 인코포레이티드 Ｉｑ 불일치 측정 장치
JP4272236B2 (ja) * 2007-03-14 2009-06-03 東芝テック株式会社 無線タグ通信装置
WO2008146096A1 (en) * 2007-05-31 2008-12-04 Freescale Semiconductor, Inc. Integrated circuit, wireless communication unit and method for determining quadrature imbalance
US8036319B2 (en) * 2007-11-01 2011-10-11 Intel Corporation Direct conversion receiver and method for correcting phase imbalance therein
US8233524B2 (en) * 2009-03-12 2012-07-31 Freescale Semiconductor, Inc. Radio transmitter IQ imbalance measurement and correction methods and apparatus
US8879995B2 (en) * 2009-12-23 2014-11-04 Viconics Electronics Inc. Wireless power transmission using phased array antennae
US8711905B2 (en) * 2010-05-27 2014-04-29 Intel Corporation Calibration of quadrature imbalances using wideband signals
EP2413524B1 (de) 2010-07-28 2013-01-16 Telefonaktiebolaget L M Ericsson (PUBL) Verfahren und Vorrichtung zur Bestimmung von Signalpfadeigenschaften
US9667358B2 (en) 2011-06-28 2017-05-30 Keysight Technologies, Inc. Impairment compensation
US9602225B2 (en) * 2011-06-28 2017-03-21 Keysight Technologies, Inc. Impairment compensation
US9124396B2 (en) * 2011-07-28 2015-09-01 Allen LeRoy Limberg COFDM digital television receivers for iterative-diversity reception
KR20140084290A (ko) 2011-10-27 2014-07-04 엘에스아이 코포레이션 디지털 전치 왜곡(dpd) 및 다른 비선형 애플리케이션을 위해 사용자 정의의 비선형 함수와 함께 명령어 집합을 갖는 프로세서
RU2012102842A (ru) 2012-01-27 2013-08-10 ЭлЭсАй Корпорейшн Инкрементное обнаружение преамбулы
TWI466506B (zh) * 2012-02-22 2014-12-21 Realtek Semiconductor Corp 用以補償傳送器／接收器中同相訊號與正交訊號不匹配的方法
US8442150B1 (en) 2012-02-24 2013-05-14 National Instruments Corporation Measurement of transmitter impairments using offset local oscillators
US9020019B2 (en) 2012-02-24 2015-04-28 National Instruments Corporation Computing I/Q impairments at system output based on I/Q impairments at system input
US8638893B2 (en) 2012-02-24 2014-01-28 National Instruments Corporation Mechanisms for the correction of I/Q impairments
US9094113B2 (en) * 2013-03-15 2015-07-28 Qualcomm Incorporated Apparatus and method for reducing phase noise in near field communication device signaling
US9813223B2 (en) 2013-04-17 2017-11-07 Intel Corporation Non-linear modeling of a physical system using direct optimization of look-up table values
US9923595B2 (en) 2013-04-17 2018-03-20 Intel Corporation Digital predistortion for dual-band power amplifiers
US9379929B2 (en) 2014-03-20 2016-06-28 Qualcomm Incorporated Phase imbalance calibration
US9833241B2 (en) 2014-04-16 2017-12-05 Ethicon Llc Surgical fastener cartridges with driver stabilizing arrangements
CN116683923B (zh) * 2023-07-28 2023-10-17 上海矽昌微电子有限公司 一种对iq不平衡进行估计校正的通信方法及装置

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US5003621A (en) * 1989-11-02 1991-03-26 Motorola, Inc. Direct conversion FM receiver
US5369411A (en) * 1993-06-01 1994-11-29 Westinghouse Electric Corporation Imbalance correction of in-phase and quadrature phase return signals
US5396656A (en) * 1993-09-02 1995-03-07 Motorola, Inc. Method for determining desired components of quadrature modulated signals
JP3373960B2 (ja) 1994-11-29 2003-02-04 三洋電機株式会社 ダイレクトコンバージョン方式受信機
US5949821A (en) * 1996-08-05 1999-09-07 Motorola, Inc. Method and apparatus for correcting phase and gain imbalance between in-phase (I) and quadrature (Q) components of a received signal based on a determination of peak amplitudes
FR2755335B1 (fr) * 1996-10-24 1998-11-27 Alsthom Cge Alcatel Estimateur du defaut de balance d'un modulateur en quadrature et etage de modulation l'utilisant
US6009317A (en) * 1997-01-17 1999-12-28 Ericsson Inc. Method and apparatus for compensating for imbalances between quadrature signals
US6377620B1 (en) * 1999-01-19 2002-04-23 Interdigital Technology Corporation Balancing amplitude and phase
US6490326B1 (en) * 1999-08-04 2002-12-03 Motorola, Inc. Method and apparatus to correct for in-phase and quadrature-phase gain imbalance in communication circuitry
US6484042B1 (en) * 1999-08-25 2002-11-19 Skyworks Solutions, Inc. Secondary automatic gain control loops for direct conversion CDMA receivers
DE19948383A1 (de) * 1999-10-07 2001-04-12 Rohde & Schwarz Verfahren zum empfangsseitigen Bestimmen der Nutzdatenkonstellation eines nach dem DVB-T-Standard modulierten Multiträger-Signals für die Berechnung der Restträgerleistung bzw. Verbesserung der Demodulation
US7061994B2 (en) * 2001-06-21 2006-06-13 Flarion Technologies, Inc. Methods and apparatus for I/Q imbalance compensation

Also Published As

Publication number Publication date
ATE433242T1 (de) 2009-06-15
EP1405479B1 (de) 2009-06-03
WO2003003686A1 (en) 2003-01-09
EP1405479A1 (de) 2004-04-07
US20080212711A1 (en) 2008-09-04
US20040156450A1 (en) 2004-08-12
ES2323856T3 (es) 2009-07-27
US7336730B2 (en) 2008-02-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee