FR2692742B1 - Procede et appareil de traitement d'un signal recu module par des signaux numeriques . - Google Patents

Procede et appareil de traitement d'un signal recu module par des signaux numeriques .

Info

Publication number
FR2692742B1
FR2692742B1 FR9306579A FR9306579A FR2692742B1 FR 2692742 B1 FR2692742 B1 FR 2692742B1 FR 9306579 A FR9306579 A FR 9306579A FR 9306579 A FR9306579 A FR 9306579A FR 2692742 B1 FR2692742 B1 FR 2692742B1
Authority
FR
France
Prior art keywords
processing
received signal
digital signals
signal modulated
modulated
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
FR9306579A
Other languages
English (en)
Other versions
FR2692742A1 (fr
Inventor
Ian Juso Dedic
Dominic Charles Royce
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of FR2692742A1 publication Critical patent/FR2692742A1/fr
Application granted granted Critical
Publication of FR2692742B1 publication Critical patent/FR2692742B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only
    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
FR9306579A 1992-06-03 1993-06-02 Procede et appareil de traitement d'un signal recu module par des signaux numeriques . Expired - Fee Related FR2692742B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929211712A GB9211712D0 (en) 1992-06-03 1992-06-03 Gm digital receive processing

Publications (2)

Publication Number Publication Date
FR2692742A1 FR2692742A1 (fr) 1993-12-24
FR2692742B1 true FR2692742B1 (fr) 1997-01-31

Family

ID=10716441

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9306579A Expired - Fee Related FR2692742B1 (fr) 1992-06-03 1993-06-02 Procede et appareil de traitement d'un signal recu module par des signaux numeriques .

Country Status (4)

Country Link
US (1) US5442655A (fr)
JP (1) JP3247488B2 (fr)
FR (1) FR2692742B1 (fr)
GB (1) GB9211712D0 (fr)

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JPH06237275A (ja) * 1993-02-10 1994-08-23 Fujitsu Ltd 特殊アイパターンおよび特殊アイパターンを用いた変復調方式
US5774600A (en) * 1995-04-18 1998-06-30 Advanced Micro Devices, Inc. Method of pixel averaging in a video processing apparatus
JPH0918528A (ja) * 1995-06-27 1997-01-17 Sony Corp 制御信号検出方法及び無線受信装置
US5838735A (en) * 1996-07-08 1998-11-17 Telefonaktiebolaget Lm Ericsson Method and apparatus for compensating for a varying d.c. offset in a sampled signal
FI101919B (fi) * 1996-11-21 1998-09-15 Nokia Telecommunications Oy Menetelmä impulssivasteen laskemiseksi ja vastaanotin
FI117494B (fi) 1996-11-29 2006-10-31 Nokia Corp Menetelmä digitaalisessa kvadratuurimodulaattorissa ja kvadratuuridemodulaattorissa, digitaalinen kvadratuurimodulaattori ja kvadratuuridemodulaattori
GB2320864B (en) * 1996-12-31 2001-07-11 Nokia Mobile Phones Ltd Signal Offset Elimination
FR2760926B1 (fr) * 1997-03-13 1999-04-16 Alsthom Cge Alcatel Dispositif de supression des sauts parasites de composante continue pour recepteur radio de type frequence intermediaire zero et procede de suppression correspondant
US6771721B1 (en) 1997-06-20 2004-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for eliminating audio clicks in a radio receiver
JP3095067B2 (ja) 1997-12-04 2000-10-03 日本電気株式会社 Ｄｃオフセットキャンセラーおよびこれを備えた受信機と通信システムとｄｃオフセットキャンセル方法
DE69829835T2 (de) 1998-01-23 2005-11-24 Siemens Ag Funksender und Funkempfänger
US6101217A (en) * 1998-05-11 2000-08-08 Globespan Semiconductor, Inc. System and method for demodulating digital information from an odd constellation
US6609220B2 (en) * 1998-09-30 2003-08-19 Ando Electric Co., Ltd. Method of manufacturing Q-value and device therefor
US7197090B1 (en) 1999-01-29 2007-03-27 Northrop Grumman Corporation Adaptive decision regions and metrics
EP1033852A1 (fr) * 1999-02-05 2000-09-06 Alcatel Suppression du décalage de composante continue pour récepteur radio de type fréquence intermédiaire zéro
US6757340B1 (en) 1999-02-22 2004-06-29 Telefonaktiebolaget L M Ericsson (Publ) Radio receiver and method for preloading an average DC-offset into a channel filter
FI107212B (fi) * 1999-03-26 2001-06-15 Nokia Networks Oy I/Q-modulaattorin tasajännitesiirtymän korjaus
US6370205B1 (en) 1999-07-02 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for performing DC-offset compensation in a radio receiver
US6449320B1 (en) 1999-07-02 2002-09-10 Telefonaktiebolaget Lm Ericsson (Publ) Equalization with DC-offset compensation
DE19933266A1 (de) * 1999-07-15 2000-11-02 Siemens Ag Vorrichtung zum Empfangen von Funksignalen
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
US6373909B2 (en) 1999-10-22 2002-04-16 Telefonaktiebolaget Lm Ericsson (Publ) Communications terminal having a receiver and method for removing known interferers from a digitized intermediate frequency signal
US6907235B2 (en) * 2001-01-02 2005-06-14 Texas Instruments Incorporated Apparatus and method for canceling DC offset in communications signals
US6901121B1 (en) 2001-02-20 2005-05-31 Comsys Communication & Signal Processing Ltd. Compensation of DC offset impairment in a communications receiver
US6977977B1 (en) 2001-02-20 2005-12-20 Comsys Communication & Signal Processing Ltd. Compensation of I/Q gain mismatch in a communications receiver
RU2005101209A (ru) * 2002-06-20 2005-08-27 Квэлкомм Инкорпорейтед (US) Смещения по постоянному току в системах связи
US8559559B2 (en) * 2002-06-20 2013-10-15 Qualcomm, Incorporated Method and apparatus for compensating DC offsets in communication systems
JP3898115B2 (ja) * 2002-11-12 2007-03-28 株式会社エヌ・ティ・ティ・ドコモ 受信装置、復調器及び通信方法
US7113760B1 (en) 2003-04-29 2006-09-26 Ami Semiconductor, Inc. Direct conversion receiver for amplitude modulated signals using linear/log filtering
US7139546B1 (en) 2003-04-29 2006-11-21 Ami Semiconductor, Inc. Up-conversion of a down-converted baseband signal in a direct conversion architecture without the baseband signal passing through active elements
US7006809B2 (en) * 2003-05-06 2006-02-28 Ami Semiconductor, Inc. Adaptive diversity receiver architecture
US7197091B1 (en) 2003-05-06 2007-03-27 Ami Semiconductor, Inc. Direct conversion receiver with direct current offset correction circuitry
US7369813B2 (en) * 2003-05-14 2008-05-06 Telefonaktiebolaget L M Ericsson (Publ) Fast calibration of electronic components
US7154966B2 (en) * 2003-06-30 2006-12-26 Telefonaktiebolaget L M Ericsson (Publ) Method and system for M-QAM detection in communication systems
US7693242B2 (en) * 2005-06-14 2010-04-06 Freescale Semiconductor, Inc. DC offset correction for constant envelope signals
US8295304B1 (en) 2007-12-27 2012-10-23 Exalt Communications Incorporated Adaptive multi-service data framing
US8428186B1 (en) * 2007-12-27 2013-04-23 Exalt Communications Incorporated Decision directed DC offset removal
JP5281979B2 (ja) * 2009-07-21 2013-09-04 株式会社五洋電子 受信機
US8611356B2 (en) 2009-11-13 2013-12-17 Exalt Communications Incorporated Apparatus for ethernet traffic aggregation of radio links
WO2012167555A1 (fr) * 2011-11-15 2012-12-13 华为技术有限公司 Procédé et appareil permettant de corriger des signaux en phase et en quadrature
JP5710817B1 (ja) * 2014-03-13 2015-04-30 エピクルー株式会社 半導体ウェーハ位置表示システム、半導体ウェーハ位置表示方法および半導体ウェーハ位置表示プログラム
WO2016142424A1 (fr) * 2015-03-09 2016-09-15 Sony Corporation Dispositif et procédé pour couler un composant

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Publication number Priority date Publication date Assignee Title
FR2618625B1 (fr) * 1987-07-24 1989-11-24 Labo Electronique Physique Dispositif d'amelioration du decodage de signaux numeriques lors de transmissions en modulation de frequence
US5321726A (en) * 1988-01-13 1994-06-14 Hewlett-Packard Company Calibration of vector demodulator using statistical analysis
EP0324581A3 (fr) * 1988-01-13 1990-11-07 Hewlett-Packard Company Calibrage de démodulateurs à vecteurs utilisant une analyse statistique
JPH061908B2 (ja) * 1988-02-02 1994-01-05 郵政省通信総合研究所長 伝送路歪補償方式
DE3889326D1 (de) * 1988-05-27 1994-06-01 Itt Ind Gmbh Deutsche Korrekturschaltung für ein digitales Quadratur-Signalpaar.
US5241702A (en) * 1990-09-06 1993-08-31 Telefonaktiebolaget L M Ericsson D.c. offset compensation in a radio receiver
KR950003666B1 (ko) * 1990-12-31 1995-04-17 삼성전자 주식회사 지엠에스케이신호복조방법 및 그 장치
US5175749A (en) * 1991-01-25 1992-12-29 Motorola, Inc. Apparatus and method for dc offset correction in a receiver

Also Published As

Publication number Publication date
JPH0669820A (ja) 1994-03-11
FR2692742A1 (fr) 1993-12-24
US5442655A (en) 1995-08-15
GB9211712D0 (en) 1992-07-15
JP3247488B2 (ja) 2002-01-15

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Effective date: 20110228