JPS55700A - Device for training adaptive equalizer - Google Patents

Device for training adaptive equalizer

Info

Publication number
JPS55700A
JPS55700A JP7317379A JP7317379A JPS55700A JP S55700 A JPS55700 A JP S55700A JP 7317379 A JP7317379 A JP 7317379A JP 7317379 A JP7317379 A JP 7317379A JP S55700 A JPS55700 A JP S55700A
Authority
JP
Japan
Prior art keywords
adaptive equalizer
training adaptive
training
equalizer
adaptive
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.)
Granted
Application number
JP7317379A
Other languages
English (en)
Other versions
JPS5924568B2 (ja
Inventor
Noeru Godaaru Dominiku
Emaniyueru Chirion Fuiritsupu
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS55700A publication Critical patent/JPS55700A/ja
Publication of JPS5924568B2 publication Critical patent/JPS5924568B2/ja
Expired 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • H04L25/0305—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using blind adaptation
    • 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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Networks Using Active Elements (AREA)
JP54073173A 1978-06-13 1979-06-12 適応等化器訓練装置 Expired JPS5924568B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7818478A FR2428946A1 (fr) 1978-06-13 1978-06-13 Procede et dispositif pour initialiser un egaliseur adaptatif a partir d'un signal de donnees inconnu dans un systeme de transmission utilisant la modulation d'amplitude en quadrature
FR000007818478 1978-06-13

Publications (2)

Publication Number Publication Date
JPS55700A true JPS55700A (en) 1980-01-07
JPS5924568B2 JPS5924568B2 (ja) 1984-06-11

Family

ID=9209763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54073173A Expired JPS5924568B2 (ja) 1978-06-13 1979-06-12 適応等化器訓練装置

Country Status (5)

Country Link
US (1) US4227152A (ja)
EP (1) EP0006121B1 (ja)
JP (1) JPS5924568B2 (ja)
DE (1) DE2967301D1 (ja)
FR (1) FR2428946A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678244A (en) * 1979-11-30 1981-06-27 Fujitsu Ltd Data training system
JPS5678243A (en) * 1979-11-30 1981-06-27 Fujitsu Ltd Data mode converging method
JPS57109434A (en) * 1980-12-26 1982-07-07 Nec Corp Automatic equalizer

Families Citing this family (66)

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US4247940A (en) * 1979-10-15 1981-01-27 Bell Telephone Laboratories, Incorporated Equalizer for complex data signals
WO1981001089A1 (en) * 1979-10-15 1981-04-16 Western Electric Co Control of coefficient drift for fractionally spaced equalizers
DE3173567D1 (de) * 1980-09-24 1986-03-06 Toshiba Kk Transversal equalizer
US4627077A (en) * 1983-09-20 1986-12-02 Paradyne Corporation Modified QAM data point constellation for secondary channel signalling
US4601044A (en) * 1983-11-04 1986-07-15 Racal Data Communications Inc. Carrier-phase adjustment using absolute phase detector
US4583236A (en) * 1983-11-04 1986-04-15 Racal Data Communications Inc. Modified absolute phase detector
US4630287A (en) * 1983-12-28 1986-12-16 Paradyne Corporation Secondary channel signalling in a QAM data point constellation
US4709374A (en) * 1984-07-05 1987-11-24 American Telephone And Telegraph Company Technique for decision-directed equalizer train/retrain
JPS6139633A (ja) * 1984-07-31 1986-02-25 Ricoh Co Ltd 等化システムの信号引込み方式
US4651320A (en) * 1984-12-24 1987-03-17 American Telephone And Telegraph Company Inband coding of secondary data
US4644537A (en) * 1984-12-24 1987-02-17 American Telephone And Telegraph Company Inband coding of secondary data
US4635276A (en) * 1985-07-25 1987-01-06 At&T Bell Laboratories Asynchronous and non-data decision directed equalizer adjustment
US4891806A (en) * 1987-09-18 1990-01-02 Racal Data Communications Inc. Constellation multiplexed inband secondary channel for voiceband modem
US4873683A (en) * 1987-12-04 1989-10-10 Motorola, Inc. TDMA radio system employing BPSK synchronization for QPSK signals subject to random phase variation and multipath fading
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
SE462942B (sv) * 1989-01-26 1990-09-17 Ericsson Telefon Ab L M Saett och anordning foer snabb frekvensstyrning av en koherent radiomottagare
SE462943B (sv) * 1989-01-26 1990-09-17 Ericsson Telefon Ab L M Saett och anordning foer frekvensstyrning av en koherent radiomottagare
FR2643765A1 (fr) * 1989-02-27 1990-08-31 Meuriche Bernard Dispositif de decomposition a cadence d'echantillonnage optimale d'un signal a bande passante en ses composantes sur deux porteuses en quadrature
JP2586169B2 (ja) * 1990-03-06 1997-02-26 日本電気株式会社 復調システム
DE69232530T2 (de) * 1991-03-27 2002-11-07 Matsushita Electric Industrial Co., Ltd. Signalübertragungssystem
US5600672A (en) 1991-03-27 1997-02-04 Matsushita Electric Industrial Co., Ltd. Communication system
USRE39890E1 (en) 1991-03-27 2007-10-23 Matsushita Electric Industrial Co., Ltd. Communication system
USRE42643E1 (en) 1991-03-27 2011-08-23 Panasonic Corporation Communication system
USRE40241E1 (en) 1991-03-27 2008-04-15 Matsushita Electric Industrial Co., Ltd. Communication system
AU655384B2 (en) * 1991-07-26 1994-12-15 General Instrument Corporation Carrier phase recovery for an adaptive equalizer
US5268930A (en) * 1991-12-19 1993-12-07 Novatel Communications Ltd. Decision feedback equalizer
US5892879A (en) 1992-03-26 1999-04-06 Matsushita Electric Industrial Co., Ltd. Communication system for plural data streams
US6724976B2 (en) 1992-03-26 2004-04-20 Matsushita Electric Industrial Co., Ltd. Communication system
US7158577B1 (en) 1992-03-26 2007-01-02 Matsushita Electric Industrial Co., Ltd. Communication system
US5802241A (en) 1992-03-26 1998-09-01 Matsushita Electric Industrial Co., Ltd. Communication system
US6728467B2 (en) * 1992-03-26 2004-04-27 Matsushita Electric Industrial Co., Ltd. Communication system
USRE38513E1 (en) 1992-03-26 2004-05-11 Matsushita Electric Industrial Co., Ltd. Communication system
US7894541B2 (en) * 1992-03-26 2011-02-22 Panasonic Corporation Communication system
CN1032099C (zh) * 1992-03-26 1996-06-19 松下电器产业株式会社 通信系统
DE69230969D1 (de) * 1992-07-10 2000-05-31 Ibm Verfahren und Einrichtung zur adaptiven Entzerrung
US5432818A (en) * 1993-02-16 1995-07-11 Lou; Yuang Method and apparatus of joint adaptive channel encoding, adaptive system filtering, and maximum likelihood sequence estimation process by means of an unknown data training
US5471508A (en) * 1993-08-20 1995-11-28 Hitachi America, Ltd. Carrier recovery system using acquisition and tracking modes and automatic carrier-to-noise estimation
US5835532A (en) * 1994-03-21 1998-11-10 Rca Thomson Licensing Corporation Blind equalizer for a vestigial sideband signal
US5754591A (en) * 1994-08-03 1998-05-19 Broadcom Corporation System for, and method of, processing quadrature amplitude modulated signals
EP0737394A1 (en) * 1994-10-21 1996-10-16 Koninklijke Philips Electronics N.V. A qam constellation which is robust in the presence of phase noise; encoder and decoder for this constellation
US5970093A (en) * 1996-01-23 1999-10-19 Tiernan Communications, Inc. Fractionally-spaced adaptively-equalized self-recovering digital receiver for amplitude-Phase modulated signals
US5940440A (en) * 1996-05-07 1999-08-17 Lucent Technologies Inc. Generalized multimodulus technique for blind equalization
US5793807A (en) * 1996-05-07 1998-08-11 Lucent Technologies Inc. Multimodulus blind eqalization using piecewise linear contours
US5712873A (en) * 1996-06-04 1998-01-27 Thomson Consumer Electronics, Inc. Multi-mode equalizer in a digital video signal processing system
US5835731A (en) * 1996-09-18 1998-11-10 Lucent Technologies Inc. Technique for improving the blind convergence of a two-filter adaptive equalizer
US5809074A (en) * 1996-11-08 1998-09-15 Lucent Technologies Inc. Technique for improving the blind convergence of an adaptive equalizer using a transition algorithm
US6069917A (en) * 1997-05-23 2000-05-30 Lucent Technologies Inc. Blind training of a decision feedback equalizer
US6304621B1 (en) * 1998-05-13 2001-10-16 Broadcom Corporation Multi-mode variable rate digital cable receiver
US6704317B1 (en) 1998-05-27 2004-03-09 3Com Corporation Multi-carrier LAN modem server
US6891887B1 (en) 1998-05-27 2005-05-10 3Com Corporation Multi-carrier LAN adapter device using interpolative equalizer
US6507585B1 (en) 1998-05-27 2003-01-14 3Com Corporation Multi-carrier LAN adapter device using frequency domain equalizer
US6603811B1 (en) 1998-05-29 2003-08-05 3Com Corporation Low complexity frequency domain equalizer having fast re-lock
US6377683B1 (en) 1998-05-29 2002-04-23 3Com Corporation Low complexity frequency domain echo canceller for DMT transceivers
US6259743B1 (en) * 1998-07-02 2001-07-10 Lucent Technologies Inc. Automatic constellation phase recovery in blind start-up of a dual mode CAP-QAM receiver
US6493381B1 (en) * 1999-06-24 2002-12-10 Agere Systems Inc. Blind equalization algorithm with the joint use of the constant R and the sliced symbols
US6490318B1 (en) * 1999-06-24 2002-12-03 Agere Systems Inc. Phase-compensating constant modulus algorithm
US7143013B2 (en) * 1999-11-04 2006-11-28 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
US7110923B2 (en) * 1999-11-04 2006-09-19 Verticalband, Limited Fast, blind equalization techniques using reliable symbols
US7085691B2 (en) * 1999-11-04 2006-08-01 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
FI108265B (fi) * 2000-02-21 2001-12-14 Tellabs Oy Menetelmä ja laitteisto adaptiivisen kanavakorjauksen opetusvaiheen toteuttamiseksi digitaalisella tietoliikenneyhteydellä
DE602005019549D1 (de) * 2004-03-31 2010-04-08 British Telecomm Tendegradierung
EP1592191B1 (en) * 2004-04-30 2007-06-06 Sony Deutschland GmbH Equalising structure and method with maximum likelihood detection
US20060251181A1 (en) * 2005-03-22 2006-11-09 Beceem Communications, Inc. Method and system for signal detection using a reduced transmitter constellation
CN107820532B (zh) * 2015-07-24 2021-06-11 哈利伯顿能源服务公司 泥浆脉冲遥测中的信道估计的方法及系统
US10790929B2 (en) * 2018-10-12 2020-09-29 Samsung Electronics Co., Ltd. Nested lookup table for symbol detection with initial candidate reduction
JP2020191578A (ja) * 2019-05-23 2020-11-26 日本電気株式会社 受信機、受信方法、及び、受信プログラム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978407A (en) * 1975-07-23 1976-08-31 Codex Corporation Fast start-up adaptive equalizer communication system using two data transmission rates
FR2335109A1 (fr) * 1975-12-09 1977-07-08 Ibm France Procede et dispositif de detection statistique de donnees
FR2358061A1 (fr) * 1976-07-08 1978-02-03 Ibm France Procede et dispositif d'egalisation utilisant la transformee de fourier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678244A (en) * 1979-11-30 1981-06-27 Fujitsu Ltd Data training system
JPS5678243A (en) * 1979-11-30 1981-06-27 Fujitsu Ltd Data mode converging method
JPS57109434A (en) * 1980-12-26 1982-07-07 Nec Corp Automatic equalizer

Also Published As

Publication number Publication date
EP0006121B1 (fr) 1984-11-21
EP0006121A1 (fr) 1980-01-09
DE2967301D1 (en) 1985-01-03
FR2428946B1 (ja) 1980-10-24
FR2428946A1 (fr) 1980-01-11
US4227152A (en) 1980-10-07
JPS5924568B2 (ja) 1984-06-11

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