DE69923874D1 - Adaptive Schrittweite für Kanalschätzung - Google Patents

Adaptive Schrittweite für Kanalschätzung

Info

Publication number
DE69923874D1
DE69923874D1 DE69923874T DE69923874T DE69923874D1 DE 69923874 D1 DE69923874 D1 DE 69923874D1 DE 69923874 T DE69923874 T DE 69923874T DE 69923874 T DE69923874 T DE 69923874T DE 69923874 D1 DE69923874 D1 DE 69923874D1
Authority
DE
Germany
Prior art keywords
channel estimation
step size
adaptive step
adaptive
size
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
DE69923874T
Other languages
English (en)
Other versions
DE69923874T2 (de
Inventor
Koizumi Fumiaki
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69923874D1 publication Critical patent/DE69923874D1/de
Publication of DE69923874T2 publication Critical patent/DE69923874T2/de
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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/025—Channel estimation channel estimation algorithms using least-mean-square [LMS] method

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Error Detection And Correction (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
DE69923874T 1998-03-13 1999-03-10 Adaptive Schrittweite für Kanalschätzung Expired - Fee Related DE69923874T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP06317098A JP3230482B2 (ja) 1998-03-13 1998-03-13 適応等化器
JP6317098 1998-03-13

Publications (2)

Publication Number Publication Date
DE69923874D1 true DE69923874D1 (de) 2005-04-07
DE69923874T2 DE69923874T2 (de) 2005-07-21

Family

ID=13221524

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69923874T Expired - Fee Related DE69923874T2 (de) 1998-03-13 1999-03-10 Adaptive Schrittweite für Kanalschätzung

Country Status (6)

Country Link
US (1) US6504868B1 (de)
EP (1) EP0942561B1 (de)
JP (1) JP3230482B2 (de)
CN (1) CN1115027C (de)
AU (1) AU770349B2 (de)
DE (1) DE69923874T2 (de)

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JPH06508805A (ja) * 1991-08-05 1994-10-06 ザ、ブロクター、エンド、ギャンブル、カンパニー 差込み式ハンドル
JP3132448B2 (ja) * 1997-12-19 2001-02-05 日本電気株式会社 適応等化器タップ係数のトレーニング方法およびトレーニング回路
GB9821385D0 (en) * 1998-10-01 1998-11-25 British Broadcasting Corp Improvements relating to measuring channel state from a received signal and discriminating digital values from a received signal,suitable for use in cofdm
EP1128618A3 (de) * 2000-02-28 2004-08-25 Lucent Technologies Inc. Verfahren zur Nachführung einer zeitvarianter Kanalimpulsantwort
FR2805689B1 (fr) * 2000-02-29 2003-07-04 Thomson Csf Procede et dispositif d'estimation d'un canal de propagation
WO2001099329A1 (en) * 2000-06-20 2001-12-27 Nokia Corporation Error estimation method and apparatus
IL141740A (en) * 2001-03-01 2005-12-18 Eci Telecom Ltd Method and system for handling optical signals
US7395493B2 (en) * 2002-06-04 2008-07-01 Lucent Technologies Inc. Systems and methods for adaptively decoding transmitted frames
US7515629B2 (en) * 2002-07-22 2009-04-07 Broadcom Corporation Conditioning circuit that spectrally shapes a serviced bit stream
US20050111593A1 (en) * 2002-08-30 2005-05-26 Fujitsu Limited Decoding apparatus
US20040114681A1 (en) * 2002-12-17 2004-06-17 Ron Rotstein Method for improving performance of wireless systems at high speeds
JP4554972B2 (ja) * 2003-04-11 2010-09-29 日本電気株式会社 光学情報媒体の再生信号等化方法及び光学情報記録再生装置
US20040268190A1 (en) * 2003-05-19 2004-12-30 International Business Machines Corporation Adjusting parameters of a serial link
JP4269858B2 (ja) * 2003-09-10 2009-05-27 株式会社日立製作所 適応変復調方式及び無線通信システム
JP2008507860A (ja) * 2004-05-12 2008-03-13 トムソン ライセンシング ノイズ強度推定に基づく等化器ロック検出器
WO2005114933A1 (en) * 2004-05-12 2005-12-01 Thomson Licensing Constellation location dependent step sizes for equalizer error signals
WO2006002150A1 (en) * 2004-06-22 2006-01-05 Applied Materials Israel, Ltd. Wafer inspection system
JP4189389B2 (ja) * 2005-04-06 2008-12-03 パナソニック株式会社 等化装置および等化方法
US7489944B2 (en) * 2005-06-01 2009-02-10 Alcatel-Lucent Usa Inc. Method of allocating power over channels of a communication system
US7620076B2 (en) * 2005-08-23 2009-11-17 Meshnetworks, Inc. System and method for variably inserting training symbols into transmissions by estimating the channel coherence time in a wireless communication network
US20070201545A1 (en) * 2006-01-03 2007-08-30 Zamir Eliyahu D Equalizer gain control system and method
US7760821B2 (en) * 2006-11-13 2010-07-20 International Business Machines Corporation Oversampled channel response identification
US7561358B2 (en) * 2006-11-16 2009-07-14 Samsung Electronics Co., Ltd. Multi-register read channel optimization
KR101597090B1 (ko) 2008-06-19 2016-02-24 삼성전자주식회사 이동통신 시스템의 수신 장치 및 방법
JP5232677B2 (ja) * 2009-02-02 2013-07-10 日本放送協会 デジタル伝送方式の復号器及び受信装置
CN102684781B (zh) 2012-04-17 2015-07-08 华为技术有限公司 光模块性能优化的方法和装置
CN110830399B (zh) * 2018-08-10 2022-04-15 扬智科技股份有限公司 信号接收装置与其均衡器调校方法
JP7252447B2 (ja) * 2019-05-08 2023-04-05 日本電信電話株式会社 シンボル判定装置、及びシンボル判定方法
CN112769720B (zh) * 2020-12-31 2022-08-16 京信网络系统股份有限公司 信道均衡的方法、装置、计算机设备和介质

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NL7905577A (nl) 1979-07-18 1981-01-20 Philips Nv Inrichting met een niet-recursieffilter.
US4361892A (en) * 1980-11-03 1982-11-30 Bell Telephone Laboratories, Incorporated Adaptive equalizer
US4791390A (en) 1982-07-01 1988-12-13 Sperry Corporation MSE variable step adaptive filter
JPS63228817A (ja) 1987-03-18 1988-09-22 Fujitsu Ltd 適応デジタルフイルタ
JPS6462033A (en) 1987-09-02 1989-03-08 Canon Kk Automatic equalizer
GB2214386A (en) * 1988-01-08 1989-08-31 Philips Electronic Associated Signal equaliser
JPH01194614A (ja) 1988-01-29 1989-08-04 Canon Inc 自動等化器
JPH05316083A (ja) 1991-04-08 1993-11-26 Nippon Telegr & Teleph Corp <Ntt> 移動無線において変動する伝送路における等化方法及び適応等化器
JP2986261B2 (ja) 1991-10-14 1999-12-06 沖電気工業株式会社 適応最尤系列推定器
JP3237865B2 (ja) 1991-06-25 2001-12-10 沖電気工業株式会社 最尤系列推定器
JP2973656B2 (ja) 1991-07-30 1999-11-08 日本電気株式会社 適応フィルタによる未知システム同定の方法及び装置
JPH0563605A (ja) 1991-08-30 1993-03-12 Nec Corp 適応型最尤系列推定受信器
JPH05175783A (ja) 1991-12-25 1993-07-13 Matsushita Electric Ind Co Ltd 自動等化器
JPH05343948A (ja) 1992-06-12 1993-12-24 Matsushita Electric Ind Co Ltd 自動等化器
US5818876A (en) * 1993-02-01 1998-10-06 Motorola, Inc. Method and apparatus of adaptive maximum likelihood sequence estimation using a variable convergence step size
WO1995015034A1 (fr) * 1993-11-29 1995-06-01 Oki Electric Industry Co., Ltd. Dispositif d'estimation d'une valeur d'evaluation molle et dispositif d'estimation d'un systeme de vraisemblance maximale
WO1995017052A1 (fr) * 1993-12-15 1995-06-22 Ntt Mobile Communications Network Inc. Egaliseur a adaptation automatique
JP3068996B2 (ja) 1993-12-21 2000-07-24 真作 森 適応フィルタ装置及びそのステップゲインの発生方法
JPH07261772A (ja) 1994-03-17 1995-10-13 Hitachi Ltd 能動型消音装置
US5648987A (en) * 1994-03-24 1997-07-15 Samsung Electronics Co., Ltd. Rapid-update adaptive channel-equalization filtering for digital radio receivers, such as HDTV receivers
JPH0832491A (ja) 1994-07-21 1996-02-02 Nec Eng Ltd 自動等化器
JPH08125587A (ja) 1994-10-26 1996-05-17 Matsushita Electric Ind Co Ltd 適応ディジタル信号処理装置
JPH08307283A (ja) * 1995-03-09 1996-11-22 Oki Electric Ind Co Ltd 最尤系列推定器及び最尤系列推定方法
US6215818B1 (en) * 1998-04-29 2001-04-10 Nortel Networks Limited Method and apparatus for operating an adaptive decision feedback equalizer

Also Published As

Publication number Publication date
AU2039299A (en) 1999-09-23
JPH11261452A (ja) 1999-09-24
AU770349B2 (en) 2004-02-19
JP3230482B2 (ja) 2001-11-19
EP0942561A2 (de) 1999-09-15
CN1115027C (zh) 2003-07-16
US6504868B1 (en) 2003-01-07
EP0942561B1 (de) 2005-03-02
DE69923874T2 (de) 2005-07-21
EP0942561A3 (de) 2002-07-03
CN1235457A (zh) 1999-11-17

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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