DE69923874D1 - Adaptive Schrittweite für Kanalschätzung - Google Patents
Adaptive Schrittweite für KanalschätzungInfo
- 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
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)
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) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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***股份有限公司 | 信道均衡的方法、装置、计算机设备和介质 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1998
- 1998-03-13 JP JP06317098A patent/JP3230482B2/ja not_active Expired - Fee Related
-
1999
- 1999-03-10 EP EP99103973A patent/EP0942561B1/de not_active Expired - Lifetime
- 1999-03-10 DE DE69923874T patent/DE69923874T2/de not_active Expired - Fee Related
- 1999-03-11 US US09/266,607 patent/US6504868B1/en not_active Expired - Fee Related
- 1999-03-12 CN CN99105591.8A patent/CN1115027C/zh not_active Expired - Fee Related
- 1999-03-12 AU AU20392/99A patent/AU770349B2/en not_active Ceased
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 |