CA2493106C - Method and apparatus for hybrid decision feedback equalization - Google Patents

Method and apparatus for hybrid decision feedback equalization Download PDF

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Publication number
CA2493106C
CA2493106C CA2493106A CA2493106A CA2493106C CA 2493106 C CA2493106 C CA 2493106C CA 2493106 A CA2493106 A CA 2493106A CA 2493106 A CA2493106 A CA 2493106A CA 2493106 C CA2493106 C CA 2493106C
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CA
Canada
Prior art keywords
filter
feedback
equalizer
slicer
coefficients
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
CA2493106A
Other languages
English (en)
French (fr)
Other versions
CA2493106A1 (en
Inventor
Srikant Jayaraman
Ivan Jesus Fernandez Corbaton
John E. Smee
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.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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
Priority claimed from US10/199,159 external-priority patent/US7046726B2/en
Priority claimed from US10/199,158 external-priority patent/US7035329B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CA2493106A1 publication Critical patent/CA2493106A1/en
Application granted granted Critical
Publication of CA2493106C publication Critical patent/CA2493106C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • 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
    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03254—Operation with other circuitry for removing intersymbol interference
    • H04L25/03267—Operation with other circuitry for removing intersymbol interference with decision feedback equalisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • 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
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03484—Tapped delay lines time-recursive
    • H04L2025/0349—Tapped delay lines time-recursive as a feedback filter
    • 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
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03484—Tapped delay lines time-recursive
    • H04L2025/03496—Tapped delay lines time-recursive as a prediction filter
    • 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Dc Digital Transmission (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Control Of Electric Motors In General (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Complex Calculations (AREA)
  • Networks Using Active Elements (AREA)
CA2493106A 2002-07-18 2003-07-18 Method and apparatus for hybrid decision feedback equalization Expired - Fee Related CA2493106C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US10/199,159 US7046726B2 (en) 2002-07-18 2002-07-18 Method and apparatus for hybrid decision feedback equalization
US10/199,159 2002-07-18
US10/199,158 US7035329B2 (en) 2002-07-18 2002-07-18 Soft slicer in a hybrid decision feedback equalizer
US10/199,158 2002-07-18
PCT/US2003/022594 WO2004010665A2 (en) 2002-07-18 2003-07-18 Method and apparatus for hybrid decision feedback equalization

Publications (2)

Publication Number Publication Date
CA2493106A1 CA2493106A1 (en) 2004-01-29
CA2493106C true CA2493106C (en) 2014-11-25

Family

ID=30772526

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2493106A Expired - Fee Related CA2493106C (en) 2002-07-18 2003-07-18 Method and apparatus for hybrid decision feedback equalization

Country Status (15)

Country Link
EP (5) EP2254293A3 (enExample)
JP (5) JP4373330B2 (enExample)
KR (1) KR101013628B1 (enExample)
CN (1) CN100583853C (enExample)
AT (3) ATE507639T1 (enExample)
AU (1) AU2003256623C1 (enExample)
BR (1) BRPI0312747B1 (enExample)
CA (1) CA2493106C (enExample)
DE (2) DE60336863D1 (enExample)
ES (1) ES2365730T3 (enExample)
IL (2) IL165868A0 (enExample)
MX (1) MXPA05000707A (enExample)
NO (1) NO20050863L (enExample)
RU (2) RU2328081C2 (enExample)
WO (1) WO2004010665A2 (enExample)

Cited By (1)

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CN112166558A (zh) * 2018-05-18 2021-01-01 麦克姆技术解决方案控股有限公司 限幅器的动态星座适应

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US7522663B2 (en) 2005-03-10 2009-04-21 Stmicroelectronics, Inc. Burst error limiting feedback equalizer system and method for multidimensional modulation systems
US8218615B2 (en) 2005-03-29 2012-07-10 Qualcomm Incorporated Method and apparatus for block-wise decision-feedback equalization for wireless communication
US8615035B2 (en) 2005-03-29 2013-12-24 Qualcomm Incorporated Method and apparatus for block-wise decision-feedback equalization for wireless communication
US8098722B2 (en) * 2005-03-29 2012-01-17 Qualcomm Incorporated Method and apparatus for equalization control
CN1845539B (zh) * 2005-04-08 2010-12-29 上海奇普科技有限公司 一种具有重叠结构的时域自适应均衡器
DE602005017765D1 (de) * 2005-08-02 2009-12-31 Alcatel Lucent Empfänger eines optischen Signals
US7590197B2 (en) 2005-12-20 2009-09-15 Research In Motion Limited Correction circuit for improving performance in a channel decoder
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US7826523B2 (en) * 2006-03-31 2010-11-02 Intel Corporation Effective adaptive filtering techniques
US8116364B2 (en) * 2007-04-18 2012-02-14 Mediatek Inc. Selective slicing equalizer
RU2405274C1 (ru) * 2009-04-01 2010-11-27 Открытое акционерное общество "Концерн "Созвездие" Последовательный модем с комбинированной обратной связью
KR101096769B1 (ko) 2009-12-31 2011-12-21 한국산업기술대학교산학협력단 Ｄｔｖ 방송 시스템 환경에서 동일 채널 중계기를 위한 다중 레벨 상관 ｌｍｓ 기반의 채널 등화 방법 및 장치
RU2465725C1 (ru) * 2011-04-21 2012-10-27 Открытое акционерное общество "Концерн "Созвездие" Широкополосная система радиосвязи кв диапазона
US8913901B2 (en) * 2012-02-20 2014-12-16 Tyco Electronics Subsea Communications Llc System and method for blind equalization and carrier phase recovery in a quadrature amplitude modulated system
GB2503073B (en) * 2013-03-27 2014-04-23 Imagination Tech Ltd Efficient tracking of decision-feedback equaliser coefficients
RU2558609C2 (ru) * 2013-06-18 2015-08-10 Федеральное государственное бюджетное учреждение науки Научно-исследовательский институт системных исследований Российской академии наук (НИИСИ РАН) Передатчик со следящей обратной связью
WO2014209326A1 (en) * 2013-06-27 2014-12-31 Intel Corporation Low power equalizer and its training
DE102014201233B4 (de) * 2014-01-23 2023-12-14 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Entzerrungsfilter
US9768913B1 (en) * 2016-03-09 2017-09-19 Samsung Electronics Co., Ltd System and method for multiple input multiple output (MIMO) detection with soft slicer
CN108111182A (zh) * 2016-11-25 2018-06-01 晨星半导体股份有限公司 错误限制方法、错误限制器以及数字接收电路
US10135645B1 (en) * 2017-10-18 2018-11-20 Cisco Technology, Inc. Equalizer optimization for FEC-protected communication links
DE102018208210A1 (de) * 2018-05-24 2019-11-28 Siemens Aktiengesellschaft Einrichtung und Verfahren zum Ermitteln eines Zeitversatzes zwischen zwei Zeitbasen
KR102192377B1 (ko) * 2018-12-05 2020-12-18 서울여자대학교 산학협력단 두개악안면영상에서의 자동 치아 분리방법 및 시스템
CN110138696A (zh) * 2019-05-28 2019-08-16 科大讯飞股份有限公司 信道均衡方法及装置
CN111131101B (zh) * 2019-12-28 2022-02-08 芯动微电子科技(珠海)有限公司 一种反馈均衡电路
CN116187064B (zh) * 2023-02-14 2024-03-12 中国科学院国家空间科学中心 一种连续信号时间序列二阶导数的数值仿真方法

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US5493454A (en) * 1994-10-04 1996-02-20 Quantum Corporation Write precompensation optimization in a PRML channel using a selected PRML signal level
US5513216A (en) * 1994-10-13 1996-04-30 At&T Corp. Hybrid equalizer arrangement for use in data communications equipment
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112166558A (zh) * 2018-05-18 2021-01-01 麦克姆技术解决方案控股有限公司 限幅器的动态星座适应

Also Published As

Publication number Publication date
EP2254295B1 (en) 2011-10-05
ATE506792T1 (de) 2011-05-15
JP2005533457A (ja) 2005-11-04
ATE507639T1 (de) 2011-05-15
EP2254293A2 (en) 2010-11-24
JP2013243680A (ja) 2013-12-05
JP2009268120A (ja) 2009-11-12
KR101013628B1 (ko) 2011-02-10
EP1525727A2 (en) 2005-04-27
EP2254295A1 (en) 2010-11-24
WO2004010665A3 (en) 2004-06-17
IL165868A0 (en) 2006-01-15
RU2005120491A (ru) 2007-01-20
EP1525727B1 (en) 2011-04-27
JP5855716B2 (ja) 2016-02-09
JP2012029305A (ja) 2012-02-09
IL202168A (en) 2010-12-30
EP2254293A3 (en) 2010-12-08
JP5694444B2 (ja) 2015-04-01
EP1956783A1 (en) 2008-08-13
EP2254294A2 (en) 2010-11-24
JP4902696B2 (ja) 2012-03-21
AU2003256623A1 (en) 2004-02-09
RU2407197C2 (ru) 2010-12-20
AU2003256623C1 (en) 2009-05-28
EP2254294A3 (en) 2010-12-08
JP5405541B2 (ja) 2014-02-05
RU2328081C2 (ru) 2008-06-27
JP2015008491A (ja) 2015-01-15
DE60336903D1 (de) 2011-06-09
NO20050863L (no) 2005-02-17
RU2005104433A (ru) 2005-09-20
EP1956783B1 (en) 2011-04-20
CN1669282A (zh) 2005-09-14
AU2003256623B2 (en) 2008-12-04
JP4373330B2 (ja) 2009-11-25
BR0312747A (pt) 2007-06-26
BRPI0312747B1 (pt) 2016-11-22
CA2493106A1 (en) 2004-01-29
DE60336863D1 (de) 2011-06-01
CN100583853C (zh) 2010-01-20
WO2004010665A2 (en) 2004-01-29
ATE527792T1 (de) 2011-10-15
MXPA05000707A (es) 2005-04-08
KR20050019861A (ko) 2005-03-03
ES2365730T3 (es) 2011-10-10

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Effective date: 20200831