DE69737416T2 - Adaptiver verteilter entzerrerfilter - Google Patents

Adaptiver verteilter entzerrerfilter Download PDF

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Publication number
DE69737416T2
DE69737416T2 DE69737416T DE69737416T DE69737416T2 DE 69737416 T2 DE69737416 T2 DE 69737416T2 DE 69737416 T DE69737416 T DE 69737416T DE 69737416 T DE69737416 T DE 69737416T DE 69737416 T2 DE69737416 T2 DE 69737416T2
Authority
DE
Germany
Prior art keywords
filter
multipliers
tap
input
assigned
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
DE69737416T
Other languages
German (de)
English (en)
Other versions
DE69737416D1 (de
Inventor
Cheng-Youn Cresskill LU
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.)
Vantiva SA
Original Assignee
Thomson Multimedia SA
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 Thomson Multimedia SA filed Critical Thomson Multimedia SA
Publication of DE69737416D1 publication Critical patent/DE69737416D1/de
Application granted granted Critical
Publication of DE69737416T2 publication Critical patent/DE69737416T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • 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
    • 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
    • H04L25/03987—Equalisation for sparse channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Picture Signal Circuits (AREA)
  • Dc Digital Transmission (AREA)
DE69737416T 1996-11-19 1997-10-29 Adaptiver verteilter entzerrerfilter Expired - Fee Related DE69737416T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US752295 1996-11-19
US08/752,295 US5777910A (en) 1996-11-19 1996-11-19 Sparse equalization filter adaptive in two dimensions
PCT/US1997/018473 WO1998023086A1 (en) 1996-11-19 1997-10-29 Adaptive sparse equalization filter

Publications (2)

Publication Number Publication Date
DE69737416D1 DE69737416D1 (de) 2007-04-12
DE69737416T2 true DE69737416T2 (de) 2007-06-21

Family

ID=25025696

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69737416T Expired - Fee Related DE69737416T2 (de) 1996-11-19 1997-10-29 Adaptiver verteilter entzerrerfilter

Country Status (9)

Country Link
US (1) US5777910A (enExample)
EP (1) EP0940035B1 (enExample)
JP (1) JP2001508959A (enExample)
KR (1) KR100529245B1 (enExample)
CN (1) CN1202653C (enExample)
AU (1) AU7304898A (enExample)
DE (1) DE69737416T2 (enExample)
MY (1) MY117012A (enExample)
WO (1) WO1998023086A1 (enExample)

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US6240180B1 (en) * 1997-11-14 2001-05-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having split adaptive gain settings
US6426972B1 (en) * 1998-06-19 2002-07-30 Nxtwave Communications Reduced complexity equalizer for multi mode signaling
US6724844B1 (en) * 1998-06-30 2004-04-20 Koninklijke Philips Electronics N.V. Method and device for improving DFE performance in a trellis-coded system
US6377642B1 (en) 1999-02-26 2002-04-23 Cisco Technologies, Inc. System for clock recovery
US6636561B1 (en) * 1999-06-29 2003-10-21 Nortel Networks Limited Channel equalisers
US6445734B1 (en) * 1999-06-30 2002-09-03 Conexant Systems, Inc. System and method of validating equalizer training
US7489725B2 (en) * 1999-08-13 2009-02-10 Broadcom Corporation Decision feedback equalizer and precoder ramping circuit
US7127481B1 (en) 2000-07-11 2006-10-24 Marvell International, Ltd. Movable tap finite impulse response filter
US7120656B1 (en) 2000-10-04 2006-10-10 Marvell International Ltd. Movable tap finite impulse response filter
US6980646B1 (en) * 2001-10-12 2005-12-27 Nortel Networks Limited Apparatus and method for echo cancellation
KR100925672B1 (ko) * 2001-11-21 2009-11-10 코닌클리케 필립스 일렉트로닉스 엔.브이. 데이터 전송속도에 비동기적인 샘플링속도에서 동작하는적응형 등화기
US7953193B2 (en) * 2002-03-28 2011-05-31 Broadcom Corporation Sparse channel equalization
WO2003103170A2 (en) * 2002-05-31 2003-12-11 Matsushita Electric Industrial Co., Ltd. Bandwidth adaptation rule for adaptive noise filter for inverse filtering with improved disturbance rejection bandwidth and speed
US7069286B2 (en) * 2002-09-27 2006-06-27 Lucent Technologies Inc. Solution space principle component-based adaptive filter and method of operation thereof
KR100921479B1 (ko) * 2002-10-31 2009-10-13 엘지전자 주식회사 채널 등화기 및 이를 이용한 채널 등화 방법
KR100498465B1 (ko) * 2002-11-23 2005-07-01 삼성전자주식회사 채널 등화 방법 및 채널 등화기
US7693210B2 (en) * 2004-03-09 2010-04-06 Thomson Licensing Hybrid rake/equalizer receiver for spread spectrum systems
US7574010B2 (en) 2004-05-28 2009-08-11 Research In Motion Limited System and method for adjusting an audio signal
KR100660841B1 (ko) * 2004-10-22 2006-12-26 삼성전자주식회사 오버랩된 필터 뱅크들을 가지는 부분 탭 적응 등화기 및이를 이용한 등화 방법
KR100640591B1 (ko) * 2004-10-23 2006-11-01 삼성전자주식회사 감소된 면적을 가지는 부분 탭 적응 등화기
US7613291B1 (en) * 2005-08-10 2009-11-03 Mindspeed Technologies, Inc. Echo path change detection using dual sparse filtering
CN101310450B (zh) * 2005-11-21 2016-03-09 高通股份有限公司 用于多码cdma系统的mmse空时均衡器的最优权重
US7649932B2 (en) * 2005-11-30 2010-01-19 Microtune (Texas), L.P. Segmented equalizer
JP4527079B2 (ja) * 2006-04-28 2010-08-18 三菱電機株式会社 等化装置
US20070280388A1 (en) * 2006-05-31 2007-12-06 Texas Instruments Incorporated Apparatus for and method of canceller tap shutdown in a communication system
WO2008062622A1 (en) * 2006-11-22 2008-05-29 Panasonic Corporation Waveform equalizing device
JP4953856B2 (ja) * 2007-02-28 2012-06-13 日本電信電話株式会社 等化回路
US7864835B2 (en) * 2007-10-12 2011-01-04 Harris Corporation Communications system using adaptive filter and variable delay before adaptive filter taps
US8098781B1 (en) 2007-10-12 2012-01-17 Harris Corporation Communications system using adaptive filter with normalization circuit
US7860200B2 (en) * 2007-10-12 2010-12-28 Harris Corporation Communications system using adaptive filter that is selected based on output power
US8094763B1 (en) 2007-10-12 2012-01-10 Harris Corporation Communications system using adaptive filter with adaptive update gain
US8121236B1 (en) 2007-10-12 2012-02-21 Harris Corporation Communications system using adaptive filter circuit using parallel adaptive filters
US8107572B1 (en) 2007-10-12 2012-01-31 Harris Corporation Communications system using adaptive filter for interference reduction
US8204164B1 (en) 2007-10-12 2012-06-19 Harris Corporation Communications system using adaptive filter and selected adaptive filter taps
US7978757B1 (en) * 2008-02-08 2011-07-12 Freescale Semiconductor, Inc. Configurable receiver and a method for configuring a receiver
US8081722B1 (en) 2008-04-04 2011-12-20 Harris Corporation Communications system and device using simultaneous wideband and in-band narrowband operation and related method
US8526486B2 (en) * 2008-11-12 2013-09-03 Intel Corporation Decision feedback equalizer for portable environments
US8275028B2 (en) * 2009-06-30 2012-09-25 Intel Corporation Advanced television systems committee (ATSC) digital television (DTV) receiver
CN101834582B (zh) * 2010-05-28 2013-09-11 华为技术有限公司 一种优化fir滤波器的方法及装置
US8968293B2 (en) * 2011-04-12 2015-03-03 Covidien Lp Systems and methods for calibrating power measurements in an electrosurgical generator
CN105007057B (zh) * 2015-07-09 2018-08-24 杭州电子科技大学 一种针对有限集跟踪滤波器的均匀密集杂波稀疏方法
US10572985B2 (en) * 2016-11-18 2020-02-25 Canon Kabushiki Kaisha Image processing circuit with multipliers allocated based on filter coefficients
EP3324543B1 (en) * 2016-11-18 2020-01-08 Nxp B.V. Adaptive filter and method of operating an adaptive filter
EP3324542B1 (en) 2016-11-18 2019-10-23 Nxp B.V. Adaptive filter with manageable resource sharing
WO2023151810A1 (en) * 2022-02-11 2023-08-17 Huawei Technologies Co., Ltd. Techniques for power efficient and smart echo cancellation

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US4727424A (en) * 1986-10-16 1988-02-23 Rca Corporation Sampled data filtering system, including a crossbar switch matrix, as for a ghost cancellation system
US5001701A (en) * 1989-08-07 1991-03-19 At&T Bell Laboratories Subband echo canceler including real time allocation among the subbands
EP0421526B1 (en) * 1989-10-06 1996-07-31 Koninklijke Philips Electronics N.V. Adaptive ghost cancellation circuit
US5045945A (en) * 1989-10-06 1991-09-03 North American Philips Corporation Method of adaptive ghost cancellation
US5050119A (en) * 1989-10-06 1991-09-17 North American Philips Corporation Optimized sparse transversal filter
EP0492647B1 (en) * 1990-12-27 1997-04-23 Nec Corporation Adaptive filter capable of quickly identifying an unknown system
CA2060667C (en) * 1992-02-05 1998-12-08 Paul Marc Yatrou Adaptive sparse echo canceller using a sub-rate filter for active tap selection
KR0124597B1 (ko) * 1994-04-12 1997-12-01 구자홍 에이치디티브이(hdtv)용 채널등화기
KR960011419B1 (ko) * 1994-06-14 1996-08-22 대우전자 주식회사 복소 필터 장치

Also Published As

Publication number Publication date
WO1998023086A1 (en) 1998-05-28
DE69737416D1 (de) 2007-04-12
CN1202653C (zh) 2005-05-18
EP0940035B1 (en) 2007-02-28
US5777910A (en) 1998-07-07
KR100529245B1 (ko) 2005-11-17
AU7304898A (en) 1998-06-10
MY117012A (en) 2004-04-30
KR20000053361A (ko) 2000-08-25
EP0940035A1 (en) 1999-09-08
JP2001508959A (ja) 2001-07-03
CN1238095A (zh) 1999-12-08

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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