CN1202653C - 自适应稀疏均衡器滤波器系统和为其分派接头位置的方法 - Google Patents

自适应稀疏均衡器滤波器系统和为其分派接头位置的方法 Download PDF

Info

Publication number
CN1202653C
CN1202653C CNB971998531A CN97199853A CN1202653C CN 1202653 C CN1202653 C CN 1202653C CN B971998531 A CNB971998531 A CN B971998531A CN 97199853 A CN97199853 A CN 97199853A CN 1202653 C CN1202653 C CN 1202653C
Authority
CN
China
Prior art keywords
filter
joint location
multiplier
joint
cycle
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
CNB971998531A
Other languages
English (en)
Chinese (zh)
Other versions
CN1238095A (zh
Inventor
C·Y·鲁
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 CN1238095A publication Critical patent/CN1238095A/zh
Application granted granted Critical
Publication of CN1202653C publication Critical patent/CN1202653C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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)
CNB971998531A 1996-11-19 1997-10-29 自适应稀疏均衡器滤波器系统和为其分派接头位置的方法 Expired - Fee Related CN1202653C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/752,295 1996-11-19
US08/752,295 US5777910A (en) 1996-11-19 1996-11-19 Sparse equalization filter adaptive in two dimensions

Publications (2)

Publication Number Publication Date
CN1238095A CN1238095A (zh) 1999-12-08
CN1202653C true CN1202653C (zh) 2005-05-18

Family

ID=25025696

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB971998531A Expired - Fee Related CN1202653C (zh) 1996-11-19 1997-10-29 自适应稀疏均衡器滤波器系统和为其分派接头位置的方法

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)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5946351A (en) * 1996-12-27 1999-08-31 At&T Corporation Tap selectable decision feedback equalizer
JP3204151B2 (ja) * 1997-02-13 2001-09-04 日本電気株式会社 適応フィルタ
US6240180B1 (en) * 1997-11-14 2001-05-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having split adaptive gain settings
US6031908A (en) * 1997-11-14 2000-02-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having variable 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
US7248630B2 (en) * 2001-11-21 2007-07-24 Koninklijke Philips Electronics N. V. Adaptive equalizer operating at a sampling rate asynchronous to the data rate
US7953193B2 (en) * 2002-03-28 2011-05-31 Broadcom Corporation Sparse channel equalization
US20050218973A1 (en) * 2002-05-31 2005-10-06 Mirsad Halimic 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
JP2007528670A (ja) * 2004-03-09 2007-10-11 トムソン ライセンシング スペクトラム拡散システム用のハイブリッド型ｒａｋｅ／等化受信機
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
TW201015928A (en) * 2005-11-21 2010-04-16 Qualcomm Inc Optimal weights for MMSE space-time equalizer of multicode CDMA system
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
CN101490972A (zh) * 2006-11-22 2009-07-22 松下电器产业株式会社 波形均衡装置
JP4953856B2 (ja) * 2007-02-28 2012-06-13 日本電信電話株式会社 等化回路
US8121236B1 (en) 2007-10-12 2012-02-21 Harris Corporation Communications system using adaptive filter circuit using parallel adaptive filters
US8204164B1 (en) 2007-10-12 2012-06-19 Harris Corporation Communications system using adaptive filter and selected adaptive filter taps
US8107572B1 (en) 2007-10-12 2012-01-31 Harris Corporation Communications system using adaptive filter for interference reduction
US7860200B2 (en) * 2007-10-12 2010-12-28 Harris Corporation Communications system using adaptive filter that is selected based on output power
US8098781B1 (en) 2007-10-12 2012-01-17 Harris Corporation Communications system using adaptive filter with normalization circuit
US7864835B2 (en) * 2007-10-12 2011-01-04 Harris Corporation Communications system using adaptive filter and variable delay before adaptive filter taps
US8094763B1 (en) 2007-10-12 2012-01-10 Harris Corporation Communications system using adaptive filter with adaptive update gain
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
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
US10572985B2 (en) * 2016-11-18 2020-02-25 Canon Kabushiki Kaisha Image processing circuit with multipliers allocated based on filter coefficients
WO2023151810A1 (en) * 2022-02-11 2023-08-17 Huawei Technologies Co., Ltd. Techniques for power efficient and smart echo cancellation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5050119A (en) * 1989-10-06 1991-09-17 North American Philips Corporation Optimized sparse transversal filter
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
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
KR20000053361A (ko) 2000-08-25
US5777910A (en) 1998-07-07
EP0940035A1 (en) 1999-09-08
AU7304898A (en) 1998-06-10
DE69737416D1 (de) 2007-04-12
DE69737416T2 (de) 2007-06-21
EP0940035B1 (en) 2007-02-28
JP2001508959A (ja) 2001-07-03
MY117012A (en) 2004-04-30
CN1238095A (zh) 1999-12-08
KR100529245B1 (ko) 2005-11-17
WO1998023086A1 (en) 1998-05-28

Similar Documents

Publication Publication Date Title
CN1238095A (zh) 自适应稀疏均衡器滤波器
JP2695541B2 (ja) テレビジョン信号処理装置および方法
EP0516216A2 (en) Echo cancellation system
CN1102026A (zh) 可重组的可编程数字滤波器结构
CA2058495A1 (en) Adaptive filter capable of quickly identifying an unknown system
US5111298A (en) Method and apparatus for communication channel identification and signal restoration
CA1084156A (en) Automatic channel equalization with time base expansion
GB2039195A (en) Digital signal processing method and apparatus
US4314277A (en) Input-weighted transversal filter TV ghost eliminator
EP0688099B1 (en) Adaptive filter capable of removing a residual echo at a rapid speed
JPH07147646A (ja) ビデオ信号エコーを抑圧する適応方法及びテレビジョン等化器
US4825440A (en) Signal error concealment circuit and method
JP3083545B2 (ja) 適合型フィルタ回路
CN1114313C (zh) 除去调制/解调接收器中的同信道干扰的装置和方法
US5224123A (en) Transversal equalizer
CN1845539A (zh) 一种具有重叠结构的时域自适应均衡器
CA2051858C (en) Digital filter
MXPA99004654A (en) Adaptive sparse equalization filter
US4458269A (en) Sampling arrangement for a television ghost signal cancellation system
CN1059993C (zh) 有限脉冲响应自适应数字滤波器的波带系数更新装置
WO1995003671A1 (en) Ghost signal cancellation system for television signals
JP3102726B2 (ja) 信号分散消去装置および方法
JP2700335B2 (ja) ゴースト除去装置
Murata et al. Practical TV Ghost Canceller Using 2-Stage CCD Transversal Filter
EP0253583A2 (en) Adaptive digital filter

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee