KR100529245B1 - 적응 스파스 등화 필터 시스템 및 이 필터 시스템에서의 탭 위치 할당 방법 - Google Patents

적응 스파스 등화 필터 시스템 및 이 필터 시스템에서의 탭 위치 할당 방법 Download PDF

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Publication number
KR100529245B1
KR100529245B1 KR10-1999-7004390A KR19997004390A KR100529245B1 KR 100529245 B1 KR100529245 B1 KR 100529245B1 KR 19997004390 A KR19997004390 A KR 19997004390A KR 100529245 B1 KR100529245 B1 KR 100529245B1
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South Korea
Prior art keywords
tap
filter
assigned
multiplier
tap position
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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
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KR10-1999-7004390A
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English (en)
Korean (ko)
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KR20000053361A (ko
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류창윤
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톰슨 멀티미디어
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Publication of KR20000053361A publication Critical patent/KR20000053361A/ko
Application granted granted Critical
Publication of KR100529245B1 publication Critical patent/KR100529245B1/ko
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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)
KR10-1999-7004390A 1996-11-19 1997-10-29 적응 스파스 등화 필터 시스템 및 이 필터 시스템에서의 탭 위치 할당 방법 Expired - Fee Related KR100529245B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/752,295 US5777910A (en) 1996-11-19 1996-11-19 Sparse equalization filter adaptive in two dimensions
US08/752,295 1996-11-19
US8/752,295 1996-11-19

Publications (2)

Publication Number Publication Date
KR20000053361A KR20000053361A (ko) 2000-08-25
KR100529245B1 true KR100529245B1 (ko) 2005-11-17

Family

ID=25025696

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-1999-7004390A Expired - Fee Related KR100529245B1 (ko) 1996-11-19 1997-10-29 적응 스파스 등화 필터 시스템 및 이 필터 시스템에서의 탭 위치 할당 방법

Country Status (9)

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

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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
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
CN1656699A (zh) * 2002-05-31 2005-08-17 松下电器产业株式会社 具有改进的干扰抑制带宽和速度的反相滤波的自适应噪声滤波器的带宽自适应规则
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
KR101019397B1 (ko) * 2005-11-21 2011-03-07 퀄컴 인코포레이티드 멀티코드 ｃｄｍａ 시스템의 ｍｍｓｅ 공간-시간 등화기에대한 최적의 가중치
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
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
US8094763B1 (en) 2007-10-12 2012-01-10 Harris Corporation Communications system using adaptive filter with adaptive update gain
US8204164B1 (en) 2007-10-12 2012-06-19 Harris Corporation Communications system using adaptive filter and selected adaptive filter taps
US7860200B2 (en) * 2007-10-12 2010-12-28 Harris Corporation Communications system using adaptive filter that is selected based on output power
US8107572B1 (en) 2007-10-12 2012-01-31 Harris Corporation Communications system using adaptive filter for interference reduction
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
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
EP3324543B1 (en) * 2016-11-18 2020-01-08 Nxp B.V. Adaptive filter and method of operating an adaptive filter
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
US5050119A (en) * 1989-10-06 1991-09-17 North American Philips Corporation Optimized sparse transversal filter
US5045945A (en) * 1989-10-06 1991-09-03 North American Philips Corporation Method of adaptive ghost cancellation
EP0421526B1 (en) * 1989-10-06 1996-07-31 Koninklijke Philips Electronics N.V. Adaptive ghost cancellation circuit
DE69125806T2 (de) * 1990-12-27 1997-09-25 Nippon Electric Co Adaptiver Filter geeignet zur schnellen Identifikation eines unbekannten Systems
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
DE69737416T2 (de) 2007-06-21
US5777910A (en) 1998-07-07
MY117012A (en) 2004-04-30
AU7304898A (en) 1998-06-10
CN1202653C (zh) 2005-05-18
KR20000053361A (ko) 2000-08-25
JP2001508959A (ja) 2001-07-03
CN1238095A (zh) 1999-12-08
WO1998023086A1 (en) 1998-05-28
EP0940035B1 (en) 2007-02-28
DE69737416D1 (de) 2007-04-12
EP0940035A1 (en) 1999-09-08

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