BR0309422A - equalizador de canal conjunto kalman-viterbi - Google Patents

equalizador de canal conjunto kalman-viterbi

Info

Publication number
BR0309422A
BR0309422A BRPI0309422-7A BR0309422A BR0309422A BR 0309422 A BR0309422 A BR 0309422A BR 0309422 A BR0309422 A BR 0309422A BR 0309422 A BR0309422 A BR 0309422A
Authority
BR
Brazil
Prior art keywords
signal
kalman
viterbi
channel equalizer
symbols
Prior art date
Application number
BRPI0309422-7A
Other languages
English (en)
Inventor
Sung Hoon Kim
Yong Hun Sim
Seung Won Kim
Dae Jin Kim
Chieteuk Ahn
Original Assignee
Korea Electronics Telecomm
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 Korea Electronics Telecomm filed Critical Korea Electronics Telecomm
Publication of BR0309422A publication Critical patent/BR0309422A/pt

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
    • H04N5/211—Ghost signal cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television 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
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • 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
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03617—Time recursive algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Error Detection And Correction (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

"EQUALIZADOR DE CANAL CONJUNTO KALMAN-VITERBI". Em um equalizador de canal aplicável a um receptor de televisão digital, um filtro para frente e um filtro para trás efetuam a filtragem de um sinal de entrada e um sinal pré-determinado. Um decodificador Viterbi corrige erros durante um procedimento de transmissão em um modo cego. Um bloco de armazenamento de símbolo de treinamento armazena símbolos de treinamento. Um sinal de saída do decodificador Viterbi e símbolos são fornecidos ao filtro para trás de acordo com um modo cego ou um modo de treinamento. O ganho Kalman é calculado em um bloco de cálculo de ganho Kalman e um sinal de erro é calculado através da comparação de um sinal equalizado, dos símbolos e do sinal de saída do decodificador Viterbi entre os mesmos. Um coeficiente de corte é atualizado através do uso do sinal de erro calculado e do ganho Kalman.
BRPI0309422-7A 2002-04-17 2003-04-17 equalizador de canal conjunto kalman-viterbi BR0309422A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20020020845 2002-04-17
PCT/KR2003/000779 WO2003090461A1 (en) 2002-04-17 2003-04-17 Kalman-viterbi joint channel equalizer

Publications (1)

Publication Number Publication Date
BR0309422A true BR0309422A (pt) 2007-03-06

Family

ID=29244745

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0309422-7A BR0309422A (pt) 2002-04-17 2003-04-17 equalizador de canal conjunto kalman-viterbi

Country Status (8)

Country Link
US (1) US7548582B2 (pt)
KR (1) KR100627154B1 (pt)
CN (1) CN1301010C (pt)
AU (1) AU2003225385A1 (pt)
BR (1) BR0309422A (pt)
CA (1) CA2482815C (pt)
MX (1) MXPA04010226A (pt)
WO (1) WO2003090461A1 (pt)

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KR100505703B1 (ko) * 2003-08-21 2005-08-03 삼성전자주식회사 채널 등화기 및 채널 등화 방법
JP4593959B2 (ja) * 2004-04-09 2010-12-08 ソニー株式会社 適応等化装置及び方法
US7532667B2 (en) * 2004-11-05 2009-05-12 Interdigital Technology Corporation Pilot-directed and pilot/data-directed equalizers
US7702711B2 (en) * 2005-06-20 2010-04-20 Motorola, Inc. Reduced complexity recursive least square lattice structure adaptive filter by means of estimating the backward and forward error prediction squares using binomial expansion
KR100762135B1 (ko) * 2005-11-28 2007-10-02 엘지전자 주식회사 디지털 방송 수신 시스템에서의 채널 등화 장치 및 그 방법
KR101199374B1 (ko) 2005-12-20 2012-11-09 엘지전자 주식회사 디지털 방송 시스템 및 처리 방법
WO2007091779A1 (en) 2006-02-10 2007-08-16 Lg Electronics Inc. Digital broadcasting receiver and method of processing data
WO2007126196A1 (en) 2006-04-29 2007-11-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007136166A1 (en) 2006-05-23 2007-11-29 Lg Electronics Inc. Digital broadcasting system and method of processing data
US7873104B2 (en) 2006-10-12 2011-01-18 Lg Electronics Inc. Digital television transmitting system and receiving system and method of processing broadcasting data
US8385397B2 (en) * 2007-01-19 2013-02-26 Techwell Llc Method for determining the step size for an LMS adaptive equalizer for 8VSB
KR101285887B1 (ko) 2007-03-26 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101253185B1 (ko) 2007-03-26 2013-04-10 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101285888B1 (ko) 2007-03-30 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
WO2009005326A2 (en) 2007-07-04 2009-01-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
CN101741783A (zh) * 2009-12-24 2010-06-16 北京韦加航通科技有限责任公司 一种单载波频域均衡***中信道追踪的方法
US11108599B1 (en) * 2020-07-22 2021-08-31 Huawei Technologies Co. Ltd. Method and apparatus for frequency domain equalization with low complexity and loop delay
CN116016059B (zh) * 2022-12-14 2024-06-04 华中科技大学 提升高速低信噪比光通信链路传输性能的均衡方法及***

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3172198B2 (ja) * 1991-03-01 2001-06-04 株式会社東芝 等化方式
JP3560991B2 (ja) * 1993-09-20 2004-09-02 株式会社東芝 適応型最尤系列推定装置
US5706057A (en) * 1994-03-21 1998-01-06 Rca Thomson Licensing Corporation Phase detector in a carrier recovery network for a vestigial sideband signal
US5822380A (en) * 1996-08-12 1998-10-13 Ericsson Inc. Apparatus and method for joint channel estimation
US5930296A (en) * 1997-04-08 1999-07-27 Glenayre Electronics, Inc. Low-complexity bidirectional equalizer
US6002713A (en) * 1997-10-22 1999-12-14 Pc Tel, Inc. PCM modem equalizer with adaptive compensation for robbed bit signalling
KR100266065B1 (ko) * 1997-11-08 2000-09-15 김영환 고속채널등화시스템
KR200244234Y1 (ko) * 1998-04-01 2001-12-01 김기복 손가락끼임방지장치
US6563889B1 (en) * 1998-10-01 2003-05-13 Lsi Logic Corporation Method and apparatus for adapting the boost of a read channel filter
US6426780B1 (en) * 1998-10-14 2002-07-30 Samsung Electronics Co., Ltd. DTV receiver with low-band final I-F signal filtered for suppressing co-channel interfering NTSC audio carrier
JP2001251226A (ja) * 2000-03-03 2001-09-14 Yrp Kokino Idotai Tsushin Kenkyusho:Kk 双方向ビタビ型等化器
US7113540B2 (en) * 2001-09-18 2006-09-26 Broadcom Corporation Fast computation of multi-input-multi-output decision feedback equalizer coefficients
US7099409B2 (en) * 2002-02-13 2006-08-29 Broadcom Corporation Channel estimation and/or equalization using repeated adaptation
KR20040019499A (ko) * 2002-08-28 2004-03-06 삼성전자주식회사 등화속도를 향상시키는 등화기를 갖는 단일반송파수신기및 그의 등화방법

Also Published As

Publication number Publication date
AU2003225385A1 (en) 2003-11-03
US20050286622A1 (en) 2005-12-29
MXPA04010226A (es) 2005-06-08
CN1301010C (zh) 2007-02-14
KR20040106328A (ko) 2004-12-17
CN1656800A (zh) 2005-08-17
CA2482815C (en) 2008-07-08
US7548582B2 (en) 2009-06-16
WO2003090461A1 (en) 2003-10-30
CA2482815A1 (en) 2003-10-30
KR100627154B1 (ko) 2006-09-25

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 13A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2386 DE 27-09-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.