BR0305571A - Aparelho e método para reduzir taxas de erro de bit (ber) e taxas de erro de quadro (fer) utilizando a decodificação turbo em um sistema de comunicação digital - Google Patents

Aparelho e método para reduzir taxas de erro de bit (ber) e taxas de erro de quadro (fer) utilizando a decodificação turbo em um sistema de comunicação digital

Info

Publication number
BR0305571A
BR0305571A BR0305571-0A BR0305571A BR0305571A BR 0305571 A BR0305571 A BR 0305571A BR 0305571 A BR0305571 A BR 0305571A BR 0305571 A BR0305571 A BR 0305571A
Authority
BR
Brazil
Prior art keywords
error rates
adder
communication system
turbo decoding
rates
Prior art date
Application number
BR0305571-0A
Other languages
English (en)
Inventor
Nam-Yul Yu
Min-Goo Kim
Sang-Hyuck Ha
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BR0305571A publication Critical patent/BR0305571A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
    • H03M13/3911—Correction factor, e.g. approximations of the exp(1+x) function

Landscapes

  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Detection And Correction Of Errors (AREA)

Abstract

"APARELHO E MéTODO PARA REDUZIR TAXAS DE ERRO DE BIT (BER) E TAXAS DE ERRO DE QUADRO (FER) UTILIZANDO A DECODIFICAçãO TURBO EM UM SISTEMA DE COMUNICAçãO DIGITAL". Um aparelho e método FEC para reduzir taxas de erro de bit e taxas de erro de quadro utilizando a decodificação turbo em um sistema de comunicação. Em um decodificador constituinte para decodificar um código turbo, um primeiro somador calcula o LLR de um símbolo de código recebido ao calcular a diferença entre a probabilidade do símbolo ser 1 e a do símbolo ser 0 em um estado arbitrário de uma treliça de decodificação turbo. Um segundo somador soma a informação de transmissão e a informação de prioridade do símbolo de código. Um terceiro somador calcula a diferença entre as saídas do primeiro e do segundo somadores como informação extrínseca. Um primeiro multiplicador multiplica a saída do terceiro somador. Uma calculadora de valor de correção calcula um valor de correção utilizando a diferença entre a melhor e a segunda melhor métrica do símbolo de código. Um quarto somador soma o valor de correção à saída do primeiro multiplicador.
BR0305571-0A 2002-07-19 2003-07-19 Aparelho e método para reduzir taxas de erro de bit (ber) e taxas de erro de quadro (fer) utilizando a decodificação turbo em um sistema de comunicação digital BR0305571A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2002-0042686A KR100487183B1 (ko) 2002-07-19 2002-07-19 터보 부호의 복호 장치 및 방법
PCT/KR2003/001435 WO2004010588A1 (en) 2002-07-19 2003-07-19 Appartaus and method for reducing bit error rates (ber) and frame error rates (fer) using turbo decoding in a digital communication system

Publications (1)

Publication Number Publication Date
BR0305571A true BR0305571A (pt) 2004-09-28

Family

ID=29775041

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0305571-0A BR0305571A (pt) 2002-07-19 2003-07-19 Aparelho e método para reduzir taxas de erro de bit (ber) e taxas de erro de quadro (fer) utilizando a decodificação turbo em um sistema de comunicação digital

Country Status (10)

Country Link
US (1) US7032156B2 (pt)
EP (1) EP1383246B1 (pt)
JP (1) JP3958764B2 (pt)
KR (1) KR100487183B1 (pt)
CN (1) CN1557052B (pt)
AU (1) AU2003247190B2 (pt)
BR (1) BR0305571A (pt)
CA (1) CA2458450C (pt)
RU (1) RU2263397C1 (pt)
WO (1) WO2004010588A1 (pt)

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US8514961B2 (en) 2010-02-04 2013-08-20 Ntt Docomo, Inc. Method and apparatus for distributed space-time coding in wireless radio networks
EP2398175B1 (en) * 2010-06-18 2012-08-22 Cisco Technology, Inc. Method and circuit for BER estimation
JP5721486B2 (ja) * 2011-03-18 2015-05-20 株式会社日立国際電気 通信機
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Also Published As

Publication number Publication date
KR100487183B1 (ko) 2005-05-03
WO2004010588A1 (en) 2004-01-29
AU2003247190B2 (en) 2006-03-09
CA2458450A1 (en) 2004-01-29
RU2263397C1 (ru) 2005-10-27
US20040153956A1 (en) 2004-08-05
US7032156B2 (en) 2006-04-18
JP3958764B2 (ja) 2007-08-15
CN1557052B (zh) 2010-05-26
CN1557052A (zh) 2004-12-22
EP1383246B1 (en) 2013-04-17
KR20040008945A (ko) 2004-01-31
CA2458450C (en) 2007-11-27
JP2005532766A (ja) 2005-10-27
EP1383246A2 (en) 2004-01-21
AU2003247190A1 (en) 2004-02-09
EP1383246A3 (en) 2004-09-29

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