ES2142375T3 - Metodo de tratamiento ulterior y aparato para la generacion de fiabilidad de simbolos. - Google Patents

Metodo de tratamiento ulterior y aparato para la generacion de fiabilidad de simbolos.

Info

Publication number
ES2142375T3
ES2142375T3 ES94303374T ES94303374T ES2142375T3 ES 2142375 T3 ES2142375 T3 ES 2142375T3 ES 94303374 T ES94303374 T ES 94303374T ES 94303374 T ES94303374 T ES 94303374T ES 2142375 T3 ES2142375 T3 ES 2142375T3
Authority
ES
Spain
Prior art keywords
symbol
symbols
treatment method
further treatment
decoded
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 - Lifetime
Application number
ES94303374T
Other languages
English (en)
Inventor
Peter Hoeher
Nambirajan Seshadri
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.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2142375T3 publication Critical patent/ES2142375T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • H03M13/4138—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors soft-output Viterbi algorithm based decoding, i.e. Viterbi decoding with weighted decisions
    • H03M13/4146—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors soft-output Viterbi algorithm based decoding, i.e. Viterbi decoding with weighted decisions soft-output Viterbi decoding according to Battail and Hagenauer in which the soft-output is determined using path metric differences along the maximum-likelihood path, i.e. "SOVA" 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
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors

Landscapes

  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Hardware Redundancy (AREA)

Abstract

SE DESCRIBE UN METODO PARA UN POSTPROCESADOR (PROGRAMA DE ORDENADOR QUE TRABAJA CON LOS RESULTADOS DE OTROS PROGRAMAS) PARA PROPORCIONAR INFORMACION DE FIABILIDAD SOBRE CADA SIMBOLO DE DATOS DECODIFICADOS EN LA SALIDA DE UN DECODIFICADOR ARBITRARIO. LA INFORMACION DE FIABILIDAD SE GENERA COMPARANDO LA SECUENCIA DECODIFICADA CON UNA PEQUEÑA LISTA DE SECUENCIAS ALTERNATIVAS, QUE DIFIEREN DE LA SECUENCIA DECODIFICADA AL MENOS EN EL SIMBOLO PARA EL CUAL SE ESTA EVALUANDO LA FIABILIDAD. SE HA VISTO QUE ESTE ALGORITMO ES UNA SIMPLIFICACION DEL DETECTOR OPTIMO SIMBOLO POR SIMBOLO (OSSD).
ES94303374T 1993-05-21 1994-05-11 Metodo de tratamiento ulterior y aparato para la generacion de fiabilidad de simbolos. Expired - Lifetime ES2142375T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/065,296 US5457704A (en) 1993-05-21 1993-05-21 Post processing method and apparatus for symbol reliability generation

Publications (1)

Publication Number Publication Date
ES2142375T3 true ES2142375T3 (es) 2000-04-16

Family

ID=22061713

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94303374T Expired - Lifetime ES2142375T3 (es) 1993-05-21 1994-05-11 Metodo de tratamiento ulterior y aparato para la generacion de fiabilidad de simbolos.

Country Status (8)

Country Link
US (1) US5457704A (es)
EP (1) EP0625829B1 (es)
JP (1) JP3537183B2 (es)
AU (1) AU673251B2 (es)
DE (1) DE69421963T2 (es)
ES (1) ES2142375T3 (es)
HK (1) HK1003214A1 (es)
SG (1) SG43207A1 (es)

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US7434145B2 (en) * 2003-04-02 2008-10-07 Qualcomm Incorporated Extracting soft information in a block-coherent communication system
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Also Published As

Publication number Publication date
EP0625829A3 (en) 1997-08-20
HK1003214A1 (en) 1998-10-16
DE69421963T2 (de) 2000-07-13
US5457704A (en) 1995-10-10
JPH0722968A (ja) 1995-01-24
SG43207A1 (en) 1997-10-17
EP0625829A2 (en) 1994-11-23
JP3537183B2 (ja) 2004-06-14
EP0625829B1 (en) 1999-12-08
DE69421963D1 (de) 2000-01-13
AU673251B2 (en) 1996-10-31
AU6321994A (en) 1994-11-24

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