MY112861A - Viterbi decoder for digital packet signals - Google Patents

Viterbi decoder for digital packet signals

Info

Publication number
MY112861A
MY112861A MYPI97001485A MYPI19971485A MY112861A MY 112861 A MY112861 A MY 112861A MY PI97001485 A MYPI97001485 A MY PI97001485A MY PI19971485 A MYPI19971485 A MY PI19971485A MY 112861 A MY112861 A MY 112861A
Authority
MY
Malaysia
Prior art keywords
data
response
trellis
signal
formats
Prior art date
Application number
MYPI97001485A
Inventor
Hu Keren
David Caldwell Maurice
Wei-Lian Lin William
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
Priority claimed from US08/629,672 external-priority patent/US5841819A/en
Application filed by Thomson Multimedia Sa filed Critical Thomson Multimedia Sa
Publication of MY112861A publication Critical patent/MY112861A/en

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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • 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)
  • Dc Digital Transmission (AREA)

Abstract

AN ADAPTIVE TRELLIS DECODER (24) SEAMLESSLY SWITCHES BETWEEN MULTIPLE INPUT SIGNAL FORMATS. THE TRELLIS DECODER EMPLOYS A CODE SEQUENCE DETECTION SYSTEM (30,40), DESCRIBED IN THE CONTEXT OF AN EXEMPLARY VITERBI DECODING SYSTEM, THAT DETECTS CODES IN AN INPUT INTERLEAVED PACKET D''ATA SIGNAL. THE CODE SEQUENCE DETECTION SYSTEM ALSO REDUCES THE DELAY (LATENCY) BETWEEN THE INPUT OF ENCODED DATA AND THE OUTPUT OF DECODED DATA. THE CODE SEQUENCE DETECTION SYSTEM PROVIDES BRANCH METRIC VALUES IN RESPONSE TO THE INPUT INTERLEAVED PACKET DATA SIGNAL WHICH EXHIBITS ONE OF A PLURALITY OF SIGNAL FORMATS, E.G. PARTIAL RESPONSE AND NORMAL FORMATS. A VITERBI DECODER ( 40) DECODES THE PACKET DATA SIGNAL TO PRODUCE A DECODED OUTPUT IN RESPONSE TO THE BRANCH METRIC VALUES WHICH INCLUDE A SUBSTANTIALLY REPLICATED VALUE ASSOCIATED WITH ONE OF THE FORMATS. THE VITERBI DECODER INCLUDES A COMPARISON NETWORK (43) THAT PROVIDES DECISION DATA IN RESPONSE TO BRANCH METRIC VALUES ASSOCIATED WITH THE TRELLIS ENCODED DATA PACKETS. THE DECISION DATA IS ORGANIZED BY TRELLIS STATE AND BY DATA PACKET AND IS ASSOCIATED WITH TRELLIS STATE TRANSITIONS. A TRACEBACK NETWORK (47) PROVIDES DECODED DATA IN RESPONSE TO THE ORGANIZED DECISION DATA.
MYPI97001485A 1996-04-09 1997-04-07 Viterbi decoder for digital packet signals MY112861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/629,672 US5841819A (en) 1996-04-09 1996-04-09 Viterbi decoder for digital packet signals

Publications (1)

Publication Number Publication Date
MY112861A true MY112861A (en) 2001-09-29

Family

ID=24524005

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI97001485A MY112861A (en) 1996-04-09 1997-04-07 Viterbi decoder for digital packet signals

Country Status (4)

Country Link
KR (1) KR100495185B1 (en)
DE (1) DE69722304T2 (en)
HK (1) HK1005397A1 (en)
MY (1) MY112861A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970010103B1 (en) * 1994-04-12 1997-06-21 Lg Electronics Inc Partial response trellis decoder for hdtv

Also Published As

Publication number Publication date
HK1005397A1 (en) 1999-01-08
KR970073148A (en) 1997-11-07
DE69722304D1 (en) 2003-07-03
KR100495185B1 (en) 2005-11-16
MX9702556A (en) 1998-03-31
DE69722304T2 (en) 2004-04-29

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