SG93804A1 - A trellis demapper of a convolutional decorder - Google Patents

A trellis demapper of a convolutional decorder

Info

Publication number
SG93804A1
SG93804A1 SG9610629A SG1996010629A SG93804A1 SG 93804 A1 SG93804 A1 SG 93804A1 SG 9610629 A SG9610629 A SG 9610629A SG 1996010629 A SG1996010629 A SG 1996010629A SG 93804 A1 SG93804 A1 SG 93804A1
Authority
SG
Singapore
Prior art keywords
decorder
convolutional
trellis demapper
demapper
trellis
Prior art date
Application number
SG9610629A
Other languages
English (en)
Inventor
Ramaswamy Kumar
Sidney Stewart John
Original Assignee
Thomson Consumer Electronics
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 Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Publication of SG93804A1 publication Critical patent/SG93804A1/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]
    • H03M13/256—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with trellis coding, e.g. with convolutional codes and 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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]

Landscapes

  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Color Television Systems (AREA)
SG9610629A 1995-09-14 1996-09-12 A trellis demapper of a convolutional decorder SG93804A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/528,370 US5740203A (en) 1995-09-14 1995-09-14 Trellis demapper of a convolutional decoder for decoding pragmatic trellis codes suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data

Publications (1)

Publication Number Publication Date
SG93804A1 true SG93804A1 (en) 2003-01-21

Family

ID=24105413

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9610629A SG93804A1 (en) 1995-09-14 1996-09-12 A trellis demapper of a convolutional decorder

Country Status (16)

Country Link
US (1) US5740203A (xx)
EP (1) EP0763901B1 (xx)
JP (1) JP3760001B2 (xx)
KR (1) KR100455489B1 (xx)
CN (1) CN1150770C (xx)
AU (1) AU702966B2 (xx)
BR (1) BR9603743A (xx)
CA (1) CA2184437C (xx)
DE (1) DE69633893T2 (xx)
ES (1) ES2231797T3 (xx)
HK (1) HK1003696A1 (xx)
IN (1) IN190522B (xx)
MX (1) MX9604103A (xx)
MY (1) MY113139A (xx)
SG (1) SG93804A1 (xx)
TW (1) TW318314B (xx)

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DE19529982A1 (de) * 1995-08-16 1997-02-20 Bosch Gmbh Robert Verfahren zur Synchronisation
US5995551A (en) * 1997-08-15 1999-11-30 Sicom, Inc. Rotationally invariant pragmatic trellis coded digital communication system and method therefor
US6078625A (en) * 1997-10-20 2000-06-20 Sicom, Inc. Pragmatic decoder and method therefor
US6738949B2 (en) * 1998-05-13 2004-05-18 Matsushita Electric Industrial Co., Ltd. Error correction circuit and error correction method
US6195778B1 (en) 1998-07-30 2001-02-27 Lsi Logic Corp. Demodulation of DVD codewords using dependency-sorted tables for duplicate/dependent and unique/non-dependent mappings
US20010028630A1 (en) * 1998-11-09 2001-10-11 Doron Burshtein Methods and apparatus for robust and low-complexity QAM modulation
WO2000030311A1 (en) 1998-11-14 2000-05-25 Stmicroelectronics Asia Pacific Pte Ltd Methods of efficient implementation of trellis based spectral shaping with lookahead
KR100398969B1 (ko) * 1999-06-08 2003-09-19 주식회사 대우일렉트로닉스 Ｔｃｍ 디코더용 256-ｑａｍ 브랜치 매트릭 회로
US7263141B1 (en) * 1999-06-09 2007-08-28 Thomson Licensing Code mapping in a trellis decoder
US6680986B1 (en) * 1999-11-22 2004-01-20 Intelsat Global Service Corporation Method for implementing shared channel decoder for onboard processing satellites
KR100332805B1 (ko) * 2000-02-29 2002-04-18 구자홍 직렬 연쇄 컨벌루션 부호화 장치 및 부호화/복호화 방법
KR20010094694A (ko) * 2000-04-06 2001-11-01 윤종용 티시엠 복호장치 및 방법
US20020051501A1 (en) * 2000-04-28 2002-05-02 Victor Demjanenko Use of turbo-like codes for QAM modulation using independent I and Q decoding techniques and applications to xDSL systems
US6745366B1 (en) * 2000-11-21 2004-06-01 Daewoo Electronics Corporation Error correcting method and apparatus for N:N+1 channel codes
WO2003043283A1 (fr) * 2001-11-14 2003-05-22 Linkair Communications, Inc. Procede de modulation d'amplitude en quadrature utilise dans un systeme de communication mobile numerique
KR100454398B1 (ko) * 2001-12-28 2004-10-26 한국전자통신연구원 적응형 모뎀 장치 및, 이에 적용되는 프래그머틱 복호기및 복호 방법
US7046747B2 (en) * 2002-04-16 2006-05-16 Intel Corporation Viterbi decoder and decoding method using rescaled branch metrics in add-compare-select operations
US7020223B2 (en) 2002-04-16 2006-03-28 Intel Corporation Viterbi decoder and method using sequential two-way add-compare-select operations
CN1320794C (zh) * 2002-11-13 2007-06-06 上海芯华微电子有限公司 收缩卷积编码的单步方法和装置
TWI271933B (en) * 2005-06-07 2007-01-21 Realtek Semiconductor Corp Quadrature amplitude modulation trellis coded modulation decoding apparatus and method thereof
US8098773B1 (en) 2005-09-19 2012-01-17 Piesinger Gregory H Communication method and apparatus
KR100706618B1 (ko) 2005-12-09 2007-04-12 한국전자통신연구원 반복 복호기를 위한 고차변조 방식에 적합한 연판정 디매핑방법 및 그를 이용한 오류 정정 장치
US7634000B1 (en) 2006-05-22 2009-12-15 Redpine Signals, Inc. Noise estimator for a communications system
US8422611B2 (en) * 2009-06-17 2013-04-16 Techwell, Inc. Analog equalizer systems and methods for baseband video signals
US10650208B1 (en) 2019-03-12 2020-05-12 Microsoft Technology Licensing, Llc Hybrid two-dimensional barcode and hybrid two-dimensional barcode generator
US10853609B2 (en) 2019-03-12 2020-12-01 Microsoft Technology Licensing, Llc Hybrid two-dimensional barcode reader

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052463A1 (en) * 1980-11-14 1982-05-26 Plessey Overseas Limited Soft decision convolutional code transmission system
EP0652643A2 (en) * 1993-11-04 1995-05-10 Kabushiki Kaisha Toshiba Apparatus and method for trellis decoder
EP0663775A2 (en) * 1994-01-18 1995-07-19 General Instrument Corporation Of Delaware Method and apparatus for communicating multilevel modulated data using concatenated coding

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CH609510A5 (xx) * 1976-06-18 1979-02-28 Ibm
US4713817A (en) * 1985-04-25 1987-12-15 Codex Corporation Multidimensional, convolutionally coded communication systems
US4866395A (en) * 1988-11-14 1989-09-12 Gte Government Systems Corporation Universal carrier recovery and data detection for digital communication systems
US5233630A (en) * 1991-05-03 1993-08-03 Qualcomm Incorporated Method and apparatus for resolving phase ambiguities in trellis coded modulated data
US5233629A (en) * 1991-07-26 1993-08-03 General Instrument Corporation Method and apparatus for communicating digital data using trellis coded qam
US5469452A (en) * 1991-09-27 1995-11-21 Qualcomm Incorporated Viterbi decoder bit efficient chainback memory method and decoder incorporating same
US5363408A (en) * 1992-03-24 1994-11-08 General Instrument Corporation Mode selective quadrature amplitude modulation communication system
US5848102A (en) * 1993-06-04 1998-12-08 Qualcomm Incorporated Method and apparatus for encoding/decoding QAM trellis coded data
KR0129577B1 (ko) * 1994-04-30 1998-04-10 배순훈 32-직각진폭변조방식을 이용하는 영상수신시스템에서 개선된 메트릭 계산방법
US5497401A (en) * 1994-11-18 1996-03-05 Thomson Consumer Electronics, Inc. Branch metric computer for a Viterbi decoder of a punctured and pragmatic trellis code convolutional decoder suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data
CA2161467C (en) * 1994-11-18 2001-01-30 Kumar Ramaswamy Apparatus for demodulating and decoding satellite, terrestrial and cable transmitted digital television data

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052463A1 (en) * 1980-11-14 1982-05-26 Plessey Overseas Limited Soft decision convolutional code transmission system
EP0652643A2 (en) * 1993-11-04 1995-05-10 Kabushiki Kaisha Toshiba Apparatus and method for trellis decoder
EP0663775A2 (en) * 1994-01-18 1995-07-19 General Instrument Corporation Of Delaware Method and apparatus for communicating multilevel modulated data using concatenated coding

Also Published As

Publication number Publication date
MX9604103A (es) 1997-08-30
CA2184437C (en) 2007-11-20
DE69633893D1 (de) 2004-12-30
CN1162238A (zh) 1997-10-15
ES2231797T3 (es) 2005-05-16
MY113139A (en) 2001-11-30
JP3760001B2 (ja) 2006-03-29
IN190522B (xx) 2003-08-09
AU6559596A (en) 1997-03-20
CA2184437A1 (en) 1997-03-15
BR9603743A (pt) 1998-06-02
KR970019654A (ko) 1997-04-30
AU702966B2 (en) 1999-03-11
CN1150770C (zh) 2004-05-19
HK1003696A1 (en) 1998-11-06
DE69633893T2 (de) 2005-12-01
US5740203A (en) 1998-04-14
KR100455489B1 (ko) 2005-01-13
EP0763901A3 (en) 1999-02-03
EP0763901A2 (en) 1997-03-19
EP0763901B1 (en) 2004-11-24
TW318314B (xx) 1997-10-21
JPH09181785A (ja) 1997-07-11

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