AU702966B2 - A trellis demapper of a convolutional decoder - Google Patents

A trellis demapper of a convolutional decoder Download PDF

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Publication number
AU702966B2
AU702966B2 AU65595/96A AU6559596A AU702966B2 AU 702966 B2 AU702966 B2 AU 702966B2 AU 65595/96 A AU65595/96 A AU 65595/96A AU 6559596 A AU6559596 A AU 6559596A AU 702966 B2 AU702966 B2 AU 702966B2
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Australia
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symbol
symbols
bit
subsets
output
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Ceased
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AU65595/96A
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English (en)
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AU6559596A (en
Inventor
Kumar Ramaswamy
John Sidney Stewart
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Technicolor USA Inc
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Thomson Consumer Electronics Inc
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Publication of AU6559596A publication Critical patent/AU6559596A/en
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Publication of AU702966B2 publication Critical patent/AU702966B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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]

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  • 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)
  • Color Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
AU65595/96A 1995-09-14 1996-09-13 A trellis demapper of a convolutional decoder Ceased AU702966B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/528370 1995-09-14
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 (2)

Publication Number Publication Date
AU6559596A AU6559596A (en) 1997-03-20
AU702966B2 true AU702966B2 (en) 1999-03-11

Family

ID=24105413

Family Applications (1)

Application Number Title Priority Date Filing Date
AU65595/96A Ceased AU702966B2 (en) 1995-09-14 1996-09-13 A trellis demapper of a convolutional decoder

Country Status (15)

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

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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
EP1129554B1 (en) 1998-11-14 2004-02-04 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
US8428188B2 (en) * 2009-06-17 2013-04-23 Techwell, Inc. Carrier phase offset correction for a QAM system
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 (1)

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US5469452A (en) * 1991-09-27 1995-11-21 Qualcomm Incorporated Viterbi decoder bit efficient chainback memory method and decoder incorporating same

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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
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US5848102A (en) * 1993-06-04 1998-12-08 Qualcomm Incorporated Method and apparatus for encoding/decoding QAM trellis coded data
US5651032A (en) * 1993-11-04 1997-07-22 Kabushiki Kaisha Toshiba Apparatus and method for trellis decoder
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KR0129577B1 (ko) * 1994-04-30 1998-04-10 배순훈 32-직각진폭변조방식을 이용하는 영상수신시스템에서 개선된 메트릭 계산방법
CA2161467C (en) * 1994-11-18 2001-01-30 Kumar Ramaswamy Apparatus for demodulating and decoding satellite, terrestrial and cable transmitted digital television data
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

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Also Published As

Publication number Publication date
KR100455489B1 (ko) 2005-01-13
JPH09181785A (ja) 1997-07-11
DE69633893D1 (de) 2004-12-30
EP0763901B1 (en) 2004-11-24
IN190522B (en:Method) 2003-08-09
CN1150770C (zh) 2004-05-19
CA2184437A1 (en) 1997-03-15
EP0763901A3 (en) 1999-02-03
MY113139A (en) 2001-11-30
HK1003696A1 (en) 1998-11-06
US5740203A (en) 1998-04-14
CA2184437C (en) 2007-11-20
BR9603743A (pt) 1998-06-02
MX9604103A (es) 1997-08-30
EP0763901A2 (en) 1997-03-19
CN1162238A (zh) 1997-10-15
JP3760001B2 (ja) 2006-03-29
AU6559596A (en) 1997-03-20
ES2231797T3 (es) 2005-05-16
TW318314B (en:Method) 1997-10-21
SG93804A1 (en) 2003-01-21
DE69633893T2 (de) 2005-12-01
KR970019654A (ko) 1997-04-30

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