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CA2079287A1 - Modulation codee a protection non uniforme contre les erreurs pour les canaux sujets aux evanouissements - Google Patents

Modulation codee a protection non uniforme contre les erreurs pour les canaux sujets aux evanouissements

Info

Publication number
CA2079287A1
CA2079287A1 CA2079287A CA2079287A CA2079287A1 CA 2079287 A1 CA2079287 A1 CA 2079287A1 CA 2079287 A CA2079287 A CA 2079287A CA 2079287 A CA2079287 A CA 2079287A CA 2079287 A1 CA2079287 A1 CA 2079287A1
Authority
CA
Canada
Prior art keywords
error protection
coded modulation
fading channels
unequal error
celp
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.)
Granted
Application number
CA2079287A
Other languages
English (en)
Other versions
CA2079287C (fr
Inventor
Nambirajan Seshadri
Carl-Erik Wilhelm Sundberg
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
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2079287A1 publication Critical patent/CA2079287A1/fr
Application granted granted Critical
Publication of CA2079287C publication Critical patent/CA2079287C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03M13/25—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
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/186—Phase-modulated carrier systems, i.e. using phase-shift keying in which the information is carried by both the individual signal points and the subset to which the individual signal points belong, e.g. coset coding or related schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0098—Unequal error protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
CA002079287A 1991-11-26 1992-09-28 Modulation codee a protection non uniforme contre les erreurs pour les canaux sujets aux evanouissements Expired - Fee Related CA2079287C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/797,831 US5289501A (en) 1991-11-26 1991-11-26 Coded modulation with unequal error protection for fading channels
US797,831 1991-11-26

Publications (2)

Publication Number Publication Date
CA2079287A1 true CA2079287A1 (fr) 1993-05-27
CA2079287C CA2079287C (fr) 1996-11-26

Family

ID=25171911

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002079287A Expired - Fee Related CA2079287C (fr) 1991-11-26 1992-09-28 Modulation codee a protection non uniforme contre les erreurs pour les canaux sujets aux evanouissements

Country Status (4)

Country Link
US (1) US5289501A (fr)
EP (1) EP0544463A3 (fr)
JP (1) JP2509784B2 (fr)
CA (1) CA2079287C (fr)

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KR100374032B1 (ko) * 1997-09-11 2003-05-22 삼성전자주식회사 이동통신시스템의코딩및주파수다이버시티구현방법및장치
US6031874A (en) * 1997-09-26 2000-02-29 Ericsson Inc. Unequal error protection in coded modulation schemes
WO1999017509A1 (fr) * 1997-09-26 1999-04-08 Ericsson Inc. Mises en correspondance de symboles pour modulations codees
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US6307890B1 (en) * 1999-12-06 2001-10-23 Cue Corporation High density FM subcarrier modulation with standardized network layer
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EP1262027B1 (fr) * 2000-02-07 2005-08-31 Ericsson Inc. Procede de codage differentiel et de modulation
WO2002007327A1 (fr) * 2000-07-17 2002-01-24 Koninklijke Philips Electronics N.V. Codage de flux de donnees
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US6718504B1 (en) * 2002-06-05 2004-04-06 Arc International Method and apparatus for implementing a data processor adapted for turbo decoding
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US12289192B2 (en) 2008-12-30 2025-04-29 Constellation Designs, LLC Systems and methods for receiving data transmitted using non-uniform QAM 256 constellations
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JPH02291744A (ja) * 1989-05-02 1990-12-03 Nec Corp 符号化変調方式
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US5105442A (en) * 1990-11-07 1992-04-14 At&T Bell Laboratories Coded modulation with unequal error protection

Also Published As

Publication number Publication date
EP0544463A3 (en) 1993-06-30
JPH0669971A (ja) 1994-03-11
US5289501A (en) 1994-02-22
EP0544463A2 (fr) 1993-06-02
CA2079287C (fr) 1996-11-26
JP2509784B2 (ja) 1996-06-26

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