CA2079287A1 - Coded modulation with unequal error protection for fading channels - Google Patents

Coded modulation with unequal error protection for fading channels

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
French (fr)
Other versions
CA2079287C (en
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/en
Application granted granted Critical
Publication of CA2079287C publication Critical patent/CA2079287C/en
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

Abstract

Information is transmitted in digital form over fading channels using DPSK coded modulation incorporating multi-level coding in order to provide unequal error protection for different classes of data such as generated by CELP or other speech encoders.
CA002079287A 1991-11-26 1992-09-28 Coded modulation with unequal error protection for fading channels Expired - Fee Related CA2079287C (en)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=25171911

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002079287A Expired - Fee Related CA2079287C (en) 1991-11-26 1992-09-28 Coded modulation with unequal error protection for fading channels

Country Status (4)

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

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675971B1 (en) * 1991-04-23 1993-08-06 France Telecom CORRECTIVE ERROR CODING METHOD WITH AT LEAST TWO SYSTEMIC CONVOLUTIVE CODES IN PARALLEL, ITERATIVE DECODING METHOD, CORRESPONDING DECODING MODULE AND DECODER.
DE4135070C1 (en) * 1991-10-24 1993-05-19 Institut Fuer Rundfunktechnik Gmbh, 8000 Muenchen, De
EP0578313B1 (en) * 1992-07-08 1998-12-02 Laboratoires D'electronique Philips S.A.S. Concatenated coding for OFDM transmission
GB9217819D0 (en) * 1992-08-21 1992-10-07 Philips Electronics Uk Ltd Data coding system
DE4240226C2 (en) * 1992-11-30 1996-12-12 Deutsche Forsch Luft Raumfahrt Process for the digital transmission of hierarchical HDTV, EDTV and SDTV television signals
DE69421306T2 (en) * 1993-02-19 2000-04-13 Nec Corp Method and device for codage for error control in a digital data communication system
US5844922A (en) * 1993-02-22 1998-12-01 Qualcomm Incorporated High rate trellis coding and decoding method and apparatus
JPH0738448A (en) * 1993-06-29 1995-02-07 Nec Corp Error correction system
US5463641A (en) * 1993-07-16 1995-10-31 At&T Ipm Corp. Tailored error protection
CA2131674A1 (en) * 1993-09-10 1995-03-11 Kalyan Ganesan High performance error control coding in channel encoders and decoders
JPH07245635A (en) * 1994-03-04 1995-09-19 Sony Corp Signal point mapping method and signal point detection method
WO1995035538A1 (en) * 1994-06-21 1995-12-28 Seo Michael J Method and system for encoding and decoding signals using a fast algebraic error correcting code
US5706282A (en) * 1994-11-28 1998-01-06 Lucent Technologies Inc. Asymmetric speech coding for a digital cellular communications system
US5617541A (en) * 1994-12-21 1997-04-01 International Computer Science Institute System for packetizing data encoded corresponding to priority levels where reconstructed data corresponds to fractionalized priority level and received fractionalized packets
EP0749211B1 (en) * 1995-06-12 2003-05-02 Siemens Aktiengesellschaft Method and coding device for a secure transmission of data by means of a multi-component coding
US6307868B1 (en) * 1995-08-25 2001-10-23 Terayon Communication Systems, Inc. Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops
US6125150A (en) * 1995-10-30 2000-09-26 The Board Of Trustees Of The Leland Stanford, Junior University Transmission system using code designed for transmission with periodic interleaving
JP3399725B2 (en) * 1995-10-31 2003-04-21 富士通株式会社 Multimedia wireless communication system for asynchronous transfer mode
US6765904B1 (en) 1999-08-10 2004-07-20 Texas Instruments Incorporated Packet networks
US5850482A (en) * 1996-04-17 1998-12-15 Mcdonnell Douglas Corporation Error resilient method and apparatus for entropy coding
US5949796A (en) * 1996-06-19 1999-09-07 Kumar; Derek D. In-band on-channel digital broadcasting method and system
US5822372A (en) * 1996-08-02 1998-10-13 Motorola, Inc. Multicarrier system using subchannel characteristics to implement different error rates within a data stream
JP3634082B2 (en) * 1996-08-29 2005-03-30 富士通株式会社 Transmitter and receiver
US5832044A (en) * 1996-09-27 1998-11-03 Elvino S. Sousa Transmitter antenna diversity and fading-resistant modulation for wireless communication systems
US5974376A (en) * 1996-10-10 1999-10-26 Ericsson, Inc. Method for transmitting multiresolution audio signals in a radio frequency communication system as determined upon request by the code-rate selector
US5835480A (en) * 1996-10-15 1998-11-10 Chennakeshu; Sandeep Circuitry and method for simultaneously transmitting voice and data information
US6154499A (en) * 1996-10-21 2000-11-28 Comsat Corporation Communication systems using nested coder and compatible channel coding
US6252911B1 (en) * 1997-06-11 2001-06-26 Texas Instruments Incorporated Trellis shaping for PCM modems
KR100374032B1 (en) * 1997-09-11 2003-05-22 삼성전자주식회사 Recording medium storing real time record/playback information, method and apparatus for recording and reproducing in real time, and file operating method using the same
US6031874A (en) * 1997-09-26 2000-02-29 Ericsson Inc. Unequal error protection in coded modulation schemes
AU9576198A (en) * 1997-09-26 1999-04-23 Ericsson Inc. Symbol mappings for coded modulations
US6405338B1 (en) * 1998-02-11 2002-06-11 Lucent Technologies Inc. Unequal error protection for perceptual audio coders
US6445686B1 (en) * 1998-09-03 2002-09-03 Lucent Technologies Inc. Method and apparatus for improving the quality of speech signals transmitted over wireless communication facilities
CN1143439C (en) * 1998-09-24 2004-03-24 西门子公司 Method for common source and channel coding
KR100585828B1 (en) 1999-05-27 2006-06-01 에스케이 텔레콤주식회사 Error correction method in speech coder
KR100585829B1 (en) 1999-05-27 2006-06-01 에스케이 텔레콤주식회사 Error correction method in speech coder
US6801499B1 (en) 1999-08-10 2004-10-05 Texas Instruments Incorporated Diversity schemes for packet communications
US6678267B1 (en) * 1999-08-10 2004-01-13 Texas Instruments Incorporated Wireless telephone with excitation reconstruction of lost packet
US6801532B1 (en) 1999-08-10 2004-10-05 Texas Instruments Incorporated Packet reconstruction processes for packet communications
US6757256B1 (en) 1999-08-10 2004-06-29 Texas Instruments Incorporated Process of sending packets of real-time information
US6744757B1 (en) 1999-08-10 2004-06-01 Texas Instruments Incorporated Private branch exchange systems for packet communications
US6804244B1 (en) 1999-08-10 2004-10-12 Texas Instruments Incorporated Integrated circuits for packet communications
US6914934B1 (en) * 1999-09-03 2005-07-05 Agere Systems Inc. Multiplier-free methods and apparatus for signal processing in a digital communication system
US6307890B1 (en) * 1999-12-06 2001-10-23 Cue Corporation High density FM subcarrier modulation with standardized network layer
US6700926B1 (en) * 1999-12-10 2004-03-02 Nokia Corporation Method and apparatus providing bit-to-symbol mapping for space-time codes
CN1435011A (en) * 1999-12-10 2003-08-06 诺基亚有限公司 Method and apparatus providing bit-to-symbol mapping for space-time codes
US7574351B2 (en) * 1999-12-14 2009-08-11 Texas Instruments Incorporated Arranging CELP information of one frame in a second packet
EP1262027B1 (en) * 2000-02-07 2005-08-31 Ericsson Inc. Method of differential coding and modulation
EP1303917B1 (en) * 2000-07-17 2011-11-30 Koninklijke Philips Electronics N.V. Unequal error protection for packets with variable length
US7126930B2 (en) * 2001-02-10 2006-10-24 Qualcomm, Incorporated Method and apparatus for transmitting messages in a wireless communication system
JP3545726B2 (en) 2001-02-27 2004-07-21 松下電器産業株式会社 Receiver device
FI20010963A0 (en) * 2001-05-08 2001-05-08 Nokia Corp Adaptive Symbol Description in a Mobile System
JP3612563B2 (en) * 2001-09-07 2005-01-19 独立行政法人情報通信研究機構 Multi-mode block coding modulation demodulation method
TWI257085B (en) * 2002-01-21 2006-06-21 Koninkl Philips Electronics Nv Method of encoding and decoding
US6718504B1 (en) 2002-06-05 2004-04-06 Arc International Method and apparatus for implementing a data processor adapted for turbo decoding
JP4540962B2 (en) * 2003-10-10 2010-09-08 リンテック株式会社 Adhesive sheet and method for producing the same
US7613985B2 (en) * 2003-10-24 2009-11-03 Ikanos Communications, Inc. Hierarchical trellis coded modulation
KR100589680B1 (en) * 2004-07-26 2006-06-19 한국전자통신연구원 Sending method and sending apparatus, receiving method and receiving apparatus for signal of mobile telecommunication system
DE602005023068D1 (en) 2005-06-15 2010-09-30 Huawei Tech Co Ltd METHOD AND SYSTEM FOR ASSIGNING COMMUNICATION RESOURCES
JP4679345B2 (en) * 2005-11-17 2011-04-27 株式会社東芝 Error correction processing apparatus and error correction processing method
US8166379B1 (en) * 2006-11-03 2012-04-24 Marvell International Ltd. Calculating soft information from a multi-level modulation signal
US8265175B2 (en) 2007-06-05 2012-09-11 Constellation Designs, Inc. Methods and apparatuses for signaling with geometric constellations
US9191148B2 (en) 2007-06-05 2015-11-17 Constellation Designs, Inc. Methods and apparatuses for signaling with geometric constellations in a Raleigh fading channel
US7978777B2 (en) 2007-06-05 2011-07-12 Constellation Designs, Inc. Methodology and method and apparatus for signaling with capacity optimized constellations
JP4909824B2 (en) * 2007-06-29 2012-04-04 株式会社東芝 Error correction processing apparatus and error correction processing method
EP2096884A1 (en) 2008-02-29 2009-09-02 Koninklijke KPN N.V. Telecommunications network and method for time-based network access
US9047203B1 (en) * 2011-12-21 2015-06-02 Altera Corporation Systems and methods for encoding and decoding data
US8954832B1 (en) * 2012-09-05 2015-02-10 L-3 Communications Corp. Asymmetric distance coding
EP3097695B1 (en) * 2014-01-26 2019-09-11 LG Electronics Inc. Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
EP3223446A1 (en) * 2016-03-22 2017-09-27 Xieon Networks S.à r.l. A method for protecting a link in an optical network
JP7004503B2 (en) * 2017-01-27 2022-01-21 ラピスセミコンダクタ株式会社 Automatic gain control circuit (AGC), despreading circuit and method of reproducing received data

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882733A (en) * 1987-03-13 1989-11-21 Ford Aerospace Corporation Method and apparatus for combining encoding and modulation
JPH02291744A (en) * 1989-05-02 1990-12-03 Nec Corp Encoding modulation system
JP2545991B2 (en) * 1989-08-10 1996-10-23 日本電気株式会社 Sub signal transmission method
US5105442A (en) * 1990-11-07 1992-04-14 At&T Bell Laboratories Coded modulation with unequal error protection
US5164963A (en) * 1990-11-07 1992-11-17 At&T Bell Laboratories Coding for digital transmission

Also Published As

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

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