Joint source-channel list sequence decoding

Carl Fredrik Leanderson, C.-E.W. Sundberg

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearchpeer-review

Abstract

We evaluate the performance of list sequence (LS) maximum a posteriori probability (MAP) decoding on the additive white Gaussian noise (AWGN) channel and the fully interleaved flat Rayleigh fading channel. In particular, we focus on the frame error rate (FER) of LS-MAP decoding with genie-assisted error detection. It is demonstrated that LS-MAP decoding yields significant performance improvements relative to single sequence MAP decoding on the AWGN channel as well as the fully interleaved flat Rayleigh fading channel. Furthermore, feedback convolutional codes have been observed to have the potential to yield improved FER performance with both single sequence MAP and IS-MAP decoding, compared to feedforward convolutional codes. Based on these performance improvements, we propose a joint source-channel IS decoding scheme. The scheme is based on the max-log list algorithm for simultaneous soft symbol and IS decoding of convolutional codes. In existing systems where a cyclic redundancy check for error mitigation is concatenated with a convolutional code for error correction, this scheme can be implemented in a fully backward compatible receiver
Original languageEnglish
Title of host publication13th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2002. Proceedings (Cat. No.02TH8637)
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages951-955
ISBN (Print)0-7803-7589-0
DOIs
Publication statusPublished - 2002
EventIEEE International Symposium on Personal Indoor and Mobile Radio Communications PIMRC, 2002 - Pavilhao Altantico, Lisboa, Portugal
Duration: 2002 Sep 152002 Sep 18
Conference number: 13

Conference

ConferenceIEEE International Symposium on Personal Indoor and Mobile Radio Communications PIMRC, 2002
Country/TerritoryPortugal
CityPavilhao Altantico, Lisboa
Period2002/09/152002/09/18

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • feedback convolutional codes
  • flat Rayleigh fading channel
  • single sequence MAP decoding
  • genie-assisted error detection
  • LS-MAP decoding
  • frame error rate
  • AWGN channel
  • additive white Gaussian noise channel
  • MAP decoding
  • maximum a posteriori probability decoding
  • joint source-channel list sequence decoding
  • performance evaluation
  • feedforward convolutional codes
  • joint source-channel LS decoding
  • cyclic redundancy check
  • concatenated code
  • error correction
  • backward compatible receiver

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