On iterative source-channel decoding for variable-length encoded Markov sources using a bit-level trellis

Ragnar Thobaben, Jörg Kliewer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

In this paper we present a novel bit-level soft-input/softoutput decoding algorithm for variable-length encoded packetized Markov sources transmitted over wireless channels. An interesting feature of the proposed approach is that symbol-based source statistics in form of transition probabilities of the Markov source are exploited as a-priori information on a bit-level trellis. When additionally the variable-length encoded source data is protected by channel codes, an iterative source-channel decoding scheme can be obtained in the same way as for serially concatenated codes. Based on an extrinsic information transfer chart analysis of the iterative decoder computer simulations show for an AWGN channel that by using reversible variable-length codes with free distance greater than one in combination with rate-1 channel codes a reliable transmission is possible even for highly corrupted channels.

Original languageEnglish (US)
Title of host publication2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages50-54
Number of pages5
ISBN (Electronic)078037858X
DOIs
StatePublished - Jan 1 2004
Externally publishedYes
Event4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 - Rome, Italy
Duration: Jun 15 2003Jun 18 2003

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume2004-January

Other

Other4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
CountryItaly
CityRome
Period6/15/036/18/03

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

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