Robust transmission of variable-length encoded Markov sources using rate-1 channel coding and efficient iterative source-channel decoding

Ragnar Thobaben, Jörg Kliewer

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

Abstract

In this paper we present a novel low complexity bit-level soft-input/soft-output decoding approach for variable-length encoded packetized Markov sources transmitted over noisy communication channels. This approach has the advantage that all available residual source redundancy in form of transition probabilities of the Markov source can be exploited as additional a-priori information in the decoding process. When explicit redundancy from channel codes is additionally added to the interleaved variable-length encoded bit sequence, decoding can be carried out with an iterative source-channel decoding scheme. Furthermore, for reversible variable-length codes, which provide additional explicit source redundancy, good matching rate-1 channel codes are determined via an extrinsic information transfer chart analysis of the iterative decoder such that a robust transmission is possible even for channels with low signal-to-noise ratio.

Original languageEnglish (US)
Title of host publication2004 12th European Signal Processing Conference, EUSIPCO 2004
PublisherEuropean Signal Processing Conference, EUSIPCO
Pages1745-1748
Number of pages4
ISBN (Electronic)9783200001657
StatePublished - Apr 3 2015
Externally publishedYes
Event12th European Signal Processing Conference, EUSIPCO 2004 - Vienna, Austria
Duration: Sep 6 2004Sep 10 2004

Publication series

NameEuropean Signal Processing Conference
Volume06-10-September-2004
ISSN (Print)2219-5491

Other

Other12th European Signal Processing Conference, EUSIPCO 2004
CountryAustria
CityVienna
Period9/6/049/10/04

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering

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