Combining FEC and optimal soft-input source decoding for the reliable transmission of correlated variable-length encoded signals

J. Kliewer, R. Thobaben

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

19 Scopus citations

Abstract

We utilize both the implicit residual source correlation and the explicit redundancy from a forward error correction (FEC) scheme for the error protection of packetized variable-length encoded source indices. The implicit source correlation is exploited in a novel symbol-based soft-input a-posteriori probability (APP) decoder, which leads to an optimal decoding process in combination with a mean-squares or maximum a-posteriori probability estimation of the reconstructed source signal. When, additionally, the variable-length encoded source data is protected by channel codes, an iterative source-channel decoder can be obtained in the same way as for serially concatenated codes, where the outer constituent decoder is replaced by the proposed APP source decoder. Simulation results show that, by additionally considering the correlations between the variable-length encoded source indices, the error-correction performance can be highly increased.

Original languageEnglish (US)
Title of host publicationProceedings - DCC 2002
Subtitle of host publicationData Compression Conference
EditorsJames A. Storer, Martin Cohn
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages83-91
Number of pages9
ISBN (Electronic)0769514774
DOIs
StatePublished - Jan 1 2002
Externally publishedYes
EventData Compression Conference, DCC 2002 - Snowbird, United States
Duration: Apr 2 2002Apr 4 2002

Publication series

NameData Compression Conference Proceedings
Volume2002-January

Other

OtherData Compression Conference, DCC 2002
Country/TerritoryUnited States
CitySnowbird
Period4/2/024/4/02

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Keywords

  • Circuits and systems
  • Forward error correction
  • Iterative decoding
  • Maximum a posteriori estimation
  • Protection
  • Quantization
  • Reactive power
  • Redundancy
  • Reliability theory
  • Streaming media

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