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Robust decoding of variable-length encoded Markov sources using a three-dimensional trellis
University of Kiel. (Institute for Circuits and Systems Theory)ORCID iD: 0000-0001-9307-484X
University of Kiel. (Institute for Circuits and Systems Theory)
2003 (English)In: IEEE Communications Letters, ISSN 1089-7798, E-ISSN 1558-2558, Vol. 7, no 7, 320-322 p.Article in journal (Refereed) Published
Abstract [en]

In this letter, we present an improved index-based a-posteriori probability (APP) decoding approach for the error-resilient transmission of packetized variable-length encoded Markov sources. The proposed algorithm is based on a novel two-dimensional (2-D) state representation which leads to a three-dimensional trellis with unique state transitions. APP decoding on this trellis is realized by employing a 2-D version of the BCJR algorithm where all available source statistics can be fully exploited in the source decoder. For an additional use of channel codes the proposed approach leads to an increased error-correction performance compared to a one-dimensional state representation.

Place, publisher, year, edition, pages
2003. Vol. 7, no 7, 320-322 p.
Keyword [en]
iterative decoding, joint source-channel coding, residual source redundancy, variable-length codes (VLCs), codes
National Category
Engineering and Technology Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-22684ISI: 000184255200010OAI: oai:DiVA.org:kth-22684DiVA: diva2:341382
Note
QC 20100525 NR 20140804Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Thobaben, Ragnar

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