Publications-Detail

Iterative Source-Channel Decoding with Code Rates near r = 1

Authors:
Adrat, M.Vary, P.
Book Title:
Proceedings of IEEE International Conference on Communications (ICC)
Volume:
2
Pages:
p.p. 877 - 880
Address:
Paris, France
Date:
Jun. 2004
Language:
English

Abstract

We propose a specific channel encoder to support error concealment of mutually independent source codec parameters. To introduce artificial dependencies a recursive non-systematic convolutional (RNSC) code is applied which exhibits a code rate near r = 1. The channel encoder may be considered as a smearing filter. A TURBO-like exploitation of artificial dependencies and of residual source redundancy according to the iterative source-channel decoding (ISCD) algorithm permits step-wise quality improvements. Previously known error concealment techniques are outperformed in the most interesting range of channel conditions.

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