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Error Resilient Turbo Compression of Source Codec Parameters Using Inner Irregular Codes

Authors:
Schmalen, L.Vary, P.
Book Title:
Proceedings of International ITG Conference on Source and Channel Coding (SCC)
Organization:
Informationstechnische Gesellschaft (ITG)
Publisher:
VDE Verlag GmbH
Address:
Siegen, Germany
Date:
Jan. 2010
ISBN:
978-3-80073-211-1
ISSN:
0932-6022
Language:
English

Abstract

In this paper, we present a novel near-lossless compression scheme for scalar quantized source codec parameters. The scheme is comparable to a Turbo source coding approach and can inherently incorporate protection against transmission errors. We show that using the concept of EXIT charts and inner irregular convolutional codes of rate >1, a linear programming optimization problem can be formulated resulting in the minimization of the transmitted number of bits given a certain channel quality. The solution of this problem leads to an irregular inner code offering the best possible compression. The advantage of this method in comparison to a previous proposal is the easy adaptability to varying source conditions.

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