NDLI: Embedded cross-decoding scheme for multiple description based distributed source coding

Content Provider	IEEE Xplore Digital Library
Author	Ceulemans, B. Satti, S.M. Deligiannis, N. Verbist, F. Munteanu, A.
Copyright Year	2014
Description	Author affiliation: Dept. of Electron. & Inf., Vrije Univ. Brussel, Brussels, Belgium (Ceulemans, B.; Satti, S.M.; Deligiannis, N.; Verbist, F.; Munteanu, A.)
Abstract	Using multiple description (MD) coding mechanisms, this paper proposes a novel coding framework for error-resilience in distributed source coding (DSC) in sensor networks. In particular, scalable source descriptions are first generated using a symmetric scalable MD scalar quantizer. These descriptions are then layered Wyner-Ziv (WZ) coded using low-density parity-check accumulate (LDPCA) -based syndrome binning. The decoder consists of two side decoders which attempt to iteratively decode their respective description at various LDPCA puncturing rates in the presence of a correlated side information. A central decoder exploits the inter-description correlation to further enhance the WZ rate-distortion performance when both descriptions are partially or fully received. In contrast to earlier work, our proposed decoding scheme also exploits the correlation that exists between bit-planes. Experimental simulations reveal that, for a Gaussian source, the proposed system yields a performance improvement of roughly 0.66 dB when compared to not exploiting inter-description correlations.
Starting Page	835
Ending Page	839
File Size	312980
Page Count	5
File Format	PDF
ISBN	9780992862619
ISSN	20761465
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-01
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	EURASIP
Subject Keyword	Layered Wyner-Ziv coding Correlation Multiple description coding Source coding Cross-decoding Iterative decoding Signal to noise ratio Maximum likelihood decoding Distributed source coding
Content Type	Text
Resource Type	Article

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