NDLI: Distributed Coding of Gaussian Correlated Sources Using Non-binary LDPC

Content Provider	IEEE Xplore Digital Library
Author	Wang, Zunliang Li, Xueming Zhao, Min
Copyright Year	2008
Abstract	Distributed coding is a new paradigm for compressing correlated distributed sources, based on Slepian-Wolf and Wyner-Ziv theorem. This scheme is appropriate for wireless sensor network and distributed video coding. In this paper, we address the problem of coding two Gaussian correlated non-binary sources with one of which is only available at the decoder using the non-binary low-density parity-check (LDPC) codes. The proposed approach is based on the extension of the channel coding concept of syndrome. The correlation between the sources is modeled as a virtual additive Gaussian backward channel. The use of non-binary LDPC codes in the proposed system makes coding without converting non-binary sources to binary bits feasible, and thus it overcomes the reduction in correlation caused by conversion. Experiments show that the proposed system achieves a good performance over GF(4) and GF(8), which enables us to reasonably conclude that the considered scheme is extremely suitable for distributed coding of correlated non-binary sources.
Starting Page	214
Ending Page	218
File Size	397045
Page Count	5
File Format	PDF
ISBN	9780769531199
DOI	10.1109/CISP.2008.35
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-27
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Video coding AWGN Source coding Channel coding Iterative decoding non-binary LDPC Distributed source coding Wireless sensor networks Image coding Wyner-Ziv coding Signal processing Parity check codes Binary sequences
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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