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Conference Papers Year : 2013

Universal Wyner-Ziv Coding for Gaussian Sources

Abstract

This paper considers the problem of lossy source coding with side information at the decoder only, for Gaussian sources, when the joint statistics of the sources are partly unknown. We propose a practical universal coding scheme based on scalar quantization and nonbinary LDPC codes, which avoids the binarization of the quantized coefficients. We first explain how to choose the rate and to construct the LDPC coding matrix. Then, a decoding algorithm that jointly estimates the source sequence and the joint statistics of the sources is proposed. The proposed coding scheme suffers no loss compared to the practical coding scheme with same rate but known variance.
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Dates and versions

hal-00819493 , version 1 (01-05-2013)

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Elsa Dupraz, Aline Roumy, Michel Kieffer. Universal Wyner-Ziv Coding for Gaussian Sources. ICASSP 2013 - 38th IEEE International Conference on Acoustics, Speech and Signal Processing, May 2013, Vancouver, Canada. pp.1-4, ⟨10.1109/icassp.2013.6638640⟩. ⟨hal-00819493⟩
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