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Gaussian HDA coding with bandwidth expansion and side information at the decoder

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2 Author(s)
Erman Köken ; University of California, Riverside, CA ; Ertem Tuncel

Lossy transmission of a Gaussian source over an additive white Gaussian (AWGN) channel with side information at the decoder is tackled under the regime of bandwidth expansion. A previously known scheme, hybrid digital/analog Wyner-Ziv (HDA-WZ) coding is shown to remain optimal when extended from the bandwidth matched case to the bandwidth expansion case. The extended scheme also exhibits similar robustness properties under mismatched side information and/or channel quality. Finally, under the criterion of min-max distortion loss, the extended HDA-WZ scheme is shown to outperform a purely-digital scheme known as the common description scheme (CDS).

Published in:

Information Theory Proceedings (ISIT), 2013 IEEE International Symposium on

Date of Conference:

7-12 July 2013