On Optimal Distributed Joint Source-Channel Coding for Correlated Gaussian Sources over Gaussian Channels

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dc.creatorRajesh, R
dc.creatorSharma, Vinod
dc.date2009-05-14
dc.date.accessioned2026-07-07T13:14:59Z
dc.date.available2026-07-07T13:14:59Z
dc.descriptionWe consider the problem of distributed joint source-channel coding of correlated Gaussian sources over a Gaussian Multiple Access Channel (GMAC). There may be side information at the decoder and/or at the encoders. First we specialize a general result (for transmission of correlated sources over a MAC with side information) to obtain sufficient conditions for reliable transmission over a Gaussian MAC. This system does not satisfy the source-channel separation. We study and compare three joint source-channel coding schemes available in literature. We show that each of these schemes is optimal under different scenarios. One of the schemes, Amplify and Forward (AF) which simplifies the design of encoders and the decoder, is optimal at low SNR but not at high SNR. Another scheme is asymptotically optimal at high SNR. The third coding scheme is optimal for orthogonal Gaussian channels. We also show that AF is close to the optimal scheme for orthogonal channels even at high SNR.
dc.description24 pages, 9 figures submitted to IEEE Trans Wireless commn
dc.identifierhttps://arxiv.org/abs/0905.2297
dc.identifierhttp://arxiv.org/abs/0905.2297
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/230354
dc.subjectInformation Theory
dc.titleOn Optimal Distributed Joint Source-Channel Coding for Correlated Gaussian Sources over Gaussian Channels
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