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arXiv · 1605.09493

A Multiway Relay Channel with Balanced Sources

Lawrence Ong·Roy Timo
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Abstract

We consider a joint source-channel coding problem on a finite-field multiway relay channel, and we give closed-form lower and upper bounds on the optimal source-channel rate. These bounds are shown to be tight for all discrete memoryless sources in a certain class $\mathcal{P}^*$, and we demonstrate that strict source-channel separation is optimal within this class. We show how to test whether a given source belongs to $\mathcal{P}^*$, we give a balanced-information regularity condition for $\mathcal{P}^*$, and we express $\mathcal{P}^*$ in terms of conditional multiple-mutual informations. Finally, we show that $\mathcal{P}^*$ is useful for a centralised storage problem.

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Lawrence Ong, Roy Timo. 2016-05-31. A Multiway Relay Channel with Balanced Sources. https://doi.org/10.1109/tcomm.2015.2487272

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