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arXiv · 1702.02330

A New Achievable Rate Region for Multiple-Access Channel with States

Mohsen Heidari·Farhad Shirani·S. Sandeep Pradhan
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Abstract

The problem of reliable communication over the multiple-access channel (MAC) with states is investigated. We propose a new coding scheme for this problem which uses quasi-group codes (QGC). We derive a new computable single-letter characterization of the achievable rate region. As an example, we investigate the problem of doubly-dirty MAC with modulo-$4$ addition. It is shown that the sum-rate $R_1+R_2=1$ bits per channel use is achievable using the new scheme. Whereas, the natural extension of the Gel'fand-Pinsker scheme, sum-rates greater than $0.32$ are not achievable.

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Mohsen Heidari, Farhad Shirani, S. Sandeep Pradhan. 2017-02-08. A New Achievable Rate Region for Multiple-Access Channel with States. https://arxiv.org/abs/1702.02330

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