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arXiv · 1111.3395

The Capacity of a Class of Multi-Way Relay Channels

Lawrence Ong·Sarah J. Johnson·Christopher M. Kellett
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Abstract

The capacity of a class of multi-way relay channels, where L users communicate via a relay (at possibly different rates), is derived for the case where the channel outputs are modular sums of the channel inputs and the receiver noise. The cut-set upper bound to the capacity is shown to be achievable. More specifically, the capacity is achieved using (i) rate splitting, (ii) functional-decode-forward, and (iii) joint source-channel coding. We note that while separate source-channel coding can achieve the common-rate capacity, joint source-channel coding is used to achieve the capacity for the general case where the users are transmitting at different rates.

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Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett. 2011-11-15. The Capacity of a Class of Multi-Way Relay Channels. https://doi.org/10.1109/iccs.2010.5686491

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