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Instantaneous Relaying for the 3-Way Relay Channel with Circular Message Exchanges (1511.07338v1)
Published 23 Nov 2015 in cs.IT and math.IT
Abstract: The 3-user discrete memoryless multi-way relay channel with circular message exchange and instantaneous relaying is investigated. We first show that this channel is effectively a 3-user interference channel with receiver message side information for every fixed (and instantaneous) relay mapping. Then, we extend the Han-Kobayashi coding scheme to this channel. Finally, we apply these results to Gaussian channels with amplify-and-forward relaying and present numerical results showing the gain of the proposed scheme compared to the state of the art.