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We study a wireless broadcast network, where a single source reliably communicates independent messages to multiple destinations, with the aid of relays. We propose a scheme that can achieve rates within a constant gap away from the cut-set bound. The proposed scheme operates in two steps: the inner code induces a broadcast channel with sufficient mutual information between the source and the destinations,...
In this paper, we study the achievable rate regions of parallel relay broadcast channels. We present two system models, the parallel unshared-relay broadcast channel and the parallel shared-relay broadcast channel. In the first system, each relay node is peculiar to one of the users and does not assist any other user. In the second system, each relay node is shared by all users and assists all of...
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