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In this paper, we study the capacity of the diamond channel. We focus on the special case where the channel between the source node and the two relay nodes are two separate links with finite capacities and the link from the two relay nodes to the destination node is a Gaussian multiple access channel. We call this model the Gaussian multiple access diamond channel. We first propose an upper bound...
In this paper, we study the multiple access diamond channel, where each relay has cached a part of the message intended for the destination node. It is assumed that the cached information at the two relays are independent. We propose an achievability scheme and show that the scheme of sending correlated codewords through the multiple access channel with the superposition structure proposed for the...
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