Wireless multicast with cooperative relaying

In this work, we model a random access multicast network with cooperative relaying and analyze its throughput. The network consists of two source nodes and two destination nodes, where both source nodes generate data that needs to be transmitted to both destination nodes. We study the possibility that one of the sources can also act as a cooperative relay by transmitting some of the packets originating at the other source node. It is assumed that the destination nodes are equipped with multiuser detectors, and hence are capable of successfully decoding transmissions from multiple source nodes simultaneously (multipacket reception). We derive the achievable service rates for packets originating at each node in a system with cooperative relaying, and thereby compute the overall throughput region. Further analysis of the system (stability region) is reserved for future work.