BIDIRECTIONAL RELAYING USING INTERFERENCE CANCELLATION

摘要

Bidirectional communication between two nodes is made possible by a half-duplex relay node in a multiple access and broadcast phase. We optimize the time-division between the two phases and give a complete characterization of the convex achievable rate region. This allows us to derive a relay selection criteria and to present a throughput optimal rate allocation policy for a cross-layer design. Furthermore, if the relay additionally multicasts a common message, we can improve the resource utilization by joint processing of two routing tasks.