Communicating Over Filter-and-Forward Relay Networks With Channel Output Feedback

摘要: Relay networks aid in increasing the rate of communication from source to destination. However, capacity even a three-terminal relay channel is an open problem. In this paper, we propose new lower bound for with destination-to-source feedback presence noise memory. Our improves on existing bounds literature. We then extend our general network configurations using arbitrary number filter-and-forward nodes. Such are common many multihop systems where intermediate nodes can only perform minimal processing due limited computational power. Simulation results show that significant improvements achievable be obtained through approach. next derive coding strategy (optimized post processed signal-to-noise ratio as criterion) noisy output two transmissions. This scheme used conjunction open-loop codes applications like automatic repeat request (ARQ) or hybrid-ARQ.