Resource Allocation for Wireless Multi-Carrier Network with Receiver Cooperation

A receiver-cooperative scheme which divides the four-node cooperative system into two orthogonal sub-channels is considered. In each sub-channel, the system becomes a multipleaccess channel with multiple subcarriers. Our goal is to allocate subcarriers, power, and rate in a way that the sum rate is maximized. We propose two resource allocation strategies: time-sharing relaxation and heuristic subcarrier allocation with optimal power. We also give an upper bound for the sum rate achievable by our cooperative scheme. We compare the performance of our two proposed strategies with two other simple benchmarks in terms of sum rate and computation time. Simulation results shows the tradeoff between these two factors.