Energy Beamforming for Full-Duplex Wireless Powered Cooperative Communications

In this paper, we consider a full-duplex wireless powered cooperative communication network, where a source communicates with a destination via a decode-and-forward relay in a full-duplex mode. The source and relay harvest energy from the signal transmitted by a power beacon. We formulate an optimization problem to maximize the achievable rate under the transmit power constraint of the power beacon. We find an optimal energy beamforming scheme by solving the optimization problem. Moreover, we obtain a suboptimal solution with lower computational complexity. Simulation results show that the suboptimal scheme suffers little performance degradation compared with the optimal scheme.