Joint Self-Interference Mitigation and Physical-Layer Security Enhancement for Full Duplex Communications

In this paper, we design transmit beamforming for a full-duplex base station (FD-BS) considering joint self-interference mitigation and physical-layer security enhancement. The proposed designs are formulated to minimize the power consumption of FD-BS, under different signal- to-interference-and-noise-ratio (SINR) constraints. We strictly prove the optimality of SDR by showing the existence of rank-one solutions. Simulation results are provided to demonstrate the efficiency of the proposed algorithms.