Robust Transceiver Design for Full-Duplex MIMO Relay Systems

Abstract

This paper investigates multiuser full-duplex (FD) multiple-input multiple-output (MIMO) relay systems. We study joint design of the base station (BS) beamforming matrix and the relay station (RS) amplify-and-forward (AF) transformation matrix to maximize the system sum rate with only imperfect channel state information (CSI) at the RS. To deal with highly coupled design variables in the objective function and constraints in the optimization problem, we develop a novel algorithm based on the penalty dual decomposition (PDD) algorithmic framework. Simulation results are provided to demonstrate the effectiveness of the proposed algorithm.