Joint transceiver designs for full-duplex MIMO SWIPT systems based on MSE criterion

For the simultaneous wireless information and power transfer (SWIPT), the full-duplex MIMO system can achieve simultaneous transmission of information and energy more efficiently than the half-duplex. Based on the mean-square-error (MSE) criterion, the optimization problem of joint transceiver design with transmitting power constraint and energy harvesting constraint is formulated. Next, by semidefinite relaxation (SDR) and randomization method, the SDR-based scheme is proposed. In order to reduce the complexity, the closed-form scheme is presented with some simplified measures. Robust beamforming is then studied considering the practical condition. The simulation results such as MSE versus signal-noise-ratio (SNR), MSE versus the iteration number, well prove the performance of the proposed schemes for the system model.