Abstract
To reduce hardware complexity of multiple-input multiple-output system with the simultaneous wireless information and power transfer scheme, we propose joint transmission and antenna subarray formation (ASF) receiving optimization scheme which maximizes the achievable rate under the transmit power constraint and the energy harvesting constraint. By relaxing the constraint that ASF matrix should contain limited number of nonzero elements, we employ alternating optimization method to alternatively optimize the transmit covariance matrix and the ASF matrix. We also propose the capacity-loss-based and maximum absolute values algorithms to recover the above constraint on the ASF matrix. It is shown from the simulation results that the proposed schemes outperform the conventional antenna selection scheme.