Joint Transceiver Design for Network-Assisted Full-Duplex Systems With SWIPT

Abstract

In this article, the problem of joint transceiver design for network-assisted full-duplex (NAFD) systems under cell-free massive multiple-input multiple-output (MIMO) network with simultaneous wireless information and power transfer is investigated. The uplink users’ transmit power, the uplink and downlink beamforming vectors, the fronthaul compression ratio, and the power-splitting ratio are jointly optimized to minimize the total transmission power under the constraints of signal-to-noise ratio, quality of service (QoS), energy harvesting, fronthaul capacity and transmit power of users, and remote antenna units. Applying the block-coordinate-descent method and the successive convex approximation, an algorithm is proposed to handle the nonconvex optimization problem. Finally, the simulation results validate the effectiveness of the proposed algorithm and show that NAFD systems can achieve lower transmission power than cloud radio access network co-frequency co-time full-duplex systems.