Two-way relay beamforming optimization for full-duplex SWIPT systems

TL;DR

This paper presents an iterative algorithm for optimizing beamforming and power splitting in full-duplex MIMO SWIPT systems to maximize sum-rate, demonstrating improved performance through simulations.

Contribution

It introduces a novel iterative DC programming-based method for joint relay beamforming and power splitting optimization in FD MIMO SWIPT systems.

Findings

The proposed algorithm effectively maximizes sum-rate.

Simulation results confirm the algorithm's efficiency.

Joint optimization outperforms separate designs.

Abstract

In this paper, we investigate the problem of two-way relay beamforming optimization to maximize the achievable sum-rate of a simultaneous wireless information and power transfer (SWIPT) system with a full-duplex (FD) multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay. In particular, we address the optimal joint design of the receiver power splitting (PS) ratio and the beamforming matrix at the relay node given the channel state information (CSI). Our contribution is an iterative algorithm based on difference of convex (DC) programming and one-dimensional searching to achieve the joint optimal solution. Simulation results are provided to demonstrate the effectiveness of the proposed algorithm.