A Polarization-Based Power-Splitting Full-Duplex Relaying Scheme Design for SWIPT System

In this paper, we propose a polarization-based power-splitting full-duplex relaying (PB-PS-FDR) scheme to improve the performance of simultaneous wireless information and power transfer (SWIPT) system. In this scheme, the relay can simultaneously perform energy harvesting and full-duplex information transmission all the time. Meanwhile, the relay can realize the self-energy recycling (S-ER) based on PS through receiving loopback interference signal with the specific polarization state. We also propose the method to solve the optimal PS factor and derive the corresponding closed-form expression. Simulation results show a significant capacity improvement achieved by our proposed design, compared with conventional power splitting relaying and time switching relaying schemes.