Secrecy Information and Energy Transmission Optimization of SWIPT System

This paper studies the Semidefinite Relaxation (SDR) pre-coding technique and applies it into The Simultaneous Wireless Information and Power Transfer (SWIPT) system to maximize the energy transmission with a certain secrecy channel capacity. In this paper, the single source SWIPT model and dual source SWIPT model are introduced and compared. The simulation results demonstrate that in the SWIPT eavesdropping model, SDR pre-coding algorithm works well to optimize the energy transmission. What’s more, the dual source SWIPT model performance better than the single source SWIPT model in power transmitting.