Robust secure transmission scheme in MISO interference channel with simultaneous wireless information and power transfer

Abstract

Considering simultaneous wireless information and power transfer (SWIPT), we investigate robust secure transmission scheme in two-user multiple-input-single-output interference channels, where channel uncertainties are modeled by worst-case model. Our objective is to maximize the worst-case sum secrecy rate under individual transmit power constraints and worst-case energy harvest (EH) constraints. We propose an alternative optimization (AO) based algorithm to solve the robust secure transmission problem, and we can obtain a closed form solution in the process of AO algorithm. Simulation results demonstrate that our proposed robust secure transmission scheme has significant performance gain over the non-robust one.