Performance Analysis of SWIPT Aided Satellite-terrestrial Cooperative Network

This paper proposes a simultaneous wireless information and power transfer (SWIPT) aided hybrid satellite-terrestrial cooperative network. In particular, an energy-constrained terrestrial user equipment harvests energy from the radio frequency (RF) signal of the terrestrial relay and utilizes the harvested energy to cooperate with a masked terrestrial user equipment. The satellite-relay and satellite-user equipments links are assumed to undergo the Shadowed-Rician (SR) fading, and the channels of terrestrial links are assumed to undergo Rayleigh fading. By assuming that amplify-and-forward (AF) protocol is employed at the terrestrial relay and the energy-constrained terrestrial user equipment, we first derive the probability density function (PDF) expression and cumulative distribution function (CDF) expression for the signal to noise ratios (SNRs) at the energy-constrained terrestrial user equipment and the masked terrestrial user equipment. Then, we derive the outage probablity (OP) expressions of the two user equipments in the proposed network. Finally, theoretical analyses and Monte Carlo simulation results are presented. Our results reveal the impact of system parameters on the performance gains.