Performance Analysis of SWIPT aided Integrated Remote Wireless Sensor and Satellite Network

Abstract

In this paper, we propose a simultaneous wireless information and power transfer (SWIPT) aided integrated remote wireless sensor and satellite network. In particular, a terrestrial wireless sensor network (WSN) harvests energy from the radio frequency (RF) signal of an amplify-and-forward (AF) terrestrial relay and utilizes the harvested energy to transmit data to a satellite with the assistance of the relay. The satellite-relay link is assumed to undergo the Shadowed-Rician fading, and the channels between the sensor nodes and the terrestrial relay links are assumed to undergo Nakagami-m fading. By assuming that the energy harvesting (EH) technology is employed at the sensor nodes of the WSN and the AF protocol is employed at the terrestrial relay, we first derive the expressions for the probability density function (PDF) and cumulative distribution function (CDF) of the signal to interference noise ratios (SINRs) for the sensor nodes at the relay and the satellite. Then, we derive the outage probability (OP) expressions of the sensor nodes at the relay and the satellite. Finally, average end-to-end throughput and energy efficiency expressions of the proposed network are derived. Theoretical analyses and Monte Carlo simulation results are presented to reveal the impact of system parameters on the performance gains.