Performance Analysis of SWIPT Relay Systems Over Nakagami-m Fading Channels with Non-linear Energy Harvester and Hybrid Protocol

Performance analysis in simultaneous wireless information and power transmission (SWIPT) relay networks depends critically on the accuracies of the deployed energy harvesting (EH) and channel fading models. In this paper, we consider non-linear energy harvesting and Nakagami-m fading schemes, representing more general and realistic features to achieve this goal. We also focus on amplify-and-forward (AF) EH relaying and adopt hybrid EH protocol which can be considered as a combination of time-switching (TS) and power-splitting (PS) protocols. We obtain the outage probability and throughput for this system and compute the optimal values for TS and PS ratios that maximizes the system throughput.