Full-Duplex Energy Harvesting-Based Cooperative NOMA Network

Abstract

The generation of wireless communication from 1G to 4G has witnessed a lot of transformation from a technology perspective. However, the rapid increase of devices in 5G and the next generation of communication requires a higher data rate with more connected devices and an energy-efficient technique. This piece of work investigates the performance analysis of communication between one source and two NOMA users. The NOMA users which are near to source (call it ) harvest energy from the source transmit power, which is further used to relay the information to the far user (). We design a full-duplex (FD) non-linear energy harvesting (EH)–based communication between a source and two NOMA users, where the source transmits a superposed composite signal to a nearby user . Using successive interference cancellation (SIC), decodes its own signal and retransmits it to the far user ; here, the power used by in forwarding is the harvested power from the source transmit power. adopts a hybrid mode of energy harvesting, that is, using a time switching relay (TSR), and power splitting relay (PSR) together. The effect of FD nature of is well studied in the result section. We properly model the NOMA users at a specific distance from the source. We analyze the outage probability of both the user (,), the outage probability of the system, and the system throughput. We further investigate the ergodic capacity of each user with closed-form expressions using Gaussian–Chebyshev expressions. Finally, the simulation result validates the obtained analytical expressions of outage probability and ergodic rates.