Self-energised UAV-assisted wireless communication using NOMA over Nakagami-m fading channel

In a cooperative relay network, replacing the relay with an unmanned aerial vehicle (UAV) offers several advantages. In this work, a UAV-assisted communication network based on non orthogonal multiple access (NOMA) system that incorporates simultaneous wireless information and power transfer (SWIPT) technique is investigated. The performance of the proposed system is analysed by deriving the closed form expression for performance metrics like outage probability (OP), throughput and bit error rate (BER) under imperfect successive interference cancellation (SIC) with selection combining (SC) diversity technique at the receiver. In addition to that, a Multiple UAV based system model is considered with relay selection algorithms like max-min selection and the variation in the outage probability performance is also studied. The analytical expressions are also validated using Monte Carlo simulation. The results show that the proposed system has better performance even under imperfect SIC and reduces the wastage of resources.