On the Outage Performance of Dual-Hop UAV Relaying with Multiple Sources

This paper investigates the outage performance of an unmanned aerial vehicle (UAV) relaying system with decode-and-forward (DF) protocol, where multiple sources access the destination via UAV. By assuming that the destination is corrupted by multiple co-channel interferers, we first obtain the end-to-end signal-to-noise ratio (SNR) expression. Then, based on the SNR expression, we derive the closed-form expression of the outage probability (OP) for the UAV relaying system, where both of the uplink and downlink channels undergo Nakagami-m fading while the interference channels experience Rayleigh fading. Finally, numerical results are given to demonstrate the effectiveness of the performance analysis, and reveal the impacts of UAV antenna numbers and co-channel interferer on the system performance.