2020/07/20 by Hong Ren, Cunhua Pan, Ren, Hong +9 · 1 citation
Engineering · Computer Science · #UAV Applications and Optimization #Wireless Communication Security Techniques #Cooperative Communication and Network Coding
paper · pdf · doi:10.48550/arxiv.2007.09850
This letter considers an unmanned aerial vehicle (UAV)-enabled relay communication system for delivering latency-critical messages with ultra-high reliability, where the relay is operating under amplifier-and-forward (AF) mode. We aim to jointly optimize the UAV location and power to minimize decoding error probability while guaranteeing the latency constraints. Both the free-space channel model and three-dimensional (3-D) channel model are considered. For the first model, we propose a low-complexity iterative algorithm to solve the problem, while globally optimal solution is derived for the case when the signal-to-noise ratio (SNR) is extremely high. For the second model, we also propose a low-complexity iterative algorithm to solve the problem. Simulation results confirm the performance advantages of our proposed algorithms.