A Novel Trajectory Design Approach for UAV Based on Finite Fourier Series

In this letter, we focus on the trajectory design problem in wireless communications aided by unmanned aerial vehicles (UAVs), where a UAV serves multiple ground users for wireless transmission, to maximize the minimum transmission rate for all the ground users. A novel approach based on finite Fourier series (FFS) is proposed to reconstruct the trajectory with harmonics. Simulation results show that the FFS-based approach achieves similar max-min rate performance compared to the prevailing approach based on discrete waypoints (DW) while it is significantly less time-consuming due to a reduced number of variables.