Joint Location, Bandwidth and Power Optimization for THz-Enabled UAV Communications

In this letter, the problem of unmanned aerial vehicle (UAV) deployment, power allocation, and bandwidth allocation is investigated for a UAV-assisted wireless system operating at terahertz (THz) frequencies. studied model, one UAV can service ground users using THz frequency band. However, highly uncertain channel will introduce new challenges to location, user power, optimization problems. Therefore, it necessary design novel framework deploy UAVs in systems. This formally posed as an whose goal minimize total delays uplink downlink transmissions between by jointly optimizing deployment UAV, transmit each user. The communication delay crucial emergency communications. To tackle nonconvex minimization problem, alternating algorithm proposed while iteratively solving three subproblems: location subproblem, control subproblem. Simulation results show that reduce transmission up 59.3%, 49.8% 75.5% respectively compared baseline algorithms optimize only or control.