Energy-Efficient Video Streaming with Fixed-Wing UAV

Fixed-wing unmanned aerial vehicle (UAV) communication is a promising paradigm for providing mobile video services to ground users (GUs) without the need of infrastructure. However, the performance of fixed-wing UAV video streaming is severely limited by the onboard energy while energy-efficient fixed-wing UAV video streaming has not been fully explored. In this paper, we study energy-efficient video streaming with a fixed-wing UAV for provisioning mobile video streaming services to multiple GUs. We define UAV's energy efficiency as the ratio of perceived video quality at all GUs to the UAV's energy consumption and formulate an energy efficiency maximization problem that jointly optimizes the communication time allocation among GUs and the UAV's trajectory. Due to the non-convex nature of the formulated problem, we propose a near-optimal iterative algorithm, which utilizes successive convex approximation and quadratic transform techniques to address the problem efficiently. Extensive simulations demonstrate the high efficiency and effectiveness of our proposed algorithm.