Joint Trajectory and Communication Design for UAV-Enabled Multiple Access
arXiv:1704.01765
Abstract
Unmanned aerial vehicles (UAVs) have attracted significant interest recently in wireless communication due to their high maneuverability, flexible deployment, and low cost. This paper studies a UAV-enabled wireless network where the UAV is employed as an aerial mobile base station (BS) to serve a group of users on the ground. To achieve fair performance among users, we maximize the minimum throughput over all ground users by jointly optimizing the multiuser communication scheduling and UAV trajectory over a finite horizon. The formulated problem is shown to be a mixed integer non-convex optimization problem that is difficult to solve in general. We thus propose an efficient iterative algorithm by applying the block coordinate descent and successive convex optimization techniques, which is guaranteed to converge to at least a locally optimal solution. To achieve fast convergence and stable throughput, we further propose a low-complexity initialization scheme for the UAV trajectory design based on the simple circular trajectory. Extensive simulation results are provided which show significant throughput gains of the proposed design as compared to other benchmark schemes.
arXiv commentSubmitted for possible publication
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Cited by in corpus (6)
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- Throughput Maximization for UAV-Enabled Wireless Powered Communication Networks
- Robust Trajectory and Transmit Power Design for Secure UAV Communications
- Energy Trade-off in Ground-to-UAV Communication via Trajectory Design
- UAV Data Collection over NOMA Backscatter Networks: UAV Altitude and Trajectory Optimization