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- W2950373453 abstract "In this correspondence paper, we focus on a cellular network aided an unmanned aerial vehicle (UAV) that serves as an aerial base station for multiple ground users. The UAV's trajectory design is investigated to maximize the expected uplink sum rate with inaccessibility to user-side information, such as locations and transmit power as well as channel parameters. The problem is formulated as a Markov decision process and solved with model-free reinforcement learning. Due to the continuous and deterministic action space, the deterministic policy gradient (DPG) algorithm is applied for the reinforcement learning model. Experiment results show that due to the great generalizability of the reinforcement learning model, the UAV is able to intelligently track the ground users with the learned trajectory despite being unaware of the user-side information and channel parameters, even when the ground users are mobile. The performance of the learned trajectory is fairly close to that of the optimized trajectory derived through conventional optimization problem solving with such information explicitly known. Moreover, we also show that the DPG algorithm converges efficiently with acceptable training time." @default.
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- W2950373453 date "2019-08-01" @default.
- W2950373453 modified "2023-10-13" @default.
- W2950373453 title "Intelligent Trajectory Design in UAV-Aided Communications With Reinforcement Learning" @default.
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- W2950373453 doi "https://doi.org/10.1109/tvt.2019.2923214" @default.
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