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• W4280513612 abstract "This paper studies a multiple unmanned aerial vehicle (UAV) relaying communication system, where multiple UAV relays assist the blocked communication between a group of ground users (GUs) and a base station (BS). Since the UAVs only have limited-energy in practice, our design aims to maximize the energy efficiency (EE) through jointly designing the communication scheduling, the transmit power allocation, as well as UAV trajectory under the buffer constraint over a given flight period. Actually, the formulated fractional optimization problem is difficult to be solved in general because of non-convexity. To resolve this difficulty, an efficient iterative algorithm is proposed based on the block coordinate descent (BCD) and successive convex approximation (SCA) techniques, as well as the Dinkel-bach's algorithm. Specifically, the optimization variables of the formulated problem are divided into three blocks and we alternately optimize each block of the variables over iteration. Numerical results verify the convergence of the proposed iterative algorithm and show that the proposed designs achieve significant EE gain, which outperform other benchmark schemes." @default.
• W4280513612 created "2022-05-22" @default.
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• W4280513612 date "2022-04-01" @default.
• W4280513612 modified "2023-10-14" @default.
• W4280513612 title "Energy efficiency maximization for buffer-aided multi-UAV relaying communications" @default.
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• W4280513612 doi "https://doi.org/10.23919/jsee.2022.000032" @default.
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