Energy-Efficient UAV Relaying Communications to Serve Ground Nodes
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Final Accepted Manuscript
Affiliation
Univ Arizona, Dept Elect & Comp EngnIssue Date
2020-04
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S. Ahmed, M. Z. Chowdhury and Y. M. Jang, "Energy-Efficient UAV Relaying Communications to Serve Ground Nodes," in IEEE Communications Letters, vol. 24, no. 4, pp. 849-852, April 2020, doi: 10.1109/LCOMM.2020.2965120.Journal
IEEE COMMUNICATIONS LETTERSRights
© 2020 IEEE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
This letter studies the energy-efficient unmanned aerial vehicle (UAV) communications to support ground nodes (GNs). The system considers the UAV working as a relay while there is a base station (BS) on the ground. We analyze the UAV energy consumption model to design the energy-efficient UAV trajectory path. We formulate the energy-efficient UAV relaying communication, which considers both throughput and UAV propulsion energy consumption. We optimize joint transmit power of UAV and BS; UAV trajectory, acceleration, and flying speed to maximize the energy-efficient UAV relaying problem. We also introduce a constraint named as information causality constraint (ICC). The main idea of ICC is to guarantee that the UAV receives information from BS in any time slot and forward the only received information to GNs in remaining time slots. The formulated energy-efficiency maximization problem is not convex. Thus, we solve it sub-optimally using the iterative method. Finally, we present the simulation results to validate the efficacy of the proposed algorithm.ISSN
1089-7798EISSN
2373-7891Version
Final accepted manuscriptae974a485f413a2113503eed53cd6c53
10.1109/lcomm.2020.2965120