Energy-Efficient UAV Relaying Communications to Serve Ground Nodes
AffiliationUniv Arizona, Dept Elect & Comp Engn
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CitationS. 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.
JournalIEEE COMMUNICATIONS LETTERS
Rights© 2020 IEEE.
Collection InformationThis 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 email@example.com.
AbstractThis 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.
VersionFinal accepted manuscript