Wireless Powered ALOHA Networks with UAV-Mounted-Base Stations
Hadzi-Velkov Z, Pejoski S, Schober R, Zlatanov N (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 9
Pages Range: 56-60
Article Number: 8839870
Journal Issue: 1
Abstract
In this letter, we study wireless powered communication networks (WPCNs) with base stations (BSs) mounted on unmanned aerial vehicles (UAVs). For implementation simplicity and uncoordinated access, the energy harvesting (EH) users (EHUs) employ slotted ALOHA to transmit information at a fixed rate to a common UAV-mounted BS. The UAV flying along a circular trajectory facilitates a line of sight (LoS) between the BS and each EHU, and also mitigates the adverse double near-far effect as it periodically comes close to the EHUs. Due to the periodicity of the LoS channels, the channel can be tracked without performing energy-costly channel estimation, and the channel attenuation can be compensated to avoid channel outages. For such a WPCN, we optimize the UAV radius, the channel access probability, and the rate of each EHU to enable proportionally fair resource allocation. Our solution reveals that, when a certain UAV altitude is exceeded, proportional fairness is attained when the UAV is in the hovering mode.
Authors with CRIS profile
Involved external institutions
Saints Cyril and Methodius University of Skopje / Универзитет „Св. Кирил и Методиј“ во Скопје
Republic of North Macedonia (MK)
Monash University
Australia (AU)
Republic of North Macedonia (MK)
Monash University
Australia (AU)
How to cite
APA:
Hadzi-Velkov, Z., Pejoski, S., Schober, R., & Zlatanov, N. (2020). Wireless Powered ALOHA Networks with UAV-Mounted-Base Stations. IEEE Wireless Communications Letters, 9(1), 56-60. https://doi.org/10.1109/LWC.2019.2941691
MLA:
Hadzi-Velkov, Zoran, et al. "Wireless Powered ALOHA Networks with UAV-Mounted-Base Stations." IEEE Wireless Communications Letters 9.1 (2020): 56-60.
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