Joint Transmit Power and Placement Optimization for URLLC-enabled UAV Relay Systems

Ren, Hong, Pan, Cunhua, Wang, Kezhi, Xu, Wei, Elkashlan, Maged and Nallanathan, Arumugam (2020) Joint Transmit Power and Placement Optimization for URLLC-enabled UAV Relay Systems. IEEE Transactions on Vehicular Technology. pp. 1-6. ISSN 0018-9545 (In Press)

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Joint Transmit Power and Placement Optimization for URLLC-enabled UAV Relay Systems.pdf - Accepted Version

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Official URL: https://doi.org/10.1109/TVT.2020.2992736

Abstract

This letter considers a unmanned aerial vehicle (UAV)-enabled relay communication system for delivering latency-critical messages with ultra-high reliability, where the relay is operating under amplifier-and-forward (AF) mode. We aim to jointly optimize the UAV location and power to minimize decoding error probability while guaranteeing the latency constraints. Both the free-space channel model and three-dimensional (3-D) channel model are considered. For the first model, we propose a low-complexity iterative algorithm to solve the problem, while globally optimal solution is derived for the case when the signal-to-noise ratio (SNR) is extremely high. For the second model, we also propose a low-complexity iterative algorithm to solve the problem. Simulation results confirm the performance advantages of our proposed algorithms.

Item Type: Article
Uncontrolled Keywords: UAV, URLLC, short-packet transmission, relay
Subjects: F300 Physics
G400 Computer Science
G600 Software Engineering
Department: Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User: John Coen
Date Deposited: 19 May 2020 07:41
Last Modified: 19 May 2020 08:00
URI: http://nrl.northumbria.ac.uk/id/eprint/43178

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