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

Hong Ren, Cunhua Pan, Kezhi Wang, Wei Xu, Maged Elkashlan, Arumugam Nallanathan

Research output: Contribution to journalLetterpeer-review

7 Citations (Scopus)
4 Downloads (Pure)

Abstract

This letter considers an 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.

Original languageEnglish
Article number9088229
Pages (from-to)8003-8007
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume69
Issue number7
Early online date6 May 2020
DOIs
Publication statusPublished - 1 Jul 2020

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