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

Research output: Contribution to journalArticle

DOI

Authors

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

External departments

  • Queen Mary University of London
  • Southeast University

Details

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Early online date6 May 2020
DOIs
Publication statusE-pub ahead of print - 6 May 2020
Publication type

Research output: Contribution to journalArticle

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.

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