Joint Transmit Power and Placement Optimization for URLLC-enabled UAV Relay Systems
Research output: Contribution to journal › Letter › peer-review
DOI
Departments
External departments
- Queen Mary University of London
- Southeast University, Nanjing
Details
Original language | English |
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Article number | 9088229 |
Pages (from-to) | 8003-8007 |
Number of pages | 5 |
Journal | IEEE Transactions on Vehicular Technology |
Volume | 69 |
Issue number | 7 |
Early online date | 6 May 2020 |
DOIs | |
Publication status | Published - 1 Jul 2020 |
Publication type | Research output: Contribution to journal › Letter › peer-review |
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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.