TY - JOUR
T1 - Joint Transmit Power and Placement Optimization for URLLC-enabled UAV Relay Systems
AU - Ren, Hong
AU - Pan, Cunhua
AU - Wang, Kezhi
AU - Xu, Wei
AU - Elkashlan, Maged
AU - Nallanathan, Arumugam
N1 - A. Nallanathan would like to thank the U.K. Engineering and the Physical Sciences Research Council under Grant EP/N029666/1. W. Xu would like to thank the NSFC under grants 61941115 and 61871109.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - 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.
AB - 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.
KW - UAV
KW - URLLC
KW - relay
KW - short-packet transmission
UR - http://www.scopus.com/inward/record.url?scp=85089465973&partnerID=8YFLogxK
U2 - 10.1109/TVT.2020.2992736
DO - 10.1109/TVT.2020.2992736
M3 - Letter
SN - 0018-9545
VL - 69
SP - 8003
EP - 8007
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 7
M1 - 9088229
ER -