TY - JOUR
T1 - Joint Design of Power Allocation, Beamforming and Positioning for Energy-Efficient UAV-Aided Multiuser Millimeter-Wave Systems
AU - Yu, Xiangbin
AU - Huang, Xu
AU - Wang, Kezhi
AU - Shu, Feng
AU - Dang, Xiaoyu
N1 - National Natural Science Foundation of China under Grant 62071234, Grant 62071229, and Grant 61972093; in part by the Hainan Province Science and Technology Special Fund under Grant DKJ2021022; in part by the Scientific Research Fund Project of Hainan University under Grant KYQD(ZR)-21008; and in part by the National Key Research and Development Program of China under Grant 2018YFB180110.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - In this paper, the joint design of power allocation (PA), beamforming (BF) and positioning is studied for unmanned-aerial-vehicle (UAV) aided millimeter-Wave (UAV-mmWave) systems, with the objective of maximizing the energy efficiency (EE), under the constraints of maximum transmitting power, minimum data rate from the ground users and positioning range of the UAV. To address the above problem, we first obtain the positioning of the UAV, with the help of approximate beam pattern. Then, near-optimal BF and closed-form PA are derived given the obtained position, with the help of block coordinate descent method. To reduce the complexity, two suboptimal BF schemes with one-loop iteration and closed-form solutions are respectively derived. Furthermore, we propose the simplified algorithms for two special cases, i.e., only line-of-sight (LoS) path and Non-LoS (NLoS) path exist between the users and the UAV. Simulation results verify the effectiveness of the developed joint schemes and show the superior EE performance. Moreover, they can obtain almost the same performance as the existing benchmark schemes but with lower complexity.
AB - In this paper, the joint design of power allocation (PA), beamforming (BF) and positioning is studied for unmanned-aerial-vehicle (UAV) aided millimeter-Wave (UAV-mmWave) systems, with the objective of maximizing the energy efficiency (EE), under the constraints of maximum transmitting power, minimum data rate from the ground users and positioning range of the UAV. To address the above problem, we first obtain the positioning of the UAV, with the help of approximate beam pattern. Then, near-optimal BF and closed-form PA are derived given the obtained position, with the help of block coordinate descent method. To reduce the complexity, two suboptimal BF schemes with one-loop iteration and closed-form solutions are respectively derived. Furthermore, we propose the simplified algorithms for two special cases, i.e., only line-of-sight (LoS) path and Non-LoS (NLoS) path exist between the users and the UAV. Simulation results verify the effectiveness of the developed joint schemes and show the superior EE performance. Moreover, they can obtain almost the same performance as the existing benchmark schemes but with lower complexity.
U2 - 10.1109/jsac.2022.3196111
DO - 10.1109/jsac.2022.3196111
M3 - Article
VL - 40
SP - 2930
EP - 2945
JO - IEEE Journal on Selected Areas in Communications
JF - IEEE Journal on Selected Areas in Communications
SN - 0733-8716
IS - 10
ER -
