TY - JOUR
T1 - Outage Performance of Multitier UAV Communication With Random Beam Misalignment
AU - Wang, Weihao
AU - Fei, Zesong
AU - Guo, Jing
AU - Durrani, Salman
AU - Yanikomeroglu, Halim
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - By exploiting the degree of freedom on the altitude, unmanned aerial vehicle (UAV) communication can provide ubiquitous communication for future wireless networks. In the case of concurrent transmission of multiple UAVs, the directional beamforming formed by multiple antennas is an effective way to reduce co-channel interference. However, factors, such as airflow disturbance or estimation error for UAV communications, can cause the occurrence of beam misalignment. In this article, we investigate the system performance of a multitier UAV communication network with the consideration of unstable beam alignment. In particular, we propose a tractable random model to capture the impacts of beam misalignment in the 3-D space. Based on this, by utilizing stochastic geometry, an analytical framework for obtaining the outage probability in the downlink of a multitier UAV communication network for the closest distance association scheme and the maximum average power association scheme is established. The accuracy of the analysis is verified by Monte Carlo simulations. The results indicate that in the presence of random beam misalignment, the optimal number of UAV antennas needs to be adjusted to be relatively larger when the density of UAVs increases or the altitude of UAVs becomes higher.
AB - By exploiting the degree of freedom on the altitude, unmanned aerial vehicle (UAV) communication can provide ubiquitous communication for future wireless networks. In the case of concurrent transmission of multiple UAVs, the directional beamforming formed by multiple antennas is an effective way to reduce co-channel interference. However, factors, such as airflow disturbance or estimation error for UAV communications, can cause the occurrence of beam misalignment. In this article, we investigate the system performance of a multitier UAV communication network with the consideration of unstable beam alignment. In particular, we propose a tractable random model to capture the impacts of beam misalignment in the 3-D space. Based on this, by utilizing stochastic geometry, an analytical framework for obtaining the outage probability in the downlink of a multitier UAV communication network for the closest distance association scheme and the maximum average power association scheme is established. The accuracy of the analysis is verified by Monte Carlo simulations. The results indicate that in the presence of random beam misalignment, the optimal number of UAV antennas needs to be adjusted to be relatively larger when the density of UAVs increases or the altitude of UAVs becomes higher.
KW - Beam misalignment
KW - beamforming
KW - outage performance
KW - stochastic geometry
KW - unmanned aerial vehicle (UAV) communication
UR - http://www.scopus.com/inward/record.url?scp=85166305708&partnerID=8YFLogxK
U2 - 10.1109/JIOT.2023.3299279
DO - 10.1109/JIOT.2023.3299279
M3 - Article
AN - SCOPUS:85166305708
SN - 2327-4662
VL - 11
SP - 4163
EP - 4178
JO - IEEE Internet of Things Journal
JF - IEEE Internet of Things Journal
IS - 3
ER -