Performance of UAV assisted Multiuser Terrestrial-Satellite Communication System over Mixed FSO/RF Channels
Type
ArticleKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Electrical and Computer Engineering Program
Date
2021-09-10Online Publication Date
2021Print Publication Date
2022-04Permanent link to this record
http://hdl.handle.net/10754/671146
Metadata
Show full item recordAbstract
In this work, performance of a multi-antenna multiuser unmanned aerial vehicle (UAV) assisted terrestrial-satellite communication system over mixed free space optics (FSO)/ radio frequency (RF) channels is analyzed. Downlink transmission from the satellite to the UAV is completed through FSO link which follows Gamma-Gamma distribution with pointing error impairments. Both the heterodyne detection and intensity modulation direct detection techniques are considered at the FSO receiver. To avail the antenna diversity, multiple transmit antennas are considered at the UAV. Selective decode-and-forward scheme is assumed at the UAV and opportunistic user scheduling is performed while considering the practical constraints of outdated channel state information (CSI) during the user selection and transmission phase. The RF links are assumed to follow Nakagami-m distribution due to its versatile nature. In this context, for the performance analysis, analytical expressions of outage probability, asymptotic outage probability, ergodic capacity, effective capacity, and generalized average symbol-error-rate expressions of various quadrature amplitude modulation (QAM) schemes such as hexagonal-QAM, cross-QAM, and rectangular QAM are derived. A comparison of various modulation schemes is presented. Further, the impact of pointing error, number of antennas, delay constraint, fading severity, and imperfect CSI are highlighted on the system performance. Finally, all the analytical results are verified through the Monte-Carlo simulations.Citation
Singya, P. K., & Alouini, M.-S. (2021). Performance of UAV assisted Multiuser Terrestrial-Satellite Communication System over Mixed FSO/RF Channels. IEEE Transactions on Aerospace and Electronic Systems, 1–1. doi:10.1109/taes.2021.3111787Publisher
IEEEAdditional Links
https://ieeexplore.ieee.org/document/9535285/https://ieeexplore.ieee.org/document/9535285/
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9535285
ae974a485f413a2113503eed53cd6c53
10.1109/TAES.2021.3111787