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    Performance of UAV assisted Multiuser Terrestrial-Satellite Communication System over Mixed FSO/RF Channels

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    Type
    Article
    Authors
    Singya, Praveen Kumar
    Alouini, Mohamed-Slim cc
    KAUST Department
    Communication Theory Lab
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Electrical and Computer Engineering Program
    Date
    2021-09-10
    Online Publication Date
    2021
    Print Publication Date
    2022-04
    Permanent link to this record
    http://hdl.handle.net/10754/671146
    
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    Abstract
    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is assumed at the UAV and opportunistic user scheduling is performed while considering the practical constraints of outdated channel state information (CSI) during the user selection and transmission phase.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.2021.3111787
    Publisher
    IEEE
    Journal
    IEEE Transactions on Aerospace and Electronic Systems
    DOI
    10.1109/TAES.2021.3111787
    Additional 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
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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