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    Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection

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    Type
    Article
    Authors
    Lei, Hongjiang
    Luo, Haolun
    Park, Kihong cc
    Ren, Zhi
    pan, Gaofeng
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2018-06-15
    Online Publication Date
    2018-06-15
    Print Publication Date
    2018-06
    Permanent link to this record
    http://hdl.handle.net/10754/631815
    
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    Abstract
    We analyze the secrecy outage performance of a mixed radio frequency-free space optical (RF-FSO) transmission system with imperfect channel state information (CSI). We deal with a single input multiple output (SIMO) wiretap model, where a base station (works as the relay) forwards the signal transmitted from a user (source) to a data center (works as the destination), while an eavesdropper wiretaps the confidential information by decoding the received signal. Both the relay and the eavesdropper are armed with multiple antennas and maximal ratio combining scheme is utilized to improve the received signal-to-noise ratio (SNR). The effects of imperfect CSI of the RF link and the FSO link, misalignment, detection schemes, and relaying schemes on the secrecy outage performance of mixed RF-FSO systems are studied. Firstly, the cumulative distribution function and probability density function of FSO links with pointing error and two different detection technologies are derived. Then we derive the closed-form expressions for the lower bound of the secrecy outage probability (SOP) with fixed-gain relaying and variable-gain relaying schemes. Furthermore, asymptotic results for SOP are investigated by exploiting the unfolding of Meijer's G-function when the electrical SNR of FSO link approaches infinity. Finally, Monte-Carlo simulation results are presented to corroborate the correctness of the analysis.
    Citation
    Lei H, Luo H, Park K-H, Ren Z, Pan G, et al. (2018) Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection. IEEE Photonics Journal 10: 1–13. Available: http://dx.doi.org/10.1109/JPHOT.2018.2835562.
    Sponsors
    National Natural Science Foundation of China[61471076]
    China Scholarship Council[201607845004]
    Program for Changjiang Scholars and Innovative Research Team in University[IRT_16R72]
    Key Lab of Chongqing Municipal Education Commission
    Project of Fundamental and Frontier Research Plan of Chongqing[cstc2015jcyjBX0085, cstc2017jcyjAX0204]
    Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJ1704088, KJ1600413]
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Photonics Journal
    DOI
    10.1109/JPHOT.2018.2835562
    Additional Links
    https://ieeexplore.ieee.org/document/8358703/
    ae974a485f413a2113503eed53cd6c53
    10.1109/JPHOT.2018.2835562
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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