On Secrecy Performance of Mixed RF-FSO Systems

On Secrecy Performance of Mixed RF-FSO Systems

In this paper, we study the secrecy performance of a mixed radio frequency-free space optical (RF-FSO) transmission systems. All RF links experience Nakagami-<inline-formula><tex-math notation="LaTeX">$m$</tex-math></inline-formula> fading and the FSO link experienc...

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Bibliographic Details
Main Authors: Hongjiang Lei, Zhijun Dai, Imran Shafique Ansari, Ki-Hong Park, Gaofeng Pan, Mohamed-Slim Alouini
Format: Article
Language:English
Published: IEEE 2017-01-01
Series:IEEE Photonics Journal
Subjects:
Physical layer security
mixed radio frequency-free space optical (RF-FSO) systems
Gamma-Gamma fading
secrecy outage probability
average secrecy capacity.
Online Access:https://ieeexplore.ieee.org/document/7968415/
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Summary:In this paper, we study the secrecy performance of a mixed radio frequency-free space optical (RF-FSO) transmission systems. All RF links experience Nakagami-<inline-formula><tex-math notation="LaTeX">$m$</tex-math></inline-formula> fading and the FSO link experiences the Gamma&#x2013;Gamma fading. The effect of pointing error and two types of detection techniques (i.e., heterodyne detection and intensity modulation with direct detection) are considered. We derive closed-form expressions for lower bound of the secrecy outage probability (SOP) and exact average secrecy capacity (ASC). Furthermore, by utilizing the expansion of Meijer&#x0027;s G-function, asymptotic results for SOP and ASC are derived when the electrical signal-to-noise ratio of the FSO link tends to infinity. Numerical and Monte Carlo simulation results are provided to verify the accuracy of our proposed results.
ISSN:1943-0655

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