Physical layer security of FSO communication system based on G-G correlation channel

Abstract

In this paper, the eavesdropping model based on eavesdroppers near legitimate users, and the effect of atmospheric channel correlation on the physical layer security (PLS) of the free-space optical (FSO) link are analyzed. According to the joint probability density function (PDF) and cumulative distribution function (CDF) of Gamma-Gamma (G-G) distribution, a new closed-form expression of interception probability is derived. Numerical results show that the interception probability of the FSO system depends on turbulence intensity, channel correlation and radial displacement attenuation of eavesdroppers.

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