Aiming at the characteristics of Single Input Multiple Output(SIMO)that can improve system transmission speed and channel capacity,as well as the ability of relay networks to expand transmission range and improve system reliability,the Physical Layer Security(PLS)performance of SIMO relay system over the Rayleigh fading channel model is studied.Based on the Wyner eavesdropping model,the SIMO relay network is constructed.The closed-form theoretical formulas for Secure Outage Probability(SOP)and Strictly Positive Secrecy Capacity(SPSC)are expressed in a unified function.Two scenarios are analyzed based on the different number of antennas at the legitimate and eavesdropping ends.Finally,the correctness of the derived results is verified by Monte Carlo simulation.Experiments have shown that increasing the signal to noise ratio of legitimate link,reducing the signal to noise ratio of eavesdropping link,reducing threshold and increasing the number of antennas on the user end can effectively enhance the anti-eavesdropping ability of SIMO system.
维普
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