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Security performance analysis of SIMO relay systems over Composite Fading Channels
( Jiangfeng Sun ),( Hongxia Bie ),( Xingwang Li ) 한국인터넷정보학회 2020 KSII Transactions on Internet and Information Syst Vol.14 No.6
In this paper, we analyze the secrecy performance of single-input multiple-output (SIMO) relay systems over κ-μ shadowed fading channels. Based on considering relay model employing decode-and-forward (DF) protocol, two security evaluation metrics, namely, secure outage probability (SOP) and probability of strictly positive secrecy capacity (SPSC) are studied, for which closed-form analytical expressions are derived. In addition, Monte Carlo results prove the validity of the theoretical derivation. The simulation results confirm that the factors that enhance the security include large ratio of (μ<sub>D</sub>,μ<sub>E</sub>), (m<sub>D</sub>,m<sub>E</sub>), (L<sub>D</sub>,L<sub>E</sub>) and small ratio of (k<sub>D</sub>,k<sub>E</sub>) under the high signal-to-noise ratio regime.