On the Intercept Probability and Secure Outage Analysis of Mixed (α-κ-μ)-Shadowed and Málaga Turbulent Models

Noor Ahmad Sarker, A. S.M. Badrudduza, S. M.Riazul Islam, Sheikh Habibul Islam, Milton Kumar Kundu, Imran Shafique Ansari, Kyung Sup Kwak

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This work deals with the secrecy performance analysis of a dual-hop RF-FSO DF relaying network composed of a source, a relay, a destination, and an eavesdropper. We assume the eavesdropper is located close to the destination and overhears the relay's transmitted optical signal. The RF and FSO links undergo (α-κ-μ)-shadowed fading and unified Málaga turbulence with pointing error. The secrecy performance of the mixed system is studied by deriving closed-form analytical expressions of secure outage probability (SOP), strictly positive secrecy capacity (SPSC), and intercept probability (IP). Besides, we also derive the asymptotic SOP, SPSC, and IP upon utilizing the unfolding of Meijer's G function where the electrical SNR of the FSO link tends to infinity. Finally, the Monte-Carlo simulation is performed to corroborate the analytical expressions. Our results illustrate that fading, shadowing, detection techniques (i.e. heterodyne detection (HD) and intensity modulation and direct detection (IM/DD)), atmospheric turbulence, and pointing error significantly affect the secrecy performance. In addition, better performance is obtained exploiting the HD technique at the destination relative to IM/DD technique.

Original languageEnglish
Pages (from-to)133849-133860
Number of pages12
JournalIEEE Access
Early online date16 Sep 2021
Publication statusPublished - 5 Oct 2021
Externally publishedYes


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