M. K. Kundu

TL;DR: In this paper, the secrecy performance of a mixed radio frequency-free space optical (RF-FSO) system with a variable gain relaying scheme was investigated under the attempt of wiretapping by an eavesdropper.

TL;DR: The physical layer secrecy performance of a mixed radio frequency-free space optical (RF-FSO) system with variable gain relaying scheme is investigated in the presence of an eavesdropper to protect confidential information from being wiretapped.

TL;DR: This work derives closed-form analytical expressions for the probability of non-zero secrecy multicast capacity and the secure outage probability for multicasting in terms of the best relaying, and the correlation coefficients of constant, exponential and arbitrary correlations.

TL;DR: This paper investigates a secure dual-hop radio frequency-free space optical (RF-FSO) mixed variable gain relaying framework in the presence of a single eavesdropper, and demonstrates that HD technique notably outperforms the IM/DD scheme.

TL;DR: In this article, the authors derived closed-form expressions for secrecy outage probability (SOP) and strictly positive secrecy capacity (SPSC) considering heterodyne detection and intensity modulation with direct detection (IM/DD) techniques in order to examine the impact of atmospheric scintillation, pointing error, fading, and correlation on the system's secrecy performance.