Physical Layer Security of Dual-Hop Hybrid FSO-mmWave Systems

Hybrid free-space optical (FSO) and millimeter wave (mmWave) systems have been proposed as an efficient solution to improve spectral efficiency maintain link reliability. The comparable supported data rate the complementary characteristics in different weather conditions of both links, i.e., FSO mmWave) attracted research efforts towards analyzing performance aspects hybrid FSO-mmWave systems. Following this direction, article, physical-layer security analysis dual-hop is addressed. In considered system, mmWave links are simultaneously used carry at each hop, while eavesdropper assumed present wiretap either one or links. includes building a mathematical framework derive secrecy metrics, such average capacity, outage probability effective throughput expressions. Obtained analytical results verified using Monte Carlo simulations where exact matching achieved. Moreover, presented include investigation impact operational parameters on overall performance.