Mixed M\'alaga-$\mathcal{M}$ and Generalized-$\cal K$ Dual-Hop FSO/RF Systems with Interference

TL;DR

This paper analyzes the performance of dual-hop FSO/RF relay networks affected by RF interference over complex fading channels, providing unified closed-form and asymptotic expressions for key performance metrics.

Contribution

It introduces a novel H-transform based framework for unified performance analysis of mixed FSO/RF systems with interference over generalized fading channels.

Findings

Closed-form expressions for outage probability, BER, and capacity.

Asymptotic high-SINR analysis simplifies performance evaluation.

Framework encompasses complex fading and pointing error effects.

Abstract

This paper investigates the impact of radio frequency (RF) cochannel interference (CCI) on the performance of dual-hop free-space optics (FSO)/RF relay networks. The considered FSO/RF system operates over mixed M\'alaga-$\mathcal{M}$/composite fading/shadowing generalized-$\cal K$ ($\cal GK$) channels with pointing errors. The {\rm H}-transform theory, wherein integral transforms involve Fox's {\rm H}-functions as kernels, is embodied into a unifying performance analysis framework that encompasses closed-form expressions for the outage probability, the average bit error rate (BER), and the ergodic capacity. By virtue of some {\rm H}-transform asymptotic expansions, the high signal-to-interference-plus-noise ratio (SINR) analysis culminates in easy-to-compute expressions for the outage probability and BER.