Shadowed FSO/mmWave Systems with Interference

TL;DR

This paper analyzes the performance of mixed FSO/mmWave relay networks with interference, providing unified analytical expressions for key metrics and proposing an optimal power allocation strategy to enhance system reliability.

Contribution

It introduces a unified H-transform based framework for analyzing mixed FSO/mmWave systems with interference, including closed-form and asymptotic performance expressions.

Findings

Derived closed-form outage probability and BER expressions.

Provided asymptotic high-SINR performance analysis.

Proposed an optimal power allocation strategy to minimize outage.

Abstract

We investigate the performance of mixed free space optical (FSO)/millimeter-wave (mmWave) relay networks with interference at the destination. The FSO/mmWave channels are assumed to follow Malaga-M/Generalized-K fading models with pointing errors in the FSO link. The H-transform theory, wherein integral transforms involve Fox's H-functions as kernels, is embodied to unifying the performance analysis framework that encompasses closed-form expressions for the outage probability, the average bit error rate (BER) and the average capacity. By virtue of some H-transform asymptotic expansions, the high signal-to-interference-plus-noise ratio (SINR) analysis reduces to easy-to-compute expressions for the outage probability and BER, which reveals inside information for the system design. We finally investigate the optimal power allocation strategy, which minimizes the outage probability.