Abstract
In this paper, we investigate the performance of decode-and-forward dual-hop mixed RF/FSO system in fifth-generation (5G) cloud radio access network. To describe the 5G channel characteristics properly, we assume that the RF link follows κ−μ shadowed fading which has been recently proposed to model small-scale multipath fading as well as line-of-sight (LOS) shadowing. For the FSO link, we adopt the Exponentiated Weibull distribution which can represent irradiance fluctuations at the finite receiving aperture over a wide range of turbulence conditions. We first derive the cumulative distribution function in terms of Meijer’s G function, and then use it to obtain the analytical expressions of the outage probability, average bit error rate and ergodic capacity. The system performances are analyzed with different κ−μ shadowed fading parameters, turbulence strength and receiver aperture sizes. The analytical results show an accurate match to the Monte-Carlo simulation.
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