Performance analysis of the dual-hop mixed RF/UWOC system with fog channel and turbulence based on diversity

Qian Pei, Yanjun Zhang, Feng Liu and Xinghu Fu

Journal of Electromagnetic Waves and Applications, 2024, vol. 38, issue 13, 1495-1513

Abstract: In this paper, the performance of a dual-hop mixed radio frequency (RF)/underwater wireless optical communication (UWOC) system with amplifying and forwarding (AF) relaying is investigated. The diversity combining technology were combined with unifying Fisher-Snedecor ( $ \mathcal{F} $ F), extended generalized- $ {\mathcal{K}} $ K (EGK), and $ \alpha - \mu $ α−μ distribution for atmospheric turbulence in foggy conditions to analyze the probability density function (PDF) of RF links. The UWOC link experiences mixed exponential generalized gamma (EGG) fading. By utilizing diversity combination methods and considering the statistical effects of atmospheric turbulence, random fog, and underwater turbulence, we derive the expression for the PDF of the RF/UWOC system. In addition, the tight asymptotic expression for the outage probability and average bit error rate under high signal-to-noise ratio (SNR) is provided. The analytical expressions are verified by Monte Carlo method, and the effects of channel number on RF/UWOC system performance under various atmospheric, underwater and weather conditions are demonstrated.

Date: 2024
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DOI: 10.1080/09205071.2024.2380379

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