Channel-aware outage modeling for dual-hop mixed optical wireless communication systems
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Anshul Vats
Abstract
This paper presents an in-depth analysis of the outage performance in a dual-hop mixed communication system that combines Free Space Optical (FSO) and Underwater Optical Communication (UWOC) links. The closed-form expressions of the outage probability of the system are derived, while considering practical channel conditions. Specifically, the FSO hop is modeled using Gamma–Gamma statistics to account for pointing errors and atmospheric turbulence, while the UWOC channel follows an Exponential Generalized Gamma (EGG) fading distribution to capture underwater impairments. To validate the analytical results, extensive numerical simulations are conducted, highlighting the impact of key parameters – such as path loss, scintillation, angle-of-arrival variations, water salinity, and pointing instability – on the performance of the considered system.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: All other authors state no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
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