Ergodic capacity analysis of underwater FSO systems over scattering-induced fading channels in the presence of Weibull oceanic turbulence

Pedro Salcedo-Serrano, Ruben-Boluda-Ruiz, José María Garrido-Balsells, Antonio García-Zambrana
January 2022
Cite DOI URL

Abstract

Scattering is considered as the main degrading factor in underwater optical wireless communication (UOWC) systems, especially in turbid environments over moderate and long link spans. For that reason, the optics community is making an extra effort to accurately model its impact on the system performance, by means, for example, of the channel capacity. This paper addresses the performance analysis of UOWC systems over a novel scattering-induced fading channel along with the effect of oceanic salinity-induced turbulence, and provides novel closed-form expressions to compute such a performance in terms of ergodic capacity. Asymptotic results are also derived in order to shed some light on how such a scattering-induced fading deteriorates the capacity performance in a variety of water conditions such as clear ocean and coastal waters. In particular, the presented results show quite a similar impact when strong and moderate oceanic turbulence conditions are considered, which demonstrates that scattering-induced fading is a critical degrading effect in UOWC systems, especially in turbid environments. Analytical and asymptotic results are further verified by Monte Carlo simulations. © 2022 IEEE.

Type
Conference paper
Publication
IEEE International Conference on Communications
Channel Capacity Fading Channels Intelligent Systems Monte Carlo Methods Optical Communication Turbulence Asymptotic Results Capacity Analysis Degrading Factors Ergodic Capacity Fadings Channels Oceanic Turbulence Optical Wireless Communication Systems Scattering-Induced Fading Channel Underwater FSO Weibull Underwater Optical Wireless Communication
Pedro Salcedo-Serrano
Pedro Salcedo-Serrano
Postdoctoral Researcher / External Collaborator

Postdoctoral researcher and external collaborator of WOCLab working on optical wireless communications, underwater optical links, channel modelling and performance analysis.

José María Garrido-Balsells
José María Garrido-Balsells
Professor of Telecommunications Engineering

Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, optical channel modelling and experimental communication systems.

Antonio García-Zambrana
Antonio García-Zambrana
Professor of Telecommunications Engineering

Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, visible light communications, and FPGA/RFSoC-based real-time prototyping.