Future Optimization Algorithm to Estimate Attenuation in 532 nm Laser Beam of UWOC-Channel: Improved Neural Network Model

Abstract

Underwater Optical Wireless Communication (UWOC) becomes an emerging underwater communication technology, with high-data rates over relatively medium transmission ranges. When optical wireless signal transmitted in ocean water channel, it will suffer from drastic scattering and absorption due to water molecules, dissolved particles, air bubbles, and turbulence. Absorption and scattering of the transmitted wireless optical signal in underwater channel led to attenuation in optical signal power. Optical signal attenuation over underwater channel is an aggregate of` different parameters effects that changed frequently, then practical measuring of this attenuation is complicated, difficult, expensive, and time-consuming process. In this work, improved neural network optimized with future search algorithm (FANN) was proposed, as an efficacious solution to obtain an accurate, relabel values of attenuation coefficient in different water types and conditions. The proposed FANN model provides a good much results to the practical measured values. The performance of the proposed FANN model was evaluated using mean square error (MSE), root mean square error (RMSE) and mean absolute error (MAE) error indices. The errors in attenuation coefficient values obtained by the proposed FANN model had been calculated and its values are very acceptable which are lie lower than 10-4. The performance of the proposed FANN model shows excellent results which indicate the superior performance of the proposed FANN model.

Artificial Neural Network-Based Transmission Power Control for Underwater Wireless Optical Communication System

“…Increasing numbers of undersea applications, such as oceanographic studies, ocean environment monitoring, Oil and mineral exploration, and military needs, are placing greater demands on communication technologies [1,2]. Consequently, Underwater Wireless Optical Communication (UWOC) has recently gained substantial attention as an appropriate and effective transmission option for various underwater applications [3].…”

“…Nonetheless, these model scenarios are restricted to the lab-controlled environment that has fixed inherent and apparent optical properties. In a real underwater environment, optical properties permanently change because of the unpredictable deviations caused by the fluctuations of waterbodies [2,6]. So, the performance of the practical UWOC devices will be limited and static.…”

Design and Experimental Study of an Efficient Controlled Cooling System for Optical Communication Laser Diodes

“…The channel is the medium in which the optical signals travelat present, there are two major types. The first is the fibre optic channel, where optical signals are transmitted in a flexible and transparent medium made of extremely fine silica glass or high-quality polymer; the second is the freespace optical (FSO) channel where optical signals are transmitted through an air medium [6,7]. Optical receivers are primarily responsible for the conversion of optical signals into electrical signals [3].…”