Design and Evaluation Study of Performance of Optical Wireless Sensors Network for Achieving High Data Rate and Power Saving

Isam Aameer Ibrahim,Tahreer Safa'S Mansour

doi:10.3991/ijim.v15i14.21427

Abstract

Abstract—One of the major global issues today is the growing requirements for high-speed data transmission, energy consumption, and the huge volume of data utilized by a variety of multimedia applications such as video streaming, monitoring systems, and gaming. In this research, an analysis is carried out to study the design and evaluation of performance underwater OWC systems (UOWC) through medium communication link ranges to overcome absorption and scattering and to meet the requirements of a wide variety of optical wireless applications. Two modulation schemes of technology have been proposed in the UOWC system which is Differential Phase Shift Keying (DPSK) modulation with Direct Detection (DD) and the DPSK modulation with Coherent Detection (CD), both of them used Optical Orthogonal Frequency Division Multiplexing (OFDM) based on different configurations of multi-input multi-output technology (MIMO). The mathematical model has been proposed to calculate optimal beacon period (BI) and listen to the interval (LI) for preventing overlapping time between the signals and the required power is reduced. By using different types of water the simulation results are displayed the best performance of the UOWC system from link rang and receiver sensitivity. The simulation result of BER is equal 10-5, BI equal to 85ms, and LI equal to 108ms.

Highlights

Two-thirds of our Earth is covered by water, as it is a water planet
Much research work has been implemented for the underwater wireless network, but problems begin to surface with further development in the study of this system, especially due to the challenges posed in the study of acoustic and optical wireless channels [2]
We present a description of the design of Differential Phase Shift Keying (DPSK)-Direct Detection (DD) with optical Orthogonal Frequency Division Multiplexing (OFDM).The design is realized using optiwave software, that has played a pivotal role in the provision of a huge number of optical and wireless components for building and implementing a complete optical network scheme with an access network

Summary

Introduction

Two-thirds of our Earth is covered by water, as it is a water planet. With the rapid technological developments, the area of underwater communications has grown rapidly and extensively with a wide-range of applications in many fields such as in the military forces and commercial sectors. The unique underwater conditions pose many new challenges that were not faced in wireless terrestrial communications Despite these shortcomings, the demand for wireless underwater networks is on the rise especially in acoustic, optical, and RF (Radiofrequency) communications. Because of its short wavelength, high frequency, and high speed, these optical waves are capable of communicating at an extremely high data rate (up to 1Gbps) [4] These short optical waves are suitable for use as wireless communication carriers, despite, strong water absorption and strong backscatter of suspended particles in the optical frequency band. These optical waves that offer high data rate, and high bandwidth, are a feasible for underwater optical communications [5]

Methods

Results

Conclusion