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Performance of non-line of sight underwater optical wireless communication links

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Umar, A. B. and Leeson, Mark S. (2020) Performance of non-line of sight underwater optical wireless communication links. International Journal of Photonics and Optical Technology, 6 (1). pp. 5-10.

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Official URL: http://www.ijpot.org/issues/olds/6/1

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Abstract

Underwater optical wireless communication (UOWC) offers the prospect of higher bandwidths and data rates for underwater communications. However, UOWC systems also suffer from severe absorption and scattering introduced by the underwater channel. They may also be blocked by a myriad of obstructions under the water. Hence, in this paper, we consider the characteristics of a non-line-of-sight (NLOS) UOWC link with multiple scattering based on Monte Carlo simulation. We address the channel response of an NLOS-UOWC system with different channel modulation schemes. The resultant channel impulse (CIR) response varies with the type of water considered and the receiver field of view (FOV). Thus, we investigate the CIR and likely transmission distance for clear ocean, costal water and turbid water for FOV values of 30° and 60°. Then, the CIR obtained using different modulation formats is investigated in coastal water since this is a likely application medium. Finally, we evaluate the bit error rate (BER) and throughput of the system including variation in the receiver bandwidth. It is seen that distances over 80 meters are possible, providing BER values of 10-4 or better and throughput of 2.1 Mbps. This demonstrates that NLOS-UOWC offers a route to transmission at higher speeds than incumbent technologies in areas such as inshore environmental monitoring or oil exploration.

Item Type: Journal Article
Subjects: Q Science > QA Mathematics
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Wireless communication systems -- Technological innovations, Optical communications -- Technological innovations, Underwater imaging systems, Monte Carlo method, Image processing -- Mathematical models
Journal or Publication Title: International Journal of Photonics and Optical Technology
ISSN: 2455-8869
Official Date: 30 March 2020
Dates:
DateEvent
30 March 2020Published
16 March 2020Accepted
Volume: 6
Number: 1
Page Range: pp. 5-10
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: This paper is not to be used for any commercial activity.
Access rights to Published version: Restricted or Subscription Access
Copyright Holders: Copyright © IJPOT, All Rights Reserved

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