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Joshua Ridge

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Proceedings Article | 18 May 2020 Paper

Underwater 2-D visible light communication system

Joshua Ridge, Charles Nelson, Owens Walker, Hau Ngo

Proceedings Volume 11420, 114200C (2020) https://doi.org/10.1117/12.2557920

KEYWORDS: RGB color model, Image transmission, Visible radiation, Cameras, Image processing, Computer programming, Telecommunications, Free space, Image segmentation, Binary data

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Ever-increasing data rate demands on the electromagnetic spectrum have become a staple of the 21st century. Additionally, the demand for underwater communication has seen dramatic growth as both the military and industry work to reap the benefits of employing unmanned underwater vehicles. Exploration of the viability of relatively untapped portions of the electromagnetic spectrum to transmit data is crucial to potentially alleviate congested spectrums as well as provide high data rate, low detect probability, and low probability of intercept modalities of data transmission. This research explores the use of visible light communication methods to transmit data in an underwater medium. Specifically, this research proposes and analyzes the performance of an underwater free-space optical transmission scheme based on twodimensional, multi-colored grids. We explore the effects the underwater medium has on the transmitted image and evaluate link performance using metrics that include data rate and bit error rate. Additionally, this work evaluates the potential performance improvements that can be gained through the employment of adaptive equalization, which is designed to minimize bit error rate at the receiver.

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