Author
Elamassie, Mohammed, Al-Nahhal, Mohamed, Kızılırmak, R. Ç., Uysal, Murat
Publication Date
2019
Publication Place
-
IEEE
Subject
Underwater visible light communication, Underwater optical turbulence, Transmit laser selection, Bit error rate performance, Diversity order
Type
Document
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
978-153868110-7
Record ID
5b1f7329-2292-4dfd-991c-a78a93014b4f
Library Location
Electrical & Electronics Engineering
Date
2019
Notes
National Council for Scientific Research ; TÜBİTAK
Sample Text
Visible light communication (VLC) has the potential to serve as a high-speed underwater wireless connectivity solution to support real-time image and video transmission. Underwater propagation medium imposes additional challenges on the design of VLC systems which were originally proposed for indoor applications. Temperature and salinity fluctuations result in fluctuations of the refractive index of seawater and eventually introduce turbulence-induced fading. In this paper, to mitigate the effects of fading, we propose transmit laser selection for a diver-to-diver underwater VLC link where the transmitter has multiple laser sources and the receiver has one photodetector. The source with the highest received instantaneous signal-to-noise ratio is selected for transmission while the remaining sources remain idle. We derive a closed-form expression for asymptotical bit error rate over log-normal distributed underwater turbulence channels and derive the achievable diversity order. We further present simulation results to confirm our derivations and diversity gain analysis.
DOI
10.1109/PIMRC.2019.8904100
