Author
Elamassie, Mohammed, Uysal, Murat
Publication Date
2020-10
Publication Place
-
IEEE
Subject
Fading channels, Ocean temperature, Wireless communication, Salinity (geophysical), Temperature measurement, Diversity methods, Underwater visible light communication, Underwater turbulence, Error rate performance, Diversity order
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1536-1276
Record ID
5a58125c-f273-4642-ba89-0b5c15dd37c7
Library Location
Electrical & Electronics Engineering
Date
2020-10
Notes
TÜBİTAK
Sample Text
Underwater visible light communication (UVLC) has been introduced to support emerging high data rate applications such as real-time image and video transmission. Initial works on UVLC build upon the assumption of fixed turbulence strength through the transmission range which can be justified only for horizontal links. In vertical underwater links, the gradient of temperature and salinity changes with depth. This effectively results in ocean stratification where water with different values of salinity and temperature form non-mixing layers. In this paper, we first model the vertical underwater link as a cascaded fading channel where fading coefficients associated with different layers are modeled as independent and non-identical distributed. Based on the cascaded lognormal and Gamma-Gamma distributions respectively for weak and moderate/strong turbulence conditions, we first derive closed-form expressions for the bit error rate (BER) performance of UVLC systems. Then, we analyze the asymptotic BER performance and determine the diversity orders. In addition, we derive closed-form expressions for the average ergodic capacity of underwater cascaded fading channels under consideration. We present simulation results to confirm the analytical findings.
DOI
10.1109/TWC.2020.3007343
Cilt
19
