Affiliation:
1. Xi’an University of Posts and Telecommunications
Abstract
In this study, we examined the performance of an underwater wireless
optical communication (UWOC) system employing a single-input to
multiple-output (SIMO) scheme and proposed an equalization equal gain
combining (EEGC) algorithm for it under Gaussian beam conditions.
Furthermore, based on a Yue spectrum with the instability of oceanic
water stratification and a finite outer scale, we derived the closed
analytical formulas for the scintillation index and spatial coherence
radius in weak oceanic turbulence for a Gaussian beam, from which we
could obtain the threshold of the detector spacing and the strength of
oceanic turbulence. We then derived the closed-form formula for the
upper bound average bit error rate of the EEGC SIMO system with ON-OFF
keying modulation by using the hyperbolic tangent distribution
function. Our simulations demonstrate two issues if oceanic water
stratification is treated as a steady state: the performance of the
diversity receiver system will be significantly underestimated in
salinity-dominated weak oceanic turbulence channels and will be
significantly overestimated in temperature-dominated weak oceanic
turbulence channels. Additionally, the SIMO system performance
improvement using the proposed EEGC algorithm was more evident with
increasing detector spacing, and the EEGC algorithm reduced the impact
of the layout of the avalanche photodiode arrays on the UWOC system
performance, in contrast to the equal gain combining algorithm.
Funder
Foundation of the Ministry of Education
for Equipment Advance Research
Microwave Photonics and Optical
Communication Innovation Team of Shaanxi Province
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献