Performance of Spatial Diversity DCO-OFDM in a Weak Turbulence Underwater Visible Light Communication Channel

被引：37
|
作者：
Jiang, Hongyan [1 ]
Qiu, Hongbing [1 ]
He, Ning [1 ,2 ]
Popoola, Wasiu O. [3 ]
Ahmad, Zahir Uddin [4 ]
Rajbhandari, Sujan [4 ,5 ]
机构：
[1] Guilin Univ Elect Technol, Sch Informat & Commun, Guilin 541004, Peoples R China
[2] Guangxi Key Lab Wireless Wideband Commun & Signal, Guilin 541004, Peoples R China
[3] Univ Edinburgh, Inst Digital Commun, Sch Engn, Edinburgh EH8 9YL, Midlothian, Scotland
[4] Coventry Univ, Sch Comp Elect & Math, Coventry CV1 5FB, W Midlands, England
[5] Coventry Univ, Inst Future Transport & Cities, Coventry CV1 5FB, W Midlands, England
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2020年 / 38卷 / 08期
基金：
中国国家自然科学基金;
关键词：
OFDM; spatial diversity; turbulence mitigation; underwater visible light communications (UVLC); OPTICAL WIRELESS COMMUNICATIONS; SYSTEMS; TRANSMISSION;
D O I：
10.1109/JLT.2019.2963752
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The performance of underwater visible light communication (UVLC) system is severely affected by absorption, scattering and turbulence. In this article, we study the performance of spectral efficient DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) in combination with the transceiver spatial diversity in turbulence channel. Based on the approximation of the weighted sum of lognormal random variables (RVs), we derived a theoretical exact bit error rate (BER) for DCO-OFDM systems with spatial diversity. The simulation results are compared with the analytical prediction, confirming the validity of the analysis. It is shown that spatial diversity can effectively reduce the turbulence-induced channel fading. The obtained results can be useful for designing, predicting, and evaluating the DCO-OFDM UVLC system in a weak oceanic turbulence condition.
引用
收藏
页码：2271 / 2277
页数：7
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