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

Hongyan Jiang; Hongbing Qiu; Ning He; Wasiu O. Popoola; Zahir Uddin Ahmad; Sujan Rajbhandari

doi:10.1109/JLT.2019.2963752

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

Hongyan Jiang, Hongbing Qiu, Ning He, Wasiu O. Popoola, Zahir Uddin Ahmad, Sujan Rajbhandari

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The performance of underwater visible light communication (UVLC) system is severely affected by absorption, scattering and turbulence. In this paper, 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.

Original language	English
Pages (from-to)	1-1
Journal	Journal of Lightwave Technology
DOIs	https://doi.org/10.1109/JLT.2019.2963752
Publication status	Published - 3 Jan 2020

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10.1109/JLT.2019.2963752

Spatial DiversityAccepted author manuscript, 2.09 MB

https://ieeexplore.ieee.org/document/8949728/

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

abstract = "The performance of underwater visible light communication (UVLC) system is severely affected by absorption, scattering and turbulence. In this paper, 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.",

author = "Hongyan Jiang and Hongbing Qiu and Ning He and Popoola, {Wasiu O.} and Ahmad, {Zahir Uddin} and Sujan Rajbhandari",

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AU - Ahmad, Zahir Uddin

AU - Rajbhandari, Sujan

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