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

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

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    37 Citations (Scopus)
    244 Downloads (Pure)

    Abstract

    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.

    Original languageEnglish
    Article number8949728
    Pages (from-to)2271-2277
    Number of pages7
    JournalJournal of Lightwave Technology
    Volume38
    Issue number8
    Early online date3 Jan 2020
    DOIs
    Publication statusPublished - 15 Apr 2020

    Bibliographical note

    © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    Funder

    This work was supported in part by the National Natural Science Foundation of China under Grant 61661016 and in part by the Director Fund Project of Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing under Grant CXKL06180101. The work of H. Jiang was supported by the Study Abroad Program for the Graduate Student of Guilin University of Electronic Technology under Grant GDYX2018002.

    Keywords

    • OFDM
    • spatial diversity
    • turbulence mitigation
    • underwater visible light communications (UVLC)

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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