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Investigation into Using Compensation for the Nonlinear Effects of the Output of LEDs in Visible Light Communication Systems

Andrew Burton, Zabih Ghassemlooy, Stanislav Zvánovec, Paul Anthony Haigh, Hoa Le Minh, Xicong Li

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    4 Citations (Scopus)
    65 Downloads (Pure)

    Abstract

    This paper investigate the effects of the nonlinear output power to the input current transfer function of a light emitting diode (LED) used as the transmitter in visible light communication systems, and proposes a compensation technique to mitigate the non-linearity. Using an off the shelf red, amber, blue, green (RAGB) LED the nonlinear transfer function is measured and then compensated for. The results show that, for the green LED, which has the highest degree of nonlinearity, an improvement in the received error vector magnitude (EVM)of almost 7 dB can be achieved. We also show that, the improvement in EVM over the uncompensated scheme decreases with increased LED linearity.
    Original languageEnglish
    Title of host publicationThe 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC2019)
    Subtitle of host publication27-28 April, Shahid Beheshti University, Tehran, Iran
    Place of PublicationPiscataway, NJ
    PublisherIEEE
    Pages80-84
    Number of pages5
    ISBN (Electronic)9781728137674
    ISBN (Print)9781728137681
    DOIs
    Publication statusPublished - Apr 2019
    Event2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC) - Tehran, Iran
    Duration: 27 Apr 201928 Apr 2019

    Conference

    Conference2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC)
    Period27/04/1928/04/19

    Keywords

    • Compensation
    • EVM
    • LED
    • MCAP
    • Nonlinear
    • Visible light communications

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