A 3Gb/s single-LED OFDM-based wireless VLC link using a gallium nitride µLED

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Tsonev, Dobroslav and Chun, Hyunchae and Rajbhandari, Sujan and McKendry, Jonathan J. D. and Videv, Stefan and Gu, Erdan and Haji, Mohsin and Watson, Scott and Kelly, Anthony E. and Faulkner, Graheme and Dawson, Martin D. and Haas, Harald and O'Brien, Dominic (2014) A 3Gb/s single-LED OFDM-based wireless VLC link using a gallium nitride µLED. IEEE Photonics Technology Letters, 26 (7). pp. 637-640. ISSN 1041-1135 (https://doi.org/10.1109/LPT.2013.2297621)

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Abstract

This letter presents a visible light communication (VLC) system based on a single 50-µm gallium nitride light emitting diode (LED). A device of this size exhibits a 3-dB modulation bandwidth of at least 60 MHz—significantly higher than commercially available white lighting LEDs. Orthogonal frequency division multiplexing is employed as a modulation scheme. This enables the limited modulation bandwidth of the device to be fully used. Pre- and postequalization techniques, as well as adaptive data loading, are successfully applied to achieve a demonstration of wireless communication at speeds exceeding 3 Gb/s. To date, this is the fastest wireless VLC system using a single LED. Index

ORCID iDs

Tsonev, Dobroslav, Chun, Hyunchae, Rajbhandari, Sujan ORCID logoORCID: https://orcid.org/0000-0001-8742-118X, McKendry, Jonathan J. D. ORCID logoORCID: https://orcid.org/0000-0002-6379-3955, Videv, Stefan, Gu, Erdan ORCID logoORCID: https://orcid.org/0000-0002-7607-9902, Haji, Mohsin, Watson, Scott, Kelly, Anthony E., Faulkner, Graheme, Dawson, Martin D. ORCID logoORCID: https://orcid.org/0000-0002-6639-2989, Haas, Harald and O'Brien, Dominic;
  • Item type:Article
    ID code:47203
    Dates:
    Date
    Event
    1 April 2014
    Published
    6 January 2014
    Published Online
    24 December 2013
    Accepted
    Notes:This paper demonstrates record performance in high-speed modulation of gallium nitride LEDs for advanced visible light based Datacom applications. Visible light communications is a field of considerable current international interest, based on the vision of ‘LiFi’ (light fidelity) as a new networked, bi-directional communications infrastructure to complement and supplement WiFi. The bespoke devices concerned were developed at Strathclyde under an EPSRC Programme Grant conceived and led by Professor Dawson, which is currently setting international benchmarks in the field. The paper has been cited 133 times to date (Google Scholar).
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Science > Physics
    Department:Faculty of Science > Physics > Institute of Photonics
    Technology and Innovation Centre > Photonics
    Depositing user: Pure Administrator
    Date deposited:17 Mar 2014 09:32
    Last modified:22 Dec 2024 01:15
    URI:https://strathprints.strath.ac.uk/id/eprint/47203
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