A 3-Gb/s Single-LED OFDM-Based Wireless VLC Link Using a Gallium Nitride μLED

D. Tsonev, H. Chun, Sujan Rajbhandari, J. J. D. McKendry, S. Videv, E. Gu, M. Haji, S. Watson, A. E. Kelly, G. Faulkner, M. D. Dawson, H. Haas, D. O'Brien

Research output: Contribution to journalLetter

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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.
Original languageEnglish
Pages (from-to)637-640
JournalIEEE Photonics Technology Letters
Volume26
Issue number7
DOIs
Publication statusPublished - 2 Jan 2014

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Keywords

  • III-V semiconductors
  • OFDM modulation
  • equalisers
  • gallium compounds
  • light emitting diodes
  • optical communication equipment
  • optical links
  • wide band gap semiconductors
  • GaN
  • adaptive data loading
  • bit rate 3 Gbit/s
  • light emitting diode
  • microLED
  • modulation bandwidth
  • orthogonal frequency division multiplexing
  • postequalization technique
  • preequalization technique
  • single LED OFDM based wireless VLC Link
  • size 50 mum
  • visible light communication system
  • wireless communication
  • OFDM
  • Visible light communication
  • optical modulation
  • optical wireless communication
  • Bandwidth
  • Light emitting diodes
  • Loading
  • Modulation
  • Signal to noise ratio
  • Wireless communication

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