articleIEEE Photonics Technology LettersJan 31, 2014GREEN OA

A 3-Gb/s Single-LED OFDM-Based Wireless VLC Link Using a Gallium Nitride $\mu{\rm LED}$

DTDobroslav TsonevHCHyunchae ChunSRSujan RajbhandariJJJonathan J. D. McKendrySVStefan Videv

University of Edinburgh · University of Oxford · +2 more institutions

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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.

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Topics & keywords

Topics
Keywords
  • Visible light communication
  • Light-emitting diode
  • Orthogonal frequency-division multiplexing
  • Gallium nitride
  • Optoelectronics
  • Wireless
  • Bandwidth (computing)
  • Modulation (music)
UN Sustainable Development Goals
  • Affordable and clean energy
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