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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 7538–7543

Dimming-discrete-multi-tone (DMT) for simultaneous color control and high speed visible light communication

Jiun-Yu Sung, Chi-Wai Chow, and Chien-Hung Yeh  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 7538-7543 (2014)

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Visible light communication (VLC) using LEDs has attracted significant attention recently for the future secure, license-free and electromagnetic-interference (EMI)-free optical wireless communication. Dimming technique in LED lamp is advantageous for energy efficiency. Color control can be performed in the red-green-blue (RGB) LEDs by using dimming technique. It is highly desirable to employ dimming technique to provide simultaneous color and dimming control and high speed VLC. Here, we proposed and demonstrated a LED dimming control using dimming-discrete-multi-tone (DMT) modulation. High speed DMT-based VLC with simultaneous color and dimming control is demonstrated for the first time to the best of our knowledge. Demonstration and analyses for several modulation conditions and transmission distances are performed, for instance, demonstrating the data rate of 103.5 Mb/s (using RGB LED) with fast Fourier transform (FFT) size of 512.

© 2014 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications
(230.3670) Optical devices : Light-emitting diodes

ToC Category:
Optical Communications

Original Manuscript: October 28, 2013
Revised Manuscript: December 18, 2013
Manuscript Accepted: December 19, 2013
Published: March 25, 2014

Jiun-Yu Sung, Chi-Wai Chow, and Chien-Hung Yeh, "Dimming-discrete-multi-tone (DMT) for simultaneous color control and high speed visible light communication," Opt. Express 22, 7538-7543 (2014)

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