D. Tsonev, H. Chun, S. Rajbhandari, J. McKendry, S. Videv, E. Gu, M. Haji, S. Watson, A. Kelly, G. Faulkner, M. Dawson, H. Haas, D. O’brien
tlooto Summary
A 3-Gb/s single-LED OFDM-based wireless VLC link using a Gallium Nitride μ-LED is demonstrated.
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.
Citation format
TSONEV, D., et al. A 3-gb/s single-led OFDM-Based wireless VLC link using a gallium nitride $\mu{\rm LED}$. IEEE PHOTONICS TECHNOLOGY LETTERS, 2014, 26: 637–640.