Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 26, Issue 7, Pages 637-640Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2013.2297621
Keywords
Visible light communication; OFDM; optical modulation; optical wireless communication
Funding
- U.K. Engineering and Physical Sciences Research Council [EP/K00042X/1]
- EPSRC [EP/K00042X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1097351, EP/K00042X/1] Funding Source: researchfish
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This letter presents a visible light communication (VLC) system based on a single 50-mu m 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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