VLC systems using commercial light emitting diode (LED) offer provision of simultaneous data transmission and illumination. However, limited modulation bandwidth and non-linear distortions are the main challenges faced by VLC designs in achieving high transmission data rates. Wavelength-division multiplexing in VLC (WDM-VLC) can improve the data rates to meet gigabit/s data standards. In this paper, we study the VLC data transmission using a commercially available red-green-blue-amber (RGBA) LED model. With quadrature amplitude modulation based discrete multi-tone (QAM-DMT) transmission, we demonstrate that proposed VLC system can achieve aggregate transmission rate of 2.1 Gb/s at bit error rate (BER) well below 2×10-3, which is typical hard-decision forward error correction (FEC) threshold.
Rakesh Krishna VS and Ivan B. Djordjevic, "DMT visible light communication using commercial RGBA LEDs," Proc. SPIE 10560, Metro and Data Center Optical Networks and Short-Reach Links, 105600J (Presented at SPIE OPTO: January 31, 2018; Published: 30 January 2018); https://doi.org/10.1117/12.2288784.
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