Lasers, Fiber Optics, and Communications

Adaptive filtering for white-light LED visible light communication

[+] Author Affiliations
Chin-Wei Hsu, Guan-Hong Chen, Liang-Yu Wei, Chi-Wai Chow

National Chiao Tung University, Department of Photonics and Institute of Electro-Optical Engineering, Hsinchu 30010, Taiwan

I-Cheng Lu, Yen-Liang Liu, Hsing-Yu Chen

Industrial Technology Research Institute, Hsinchu 310, Taiwan

Chien-Hung Yeh

Feng Chia University, Department of Photonics, Taichung 40724, Taiwan

Yang Liu

Philips Electronics Ltd., N.T., Hong Kong

Opt. Eng. 56(1), 016115 (Jan 28, 2017). doi:10.1117/1.OE.56.1.016115
History: Received November 26, 2016; Accepted January 10, 2017
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Abstract.  White-light phosphor-based light-emitting diode (LED) can be used to provide lighting and visible light communication (VLC) simultaneously. However, the long relaxation time of phosphor can reduce the modulation bandwidth and limit the VLC data rate. Recent VLC works focus on improving the LED modulation bandwidths. Here, we propose and demonstrate the use of adaptive Volterra filtering (AVF) to increase the data rate of a white-light LED VLC system. The detailed algorithm and implementation of the AVF for the VLC system have been discussed. Using our proposed electrical frontend circuit and the proposed AVF, a significant data rate enhancement to 700.68  Mbit/s is achieved after 1-m free-space transmission using a single white-light phosphor-based LED.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Chin-Wei Hsu ; Guan-Hong Chen ; Liang-Yu Wei ; Chi-Wai Chow ; I-Cheng Lu, et al.
"Adaptive filtering for white-light LED visible light communication", Opt. Eng. 56(1), 016115 (Jan 28, 2017). ; http://dx.doi.org/10.1117/1.OE.56.1.016115


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