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Optical Engineering

Adaptive filtering for white-light LED visible light communication
Author(s): Chin-Wei Hsu; Guan-Hong Chen; Liang-Yu Wei; Chi-Wai Chow; I-Cheng Lu; Yen-Liang Liu; Hsing-Yu Chen; Chien-Hung Yeh; Yang Liu
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Paper 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.

Paper Details

Date Published: 28 January 2017
PDF: 4 pages
Opt. Eng. 56(1) 016115 doi: 10.1117/1.OE.56.1.016115
Published in: Optical Engineering Volume 56, Issue 1
Show Author Affiliations
Chin-Wei Hsu, National Chiao Tung Univ. (Taiwan)
Guan-Hong Chen, National Chiao Tung Univ. (Taiwan)
Liang-Yu Wei, National Chiao Tung Univ. (Taiwan)
Chi-Wai Chow, National Chiao Tung Univ. (Taiwan)
I-Cheng Lu, Industrial Technology Research Institute (Taiwan)
Yen-Liang Liu, Industrial Technology Research Institute (Taiwan)
Hsing-Yu Chen, Industrial Technology Research Institute (Taiwan)
Chien-Hung Yeh, Feng Chia Univ. (Taiwan)
Yang Liu, Philips Mobile Display Systems (Hong Kong, China)

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