Adaptive filtering for white-light LED visible light communication

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

doi:10.1117/1.OE.56.1.016115

28 January 2017 Adaptive filtering for white-light LED visible light communication

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

Author Affiliations +

Optical Engineering, Vol. 56, Issue 1, 016115 (January 2017). https://doi.org/10.1117/1.OE.56.1.016115

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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Chin-Wei Hsu, Guan-Hong Chen, Liang-Yu Wei, Chi-Wai Chow, I-Cheng Lu, Yen-Liang Liu, Hsing-Yu Chen, Chien-Hung Yeh, and Yang Liu "Adaptive filtering for white-light LED visible light communication," Optical Engineering 56(1), 016115 (28 January 2017). https://doi.org/10.1117/1.OE.56.1.016115

Received: 26 November 2016; Accepted: 10 January 2017; Published: 28 January 2017

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