Adaptive filtering for white-light LED visible light communication

作者：Hsu Chin Wei; Chen Guan Hong; Wei Liang Yu; Chow Chi Wai^*; Lu I Cheng; Liu Yen Liang; Chen Hsing Yu; Yeh Chien Hung; Liu Yang

来源：Optical Engineering, 2017, 56(1): 016115.

DOI：10.1117/1.OE.56.1.016115

• optical communications
• visible light communication
• optical wireless communication

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.

• 出版日期2017-1