High Bandwidth Visible Light Communications Based on a Post-Equalization Circuit

Author

Honglei Li ; Xiongbin Chen ; Beiju Huang ; Danying Tang ; Hongda Chen

Author_Institution

State Key Lab. of Integrated Optoelectron., Inst. of Semicond., Beijing, China

Volume

26

Issue

2

fYear

2014

fDate

Jan.15, 2014

Firstpage

119

Lastpage

122

Abstract

A research in extending bandwidth of the visible light communication (VLC) system that uses phosphorescent white LED has been reported in this letter. Slow response of the phosphorescent component limits the modulation bandwidth of white LED to the lower MHz range. In this letter, we present a post-equalization circuit that contains two passive equalizers and one active equalizer. With blue-filtering and the post-equalization circuit, a bandwidth of 151 MHz has been achieved in our VLC system, which allows OOK-NRZ data transmission up to 340 Mb/s. The VLC link operates at 43 cm using a single one Watt white LED, and the bit-error-ratio was below 2×10^-3, which is within the forward error correction limit.

Keywords

equalisers; optical communication; organic light emitting diodes; phosphorescence; OOK-NRZ data transmission; VLC system; active equalizer; bit-error-ratio; blue-filtering; modulation bandwidth; passive equalizers; phosphorescent white LED; post-equalization circuit; power 1 W; visible light communication system; wavelength 43 cm; Bandwidth; Bit error rate; Equalizers; Light emitting diodes; Modulation; Optical filters; Receivers; Visible light communication; bandwidth; phosphorescent white LED; post-equalization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2290026

Filename

6657715