Open Access16 Gbit/s phosphorescent white LED based VLC transmission using a cascaded pre-equalization circuit and a differential outputs PIN receiver
Author(s) -
Xingxing Huang,
Zhixin Wang,
Jianyang Shi,
Yiguang Wang,
Nan Chi
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.022034
Subject(s) - visible light communication , equalization (audio) , bandwidth (computing) , computer science , optics , quadrature amplitude modulation , gigabit , transmission (telecommunications) , electronic engineering , bit error rate , physics , telecommunications , light emitting diode , engineering , decoding methods
We proposed a cascaded amplitude equalizer used for high speed visible light communications (VLC) system. With the cascaded pre-equalization circuit, the -3dB bandwidth of VLC system can be extended from 17MHz to 366MHz using a commercially available phosphorescent white LED, a blue filter and a differential outputs PIN receiver. The data rate is 1.60Gbit/s exploiting 16QAM-OFDM with 400MHz modulation bandwidth over 1m free-space transmission under pre-forward error correction (pre-FEC) limit of 3.8 × 10(-3). To our knowledge, this is the highest data rate ever achieved by using a commercially available phosphorescent white LED in VLC system.