Open Access3375-Gb/s RGB-LED based WDM visible light communication system employing PAM-8 modulation with phase shifted Manchester coding
Author(s) -
Nan Chi,
Mengjie Zhang,
Yingjun Zhou,
Jiaqi Zhao
Publication year - 2016
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.24.021663
Subject(s) - optics , visible light communication , rgb color model , computer science , wavelength division multiplexing , phase modulation , coding (social sciences) , modulation (music) , optical communication , phase noise , physics , telecommunications , optoelectronics , light emitting diode , wavelength , artificial intelligence , mathematics , statistics , acoustics
Optical background noise and second-order nonlinear distortions are two main challenges faced by indoor high-speed VLC system. In this paper, a novel phase shifted Manchester (PS-Manchester) coding based on PAM-8 is proposed and experimentally demonstrated to mitigate these noise and distortions. With the aid of PS-Manchester coding and WDM, a total data rate of 3.375-Gb/s can be successfully achieved in the RGB-LED based VLC system. The BER is under 7% HD-FEC limit of 3.8x10 -3 after 1-m indoor free space transmission. To the best of our knowledge, this is the highest data rate ever achieved in PAM VLC systems.