Open AccessModelling and analysis of M ‐ary variable pulse position modulation for visible light communications
Author(s) -
Yoo JongHo,
Kim Byung Wook,
Jung SungYoon
Publication year - 2015
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2014.0107
Subject(s) - visible light communication , pulse position modulation , transmitter , transmission (telecommunications) , computer science , modulation (music) , electronic engineering , data transmission , channel (broadcasting) , optical wireless , bit error rate , binary number , wireless , pulse amplitude modulation , real time computing , telecommunications , detector , computer network , pulse (music) , optics , engineering , mathematics , physics , light emitting diode , acoustics , arithmetic
Visible light communication (VLC) is an emerging communication paradigm that supports illumination and data transmission simultaneously. To provide dimming control functionality, a range of dimmable modulation methods have been exploited. Among them, the variable pulse position modulation (VPPM) scheme, which is deployed using the IEEE 802.15.7 VLC standard is very simple and easy to implement. On the other hand, it has a limited data rate because it just uses binary PPM for data transmission. This study proposes the M ‐ary VPPM ( M ‐VPPM) scheme to increase the data rate of the VPPM scheme. To evaluate the performance of this scheme, the modelling of the transmitter, optical wireless channel and the receiver for M ‐VPPM are provided. In addition, the error probability according to the dimming ratio and modulation order was analysed mathematically. The simulation results showed that the analytical bounds on the error probability are tight, which provides key insights into the performance trade‐off of M ‐VPPM in a dispersive VLC channel environment.