PWM-based PPM format for dimming control in visible light communication system

Author

Jang, Hyung-Joon ; Choi, Joon-Ho ; Ghassemlooy, Z. ; Lee, Chung Ghiu

Author_Institution

Dept. of Electron. Eng., Chosun Univ., Gwangju, South Korea

fYear

2012

fDate

18-20 July 2012

Firstpage

1

Lastpage

5

Abstract

We report simulation results of pulse width modulation (PWM)-based pulse position modulation (PPM) signal format for visible light communication systems. For simultaneous operation of data transmission and dimming control, PPM data format is added to PWM dimming control signal. To show dimming control, the PWM duty ratio is changed from 40 % to 80 % during PPM data transmission. The PWM frame rate is set to 1 kHz to avoid flickering in human eyes. The PPM data rate is set to 20 kb/s. The waveforms, eye diagrams and BER of this system are calculated. The simulation shows the BER of 1×10^-5 is achievable.

Keywords

error statistics; optical communication; pulse position modulation; pulse width modulation; BER; PWM-based PPM format; dimming control; pulse position modulation; pulse width modulation; signal format; visible light communication system; Light emitting diodes; Lighting; Optical pulses; Optical receivers; Optical reflection; Optical transmitters; Pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2012 8th International Symposium on

Conference_Location

Poznan

Print_ISBN

978-1-4577-1472-6

Type

conf

DOI

10.1109/CSNDSP.2012.6292778

Filename

6292778