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

Jang, Hyung-Joon, Choi, Joon-Ho, Ghassemlooy, Zabih and Lee, Chung Ghiu (2012) PWM-based PPM format for dimming control in visible light communication system. In: CSNDSP 2012: 8th International Symposium on Communication Systems, Networks and Digital Signal Processing, 18-20 July 2012, Poznan, Poland.

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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.

Item Type: Conference or Workshop Item (Paper)
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
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Depositing User: Sarah Howells
Date Deposited: 03 Aug 2012 11:00
Last Modified: 17 Dec 2023 12:51

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