Visible Light Communication with Color and Brightness Control of RGB LEDs

ETRI Journal

关键词: dimming control;    VPPM;    variable pulse position modulation;    PWM;    pulse width modulation;    LED;    light-emitting diode;    VLC;    Visible light communication;   

Others  :  1193716
DOI  :  10.4218/etrij.13.0212.0425

【 摘 要 】

We propose a visible light communication system in which the color and brightness are controllable. Pulse width modulation and variable pulse position modulation (VPPM) schemes are used to control the color and brightness, respectively. A digital algorithm to decode VPPM signals is suggested and implemented. A seamless transmission is observed in a testbed experiment under various environmental conditions. The proposed scheme can be applied to emotional-lighting-based wireless optical communication.

   

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