Recently, the illumination LED draws great attraction
due to its expected wide deployment as a illumination
infrastructure. Many research results have been reported
to use the illumination LEDs as a communication source
[1-5]. IEEE standard committee is active for visible light
communication in IEEE 802.15 [7]. The remarkable
researches on fundamental analysis and experiments have
been performed [2-4] to ensure the communication
performance using illumination LEDs. Also, a PPMcoded
PWM signal has been reported [8] to provide the
tags for each LED in a power LED lighting system.
In this paper, we propose a PWM-based modulation
signal format which can support data transmission over
dimming control signal for LED illumination.