Apparatus and method for visible light communication

This excellent visible-light wireless technologies, the reception performance is disclosed in the brightness adjustment of the light based on the signal VPPM. To this end, the visible-light wireless communication device according to an embodiment of the present invention includes a physical layer (Physical-layer) information of the preamble generator, the transmission packet is dimming information and the transmission packet contains a target dimming level of generating a preamble signal first fixed dimming VPPM modulator, a transmission signal processor which generates the transmission data by performing signal processing for the visible light transmitted to the data to be transmitted for modulating a VPPM signals of the PHY header, header generator, a PHY header for generating comprises a predetermined ratio .; By synthesizing a variable dimming VPPM modulator, and the preamble signal, the 1 VPPM signal and a 2 VPPM signal for modulating transmission data to claim 2 VPPM signal of the target dimming level of the transmission packet comprises a signal synthesizer for forming a transmission packet It characterized.