Design of Voltage Reference Comparator Circuit for Receiver Circuit in VLC System

Visible light communication (VLC) system is a wireless communication from light of the light emitting diode (LED). In this work, we design the voltage reference comparator circuit method for the receiver circuit with data communication via white LED. In this experiment, we evaluate the VLC system of the transmitter circuit and receiver circuit by using bits data communication with the distance 50 to 100 cm. We measure the frequency of the white LED signal detection between the transmitter circuit and the receiver circuit, which the frequency uses about 9.615 kHz. This comparator circuit method can be used to refer the voltage signals of the receiver circuit in VLC system.