Design and performance analysis of visible light communication system through simulation

An NRZ OOK visible light communication system is designed and simulated, using a white LED of wavelength 450 nm and a Photodetector. Ambient light noise source such as fluorescent lamp generated by conventional ballast is one of the important sources of degradation which affects the performance of the communication system. By using rectangular optical filter before the photodiode at the receiver, it reduces the ambient noise, improves the BER and clear eye diagram is achieved. Simulation of VLC system is done by using optisystem software. In this paper, performance analysis of optical to electrical power conversion, BER, Threshold, eye opening is done with respect to distance between the transmitter and receiver.