Analysis of Wireless Energy Harvesting Technology in Visible Light Communication System Based on Photocell Detector

In this paper,silicon photocell array was used as the detector for the receiver to establish a visible light communication(VLC)system model in Matlab/Simulink environment.The U-I and output power characteristics of silicon photocell array were studied through simulation,meanwhile,the effects of junction capacitance and illumination value on the response bandwidth were analyzed.The results show that smaller junction capacitance results in greater response bandwidth of silicon photocell.When the junction capacitance is 2pf,the maximum response bandwidth can reach 10 MHz,which can satisfy the application requirements of visible light communication system for wireless communication and wireless energy harvesting simultaneously.