Visible light communication(VLC)technology is a new type of wireless communication technology,which employs a light source as the carrier of information to realize illumination and communication simultaneously.This pa...Visible light communication(VLC)technology is a new type of wireless communication technology,which employs a light source as the carrier of information to realize illumination and communication simultaneously.This paper adopts a single In Ga N/Ga N-base multi-quantum well blue micro-light emitting diode(LED)as the light source,designs pre-emphasis circuit,LED driver circuit,impedance matching network,etc.,and builds a high-speed real-time VLC system.It has been verified that the LED achieves a 3 d B modulation bandwidth of 450 MHz or more;and the real-time communication rate reaches over 800 Mbit/s at a distance of 2 m.The communication bit error rate(BER)is as low as 3.02×10^(-12)at a communication rate of 622 Mbit/s.Experimental indicators including 3 d B bandwidth,communication rate,and communication BER are all taken into account.Therefore,this VLC system supports high-quality high-speed real-time communication.展开更多
基金supported by the Science of Technology Program of Guangdong Province(No.2015B010110002)the Science Technology Program of Guangzhou(No.201804010166)
文摘Visible light communication(VLC)technology is a new type of wireless communication technology,which employs a light source as the carrier of information to realize illumination and communication simultaneously.This paper adopts a single In Ga N/Ga N-base multi-quantum well blue micro-light emitting diode(LED)as the light source,designs pre-emphasis circuit,LED driver circuit,impedance matching network,etc.,and builds a high-speed real-time VLC system.It has been verified that the LED achieves a 3 d B modulation bandwidth of 450 MHz or more;and the real-time communication rate reaches over 800 Mbit/s at a distance of 2 m.The communication bit error rate(BER)is as low as 3.02×10^(-12)at a communication rate of 622 Mbit/s.Experimental indicators including 3 d B bandwidth,communication rate,and communication BER are all taken into account.Therefore,this VLC system supports high-quality high-speed real-time communication.
