LED visible light communication and their application

Abstract

LED(Light Emitting Diode) is an emitting device which energy is same to the bandgap energy of p-type and n-type semiconductor junction. Recently high brightness LED is used in fish-luring light and traffic signal light alternative of normal light bulb, and widely used in the area of display pannel. Moreover nowadays LED has been used as a back light of LCD display.Recently, visible light communication(VLC) using LED, that allow two-way serial data communication between LEDs over a distance of sveral centimeters or meters, has been widely studied in the area of digital information transmission along with illumination and display. In this paper, we present LED communication system and their applications. 키워드LED 가시광 통신, LED, VLC, 통신시스템