The Visible Light Communication (VLC) is the technology for sending information by flickering visible light at insensible speed. This is the principle of sending data by detecting "On/Off" of lights, where "On" is digit "1" or “Off” is digit “0”. VLC is available where radio propagation is limited such as the interiors of hospitals or companies. In addition, because communication is available only in the visible range of LEDs, high security is guaranteed. Since LEDs are flickered at tremendously high speed, both illumination and communication are possible.
For the indoor Visible Light Communication (VLC) based on white LED as a new communication system, a channel model has not been established. Its measurement and establishment are still in its exploratory stages.
Kim Hyon Chol, a researcher at the Faculty of Communication, has summarized the exposition of indoor VLC links and conducted a theoretical and experimental analysis of the photon model of the VLC system from a detailed point of view.
The proposed indoor light channel models can be used in VLC for several indoor environments.