You can install optisystem 13 or 14 version and design a VLC system using the LED transmitter and photodetector. And the transmission medium is free space.
I did my research on the dimming property of VLC using optisystem 13. You can check this paper to understand the basic structure of an indoor visible light communication system.
Can give to myeasypaper.com 4 stars, as my work was perfect as for ESL student, but when my friend wanted to order a native speaker, they told that are ESL-students oriented website. š° They should add native writers. But my paper was really good, so Iām satisfied.šš»