Based on theories of transmitting information with light, the term VLC has recently appeared, specifically in sixth-generation communications.
Data is transmitted in VLC systems by modulating light.
We have two choices for using the light
The first involves blue-colored LEDs with wide-band phosphors that produce white light.
The Second is RGB LEDs. It is preferable to a phosphorous-based white LED to improve the data rate because the slow response of the phosphors limits the modulation.
RGB LEDs offer the possibility of wavelength division multiplexing.
(WDM), which further increases overall transmission capacity. However, in order to implement high-speed wireless connectivity.