Li-Fi: The Optical Version of Wi-Fi

Now a days, wireless communications has become fundamental to our lives and we transmit a lot of data every day. The main way we transmit wireless data is by using electromagnetic waves, in particular radio waves. There is an emerging wireless communication with a promising future and which can be a complement of radio waves i. e LI-FI (Light fidelity). This technology describes Data Through Illuminationtaking the fiber out of fiber optics by sending data through an LED light bulb that varies in intensity faster than the human eye can follow. This paper provides an up-to-date survey of Light fidelity. In addition, relevant topic such as issues regarding radio waves& how VLC can be possible solution to the wireless spectrum shortage.