Li-Fi: Illuminating the Future of Internet

In a technologically advancing world owing to the development in IoT, VR and AR applications, more devices are being required to be internet dependent. In such a scenario, the dearth of the radio frequency spectrum becomes a significant issue that needs to be tackled. In this paper, we discuss about a recently proposed and promising technology of implementing light to obtain internet connectivity, developed from the roots of optical wireless communication. Since this technology is primarily dependent on light it opens a new realm to safer and faster internet connectivity when compared to its already existing counterpart Wi-Fi which uses radio frequencies for communication. A detailed description of the devices and components required for this system, method of signal transmission and channel model adopted are outlaid in this paper. Additionally, a descriptive comparison between the two internet access methodologies is elaborated with further insights about its underlying advantages and subsequent applications that have been developed from this new technology.