Li-Fi: An infallible standard for future indoor communication

摘要

Li-Fi or Light Fidelity is a concept more often considered related to Wi-Fi which is Wireless Fidelity, but is far more dissimilar right from the core concept. Li-Fi as opposed to Radio waves in Wi-Fi uses Visible Light for bringing about the communication between two devices. This paper throws light on how Light (VLC) is a feasible solution to the existing problems of radio waves with some useful insights on Li-Fi and how it can improve indoor data transfers and communication. The whole concept originated with the advent of the VLC i.e Visible Light Communication. The idea here is to think out of the radio bandwidth which we are so used to, that we actually use it in 99% of all our wireless communication, but the scenario is changing as Radio waves have some disadvantages like interference, low bandwidth etc. that need a thoughtful update or entire replacement, if need be, this is where the VLC comes in for the rescue. If we look at the electromagnetic spectrum we can see how small the bandwidth of Radio waves is and that there are still wide range of frequencies that we can use, in this case the Visible Light which falls between the ranges 350nm-750nm wavelength. Li-Fi uses this band of frequencies for bringing about the communication between two devices. Hence Li-Fi can effectively share the burden on current Wi-Fi and eventually replace it in many indoor places like Hospitals, Military bases, Offices etc.