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Document Type

Review

Keywords

Communication Engineering

Abstract

Wireless Fidelity (Wi-Fi) is particularly popular today. Every place hashotspots to access the internet via Wi-Fi, including homes, offices, colleges, and otherpublic places. This increased number of users, and hence the use of bandwidth, has led toradio spectrum congestion. Thus, in the year of 2011, Light-Fidelity (Li-Fi) wasintroduced, which applies a visible light region for data transmission, to solve this radiocrisis problem. This visible part of the spectrum was 10,000 times big compared to thepart utilized in the Wi-Fi radio. Furthermore, Li-Fi was a sub-set of Visible LightCommunication (VLC), using Light-Emitting Diode (LED) bulbs for transmitting datautilizing light-medium. This paper reviews the differences between Li-Fi technology andwireless types. It Also focuses on the architecture, components, functioning, modulationtechnologies, and applications of Li-Fi.

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