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Light Fidelity is referred to as Li-Fi. The physics professor Harald Haas of Germany presented the relatively new concept at the 2011 CED (concept, Entertainment, Design) Global Talk on Visible Light Communication (VLC) [1,4] . Light emitting diodes (LEDs) are used in Li-Fi, a wireless optical networking technology, to transmit data. Li-Fi is an acronym for visible light communication (VLC) technology, which conforms to IEEE (Institute of Electrical and Electronics Engineers) standard 802.11 and employs light as a medium to enable high-speed communication similar to Wi-Fi. The two technologies can be thought of as complementary. In this consideration, Wi-Fi is primarily used for general wireless coverage within buildings, while Li-Fi is perfect for high density wireless data coverage in confined areas and particularly helpful for applications in areas where radio interference issues are of concern [2].
Li-Fi outperforms Wi-Fi in terms of bandwidth, efficiency, connectivity, and security. In the lab, it has already reached high rates of more than 1 Gbps. There are several ways to take advantage of this medium by utilising the low cost of LEDs and lighting equipment. Li-Fi is the process of transferring data through light by using LED light bulbs instead of fibre in fibre optics [3].
Users can access the Internet wirelessly via both Wi-Fi and Li-Fi, and both technologies employ the electromagnetic spectrum to transport data. Visible light communication technology, or Li-Fi, is helpful for achieving fast wireless connection. The distinction is that Li-Fi technology employs light waves for transmission whereas Wi-Fi technology uses radio waves. Li-Fi, which is free from interference problems unlike Wi-Fi, is perfect for high density wireless data coverage inside a restricted space or room, while Wi-Fi is good for general wireless coverage within buildings, campuses, and compounds [4].
