The improvement of the wireless communication leads to advance research in LiFi technology through Visible Light Communications (VLC) Technology. This paper objective is to study and describe the LiFi technology. To resolve the issues of scalability, availability and security, we have come up with the concept of transmitting data wirelessly through light using visible light communication (VLC) technology. With the innovation in technology and the number of users, the existing radio-wave spectrum fails to accommodate this need. The immense use of Li-Fi may solve some bottleneck of data transmission in Wi-Fi technology. Li-Fi comprises a wide range of frequencies and wavelengths, from the Infrared through visible and down to the Ultraviolet spectrum. The term Li-Fi states to visible light communication (VLC) technology that uses as medium to deliver high-speed communication in a fashion similar to Wi-Fi. The development of the wireless communication leads to advance research in LiFi technology. Li-Fi is a wireless technology that uses light emitting diodes (LEDs) for transmission of data. Light based communication system is the backbone of the future of the communication system. This technology is very new and was proposed by the German physicist Harald Haas in 2011.
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