Date of Publication :7th March 2017

Abstract: In Information-technology, a protocol is the special Set of rules that end points in a telecommunication connection use when they Communicate. Protocols specify interactions between the communicating entities. Wireless protocol's exchange information through the air waves i.e., without wires. Light Fidelity (Li-Fi is one of the wireless protocol and it is a visible light communication system running wireless communications travelling at Very high speeds. Li-Fi uses common household Light Emitting Diodes .(LED) light bulbs to enable data transfer, boosting speeds of upto 224 gigabits per second. LIFI is similar to that of Wi-Fi. Both transmit data electromagnetically. Wi-Fi uses radio waves where as Li-Fi uses visible light. Li-Fi accommodates a photo detector to receive light signals and a signal processing element to convert the data into 'Stream able content'. Light fidelity (Li-Fi) is a bidirectional, high speed and fully networked wireless communication technology similar to Wi-Fi. The high speeds of Li-Fi could make a huge impact on internet of things also .Li-Fi is more secure than the Wi-Fi. Since homes and offices already have LED bulbs for lighting purposes the same source of light can be used to transmit data. therefore it is very efficient in terms of costs as well as energy. In the present paper, the functions and performances of Li-Fi are discussed.

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