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Data and Voice Communication at Very High Speed using Li-Fi




LI-FI, LED bulbs, TED


We are living in the era of modernization. In the 21st century more people are highly depend on electronic and communication. Now a day’s more people are depending on Internet to accomplish their work through wired or wireless network. As number of users gets increases, proportionally the speed of wireless network decreases. Though Wi-F can give the speed up to 150mbps, it is still insufficient as more and more users are tapped in with their devices. To overcome this problem of WI-FI, we are introducing concept of LI-FI. LI-FI is new emerging technology to provide the connectivity to new localized wireless network environment. LI-FI is the term which is coined for fast and cheap wireless communication system, which is an optical version of WI-FI. The main principal of this Li-Fi is we can transmit the data through light illumination by using light-emitting diode. Data through illumination taking fiber out fiber optics by sending data through switching LED bulb on and off within nanoseconds which is too faster than human eye that can follow. By using this Li-Fi technology a one-watt LED light bulb provide net connectivity to four computers. The LED bulb should be kept on to transfer the data. The light waves can’t travel across the wall which is made up of short range, this make a more secure from hacking. Direct line of light is not compulsory to transfer the signal. The term Li-Fi was first coined by Professor Herald Haas in TED Global talk Visible Light Communication. He is from the University of Edinburgh in the UK. Very simply , If the LED is on then it transfer digital 1, if it’s off then it transfer 0, Haas says that “They can be switched off and on very rapidly”, which gives better opportunities to transfer the data.

Other Details

Paper ID: IJSRDV3I60362
Published in: Volume : 3, Issue : 6
Publication Date: 01/09/2015
Page(s): 656-657

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