International Journal of Science and Research (IJSR) ISSN (Online): 2319-7064 Index Copernicus Value (2013): 6.14 | Impact Factor (2013): 4.438 Volume 4 Issue 6, June 2015 www.ijsr.net Licensed Under Creative Commons Attribution CC BY Study on Light-Fidelity (Li-Fi) and a Solution to Penetration Through Wall Problem Geocey Shejy 1 , Kapil Manikani 2 , Jinesh Nair 3 1 Assistant Professor of MCA, Vivekanand Education Society’s Institute of Technology, Mumbai, India 2, 3 Student of MCA, Vivekanad Education Society’s Institute of Technology, Mumbai, India Abstract: There is no doubt that wireless communications play a crucial role in today’s society. Information through wireless network has the most desired value. Whoever has access to wireless networks has a very powerful tool in his/her hands. One of the factors influencing the gap between the developed and developing countries is the information availability. Access to the Internet, which can be provided by wireless networks, means the access to the world’s largest library but it would be great if everybody could have advantage of that. It is important not only because of the educational reasons but also for general development. Networks assuring fast and reliable exchange of data will positively affect country’s production and will result in greater efficiency of people’s work and these factors lead to the generation of Li-Fi.Li-Fi technology is nothing but Light-Fidelity communication systems .It is the fastest and cheapest wireless communication systems and is the optical version of the Wi-Fi. The term was first used by Harald Haas in TED Global talk. The technology works by adapting LEDs to send digital information, invisible to the naked eye. A light sensor on a device picks up the digital information sent by the LED, which enables it to be processed by a computer. It is similar to the Wi-Fi except that it uses Light waves instead of Radio waves. Keywords: Li-Fi Technology, Light Sensor, LED, TED Global Talk, Wireless Communication etc 1. Introduction In simple terms, Li-Fi can be thought of as a light-based, Wi- Fi. That is, it uses light instead of radio waves to transmit information and instead of Wi-Fi modems, Li-Fi would use transceiver-fitted LED lamps that can light a room as well as transmit and receive information. Since simple light bulbs are used, there can technically be any number of access points. This technology uses a part of the electromagnetic spectrum that is still not greatly utilized ‘The Visible Spectrum’. Light is infact very much part of our lives for millions and millions of years and does not have any major ill effect. Professor Harald Haas, from the University of Edinburgh in the UK, is widely recognised as the original founder of Li-Fi. He coined the term Li-Fi and is Chair of Mobile Communications at the University of Edinburgh and co- founder of pureLiFi. The general term visible light communication (VLC), includes any use of the visible light portion of the electromagnetic spectrum to transmit information. The D-Light project at Edinburgh's Institute for Digital Communications was funded from January 2010 to January 2012. Haas promoted this technology in his 2011 TED Global talk and helped start a company to market it. PureLi-Fi, formerly pureVLC, is an original equipment manufacturer (OEM) firm set up to commercialize Li-Fi products for integration with existing LED-lighting systems. Figure 1: Diagram demonstrating the shift from Wi-Fi to Li- Fi In October 2011, companies and industry groups formed the Li-Fi Consortium, to promote high-speed optical wireless systems and to overcome the limited amount of radio-based wireless spectrum available by exploiting a completely different part of the electromagnetic spectrum. A number of companies offer uni-directional VLC products which is not the same as Li-Fi.VLC technology was exhibited in 2012 using Li-Fi. By August 2013, data rates of over 1.6 Gbit/s were demonstrated over a single color LED. In September 2013, a press release said that Li-Fi, or VLC systems in general, do not require line-of-sight conditions. In October 2013, it was reported Chinese manufacturers were working on Li-Fi development kits. In April 2014, the Russian company Stins Coman announced the development of a Li-Fi wireless local network called BeamCaster. Their current module transfers data at 1.25 gigabytes per second but foresee boosting speeds up to 5 GB/second in the near future. Paper ID: SUB155685 1444
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International Journal of Science and Research (IJSR) ISSN (Online): 2319-7064
Index Copernicus Value (2013): 6.14 | Impact Factor (2013): 4.438
Volume 4 Issue 6, June 2015
www.ijsr.net Licensed Under Creative Commons Attribution CC BY
Study on Light-Fidelity (Li-Fi) and a Solution to
Penetration Through Wall Problem
Geocey Shejy1, Kapil Manikani
2, Jinesh Nair
3
1Assistant Professor of MCA, Vivekanand Education Society’s Institute of Technology, Mumbai, India
2, 3 Student of MCA, Vivekanad Education Society’s Institute of Technology, Mumbai, India
Abstract: There is no doubt that wireless communications play a crucial role in today’s society. Information through wireless network
has the most desired value. Whoever has access to wireless networks has a very powerful tool in his/her hands. One of the factors
influencing the gap between the developed and developing countries is the information availability. Access to the Internet, which can be
provided by wireless networks, means the access to the world’s largest library but it would be great if everybody could have advantage of
that. It is important not only because of the educational reasons but also for general development. Networks assuring fast and reliable
exchange of data will positively affect country’s production and will result in greater efficiency of people’s work and these factors lead
to the generation of Li-Fi.Li-Fi technology is nothing but Light-Fidelity communication systems .It is the fastest and cheapest wireless
communication systems and is the optical version of the Wi-Fi. The term was first used by Harald Haas in TED Global talk. The
technology works by adapting LEDs to send digital information, invisible to the naked eye. A light sensor on a device picks up the
digital information sent by the LED, which enables it to be processed by a computer. It is similar to the Wi-Fi except that it uses Light
waves instead of Radio waves.
Keywords: Li-Fi Technology, Light Sensor, LED, TED Global Talk, Wireless Communication etc
1. Introduction
In simple terms, Li-Fi can be thought of as a light-based, Wi-
Fi. That is, it uses light instead of radio waves to transmit
information and instead of Wi-Fi modems, Li-Fi would use
transceiver-fitted LED lamps that can light a room as well as
transmit and receive information. Since simple light bulbs are
used, there can technically be any number of access points.
This technology uses a part of the electromagnetic spectrum
that is still not greatly utilized ‘The Visible Spectrum’. Light
is infact very much part of our lives for millions and millions
of years and does not have any major ill effect.
Professor Harald Haas, from the University of Edinburgh in
the UK, is widely recognised as the original founder of Li-Fi.
He coined the term Li-Fi and is Chair of Mobile
Communications at the University of Edinburgh and co-
founder of pureLiFi. The general term visible light
communication (VLC), includes any use of the visible light
portion of the electromagnetic spectrum to transmit
information. The D-Light project at Edinburgh's Institute for
Digital Communications was funded from January 2010 to
January 2012. Haas promoted this technology in his 2011
TED Global talk and helped start a company to market it.
PureLi-Fi, formerly pureVLC, is an original equipment
manufacturer (OEM) firm set up to commercialize Li-Fi
products for integration with existing LED-lighting systems.
Figure 1: Diagram demonstrating the shift from Wi-Fi to Li-
Fi
In October 2011, companies and industry groups formed the
Li-Fi Consortium, to promote high-speed optical wireless
systems and to overcome the limited amount of radio-based
wireless spectrum available by exploiting a completely
different part of the electromagnetic spectrum. A number of
companies offer uni-directional VLC products which is not
the same as Li-Fi.VLC technology was exhibited in 2012
using Li-Fi. By August 2013, data rates of over 1.6 Gbit/s
were demonstrated over a single color LED. In September
2013, a press release said that Li-Fi, or VLC systems in
general, do not require line-of-sight conditions. In October
2013, it was reported Chinese manufacturers were working
on Li-Fi development kits. In April 2014, the Russian
company Stins Coman announced the development of a Li-Fi
wireless local network called BeamCaster. Their current
module transfers data at 1.25 gigabytes per second but
foresee boosting speeds up to 5 GB/second in the near future.