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 MUNEEB SOHAIL (091)
 BILAL RAJAR (074)
 TALHA AHMED(065)
21 DECEMBER 2015
“USMAN INSTITUTE OF TECHNOLOGY”
Affiliated with NED UNIVERSITY
ENGINEERING & TECHNOLOGY
1
Content:-
 Why Li-Fi ???
 Introduction of Li-Fi
 History of Li-Fi
 How Li-Fi Works ??
 VLC Smart Phone Model
 Li-Fi v/s Wi-Fi
 Application of Li-Fi
 Advantages of Li-Fi
 Limitation of Li-Fi
 REFERENCES
 Conclusion
2
“Introduction
To Li-Fi”
3
“Introduction to Li-Fi”
 Li-Fi basically known as “Light Fidelity” is an outcome of
21st century.
 The basic ideology behind this technology is that the data
can be transmitted through the LED light whose intensity
varies even faster than the Human-eyes.
 In modern times, it is called as the optimized version of
WI-FI .The advantageous thing is the wireless
communication which decreases the cost enormously.
4
“Introduction(Cont….)
 there are more and more devices coming up day-by-
day the signals of Wi-Fi are being clogged up due to
heavy traffic, there arised a need for an error free
transmission technology. And the solution to this
problem was the Li-Fi technology.
 With LIFI is possible to encode the data into the light
by varying the rate at which the LED’s flicker ON and
OFF which is too quickly to be noticed by the human
eye.
5
6
History of Li-Fi
 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 man of Mobile
Communications at the University of
Edinburgh and co-founder of pure LiFi.
 The consortium believes it is possible to
achieve more than 10Gbps speed using this
optical wireless technology also known as
Li-Fi.
 It gets affected if line of sight is not used, the
speed of data transmission will reduce or
data transmission will stop.
7
History(cont…)
 PureLiFi, formerly pureVLC, is an original
equipment manufacturer (OEM) firm set up to
commercialize Li-Fi products for integration with
existing LED-lighting systems.
 Philips lighting company has
developed a VLC system for shoppers
at stores. They have to download an app on
their Smartphone and then their Smartphone
works with the LEDs in the store. The LEDs can
pinpoint where they are at in the store and give
them corresponding coupons and information
based on where aisle they are on and what they
are looking at.
8
Why Li-Fi ??
9
=>Present Scenario
More than 1.8 Million more than 5 Billion
Radio Spectrum is congested but the demand for wireless data double each
year .Every thing, it seems want to use wireless data but the capacity is
drying up.
10
Different Electromagnetic Spectrums
and their potentiality
11
WHY ONLY VLC
Radio
Waves
Infrared
Rays
Visible
Rays
Ultraviolet
Rays
X- Rays
Gama
Rays
• Gama rays cant be used as they could be dangerous.
• X-rays have similar health issues.
• Ultraviolet light is good for place without people, but other wise
dangerous for the human body.
• Infrared, due to eye safety regulation, can only be used with low
power.
HENCE WE LEFT WITH THE ONLY THE VISIBLE – LIGHT SPECTRUM.
12
How Li-Fi
Works ???
13
Working of Li-Fi
 This fantabulous idea first striked the mind of Haraald Haas from
University of Edinburgh, UK, in his TED Global talk on VLC.His idea was
very simple that if the LED is “on” then the digital 1 can be transmitted
and if the led is “off” then the digital 0 can be transmitted.Led‟s can be
switched on and off very quick.
 For transmitting data this way all that we require is LED‟s and controller
that code data into LED‟s.Parallel data transmission can be done by
using array of LED‟s or by using red, green, blue LED‟s to alter light
frequency with the frequency of different data channel.
 Advancements and enhancements in this field generate a speed of 10
gbps! But amazingly fast data rates and lowering band widths are not the
only reasons that enhance this technology.
14
Working(Cont…)
 Lifi usually is based on light and so it can be probably
implemented in articrafts and hospitals that are prone to
inference from radio waves. Unlike Wi-Fi Li-Fi can work even
under-water which makes it more advantageous for military
operations.
 Radio waves are replaced by light waves in data transmission
called Li- Fi.
 The data transmission is done through binary codes which
involve switching on LED can be done by logic 1 and switch off
using logic 0.
15
Architecture of Li-Fi 16
Li-Fi Environment 17
VLC SMARTPHONES
 THE FIRST VLC SMARTPHONE WAS
PRESENTED BY CONSUMER ELECTRONICS IN
JANUARY, 2014
 THE PHONE USES WYSIPS CONNECT – A
CLEAR THIN LAYER OF CRYSTAL GLASS IS
ADDED TO THE SMALL SCREENS
 SMARTPHONE MAKES THEM SOLAR
POWERED.
SMARTPHONE COULD GET 15% MORE
BATTERY LIFE IN A DAY
CAN COMMUNICATE USING LI-FI.
18
19
20
21
22
Application of
Li-Fi
23
In Education Systems:
 Li-Fi is the latest technology that can provide fastest speed
internet access.
24
In Medical Application
 Operation theatres (OTs) do not allow Wi-
Fi due to radiation concerns. Usage of Wi-
Fi at hospitals interferes with the mobile
and pc which blocks the signals for
monitoring equipments. So, it may be
hazardous to the patient's health.
 To overcome this and to make OT tech
savvy Li-Fi can be used to accessing
internet and to control medical
equipments. This can even be beneficial
for robotic surgeries and other automated
procedures.
25
Cheaper Internet in Aircraft
 The passengers travelling in aircrafts get access to low
speed internet at a very high rate. Also Wi-Fi is not
used because it may interfere with the navigational
systems of the pilots.
 In aircrafts Li-Fi can be used for data transmission. Li-
Fi can easily provide high speed internet via every light
source such as overhead reading bulb, etc. present
inside the airplane.
26
Cheaper Internet in Aircraft 27
INDUSTRIES
USED IN RF RESTRICTED ENVIRONMENTS LIKE
CHEMICAL INDUSTRIES,
NUCLEAR POWER PLANTS, PETROL PUMPS
28
TRAFFIC SCENARIO
IN TRAFFIC SCENARIO, LIFI CAN BE
USED TO COMMUNICATE WITH THE LED
LIGHTS OF CARS .
 CARS CAN HAVE LED-BASED
HEADLIGHTS, BACKLIGHTS AND CAN
COMMUNICATE WITH EACH OTHER.
 THIS MIGHT PREVENT ACCIDENTS, BY
EXCHANGING INFORMATION, WHEN THE
VEHICLES ARE TOO CLOSE
 USING LIFI, STREET LIGHTS CAN BE
USED TO SEND INFORMATION ABOUT THE
ROAD CONDITION TO THE CAR.
29
Replacement of other technologies
 Li-Fi doesn't work using radio waves. So, it can be easily
used in the places where Bluetooth, infrared, Wi-Fi, etc. are
banned.
30
Advantages of Li-Fi
 High Security
 Easy To Use
 Fast Data Transfer
 Reliable
 Harmless ness
 Low Cost
31
Some Disadvantages of Li-Fi
 Light can’t pass through objects.
 Connectivity while moving.
 Interferences from external light sources like sun light,
normal bulbs, and opaque materials in the path of
transmission will cause interruption in the
communication.
32
Conclusion
 The possibilities are numerous and can be explored further.
If This technology can be put into practical use, every bulb
can be used something like a Wi-Fi hotspot to transmit
wireless data and we will proceed toward the cleaner,
greener, safer and brighter future.
33
REFRENCES
 Our Respected teacher’s
 Google
 Wikipedia
 Lificonsortium.org
 Purevlc.com
 ebookbrowse.com/an002-instrumentlighting-pdf-
d20428293
34
“END OF PRESENTATION”
35

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BILAL RAJAR PRESENTATION

  • 1.  MUNEEB SOHAIL (091)  BILAL RAJAR (074)  TALHA AHMED(065) 21 DECEMBER 2015 “USMAN INSTITUTE OF TECHNOLOGY” Affiliated with NED UNIVERSITY ENGINEERING & TECHNOLOGY 1
  • 2. Content:-  Why Li-Fi ???  Introduction of Li-Fi  History of Li-Fi  How Li-Fi Works ??  VLC Smart Phone Model  Li-Fi v/s Wi-Fi  Application of Li-Fi  Advantages of Li-Fi  Limitation of Li-Fi  REFERENCES  Conclusion 2
  • 4. “Introduction to Li-Fi”  Li-Fi basically known as “Light Fidelity” is an outcome of 21st century.  The basic ideology behind this technology is that the data can be transmitted through the LED light whose intensity varies even faster than the Human-eyes.  In modern times, it is called as the optimized version of WI-FI .The advantageous thing is the wireless communication which decreases the cost enormously. 4
  • 5. “Introduction(Cont….)  there are more and more devices coming up day-by- day the signals of Wi-Fi are being clogged up due to heavy traffic, there arised a need for an error free transmission technology. And the solution to this problem was the Li-Fi technology.  With LIFI is possible to encode the data into the light by varying the rate at which the LED’s flicker ON and OFF which is too quickly to be noticed by the human eye. 5
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  • 7. History of Li-Fi  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 man of Mobile Communications at the University of Edinburgh and co-founder of pure LiFi.  The consortium believes it is possible to achieve more than 10Gbps speed using this optical wireless technology also known as Li-Fi.  It gets affected if line of sight is not used, the speed of data transmission will reduce or data transmission will stop. 7
  • 8. History(cont…)  PureLiFi, formerly pureVLC, is an original equipment manufacturer (OEM) firm set up to commercialize Li-Fi products for integration with existing LED-lighting systems.  Philips lighting company has developed a VLC system for shoppers at stores. They have to download an app on their Smartphone and then their Smartphone works with the LEDs in the store. The LEDs can pinpoint where they are at in the store and give them corresponding coupons and information based on where aisle they are on and what they are looking at. 8
  • 10. =>Present Scenario More than 1.8 Million more than 5 Billion Radio Spectrum is congested but the demand for wireless data double each year .Every thing, it seems want to use wireless data but the capacity is drying up. 10
  • 12. WHY ONLY VLC Radio Waves Infrared Rays Visible Rays Ultraviolet Rays X- Rays Gama Rays • Gama rays cant be used as they could be dangerous. • X-rays have similar health issues. • Ultraviolet light is good for place without people, but other wise dangerous for the human body. • Infrared, due to eye safety regulation, can only be used with low power. HENCE WE LEFT WITH THE ONLY THE VISIBLE – LIGHT SPECTRUM. 12
  • 14. Working of Li-Fi  This fantabulous idea first striked the mind of Haraald Haas from University of Edinburgh, UK, in his TED Global talk on VLC.His idea was very simple that if the LED is “on” then the digital 1 can be transmitted and if the led is “off” then the digital 0 can be transmitted.Led‟s can be switched on and off very quick.  For transmitting data this way all that we require is LED‟s and controller that code data into LED‟s.Parallel data transmission can be done by using array of LED‟s or by using red, green, blue LED‟s to alter light frequency with the frequency of different data channel.  Advancements and enhancements in this field generate a speed of 10 gbps! But amazingly fast data rates and lowering band widths are not the only reasons that enhance this technology. 14
  • 15. Working(Cont…)  Lifi usually is based on light and so it can be probably implemented in articrafts and hospitals that are prone to inference from radio waves. Unlike Wi-Fi Li-Fi can work even under-water which makes it more advantageous for military operations.  Radio waves are replaced by light waves in data transmission called Li- Fi.  The data transmission is done through binary codes which involve switching on LED can be done by logic 1 and switch off using logic 0. 15
  • 18. VLC SMARTPHONES  THE FIRST VLC SMARTPHONE WAS PRESENTED BY CONSUMER ELECTRONICS IN JANUARY, 2014  THE PHONE USES WYSIPS CONNECT – A CLEAR THIN LAYER OF CRYSTAL GLASS IS ADDED TO THE SMALL SCREENS  SMARTPHONE MAKES THEM SOLAR POWERED. SMARTPHONE COULD GET 15% MORE BATTERY LIFE IN A DAY CAN COMMUNICATE USING LI-FI. 18
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  • 24. In Education Systems:  Li-Fi is the latest technology that can provide fastest speed internet access. 24
  • 25. In Medical Application  Operation theatres (OTs) do not allow Wi- Fi due to radiation concerns. Usage of Wi- Fi at hospitals interferes with the mobile and pc which blocks the signals for monitoring equipments. So, it may be hazardous to the patient's health.  To overcome this and to make OT tech savvy Li-Fi can be used to accessing internet and to control medical equipments. This can even be beneficial for robotic surgeries and other automated procedures. 25
  • 26. Cheaper Internet in Aircraft  The passengers travelling in aircrafts get access to low speed internet at a very high rate. Also Wi-Fi is not used because it may interfere with the navigational systems of the pilots.  In aircrafts Li-Fi can be used for data transmission. Li- Fi can easily provide high speed internet via every light source such as overhead reading bulb, etc. present inside the airplane. 26
  • 27. Cheaper Internet in Aircraft 27
  • 28. INDUSTRIES USED IN RF RESTRICTED ENVIRONMENTS LIKE CHEMICAL INDUSTRIES, NUCLEAR POWER PLANTS, PETROL PUMPS 28
  • 29. TRAFFIC SCENARIO IN TRAFFIC SCENARIO, LIFI CAN BE USED TO COMMUNICATE WITH THE LED LIGHTS OF CARS .  CARS CAN HAVE LED-BASED HEADLIGHTS, BACKLIGHTS AND CAN COMMUNICATE WITH EACH OTHER.  THIS MIGHT PREVENT ACCIDENTS, BY EXCHANGING INFORMATION, WHEN THE VEHICLES ARE TOO CLOSE  USING LIFI, STREET LIGHTS CAN BE USED TO SEND INFORMATION ABOUT THE ROAD CONDITION TO THE CAR. 29
  • 30. Replacement of other technologies  Li-Fi doesn't work using radio waves. So, it can be easily used in the places where Bluetooth, infrared, Wi-Fi, etc. are banned. 30
  • 31. Advantages of Li-Fi  High Security  Easy To Use  Fast Data Transfer  Reliable  Harmless ness  Low Cost 31
  • 32. Some Disadvantages of Li-Fi  Light can’t pass through objects.  Connectivity while moving.  Interferences from external light sources like sun light, normal bulbs, and opaque materials in the path of transmission will cause interruption in the communication. 32
  • 33. Conclusion  The possibilities are numerous and can be explored further. If This technology can be put into practical use, every bulb can be used something like a Wi-Fi hotspot to transmit wireless data and we will proceed toward the cleaner, greener, safer and brighter future. 33
  • 34. REFRENCES  Our Respected teacher’s  Google  Wikipedia  Lificonsortium.org  Purevlc.com  ebookbrowse.com/an002-instrumentlighting-pdf- d20428293 34