The Future Of Wireless TechnologyLight Fidelity Shamil Ahammad K

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Introduction

Research Began in 1990s

Publicly introduced and demonstrated in July 2011 at Global TED Talk

5G Optical Communication

No optical fibre

Wireless Communication

Introduced Publicly In July 2011 Global TED Talk

Prof. Harald HaasProfessor, University of Edinburgh

Li-Fi is a Visible Light Communic-ation

Present Scenario of Radio-spectrum

CAPACITY

BANDWIDTHSHORTAGE AVAILABIL-

ITY EFFICIENCY

SECURITY

Capacity

❖ Wireless Transmission Is Through Radio-waves❖ Limited And Expensive

❖ Limitations Of Range❖ Less Data Density

Efficiency

❖ 1.8 Million Cellular Radio Stations❖ Consume Massive Energy

❖ Most Energy Used For Cooling Base Stations❖ Base Station Have Only 5% Efficiency

Availability

❖ Issues In Aerospace❖ Limited In Marine Applications

❖ Limitations In Petrochemical Plants❖ Environmental Problems of Radio-spectrum

Security

❖ Penetrate Through Walls❖ Hackers Easily Hacks

❖ Can Be Intercepted

Bandwidth Issues

1.8 Mil-lion+ 6 Billion+

Radio-spectrum is congested and the demand doubles every year, it shows that capacity is drying up

Why Visible Light Communication Gamma Rays are dangerous

X-Rays has health issues Ultraviolet can be used only were humans aren't

present Infrared has heat radiation issues and using high

power causes health problems

Light Fidelity (Li-Fi)

Future of wireless technologyWireless data transmission through illuminations

Visible Light for communicationIntensities modulates in a very higher rate

Very faster and GreenerChaos theory implemented Li-Fi are Extremely secure

Basic Concepts of Li-FiFaster switching On and Off of LEDs in less than 1 micro-

secondHuman Eyes can't detect those variations

This invisible On-Off activities enables binary transmis-sion

Switching On = Logical '1'Switching Off = Logical '0'

Li-Fi TransmitterFour Primary Assemblies

LED BulbRF Power Amplifier Circuit

Circuit BoardAluminium Enclosure

Ultra Parallel Data Streaming Is Used

Ultra Parallel Transmission

• Using Arrays of Ultra Parallel LEDs for data transmission• Mixing Red, Green, Blue Lights To Alter The Frequencies

• So Each frequency encode different data

Promise Speed of 10Gbps

Seamlessly Streams 3D-4K Videos

UK Research Report

O-OFDMOptical Orthogonal Frequency Division Multiplex-

ing

…………………………………………….100010101010101010101010101010101011010101010101010101010000101010101010101010100010100010101110001000101100011001010100100010101111101010100101010101010101010000001111101010101010101010101010101001000101010011

…………………………………………….

Multiple Data Stream-ing

Li-Fi ReceiverPhoto Detectors with Signal Amplifier and Processing Circuits

Li-Fi Implementation

Speed Comparison

Bluetooth Wi-Fi 802.11N

4G USB 3.0 Li-Fi0Gbps

2.5Gbps

5Gbps

7.5Gbps

10Gbps

12.5Gbps

Applications of Li-Fi

Li-Fi Smartphone

Prototype Demonstrated at Consumer Electronics Show, LA 2014

Tele-MedicineMedical Technology has lagged behind the rest of the wireless world

Interferences from cell phones block sig-nals to the monitoring equipment

Helps faster Telemedicine

AirlinesZero Percent Interference

Provides high-speed Internet

Smarter Power PlantsRadio communications are bad for sensitive areasAnd Power-plants require faster communicationLi-Fi is safer, abundant, less power consumption

Undersea Awesomeness

Keep You Informed and Save Lives

Communications in Rural Area

Green Information Technology

Communication Safety

Multi User Communication

Lighting Point Hotspots

Traffic Information Directly To The Vehicles

Uses in Various Areas

Recent Updates

Recent Updates

Leading Companies Behind Research

pureLiFi Products

Li-1st LiFi Transmitter Li-Flame Receiver Ceiling Unit

Li-Flame Receiver Desktop Unit

OLEDCOMM Products

Advantages

Speed Greater Than 10GbpsSeamlessly streams 3D-4KHD videoCan be used almost everywhere, where RF signals are re-

strictedEnergy EfficientCost efficientExcellent alternative to Radio WavesHigh AvailabilityHigh Data DensityMore Secure

Challenges facing

Cannot Penetrate Solid ObjectsDifficulties On Back Transmitting The Received LightInterference from external sourcesPresence of light for late night useLine of Sight Necessary in Most of the Cases

Conclusion

Numerous Possibilities And Can Be Explored Further Every bulb can be used to a WiFi hotspot Greener-Cleaner-Safer Communication Currently Attracting a Great Deal of Interest Solves the Issues of Radio Waves, A an Alternative More Reliable And High Speed Larger Bandwidth A Lot Of Applications

Reference[1] Prof. Harald Haas’s pureLiFi project website, www.purelifi.com[2] http://en.wikipedia.org/wiki/Li-Fi[3] http://teleinfobd.blogspot.in/2012/01/what-is-lifi.html[4] technopits.blogspot.comtechnology.cgap.org/2012/01/11/a-lifi-world/[5] www.lificonsortium.org/[6] the-gadgeteer.com/2011/08/29/li-fi-internet-at-thespeed-of-light/[7] en.wikipedia.org/wiki/Li-Fi[8] www.macmillandictionary.com/buzzword/entries/Li-Fi.html[9] dvice.com/archives/2012/08/lifi-ten-ways-i.php[10] Will Li-Fi be the new Wi-Fi?, Scientist Jamie Condliffe, 28 July 2011[11] ://www.digplanet.com/wiki/Li-Fi[12] ”Visible-light communication: Tripping the light fantastic: A fast and cheap optical version of Wi-Fi is coming”, Economist, dated 28Jan 2012

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