Seminar on Lifi

8/18/2019 Seminar on Lifi

1/19

A

Presentation on

LI-FI TECHNOLOGY

Prafull Mittal

Presented By:-


2/19

Introduction

What is Li-Fi ?

Light-Fidelity

LI-FI is transmission of data through illumination, sending

data through a LED light bulb that aries intensity faster

than human eye !an follo"#


3/19


4/19

Li-Fi


5/19

Present Scenario

$adio %&e!trum is !ongested but the demand for "ireless data

double ea!h year# Eerything, it seems "ant to use "irelessdata but the !a&a!ity is drying u

'#( )illion Base %tations * Billion


6/19

Radio Spectrum Issues

Capacity

Less Band"idth !om&ared to other s&e!trums

Insuffi!ient s&e!trum for in!reasing data.

Aailable "ithin the range of Base stationsLimited aailability

+naailable in air!rafts

Less se!ure&asses through the "alls

Availability

Security


7/19

Why VLC ?

.ama rays !an/t be used as they !ould be dangerous#

0-rays hae similar health issues#

+ltraiolet light is good for &la!e "ithout &eo&le, but other

"ise dangerous for the human body#

Infrared, due to eye safety regulation, !an only be used "ith

lo" &o"er#

HENCE WE LEFT WITH ONLY THE ISI!LE - LIGHTSPECT"#M$

Why only 1L2 ?


8/19

WHO CAN "EPLACE

"A%IO WAES FO"WI"ELESS

COMM#NICATION &


9/19

Li-Fi

Li'(t - Fi)elity


10/19

Working Process

3&erational &ro!edure is ery sim&le, if the led is on, you transmit a

digital ', if its off you transmit a 4# 5he LEDs !an be s"it!hed on

and off ery 6ui!7ly, "hi!h gies ni!e o&&ortunities for transmitting

data# 8en!e all that us re6uired is some LEDs and a !ontroller that

!ode data into those LEDs# We hae to 9ust ary the rate# 5hus eery light sour!e "ill "or7s as a hub

for data transmission #


11/19

How Li-Fi Works ?


12/19

Li-Fi s Wi-Fi


13/19

!pp"ication !reas

Li-Fi te!hnology is still in its infan!y #8o"eer some areas

"here it seems &erfe!tly a&&li!able are:-

POTENTIAL APPLICATION OF LI-FI

* $ Traffic Li'(t+ ,

5raffi! lights !an !ommuni!ateto the !ar and "ith ea!h other#

2ars hae LED-based

headlights, LED-based !a!7

lights, and !ars !an!ommuni!ate "ith ea!h other

and &reent a!!idents in by

e!hanging information#


14/19

Potentia" !pp"ication o# Li-Fi

$ I.tri.+ically Safe E.vir/.0e.t ,

1isible Light is more safe than $F, hen!e it !an be used in &la!es "here $F !an;t be used su!h as &etro!hemi!al &lants #


15/19


1$ Airli.e+ ,

Wheneer "e trael through air"ays "e fa!e the &roblem

in !ommuni!ation media, be!ause the "hole air"ays

!ommuni!ation are &erformed on the basis of radio "aes# 5o

oer!ome this dra"ba!7 on radio "aes , li-fi is introdu!ed#

i i i # i i


16/19


2$ O. Ocea. !e)+ ,

Li-Fi !an een "or7 under"ater "here Wi-Fi fails

!om&letely, thereby thro"ing o&en endless o&&ortunities for

military


17/19

!pp"ication

• 5here are millions of street lam&s de&loyed around the "orld#

Street La0p+ 3A+ free Acce++ P/i.t+4 ,

• Ea!h of these street lam&s !ould be a free a!!ess &oint#

C " i


18/19

Conc"usion

5he &ossibilities are numerous and !an be e&lored further# If

this te!hnology !an be &ut into &ra!ti!al use , eery bulb !an

be used something li7e a Wi-Fi hots&ots to transmit "ireless

data#

Li Fi


19/19

Li-Fi

THAN5 YO#

ANY 6#E"IES7$$

Seminar on Lifi

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