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A
SEMINAR REPORT
ON
LI-FI TECHNOLOGY
In partial fulfillment of requirements for the seminar of
Bachelor of Technology
In
Information Technology
Submitted By
SURAJ KUMAR YADAVA
Under the Guidance of
SHOBHIT KUMAR
DEPARTMENT OF INFORMATION TECHNOLOGY
Manywar Kanshiram Engineering College of Information Technology
Ambedkar Nagar
[2013-2014]

CERTIFICATE
This is to certify that seminar work entitled “LI-FI TECHNOLOGY” is a bonafide work
carried out in the sixth semester by “SURAJ KUMAR YADAVA” in partial fulfillment for
the award of Bachelor of Technology in Information Technology from Manywar
Kanshiram Engineering College of Information Technology during the academic year
2013-2014. Who carried out the seminar work under the guidance and no part of this work
has been submitted earlier for the award of any degree.
AAKANSHIT VERMA SHOBHIT KUMAR
(SEMINAR CO-ORDINATOR) (GUIDE)

ACKNOWLEDGEMENT
I would like to express my deep and sincere gratitude to my seminar supervisor Mr.
AAKANSHIT VERMA and Mr. SHOBHIT KUMAR Assistant Professor, Department of
Information Technology for his dedicated and sincere efforts and guidance towards the
completion of this important work providing all the possible and proper guidance.
I would like to thanks Mr. SHOBHIT KUMAR, Head of Department of Information
Technology, for his helpful attitude, cooperation and encouragement without whom this work
would not have materialized.
I feel pleasure to express thanks to all faculty members of the Information Technology
Department for their valuable encouragement and timely suggestions. I also thank to the all
staff members of the Information Technology Department for their helps rendered.
.
SURAJ KUMAR YADAVA
(1173713051)
(Contact-9792925175)

ABSTRACT
Li-Fi is a VLC, visible light communication, technology developed by a team of scientists
including Dr. Gordon Povey, Prof. Harald Haas and Dr. Mostafa Afgani at the University of
Edinburgh. The term Li-Fi was coined by Prof. Haas when he amazed people by streaming
high-definition video from a standard LED lamp, at TED Global in July 2011. Li-Fi is now
part of the Visible Light Communications (VLC) PAN IEEE 802.15.7 standard. “Li-Fi is
typically implemented using white LED light bulbs. These devices are normally used for
illumination by applying a constant current through the LED. However, by fast and subtle
variations of the current, the optical output can be made to vary at extremely high speeds.
Unseen by the human eye, this variation is used to carry high-speed data,” says Dr. Povey,
Product Manager of the University of Edinburgh's Li-Fi Program ‘D-Light Project’. [10][11]

CONTENTS
1. INTRODUTION…….………………………….……………………………………..1
2. GENESIS OF LI-FI……………………………….……………….………………......2
3. WORKING OF LI-FI……..………………………….….……………………….……3
4. WORKING OF LI-FI LIGHT SOURCES……………………….................................6
5. APPLICATION OF LI-FI TECHNOLOGY…...………………………......................8
6. CONCLUSION…………………………………………………….……….……......10
7. REFERENCES…………………………………………………...…………...……...11

LIST OF FIGURES
1. Hass Harald ……………………………………………………………...……….....2
2. LED Bulbs…………………………………………………………………...………3
3. Li-Fi Demonstration……………………………………………………………...….4
4. LI-FI Use………………………………………………………………………...…..5
5. Data Transfer Using Light……………………………………………………...…....7
6. Application of LI-FI…………………………………………....................................8

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