What is VLC Visible light & Spectrum VLC process -Transmitter -Receiver -Modulation VLC characteristics Comparison with RF & IR Demerits of VLC Applications

1. ALWIN POULOSE
Reg.No:1567001
3MTCN
CHRIST UNIVERSITY
28/06/2016
MENTOR:ABHIJITH B N

2. CONTENTS
• Abstract
• What is VLC
• Visible light & Spectrum
• History
• VLC process
-Transmitter
-Receiver
-Modulation
• VLC characteristics
• Comparison with RF & IR
• Demerits of VLC
• Applications
• Project Proposal
• Conclusion
• Reference

3. ABSTRACT
Visible light communication (VLC) is one of
the key area in wireless communications.
Which work similarly to fiber optic links,
except the beam is transmitted through
free space. While the transmitter and
receiver must require line-of-sight
conditions, they have the benefit of
eliminating the need for broadcast rights
and buried cables.
VLC communications systems can be
easily deployed since they are
inexpensive, small, low power and do not
require any radio interference studies.

4. VLC communication system can be used to
transmit sound and data signals through
the light beam of the system.
The intensity of the carrier beam changes
with the change in amplitude of the sound
signal. Variation in the intensity of the
light beam is converted into a variation in
the voltage level by using photo transistor.
In this mode of communication the
transmitter and receiver requires
satisfying the line of sight conditions.

5. • Traditional VLC system provides
data communication but it is not
secure. If any one has the VLC
receiver the data can be
retrieved.
• To provide security I would like to add data encryption
using VLC and transmit the data secure way and
implement Vehicle to Vehicle communication.
• In this project, I try to implement the
concept of VLC by implementing a
VLC system which is used for secure
Vehicle to Vehicle communication.

20. Current Scenario

21. Project Proposal
• Visible light communication (VLC) is
regarded as relatively secure
communication when compared with
other wireless communications using
radio frequency (RF).
• However, due to the visual nature, the
VLC signals are still subject to
eavesdropping when they are emitted
by the light source.
• I propose a light encryption scheme
using devices having light-emitting
diode (LED) and a camera image sensor,
such as a mobile phone.
• The original visible signal sending from the lamp can be first received by the proposed light
encrypter.
• The information can be encrypted and then emitted
• The light encrypter acts as an encryption gateway for signals in optical domain.

23. REFERENCE
• Yuki Goto, Student Member, IEEE,Isamu Takai, Member, IEEE,Takaya Yamazato, Member,
IEEE,Hiraku Okada, Member, IEEE,Toshiaki Fujii, Member, IEEE,Shoji Kawahito, Fellow,
IEEE,Shintaro Arai, Member, IEEE,Tomohiro Yendo, Member, IEEE,Koji Kamakura, Member, IEEE
“A New Automotive VLC System Using Optical Communication Image Sensor” Volume 8,
Number 3, June 2016 IEEE Photonics Journal
• Yong Hyeon Kim,Willy Anugrah Cahyadi,Yeon Ho Chung, Member, IEEE “Experimental
Demonstration of VLC-Based Vehicle-to-Vehicle Communications Under Fog Conditions”
Volume 7, Number 6, December 2015 IEEE Photonics Journal
• Yang Liu,Kevin Liang,Hung-Yu Chen,Liang-Yu Wei,Chin-Wei Hsu,Chi-Wai Chow, Senior Member,
IEEE,Chien-Hung Yeh “Light Encryption Scheme Using Light-Emitting Diode and Camera Image
Sensor” Volume 8, Number 1, February 2016 IEEE Photonics Journal
• Isamu Takai, Member, IEEE ,Tomohisa Harada,Michinori Andoh,Keita Yasutomi, Member,
IEEE,Keiichiro Kagawa, Member, IEEE,Shoji Kawahito, Fellow, IEEE “Optical Vehicle-to-Vehicle
Communication System Using LED Transmitter and Camera Receiver” Volume 6, Number 5,
October 2014 IEEE Photonics Journal
• Rakesh Gupta, Amit Sharma “Vehicle-To-Vehicle Data Broadcasting Through Visible Light
Communication” IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)e-ISSN:
2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 2, Ver. VIII (Mar - Apr. 2014), PP 90-95
• A. Cailean, B. Cagneau, L. Chassagne, S. Topsu, Y. Alayli and J-M. Blosseville “Visible light
communications: application to cooperation between vehicles and road infrastructures” HAL
Id: hal-00870584,https://hal.archives-ouvertes.fr/hal-00870584 Submitted on 7 Oct 2013