Light fidelity
AZEEM K
S3 EC
ROLL NO:25
1.4 Million
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.
• So what can carry this excess demand in the
future.
• Drawbacks - Capacity, Availability, Security &
Efficiency.
•
LI-FI is transmission of data through illumination,
sending data through a LED light bulb that varies in
intensity faster than human eye can follow
HARALD HASS
•On one end all the data on the internet
will be streamed to a lamp driver when the
led is turned on the microchip converts
the digital data in form of light
• A light sensitive device (photo detector)
receives the signal and converts it back
into original data. This method of using
rapid pulses of light to transmit
information wirelessly is technically
referred as Visible Light Communication
Radio
Waves

Infrared
Rays
Visible
Rays
Ultraviolet
Rays
X- Rays
Gama
Rays
.
.
REFRENCES
1..http://www.electronicsforu.com/electronicsforu/ci
rcuitarchives/view_article.asp?sno=778&title%20=
%20LiFi%3A+A+New+Paradigm+in+Wireless+Communi
cation&b_type=new&id=12042
2. http://en.wikipedia.org/wiki/Li-Fi
3. International Journal of advances in computing
& communications, vol 1, 2013,page no-12
www.ijacc.org