Li-Fi is a visible light communication system that provides wireless data using LED light bulbs. It offers several advantages over traditional Wi-Fi including larger bandwidth, higher efficiency, more availability, higher security, and being non-hazardous. Li-Fi works by modulating the intensity of LED light bulbs to transmit data and can achieve transmission speeds 10,000 times faster than traditional radio frequency Wi-Fi. It has applications in environments where RF connectivity is restricted as well as in underwater communications, aviation, hospitals, mobile connectivity, and smart lighting.

1. LOGO
“ Add your company slogan ”
Light Fidelity (Li-Fi)
The bright future of 5G visible light communication systems
SHAVEL

2. WIRELESS DATA IS
GROWING
EXPONENTIALLY……
 YouTube
 In 2015 ~ average 192 views for every person on
Earth. (Over 1 Trillion views)
 More videos is uploaded to YouTube in one month
than the 3 major US networks created in 60 years.
 72 hours of video are uploaded to YouTube every
minute.
 25% of global YouTube views come from mobile
devices.
SOURCE: https://www.youtube.com/user/Usersurvey
Internet video traffic is growing at 48% CAGR
SOURCE:http://www.cisco.com/c/en/us/solutions/collateral/service-provider/ip-ngn-ip-next-generation-network/white_paper_c11-481360.html

3. …LEADING TOP RF
SPECTRUM SHORTAGE
SOURCE: http://www.cisco.com/assets/sol/sp/vni/forecast_highlights_mobile

4. VISIBLE LIGHT FOR
COMMUNICATION

5. Li-Fi : New Epoch of
Wireless Communication
 What is Li-Fi ?? (LIGHT FIDELITY)
 Coined by Prof. Harald Haas during his TED Global talk.
 Li-Fi can be thought of as a light-based Wi-Fi.
 Technology uses The Visible Spectrum.
 Subset of optical wireless communications (OWC)
SOURCE: https://en.wikipedia.org/wiki/Li-Fi

6. Li-Fi ENVIRONMENT

7. BASIC PRINCIPLE
 Normal light power is replaced by LED light power
 The LED bulb will hold a micro-chip that will do the job of
processing the data.
 The light intensity can be manipulated to send data by tiny
changes in amplitude
 Properties of LED: (Fundamental property of LI-FI)
1.Intensity can be modulated into very high speeds
& varying amplitudes.
2.LED can be switched on and off with very high
speed.

8. ADVANTAGES
• Larger bandwidth (10,000 times the radio bandwidth)
• High efficiency
• More availability
• Highly secure
• Non-hazardous.

9. APPLICATIONS
 In RF restricted Environments.
 Underwater Communications.
 Aviation.
 Hospital & Healthcare.
 Mobile Connectivity.
 Smart Lighting.
 In vehicles and traffic lights, reducing accidents and
traffic congestion

10. THANK YOU