DevoxxFR 2024 Reproducible Builds with Apache Maven
Li-Fi
1. Li-Fi is the transmission of data through
illumination by taking the fiber out of fiber
optics by sending data through a LED light bulb.
This varies in intensity faster than Human Eye
can follow.
It is the fast and cheap wireless
communication system which is optical version
of the Wi-Fi.
2. Its Working is much simply explained as
follows:
If the LED is on, the digital 1 is transmitted.
And if it is off, the digital 0 is transmitted.
It is possible to encode data in the light by
varying the rate at which the LEDs flicker on
and off to give different strings of 1s and0s.
5. The PCB controls the electric inputs and
outputs of the lamp and houses the
microcontroller used to manage different lamp
functions.
An RF (radio-frequency) signal is generated by
the solid-state PA and is guided into an electric
field about the bulb.
6. The high concentration of energy in the electric
field vaporizes the contents of the bulb to a
plasma state at the bulb’s center; this
controlled plasma generates an intense source
of light.
All of these sub-assemblies are contained in
an aluminium enclosure.
7.
8. Li-Fi is a term of one used to describe visible
light communication technology applied to high
speed wireless communication.
It acquires this name due to the similarity to Wi-
Fi, only using light instead of radio.
9. Wi-Fi is great for general wireless
coverage within buildings, and Li-Fi is
ideal for high density wireless data
coverage in confined area and for
relieving radio interference issues, so the
two technologies can be considered
complimentary.
10. Technology Speed Data density
Wierless (current)
Wi-F-IEEE 150Mbps *
802.11n
Bluetooth 3Mbps *
IrDA 4Mbps ***
11. Technology Speed Data density
Wireless (future)
Wi-Gig 2Gbps **
Giga-IR 1Gbps ***
Li-Fi 1Gbps ****
12. Li-Fi technology is based on LEDs for the
transfer of data.
The transfer of the data can be with the help of
all kind of light i.e Light may be Invisible,
Ultraviolet or Visible part of spectrum.
The speed of the internet is incredibly high and
the user everything in just a few minutes.
13.
14. Some of the applications of Li-Fi are given
below:
Medical field
Airlines
Power plant
Military operations
Under sea water
15. Used for modern medical instruments.
Used in petroleum or chemical plants where
other transmission or frequencies could be
hazardous.
Thousands and millons of street lamps can be
transferred to Li-Fi lamps to transfer data.
16. It is possible to achieve more than 10Gbps,
theoretically allowing a high-definition film to be
downloaded in 30sec.
Mostly powered by LEDs so it is cost efficient.
Transmission of data is fast and easy.
17. The concept of Li-Fi is currently attracting
a great deal of interest, not least because
it may offer a genuine and efficient
alternative to radio-based wireless.
As a growing number of people and their
devices access wireless internet, the air
waves are becoming increasingly clogged,
making it more and more difficult to get a
reliable, high-speed signal.