Li-Fi
Technology
Introduction:
Day by day
activities is to send data one
destination to other destination.
Li-Fi technology has another benefits over Wi-Fi, for example safer for
nuclear energy-producing station, thermal energy-producing
station in that places Wi-Fi are not used.1.Some energy-producing station in which RF
wave,s is injurious and it may reason of disaster.The
way of communication in such stations only visible light spectrum can be
used.There are four working methods of
Li-Fi and Wi-Fi are, Efficieny,availability,capcity and security Wifi and Lifi technology both uses the electromagnetic
spectrum for communication ,but WI-FI uses radio wave,s spectrum.2.(The
present wireless networks that linked us internet. Working is slow when linked
to several devices. As the number of devices increases and also internet speed
increases, that the bandwidth available
makes it more and more difficult to enjoy high data transfer rates
for a secure network. As a radio waves
are just a small part of spectrum.)Solution of this problem is by working on
Lifi technology.Li-Fi is a data transmission through by taking the fiber out of fiber optics by
sending data through an LED light bulb 3 that make the faster speed as
compare to human eye can follow.
Li-Fi is the term of fast and cheap wireless communication
system, which is advanced version of
Wi-Fi. Li-Fi using visible light inspect
of Gigahertz radio waves for data transfer. Fig. 1. Li-Fi bulb 3. This
idea of Li-Fi was proposed by a German physicist, Harald Hass, which he
concluded to as ?data through illumination. This technology Li-Fi was first
used by Haas in his TED Global talk on Visible Light Communication. According
to Hass, the light, which he concluded that the D-Light, can be used to produce
data rates higher than 10 megabits per second which is more as more faster than our average broadband connection
4. Li-Fi can relieving the heavy loads which the current wireless systems face.
LIFI offers much larger frequency band (300 THz) compared to that available in
RF communications (300GHz). As more data coming through the visible light
spectrum could concerns that the electromagnetic waves affect our health. Li-Fi
can be new technology as for future where data for laptop,mobiles and tablets will be transmit through the
light in a room. Security cannot be
the issue because if you cannot see the
light, you cannot access the data. As a
result, it can be used in high security military areas.
