What is the difference between lifi and gifi
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Joined: Oct 2014
we live in the era of modernization. In this 21th century
the modern civilization is hugely depended upon
electronics and communication. Human are seeking of
social relationship and interaction with familiars. But
instead of face to face communication, now we are
interested with mobility. The word mobility completely
gave a goodbye call to wire line system wireless
communication is the example of mobility which
transfers the information without using any current
carrying conductor. But we did not own, new
technology should be always be preferable to us. In the
era of 1990‘s we only used the mobility offer the
communication system. But here now we are ready to
use the technology beyond the imagination. The
wireless fidelity WI-FI is the symptom on the first of
wireless technology. The world with interoperability for
microwave access (WI max) follow the line. The Wimax
is 100 times faster than Wi-Fi which is generally
used in business purpose. Whether the Wi-max worked
in microwave interoperability in ―Post Wi-Fi‖
technology, the light fidelity (Li-Fi) can be
complemented of RF communication and subset of
visible light communication LIFI is 1000 times faster
than Wi-Fi and much efficient than WIMAX.
According to data rates, nowadays we already allowed
Gigabyte Fidelity (Gi-Fi). But in the developing
countries the structure of technologies do not allow the
consumer to use Li-Fi and Gi-Fi in the daily life just
because these two technologies are operated in 10m
light communicating ranges. So when we are here
present to find out the best technology, we should take
care some parameter like efficiency, easy technology,
low cost and easy to operate. In this paper we will
discuss about above four mentioned technologies and
will find out the best among them, which will be the
future choice in communication industry.
Feature LiFi WiFi
Full form Light Fidelity Wireless Fidelity
Operation LiFi transmits data using light with the help of LED bulbs. WiFi transmits data using radio waves with the help of WiFi router.
Interference Do not have any intereference issues similar to radio frequency waves. Will have intereference issues from nearby access points(routers)
Technology Present IrDA compliant devices WLAN 802.11a/b/g/n/ac/ad standard compliant devices
Applications Used in airlines, undersea explorations, operation theaters in the hospitals, office and home premises for data transfer and internet browsing Used for internet browsing with the help of wifi kiosks or wifi hotspots
Merits(advantages) Interference is less, can pass through salty sea water, works in densy region Interference is more, can not pass through sea water, works in less densy region
Privacy In LiFi, light is blocked by the walls and hence will provide more secure data transfer In WiFi, RF signal can not be blocked by the walls and hence need to employ techniques to achieve secure data transfer.
Data transfer speed About 1 Gbps WLAN-11n offers 150Mbps, About 1-2 Gbps can be achieved using WiGig/Giga-IR
Frequency of operation 10 thousand times frequency spectrum of the radio 2.4GHz, 4.9GHz and 5GHz
Data density Works in high dense environment Works in less dense environment due to interference related issues
Coverage distance About 10 meters About 32 meters (WLAN 802.11b/11g), vary based on transmit power and antenna type
System components Lamp driver, LED bulb(lamp) and photo detector will make up complete LiFi system. requires routers to be installed, subscriber devices(laptops,PDAs,desktops) are referred as stations