LiFi vs WiFi
WiFi Vs LiFi |
This basic difference between LiFi and WiFi technologies.
Following table mentions feature comparison between both.
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
|
Lifi is not the replacement of wifi
technology. It can be considered as incredible companion of the wifi
technology. It operates between 380 nm to 780 nm optical range. LiFi is used to
exchange data incredibly rapidly and securely at much lower power level compare
to WiFi.