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 dense region
|
Interference is more, can not pass through sea water, works in less dense region
|
Privacy
|
In LiFi, light does not pass thorugh the walls and hence will provide a much secure data transfer
|
In WiFi, RF signal passess thorugh the walls and hence there is a 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
|
