LiFi vs WiFi

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.