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LiFi vs WiFi-Basic difference between LiFi and WiFi

This page on LiFi vs WiFi describes 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.

Li-Fi internet architecture

Refer LiFi tutorial➤ for more information.



LiFi and WiFi Related Links

LiFi internet vs WiFi internet
Data Over Light basics mentioning how Li-Fi works
WiFi Internet using WiFi hotspots
MiFi vs WiFi
WiFi RF Channels
LiFi tutorial

what is difference between

difference between FDM and OFDM
Difference between SC-FDMA and OFDM
Difference between SISO and MIMO
Difference between TDD and FDD
Difference between 802.11 standards viz.11-a,11-b,11-g and 11-n
OFDM vs OFDMA
CDMA vs GSM
Bluetooth vs zigbee
Fixed wimax vs mobile

RF and Wireless Terminologies


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