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Difference between LiFi and WiFi

  • Difficulty Level : Basic
  • Last Updated : 03 Jan, 2020

Wi-Fi(wireless fidelity) and Li-Fi(light fidelity) both are two different technologies which are used to send and receive data wirelessly. In case of Wi-Fi we use Routers and Radio Frequency (RF) waves to transmit data, whereas in Li-Fi we use LED bulbs and Light signals to transmit and receive data.

Basic Difference between LiFi and WiFi:

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ComparisonLi-FiWi-Fi
Full formstand for light fidelitystands for wireless fidelity
Invented/CoinedCoined by Prof. Harald Haas in 2011By NCR corporation on 1991
Operationit transmits data using light by the help of LED bulbsit transmits data using radio waves using wifi router
TechnologyPresent IrDA compliant devicesWLAN 802.11/b/g/n/ac/d standard compliant devices
Data Transfer SpeedAbout 1 GbpsRanges from 150Mbps to maximum of 2Gbps
Privacylight is blocked by the walls hence provide more secure data transferwalls cannot block radio waves so we need to employ more techniques to achieve secure data transfer
Frequency of operation10, 000 times frequency spectrum of the radio2.4Ghz, 4.9Ghz and 5Ghz
Coverage Distanceabout 10 metersabout 32 meters(vary based on transmit power and antenna type)
Data densitywork with high dense environmentwork in less dense environment due to interference related issues
Bare minimum Components usedLED bulb, LED driver and photo detectorRouters, Modems and access points
ApplicationsUsed in airlines, undersea exploration etcUsed for internet browsing with the help of wifi hotspot
My Personal Notes arrow_drop_up
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