LiFi vs WiFi

LiFi Vs WiFi Light Fidelity Vs Wireless Fidelity

Aditya Parmar

Electrical Engineer

Charotar University Of Science & Technology

adisoni624@gmail.com

Working Operation

• LiFi transmits data using light with the help of LED bulbs.• WiFi transmits data using radio waves with the help of

WiFi router.

Components Of the System

• Lifi Uses Lamp driver, LED bulb and photo detector• Wifi Uses Wifi router and subscribing stations.

Causes Of Interference

• Lifi System do not have any intereference issues similar to that of radio frequency waves.

• Wifi will have intereference issues from nearby access points routers.

Technology Used

• In Lifi IrDA compliant devices are used.• In Wifi WLAN 802.11a/b/g/n/ac/ad standard compliant

devices are used.

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

• Lifi can have data transfer speed up to 1 Gbps.• Where, In Wifi WLAN-11n offers 150Mbps of data transfer

speed.

Frequency of operation

• Life Uses 10 thousand times frequency spectrum of the radio.

• Wifi has 2.4GHz, 4.9GHz and 5GHz of frequency of operation.

Coverage distance

• The coverage of about 10 meters can be covered in Lifi system.

• Whereas in wifi system about 32 meters can be covered(WLAN 802.11b/11g) and it also vary based on transmit power and antenna type.

Density Of Data

• Lifi can work in high dense environment.• Wifi works in less dense environment due to interference

related issues.

Applications

• Lifi 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.

Thank you