WiFi vs LiFi
WiFi vs LiFi

WiFi vs LiFi

WiFi vs LiFi: WiFi a facility allowing computers, smartphones, or other devices to connect to the Internet or communicate with one another wirelessly within a particular area.

LiFi is high speed bi-directional networked and mobile communication of data using light.

WiFi vs LiFi




Full Form Wireless Fidelity Light Fidelity
Operation WiFi transmits data using radio waves with the help of WiFi router. LiFi transmits data using light with the help of LED bulbs.
Interference Will have interference issues from nearby access points (routers). Do not have any interference issues similar to radio frequency waves.
Technology WLAN 802.11a/b/g/n/ac/ad standard compliant devices Present IrDA compliant devices
Application Used for internet browsing with the help of Wi-Fi kiosks or Wi-Fi hotspots Used in airlines, undersea explorations, operation theaters in the hospitals, office and home premises for data transfer and internet browsing
Merits (Advantages) Interference is more, cannot pass through seawater, works in less denser region Interference is less, can pass through salty sea water, works in denser region
Privacy In WiFi, RF signal cannot be blocked by the walls and hence need to employ techniques to achieve secure data transfer In LiFi, light is blocked by the walls and hence will provide more secure data transfer
Data Transfer Speed WLAN-11n offers 150Mbps, about 1-2 Gbps can be achieved using WiGig/Giga-IR About 1 Gbps
Frequency of Operation 2.4GHz, 4.9GHz and 5GHz 10  thousand times frequency spectrum of the radio
Data Density Works in less dense environment due to interference related issues Works in high dense environment
Coverage Distance About 32 meters (WLAN 802.11b/11g), vary based on transmit power and antenna type About 10 meters
System Components Requires routers to be installed, subscriber devices (laptops, PDAs, desktops) are referred as stations Lamp driver, LED bulb (lamp) and photodetector will make up complete LiFi systems


WiFi and LiFi Architecture:

LiFi: Architecture

LiFi - architecture

WiFi Architecture

WiFI : Architecture




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