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.
|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: