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Li-fi vs. Wi-fi

There are two different technologies that are used to send and receive data wirelessly: Wi-Fi (wireless fidelity) and Li-Fi (light fidelity). While Li-Fi uses LED lights and light signals to transmit and receive data, Wi-Fi uses routers and radio frequency (RF) waves to do so.

The following are the key distinctions between LiFi and WiFi:

Comparison Li-fi Wi-fi
Full Form Its name means Light Fidelity. The term refers to Wireless Fidelity.
Invented/Coined created in 2011 by professor Harald Haas. 1991 by NCR Corporation.
Operation With the aid of LED bulbs, it transmits data using light. Using a wifi router, it transmits data using radio waves.
Technology current IrDA-compliant gadgets Devices that comply with WLAN 802.11/b/g/n/ac/d standards
Data Transfer Speed roughly 1 Gbps. 150 Mbps to a maximum of 2 GB per second
Standard IEEE 802.15.7 IEEE 802.11
Privacy Because the walls block light, data transfer is more secure. Radio waves cannot be stopped by walls, so we must use additional methods to transfer data securely.
Bandwidth Access to limitless bandwidth. A finite amount of bandwidth is available.
Frequency of operation 10,000 times the radio's frequency spectrum 2.4, 4.9, and 5 gigahertz
Coverage Distance roughly ten metres roughly 32 metres (vary based on transmit power and antenna type)
Power Consumption Low Power Consumption High Power Consumption
Data density Work within the highly populated area Due to problems with interference, work in a less crowded environment.
Cost Low High
Bare minimum Components used LED driver, LED bulb, and photo sensor access points, modems, and routers
  • Because of the use of VLC technology and highly effective LED bulbs, the price is low.
  • increased transmission speed due to the rapid movement of light.
  • less interference, the ability to cross salt water, and the capacity to function in densely populated areas.
  • prevents unauthorised access due to the opaque walls' ability to block out visible light.
  • WiFi did away with the need for direct physical connections to servers, allowing users to access local networks and the internet without them. The fact that WiFi connections are wireless means that users can access them from anywhere in the vicinity.
  • Simple to implement because all you need to do is contact an ISP to get an internet connection and a WiFi router to get an access point.
  • Since LiFi technology is still a new idea, there is essentially no infrastructure needed to implement it on a large enough scale.
  • The light source must always be on in order to enable network access.
  • It becomes incredibly susceptible to interference from outside sources because it transmits data using light.
  • Because of the limited signal range emitted by light bulbs when using LiFi devices, users are forced to remain stationary.
  • WiFi networks are well-known for being unsafe. Its broad signal range is primarily responsible for its lack of security.
  • There is more interference, it can't cross salt water, and it prefers less populated areas.
  • Signals are incredibly erratic. This is because there are still a lot of external interferences that can affect radio frequencies. Weak signals, poor reception, and even connection loss can happen as a result of the wide variety of connection problems.
Applications utilised in aviation, ocean exploration, etc. used to browse the internet using a WiFi hotspot.
Broadcast Li-Fi transmits its signal using visible light along with specialised chips and sensors. Radio waves are used by WIFI to transmit its signal.

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