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LI-FI TECHNOLOGY



WHAT IS LIFI TECHNOLOGY?

LiFi is a wireless technology that holds the key to solving challenges faced by 5G. LiFi can transmit at multiple gigabits, is more reliable, virtually interference-free, and uniquely more secure than radio technology such as Wi-Fi or cellular.

ECOSYSTEM: -



LiFi is a wireless technology that uses light rather than radio frequencies to transmit data. The technology is supported by a global ecosystem of companies driving the adoption of LiFi, the next generation of wireless that is ready for seamless integration into the 5G core.





HOW IT WORKS?

In a digital transmission system, data will be converted into binary bits in the form of zeros and ones equivalent to ‘on’ and ‘off’ states. Visible light is an ultra-fast electromagnetic wave with unlimited bandwidth to utilize. High-speed switching of light can’t be detected by human eyes but highly sensitive photodiodes can efficiently detect the modulation of light interact with the detectors.

Compared to radio waves used in conventional wireless systems, visible light has a thousand times higher bandwidth. Unlimited bandwidth makes it one of the most efficient solutions for data-intensive applications. Li-Fi technology is a fast, full-duplex, and bidirectional communication system capable of data rate up to 224 gigabits per second.



     Radiofrequency communication requires radio circuits, antennas, and complex receivers, whereas LiFi is much simpler and uses simpler direct modulation methods similar to those used in low-cost infrared communications devices such as remote-control units.


 





LIFI VS. WIFI: WHO GETS TO WEAR THE WIRELESS NETWORKS CROWN?

LiFi technology is faster, cheaper, and even more secure than Wi-Fi. Its main advantages include:

Faster: the current speed of Wi-Fi oscillates between 11 and 300 Mbit/s, while that of LiFi is also highly variable according to the last studies carried out. The most widely accepted speed is 10 Gbit/s, but it has been proven that it could reach 224 Gbit/s and that a 1.5 Gbit film could be downloaded in thousandths of a second.

Cheaper and more sustainable: it is up to 10 times cheaper than Wi-Fi, requires fewer components, and uses less energy. All you have to do is turn on a light!

More accessible: any light fitting can easily be converted into an internet connection point, as only a simple LiFi emitter needs to be fitted.

More secure: light does not pass through walls like radio waves do, and this prevents intruders from intercepting LiFi communications through a wireless network.

 No interference: electronic light does not interfere with radio communications, interact with other systems, or compromise transmissions from aircraft, ships, etc.

Wireless and invisible: LiFi takes advantage of lights and dispenses with the router, so it works without the need for cables. In addition, it can operate with infrared light, which is invisible to the human eye, or with visible LED light at very low intensity so as to avoid disturbance.

More reliable: LiFi transmits its signal without interruptions, making communication more stable than with Wi-Fi.

Limitations of Li-Fi: -

  • Device must be compatible – Li-Fi enabled devices are required to configure network
  • Any distraction could stop connection (requires line of sight communication)
  • Integration and coordination of device manufacturers are required for standardization.

CONCLUSION: -

Despite the fact that Li-Fi is an efficient, fast, and cost-effective technology, more research and development has yet to be done in this area before we have a flexible solution. Due to the higher demand for high-speed data, many wireless technologies are evolving and emerging. Li-Fi technology also has huge potential due to its efficient and cost-effective nature.












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