What is Li-Fi Technology

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Today, technology is changing as fast as you and we cannot imagine. In this fast-changing world, many of our tasks have become easy and all of this goes to technology. To date, Wi-Fi technology is used to create a wireless network but in the coming time, it may be replaced by Li-Fi Technology. For your information, I would like to tell you that testing on this technology is going on in India. This technology also has some advantages and some drawbacks as well, which we will discuss in this post.

The world's growing passion for more data at an accelerated pace is pushing WiFi's capacity to its limits. By 2019, it is predicted that the world will exchange about 35 quintal bytes of data every month. The emerging technology for exchanging data using the light of varying intensity can be in accordance with our desire to achieve higher speed limits. Now it will be known from the use of Li-Fi Technology that this technology.

What is Li-Fi 

LiFi's full name is Light Fidelity. To put it simply, Li-Fi Lite is an abbreviation for Fidelity, as is Wi-Fi for Wireless Fidelity. Li-Fi is a wireless technology that transmits high-speed data using visible light communication. This technology was started by Professor Herald Haas of the University of Edinburgh. In 2011, Herald Haas put the Li-Fi Concept in front of the people and told how you can transmit or communicate your data with the help of Li Light. Since then, they have been working on this technology.

LiFi Technology Light Fidelity All other technology that transmits or communicates data. Technology is many times faster than all of them. In one of its tests, Professor Harald Haas showed the data by transferring it, then at that time, the data was transferred with a speed of 224 GB / second through LiFi.

Li-Fi is a wireless technology that transmits high-speed data using visible light communication. According to lab experiments, 224 gigabits per second is the speed seen for Li-Fi. Li-Fi is a subset of optical wireless communication (OWC). This technology uses a light-emitting diode (LED) to transmit data wirelessly.

Li-Fi communication is a communication protocol similar to Wi-Fi established by IEEE that defines the PHY and MAC layer for compatible solutions and delivers sufficient data rates to transmit audio, video and multimedia services.

Li-Fi uses optical light to transfer data via wireless. This allows linking with other Layers in case of MAC Layer TCP IP Protocol.

History of LiFi

It was first demonstrated in 2011 by TED Talk by German physicist Harald Häss. The technology was then used at the 2012 Consumer Electronics Show in Las Vegas to exchange data using a pair of Casio smartphones to exchange data using smartphones that are of varying intensity from their screens It was able to detect up to ten meters using light.

A security aspect of Visible Light Communication (VLC) is that it is a Line of Sight function, which means that the device must have a line of sight on the light transmitter. This is because it cannot penetrate the walls of light radio signals, so it is more difficult to hack wireless internet signals.

How does LiFi work

Implementing Li-Fi requires setting up a VLC system for data transmission. Li-Fi is a subset of OWC technology that uses LED as a variant. This system requires a transmitter and constant current. Li-Fi is applied to the downlink transmitter using white LED light bulbs that illuminate only by applying a constant current. However, more current will have more luminance and therefore more data transfer speed.

The process of this is very simple -

LED - ON - Transmission Digital 1.

LED - OFF - Transmission Digital 0.

An LED can be turned on and off at very high speeds, providing good opportunities for transmitting data. The data you want to encode depends directly on the rate at which the LED Flicker does.

Use of  Li-Fi

There will be an LED Bulb in LiFi Technology, as far as the light range of that bulb will be, that will be the range of LiFi. To increase the range, a lot of different lights will be used to cover the entire area of ​​your Home or Office, it will be the same way as many Routers is installed one after another to increase the range of WiFi.

Benefits of Li-Fi

Li-Fi is much cheaper than Wi-Fi and does not require a license. It is a safe means of communication because optical waves do not pass through walls. It works at the optical level on very fast means of communication and it can transmit thousands of data streams simultaneously in parallel at high speeds.

• LiFi Technology will prove to be very helpful in preventing problems like Hacking.

• In LiFi, a lot of devices can be connected simultaneously and even then there is no difference in its speed.

• Through this technology, more data transfer can be done in less time. It will be 100 times faster than Technology WiFi.

• LiFi has the advantage of being useful without electromagnetic interference in Electromagnetic Sensitive Areas such as aircraft cabins, hospitals, and nuclear power plants.

Who discovered LiFi Technology

LiFi Technology was invented in 2011 by Harald Haas, a professor at Edinburgh University. It is also a Wireless Networking Facility like Wi-Fi.