Our today’s topic is Li-Fi which is the short form of light fidelity which is going to replace our current system of Wi-Fi with its high-speed internet. Li-Fi is a wireless connection that uses light to transfer data and position between two devices. Harald Haas is the man behind it.
Li-Fi derivates the optical wireless communication which uses light from light. Emitting diodes LEDs to transfer data and high communications and many more works similar to Wi-Fi. It derivates the optical wireless communication which uses light from light-emitting diodes LEDs to transfer data and high communications and many other works similar to Wi-Fi likewise.
Compound annual growth was 86 from 2013 to 2018and it was worth much more than 6 billion dollars in 2018 and the market has not developed as much. So Li-Fi still remains in the niche market for internet evolution.
How Li-Fi Work
Thus there is no presence of flickering direct line of sight is not necessary for Li-Fi to transmit data Li-Fi is in the bioelectrical wireless system which transmits data via LEDs or infrared light and made in 2011, unlike Wi-Fi which uses radiofrequency. Li-Fi technology only needs light and a chip to transmit the internet from the light waves. This is an extraordinary advance for our today’s wireless connections. Li-Fi increases the speed and bandwidth of Wi-Fi 3g and 4g.
These sliders become saturated when users’ surfing increases causing it to crash or reducing speed or even interrupting that connection. However Li-Fi with its a band frequency of 200000 GHz versus the 5GHs of Wi-Fi. It’s100 times faster and can transmit more data as per second the study of 2017 by the University of Indonesia rate of 42.8 gigabytes with an in fade light with a radius of 2.5meters whereas the best Wi-Fi can nearly reach 300 megabytes.
Li-Fi technology embers thanks to the German physicist Li-FiHarald Haas a professor and a director of the Li-Fi research and development center at the University of Edinburgh. It could reach your home in just a few years and currently, it is being tested on LED luminaires in offices all around the world. The aeronautical industry is already finding a solution to integrate it into commercial aircraft, airports, hospitals and the city streets are the places where Li-Fi can become popular.
Mobile devices and increasing demand for higher bandwidth systems would develop this social technology in the next decades as noted by the global market. Li-Fi technology analysis and forecast2018 and 2028. This report estimates that the global market will value up to 36billion dollars in 2028within the compound annual growth rate will rise up to 71.2 percent.
Faster the current speed of Wi-Fi isolates at the speed of 11 to 300 megabytes. Li-Fi can give 10 gigabytes and it is also proven that it can give about 224 gigabytes cheaper and more sustainable. Li-Fi is 10 times cheaper than Wi-Fi and requires fewer components and uses less energy. More accessible any light. Sitting can be converted into an internet connection point by just fitting in a Li-Fi emitter.
This prevents intruders from Li-Fi communications through a wireless connection. Li-Fi transmits data without any interruption making communication stable than Wi-Fi. There is no interfering electronic light that does not interfere with radio communication or interrupt any other program or slow down broadcasts from airplanes etc.
Wireless and invisible Li-Fi takes the advantage of light and dispenses the router which means you can operate it without cables. You can even operate it with infinite light which is not visible to the human eye and visible LEDs with low intensity which avoids the disturbance.
We will have to wait a few more years to see if our street lights that illuminate our roads can give us internet at the speed of light.
The country’s I.T. ministry has successfully tested Li-Fi with a pilot jointly with the Indian Institute of technology madras with the lighting company Phillips. The Russian company Stins commons is selling its Li-Fi solution to countries like Israel, America, China, etc.
Another Way of Explain
Li-Fi is the new technology that is all set to serve on your platter very soon. So let’s unravel what is Li-Fi just like Wi-Fi. Li-Fi stands for light fidelity whereas Wi-Fi stands for wireless fidelity. Li-Fi is a technology that works basically via optical communication what I mean by that Li-Fi uses light rather than radio waves which are used by Wi-Fi. It uses lights intensity and it modulates that intensity to transmit data from one place to the other via devices.
There must be one question that what is so special about Li-Fi. It is indeed special because it offers great speed. It offers a speed of nearly 100 gigabytes per second. Can you imagine how humongous it is? Wi-Fi can give you a speed but not that much. We are all set to live in a sci-fi world that is the science fiction world as you have watched in movies and all other stuff etc.
The term Li-Fi was first coined by Professor Harald Haas in one of his ted talks in 2011 and since then the technology has grown a lot. It has traveled a lot with a lot of upgrades and now it is all set to rock the floor. Li-Fi technology was first introduced at the world mobile congress Barcelona. Li-Fi was co-founded by Harald Haas along with professor Afghani.
Pros and Cons of Li-Fi
Li-Fi can function very safely in electromagnetic interference areas just like airplanes etc. The normal LEDs which you use at your home can act as Li-Fi devices. You are watching your smartphone and some of the signals are sent via your led light, that is just great but with every new technology, there are pros and cons.
So is the case with Li-Fi as well. Li-Fi offers a very short range because of the light signals. It uses and it also offers hindrances that mean it can act as a bane as well as a boon. It cannot penetrate the walls and that’s why it is very impossible or it’s a lot impossible to hack into the system working over Li-Fi connections. But over Wi-Fi, it is very easy to hack from remote access among other things. If we talk then the reflected light can also have a speed of around 70 megabits per second.
So that is also a very high speed and if you are thinking that light when it will transmit data it will flicker. It doesn’t flicker though it does it is not visible to the naked human eyes. So don’t worry about it. It will send a quite easy and quite flawless signal. That’s just amazing and that too for a country that is striving hard on the per capita income like India. But the installation cost and short-range and low reliability all these things can we can consider as the bottleneck of this technology.
The technology regarding virtual light communication had been in the human mind since the 1880s and later on, it was fully developed into a complete technology. If you are thinking that it’s completely new it’s not the case. Let’s look at some of the applications which this Li-Fi can facilitate and trust me this is amazing just imagine that you are communicating with each other with the help of light. Present around you isn’t that amazing nowadays we are communicating with the help of radio signals.
That’s why we have mobile towers and all those things but they can be replaced with the help of Li-Fi but as I said that it has its own cons but in the near future we all can expect that we will be living in a futuristic world where the ultimate cosmic limit. Light will show us the way and hopefully, we will lead our life in a lot lighter way. This was fun intended as it is highly safe and secure because it cannot be hacked from a remote distance. It finds its application in building automation and then there comes the underwater applications.
Most of the underwater gadgets use long wires and a lot of other equipment to transmit data and all that causes a lot of hindrances and a lot of obstructions to facilitate the technology in a good way. So it can provide a very good alternative to the underwater systems as well and can reduce those limitations for the submarines etc.
Aviation’s a very prominent use actually because inside the airplane normal signals do not work in a better way because of the electromagnetic inferences and all but this can act as a very good alternative to that as well then in the hospitals. It can find its use because patients and doctors can communicate very easily and at a very high speed. So it also gives that application in vehicles. Also, it finds its use.
Just imagine that you are driving a car and you are sending some sort of signal to stop or to move or for a pass you are requesting with the help of your backlight or the front light. It is just revolutionary, isn’t it? So that kind of revolution is all set to come so fasten your seat belts. In industrial automation also where real-time automation is needed it can provide an alternative to the wireless LAN, which we use in the advertisement industry.
It can provide a lot of things which can make the life of the customer and the seller easier. For example, if there is a discount or there is some kind of offer on a product that can be directly transmitted to the smartphones with the help of all the LED and all the lights used inside the shop or the malls. Don’t you feel it’s just revolutionary?
Just like a scientific fiction movie in the field of education also it has a very high possibility that imagines that students are interacting with their teachers with the help of smartphones and all those things and they are having a very good time and a gala time in the classroom. So that’s also an amazing thing.
Imagine where we have LEDs in street lights, in cars, in offices, in homes. Now imagine that these LEDs connect to the internet. Li-Fi uses light on a particular led light to transmit the data wirelessly which means we can use laptops, we can use our smartphones to access the internet using ordinary off-the-shelf led light bulbs. That will enable us in a completely new connected world.