What a Li-fi! And how does it work? | How Does LiFi Work?

 After getting a lot of requests, today we are going to talk about Li-Fi. First of all, let's take a look at how this Li-Fi works.

To put it bluntly, LiFi is the light best WiFi WiFi transmits data using the same radio frequency as in the case of LiFi, light is used to transmit data. The main thing is that it is possible to transmit data using the lines that we use for LED light bulbs for light source at home. When you let a constant current flow in an LED bulb, that bulb gives you a constant light.

And every time we turn off the electric light, the light goes off too. It's very simple. I also know that in the digital world, everything is determined above 0 and one.

So in this case if there is no current flow through the bulb then it will be zero. And when the maximum current flows through the bulb, it will be one.

And in this way, if the light bulb is flickered on, that is, it is turned off and on very fast, then the data sheet of Jiru and One is created.

And it is possible to run WiFi by receiving this data set at the receiver end. Do you think that if the light bulb in your house is flickered repeatedly, you may have a problem in the house?

But let me tell you, if the bucket in your house is connected to an alternating current, it will turn on and off fifty times a second because the frequency of the electricity we use at home is fifty hertz and it will not catch your eye. . However, if you turn on the camera of the mobile phone, but it can be caught, but you will not be able to understand the flickarine in the case of Lifi because there is a lot of frequency used.

In this case, the connection from the Internet to your home will first go to a modem and from the modem to an LED driver that will control the LED lights in your home.

At the receiver end, the light signal will be converted to an electric signal and it will be given to your computer with the help of which your computer will get the internet connection. This is the simple diagram of Lifi.

But why do we need WiFi even though we have WiFi? There are three main reasons behind this. One is that our data needs are slowly increasing.

 

Also, not all of the devices we use can be connected to the cable.

So everything needs to be wireless and thirdly the Internet of Things means we used to use the internet only on computers and mobiles but now we need internet on everything from our watches to our TV fridges.

And after that the day is going to come when the house will be connected with lock key and internet.

So we need high speed internet for all these things. The biggest problem with our WiFi is that its speed is very low.

However, if you have two or three devices connected to your home WiFi, then you do not understand that the WiFi speed is low or fast.

It will seem normal to you.

But if you go to a public place where everyone has access to Wi-Fi, such as a railway station stadium or a large building, then you will realize that Wi-Fi is not able to handle so many clients at once.

In addition to the speed drop as the client increases, the WiFi security system is not very good. And since you can't even see who's using your WiFi, hacking it is relatively easy.

So who are we when we first hear about Lifai? We are told that each device will have a much larger throw put, meaning that each device will have a much larger pipeline for data transfer and receiving. Then it is said that it will be much much faster and the handset will be 100% secure. If you want to use LiFi, you have to be close to that light, so its security will be much higher than Wi-Fi.

However, the reality is much different. In 2017, when the first few WiFi devices came, it was seen that their speed is much lower. Only around 43 Mbps.

However, in the same year, i.e. in 2017, if you went to buy a WiFi device, you would easily get 100 Mbps and even 300 Mbps WiFi in the market.

Gigabit Life is available now but its price is much higher. There is another problem that you have to keep the lights on to use the internet.

This means that if you think that you will keep the lights off during the day, but the Internet will not work, it does not mean that there are problems in this life, so this technology is not so successful.

And the WiFi that used to be available was simple, which means you have to send or receive data, but now there is Duplex WiFi which allows you to send and receive data at the same time.

 

So in the case of Wi-Fi, the problem of speed has become much less than before.

For all these reasons, Lifai was supposed to be as successful as ever. This technology could not do that.