In the previous topic, we have to able to you and we understand this is the first one was the U.S.
and the
six, you can come here because you just saw it.
And we can provide the option of security because these are the.
So let's discuss about the idea of a software defined do you or a software defined you work for a software,
you can provide the first functionality, the flexibility, the piece of software defined.
Do you buy everything that is contained, the functionality of your system without any contribution
yet understood this by your example.
Suppose in my in my software defined rule you are using a malicious code to a.
And they want to change this modulation scheme to or nature and itude modulation, then what I have
to do, I have to change some line, of course, and my system will work on the one particular modulation.
Therefore, the this flexibility provided us who operates without interference.
So if an end user using it as a job, we can update the system without any interference because it's
kind of a you see, in the case of Windows operating system, if you are using windows and you are using
a Windows 10, you get regular updates without any interference.
So subsystem advantage comes with that.
So if you find you and all the programming will happen in the basement section, there will be no issue
to us.
We can support different kinds of opposition.
For example, suppose your phone can operate on 2G, 3G and 4G, all on a single handset.
If you have a cell phone, you can use your own, you can use your own as well as we can use for you.
So that's the beauty of the software defined.
Do you the same hardware can be used for the different standards.
Moreover, due to the modification functionality, the physical size of the hardware decreases.
It can perform well.
People have the advantage of flexibility.
The second advantage is in control.
So this is a very important part.
As we have seen in the case of different, they are different and we have two products which provide
the game.
The first one was a power amplifier, the power amplifier, as it is included, came to us and we have
a low noise amplifiers which can also provide to us.
If you want to transmit a signal to more distance, we can increase that.
And in the case of reception, when we received the signal from and.
So it's strength or amplitude very low, then we can indeed gain.
And so that it can be reduced to the exact level at the receiver.
So using an automatic gain control function, we can use distally, always control amplifier.
We can increase the village level so we can increase the gate at the receiver so that it can meet our
performance.
Even we can write a function, continuously track the desert and you can automatically adjust the gate.
So that is that automatic gain control in software defined review system.
The second the third thing, what we can do using the.
Asgeir, that is called Distel, suppose if the output of your transmuter using a star system is for
the transmitter and if you want to transmit on this frequency, see your 50 megahertz.
So for transmitting on this frequency, you have to use a filter because some other interference does
not come with the system.
So you have used the filter to do so.
But if you want to transmit on nineteen hundred megahertz, then you then you have to use a freezer
that caused the problem.
So you have to change and all those things in the station of use.
But the help of digital through you can filter all the application in the baseband itself and even you
can write the code to cancel or you cancellation in the basement.
So that loss of signal processing part performing the pacemen and your three options are let's suppose
you receive a signal, the receiver, multiple multi-color.
So and if you want the particular band to desert your receiver, you can filter out that bank in the
basement itself.
The third one is a diverse community support.
So there are a lot of open source software views.
We are going to discuss and there are open source hardware sort of level which we can all associate
or you can use the software supplement obviously available the website or other sources given to us,
and we can start collecting evidence of our own system.
So that is possible to the diverse community support.
And the next one that you're testing and implementation.
So we get test different communication standards.
For example, suppose we have a 4G standard, we have a 5G standard.
So using and using that as the best estimate, we can easily test all the communication standards that
Fujio 5G because we just have to do this processing and we can change the model and all those parameters
in the basement section itself.
So that is another advantage of software.
Do you think it can be implemented?
The biggest advantage of the software defined radio that can of you as you can.
There is a very vicious.
150 for a nation so visible spectrum, you can see the frequency spectrum.
This is a 800 megahertz.
This is available at eighteen hundred megahertz.
So this is the frequency of five point three years.
So their frequency bands each applicant for the particular nation.
And this is a good idea.
So if you want to see the particular frequency, we have to take pollution from government.
You can trust on that particular frequency sometime.
What's happened?
This particular frequency is was just not used.
And it is very kind of this called voice is in the piece of TV.
So in the case of your TV spectrum, they are making the cell phone is based and.
If someone want to use whitespace, then you have to of forward.
I suppose this isn't a user from different company and the particular time spectrum is vacant or someone
is not using this one, then this usually uses spectrum.
So there is a whole spectrum that we are discussing the electoral.
What I want to tell you that using a cognitive radio, can you sense this is a spectrum we can use?
So what is cognitive radio?
This is our congressional trivia question, plus the functionality of sense available.
So suppose this is a software defined radio.
We have placed some sensors.
We have some chatter on it so so that you can sense if there is a spectrum.
So it is has the knowledge there is spectrum, then it can continuously checking if there is a break
on the spectrum, it can learn from that part and it can add up to that frequency so that other user
can use that particular frequency.
So in some senses, this book is cognitively, cognitively.
The thing is the plus intelligence.
If we provide some intelligence to a software defined radio so that you can test.
In Egypt and throughout the day, it is known in the community where you.
Are in the.
We have learned about that one of the workers there and the flexibility provided by you to the basement
section as well as in the section.
So next, we are going to learn is an evolution of views on the journey of getting started.
And it's come to the present day software defined.