‫Now we come to another key concept that how we can generate the PSC signal.
‫Using the quadrature amplitude modulation.
‫This is the equation of the quadrature, amplitude modulation.
‫And here this is the eye component.
‫And this is the key component of the quadrature amplitude modulated signal.
‫Now, this expression can also be written in this form where this is the.
‫Amplitude.
‫And this is the face.
‫And if we want to see this in their diagram, this is the amplitude.
‫And this is deep fears heat.
‫So here we can see that we can vary the eye and dequeue in order to change the amplitude and in order
‫to change these features.
‫Now, if we vary I and in such a way that the amplitude remains constant, but only fears changes between
‫different symbols.
‫Then we will end up in a situation like this.
‫And in this situation, we can see that all the constellation points are all dissembles, lie or not,
‫on the circle because the amplitude is constant.
‫Ah, in other words, their energy is constant, but only their fears is changing.
‫So this signal now in its form.
‫In this form, it is the fierce shift giving signal.
‫Arpey is a signal.
‫So in other words, by if we can generate the fear shift, giving signal, using the quadrature amplitude,
‫more relation if we adjust the iron BCU in such a way that the amplitude remains constant.
‫And only these fierce changes.
‫So we can see that the features shift giving is a special case of the quadrature amplitude modulation.