represent a communication signal on complex envelope form

[ASHLY19]

Hi everyone:
we know that The communications signal may be written as the real part of a complex waveform with real and
imaginary parts, s(t)=Re{ a(t) exp(j theta) } with complex envelope {a(t) exp(j phi)},my question is why we represent the signal on the In_phase and quadrature form i.e on the I&Q form what is the benefits of this representation ?

[GerdW]

Hi Ashly,

don't you have any books on this topic at your University/school/company?

[ASHLY19]

Hi GerdW,

I have a good background on digital communication but my question is what are the benefits of I&Q representation on analog communication?

[GerdW]

Hi Ashly,

what are the benefits of I&Q representation on analog communication?

Read the chapter on Demodulation in the linked Wikipedia article to learn about benefits…