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modulation recognition

Posted: Thu Jun 11, 2020 11:03 am
by myyoucef
Hi, I have a question that seems stupid,
Since each frequency has an allocated band, given for the purpose of its use. Why we need the modulation recognition?
for example FM radio have a frequency allocation in 88–108 MHz,
so if I find myself in a range of 88–108 MHz, then I know that the captured signal is FM modulated.

thanks.

Re: modulation recognition

Posted: Thu Jun 11, 2020 12:27 pm
by myyoucef
There is a lot of research in the topic of automatic modulation recognition.
my question is that, we know that each radio frequency has a reserved allocation band.
spectrum image
Image

if we capture a signal in the range of 525 -1705 kHz , we know that this spectrum is reserved for AM radio, so why we need to recognize the modulation since we know that’s AM modulation from the range 525 -1705 kHz.

thank you.

Re: modulation recognition

Posted: Fri Jun 12, 2020 1:14 pm
by Username
Well that think is outdated a lot! :lol: