New answers tagged fsk
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Trying to imitate a 4-FSK modem with a C program
I moved forward.
Obviously the interpolation method was too harsh (linear).
I applied a windowed cardinal sine interpolation (sinc).
I added a low-pass gaussian filter
The result is much closer to ...
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Trying to imitate a 4-FSK modem with a C program
Since it's 4-FSK, the baseband signal is a PAM-4 signal
If you define your baseband to be the output of an FM demodulator, yes.
If you mean "baseband" as in "complex equivalent ...
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Accepted
Why does my 2-FSK samples have the max value across the whole band?
Answering my own question. I/Q samples may have different types depending on the device it's intended for, for example:
HackRF: int8_t (*.cs8, *.sc8, *.c8)
RTLSDR: ...
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