Hi, I am new to gnuradio, I want to develop 4FSK system. transmitter and receiver. Is there any existing 4FSK transceiver system in gnuradio ? Also, which one of the following two is the best/optimum 4FSK demodulator for low SNR?
a. Quadrature demodulation b. Correlator demdulation (autocorrelate tones-->energy detect->pick largest) Which one of the above can be implemented in gnuradio ? Marc
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