I'm playing with the GMSK demodulator block. I have a signal at 24KHz, which I down-shift to DC, using a freq_xlating_fir_filter. The signal is 200baud MSK, so the filter bandwidth I set to 400Hz, then into the GMSK block, arranging for there to be two samples per symbol. This seems to be producing a nice stream of 1s and 0s at 200bps.
Since the bits are encrypted coming from the source, I have no way of knowing whether they're the "right" bits or not, so I want to confirm that my setup is correct for the GMSK block. I think it needs basebanded data, with the input spectrum arranged around DC, and by default, it uses 2 samples per symbol. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
