For a general idea of how demodulation is done in gnuradio, take a look at how digital.clock_recovery_mm_ff() is used.
For an idea of how OOK threshold decision is made, grab datasheet for SX1231 chip, and look at OOK demodulator section, which shows how peak detection works (with diagram). on-off-keying is generally regarded as not the first choice due to noise susceptibility. But i think it would be useful to experiment with it. On Thu, Jul 12, 2012 at 12:14 PM, sibar002 <[email protected]> wrote: > > Hello, > > I have recently been working on an OOK modulation and demodulation block. I > am using GNU Radio 3.6.1. I achieved the OOK modulation by modifying the > digital_constellation.cc file and changing the constellation points to > (1+0j) and (0+0j). The modulation part works well, but I am having trouble > with the demodulation. I am unable to demodulate the information that I am > receiving. I was wondering if any one could tell me why this is happening? > I > would greatly appreciate any help or advice. Thank you for your time. > > Sam > -- > View this message in context: > http://old.nabble.com/OOK-Demodulation-tp34152693p34152693.html > Sent from the GnuRadio mailing list archive at Nabble.com. > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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