Tom,
There are few changes required in ur FG
1: PSK/QAM Modulator takes packed byte input (8 bits per byte) instead of
1 bit per byte
see gnuradio>digital>generic_mod_demod.py
2: Constellation sink work only for PSK modulation M=2,4,8.To see output constellation of QAM-16 u will have to first downsample it to 1 sample_per_symbol and then use wx-scope-sink in XY-Mode Down-sampling can be done using symbol-timing blocks or manually (delay+keep1inN combination) as in attached FG -Adeel On Sat, Jul 6, 2013 at 11:02 PM, tom sutherland <alphatoz...@yahoo.com>wrote: > Attached grc file > > ------------------------------ > *From:* Adeel Anwar <adeela...@gmail.com> > *To:* tom sutherland <alphatoz...@yahoo.com>; discuss-gnuradio@gnu.org > *Sent:* Friday, July 5, 2013 10:25 PM > *Subject:* Re: [Discuss-gnuradio] Simple QAM project > > > Can u attach ur GRC file? > > -Adeel > > > On Fri, Jul 5, 2013 at 5:48 AM, tom sutherland <alphatoz...@yahoo.com>wrote: > > I am trying to get data through a QAM-16 Modulator and just display the > data stream on a Constellation Sink. I have 8khz sampled 8-bit data(char) > going into the QAM Mod block. I have the output of the QAMmod block going > directly into the Const Sink. I am not seeing anything on the Constellation > Sink. I put a throttle block in but that didn't help. > Any thoughts on what could be wrong? I have followed the GNUradio > tutorial: Part 4 by balint256 but didn't help. > Thanks...DT > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > >
simpleSinewave.grc
Description: application/gnuradio-grc
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