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[Discuss-gnuradio] Simple QAM mod/demod
From: |
Fabián Kozynski |
Subject: |
[Discuss-gnuradio] Simple QAM mod/demod |
Date: |
Mon, 1 Oct 2012 16:27:01 -0400 |
As sanity check I'm trying a simple flowgraph in GRC with a QAM mod/demod:
Vector Source ==> Throttle ==> QAM Mod ==> QAM Demod ==> Unpacked to Packed ==> File Sink
The parameters in the mod/demod are as default. I also have a File Sink before the mod.
In the output I see first a bunch of zeros, then a bunch of random numbers and after 20 or so bytes I get a sequence with the same period as the original one, but different numbers. I suppose this is a problem of phase sync.
What's the right way to simulate a simple mod/demod? How do I add sync between mod and demod?
Thanks,
Fabián
- [Discuss-gnuradio] Simple QAM mod/demod,
Fabián Kozynski <=