In looking at gmsk_demod currently, it is using M&M clock recovery, but
here:
in 2011 it was switched to use PFB clock sync before things were
reorganized.
Was the switch back to M&M intentional?
On Sat, Aug 31, 2013 at 1:09 PM, Ryan P. [email protected] wrote:
In looking at gmsk_demod currently, it is using M&M clock recovery, but
here:
in 2011 it was switched to use PFB clock sync before things were
reorganized.Was the switch back to M&M intentional?
It was switched back intentionally. Since GMSK uses a Gaussian filter
instead of an RRC, the PFB recovery loop was acting very odd and
distorting the signal. At the time, I was too busy with other projects
to figure out why, so I just went back to the known-working M&M loop.
The PFB recovery block should work for this modulation, though, so it
would be good if someone wants to work on it, I would really
appreciate it.
–
Tom
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