Commit Graph

3 Commits

Author SHA1 Message Date
Denny
95aa9f8803 Adds automatic gain control to P25 C4FM decoder to condition the
samples prior to interpolation.

Resolves issue with using incorrect quadrature index when pulling a
sample from the interpolating buffer.

Resolves issue where the instrumented version of the interpolating
buffer was being constructed in the non-interpolated decoder component.
2018-04-18 05:47:17 -04:00
Denny
45a6c5a0b6 330 WIP - implements the new data-directed symbol timing and phase
error calculator.  After increasing the gain for symbol timing, this
new symbol evaluator class seems to track the signal very accurately
despite lots of noise and ISI.
2018-03-04 11:42:23 -05:00
Denny
148ddd0bd5 330 WIP - P25 C4FM decoder fully functional using DQPSK decoder and
new symbol timing error detector.  Each component now has a subclass
that supports instrumentation for use with the DemodulatorViewerFX
application.
2018-02-25 08:56:34 -05:00