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recv: define integration gain as member variable

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Roman Zeyde
2015-08-16 18:30:30 +03:00
parent 835841bf2e
commit b5f8e07ae2
1 changed files with 2 additions and 1 deletions
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amodem/recv.py
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@@ -28,6 +28,7 @@ class Receiver(object):
self.equalizer = equalizer.Equalizer(config) self.equalizer = equalizer.Equalizer(config)
self.carrier_index = config.carrier_index self.carrier_index = config.carrier_index
self.output_size = 0 # number of bytes written to output stream self.output_size = 0 # number of bytes written to output stream
self.freq_err_gain = 0.01 * self.Tsym # integration feedback gain
def _prefix(self, symbols, gain=1.0): def _prefix(self, symbols, gain=1.0):
S = common.take(symbols, len(equalizer.prefix)) S = common.take(symbols, len(equalizer.prefix))
@@ -140,7 +141,7 @@ class Receiver(object):
err = np.mean(np.angle(err))/(2*np.pi) if len(err) else 0 err = np.mean(np.angle(err))/(2*np.pi) if len(err) else 0
errors.clear() errors.clear()
sampler.freq -= 0.01 * err * self.Tsym sampler.freq -= self.freq_err_gain * err
sampler.offset -= err sampler.offset -= err
def _report_progress(self, noise, sampler): def _report_progress(self, noise, sampler):