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move constellation symbols definition to common.py

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Roman Zeyde
2014-07-12 08:26:57 +03:00
parent daaaac4318
commit a49e839dc1
2 changed files with 5 additions and 3 deletions
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4
common.py
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@@ -12,6 +12,10 @@ carrier_index = 0
Fc = frequencies[carrier_index] Fc = frequencies[carrier_index]
Tc = 1.0 / Fc Tc = 1.0 / Fc
symbols = np.array([complex(x, y)
for x in np.linspace(-1, 1, 4)
for y in np.linspace(-1, 1, 4)]) / np.sqrt(2)
Tsym = 1e-3 Tsym = 1e-3
Nsym = int(Tsym / Ts) Nsym = int(Tsym / Ts)
baud = int(1/Tsym) baud = int(1/Tsym)

4
sigproc.py
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@@ -56,9 +56,7 @@ class QAM(object):
S = self.symbols[index] S = self.symbols[index]
yield self._dec[S] yield self._dec[S]
_xs, _ys = np.linspace(-1, 1, 4), np.linspace(-1, 1, 4) # QAM-16 modulator = QAM(common.symbols)
_symbols = np.array([complex(x, y) for x in _xs for y in _ys]) * np.sqrt(0.5)
modulator = QAM(_symbols)
modem_bps = common.baud * modulator.bits_per_symbol * len(common.frequencies) modem_bps = common.baud * modulator.bits_per_symbol * len(common.frequencies)