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Works for QPSK64.

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Roman Zeyde
2014-06-19 18:32:26 +03:00
parent bc067c8bbd
commit 1ad96d9716
2 changed files with 12 additions and 8 deletions
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7
sigproc.py
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@@ -18,7 +18,7 @@ class QPSK(object):
def __init__(self, bits_per_symbol):
self._enc = {tuple(): 0.0} # End-Of-Stream symbol
index = 0
amps = [0.6, 1.0]
amps = [0.4, 0.6, 0.8, 1.0]
N = (2 ** bits_per_symbol) / len(amps)
for a in amps:
for i in range(N):
@@ -30,7 +30,8 @@ class QPSK(object):
self.bits_per_symbol = bits_per_symbol
def encode(self, bits):
assert len(bits) % self.bits_per_symbol == 0
trailing_bits = len(bits) % self.bits_per_symbol
bits = bits + [0] * (self.bits_per_symbol - trailing_bits)
for i in range(0, len(bits), self.bits_per_symbol):
s = self._enc[ tuple(bits[i:i+self.bits_per_symbol]) ]
yield s
@@ -44,7 +45,7 @@ class QPSK(object):
yield b
qpsk = QPSK(bits_per_symbol=4)
qpsk = QPSK(bits_per_symbol=6)
def test_qpsk():
q = QPSK(bits_per_symbol=2)