def __init__(self, M, phaseOffset=0):
"""Initializes the PSK object.
Parameters
----------
M : int
The modulation cardinality
phaseOffset: float, optional
A phase offset (in radians) to be applied to the PSK
constellation.
"""
Modulator.__init__(self)
# Check if M is a power of 2
assert 2**math.log(M, 2) == M
# Generates the constellation
symbols = self._createConstellation(M, phaseOffset)
# Change to Gray mapping
# noinspection PyUnresolvedReferences
symbols = symbols[gray2binary(np.arange(0, M))]
self.setConstellation(symbols)
def __init__(self, M, phaseOffset=0):
"""Initializes the PSK object.
Parameters
----------
M : int
The modulation cardinality
phaseOffset: float, optional
A phase offset (in radians) to be applied to the PSK
constellation.
"""
Modulator.__init__(self)
# Check if M is a power of 2
assert 2 ** math.log(M, 2) == M
# Generates the constellation
symbols = self._createConstellation(M, phaseOffset)
# Change to Gray mapping
# noinspection PyUnresolvedReferences
symbols = symbols[gray2binary(np.arange(0, M))]
self.setConstellation(symbols)
def test_gray2binary(self):
vec = np.array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
np.testing.assert_array_equal(
conversion.gray2binary(conversion.binary2gray(vec)), vec)
def test_gray2binary(self):
vec = np.array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
np.testing.assert_array_equal(
conversion.gray2binary(conversion.binary2gray(vec)),
vec)
