def __init__(self,
constellation_points=_def_constellation_points,
gray_coded=_def_gray_coded,
differential=True,
*args,
**kwargs):
"""
Hierarchical block for RRC-filtered DQPSK modulation.
The input is a byte stream (unsigned char) and the
output is the complex modulated signal at baseband.
See generic_mod block for list of parameters.
"""
constellation_points = _def_constellation_points
constellation = digital_swig.constellation_dqpsk()
if constellation_points != 4:
raise ValueError(
'Number of constellation points must be 4 for DQPSK.')
super(dqpsk_mod, self).__init__(constellation=constellation,
gray_coded=gray_coded,
differential=True,
*args,
**kwargs)
def __init__(self, mod_code=_def_mod_code, differential=False, *args, **kwargs):
pre_diff_code = True
if not differential:
constellation = digital.constellation_qpsk()
if mod_code != mod_codes.GRAY_CODE:
raise ValueError("This QPSK mod/demod works only for gray-coded constellations.")
else:
constellation = digital.constellation_dqpsk()
if mod_code not in set([mod_codes.GRAY_CODE, mod_codes.NO_CODE]):
raise ValueError("That mod_code is not supported for DQPSK mod/demod.")
if mod_code == mod_codes.NO_CODE:
pre_diff_code = False
super(qpsk_mod, self).__init__(constellation=constellation, pre_diff_code=pre_diff_code, *args, **kwargs)
def __init__(self, mod_code=_def_mod_code, differential=False, *args, **kwargs):
pre_diff_code = True
if not differential:
constellation = digital.constellation_qpsk()
if mod_code != mod_codes.GRAY_CODE:
raise ValueError("This QPSK mod/demod works only for gray-coded constellations.")
else:
constellation = digital.constellation_dqpsk()
if mod_code not in set([mod_codes.GRAY_CODE, mod_codes.NO_CODE]):
raise ValueError("That mod_code is not supported for DQPSK mod/demod.")
if mod_code == mod_codes.NO_CODE:
pre_diff_code = False
super(qpsk_mod, self).__init__(constellation=constellation,
pre_diff_code=pre_diff_code,
*args, **kwargs)
def __init__(self, constellation_points=_def_constellation_points,
differential=True, *args, **kwargs):
"""
Hierarchical block for RRC-filtered DQPSK modulation.
The input is a byte stream (unsigned char) and the
output is the complex modulated signal at baseband.
See generic_demod block for list of parameters.
"""
constellation_points = _def_constellation_points
constellation = digital_swig.constellation_dqpsk()
if constellation_points != 4:
raise ValueError('Number of constellation points must be 4 for DQPSK.')
super(dqpsk_demod, self).__init__(constellation=constellation,
differential=True,
*args, **kwargs)
def dqpsk_constellation(m=_def_constellation_points):
if m != _def_constellation_points:
raise ValueError("DQPSK can only have 4 constellation points.")
return digital_swig.constellation_dqpsk()
def dbpsk_constellation(m=_def_constellation_points):
if m != _def_constellation_points:
raise ValueError("DBPSK can only have 2 constellation points.")
print "eftaseeeeeee \n"
return digital_swig.constellation_dqpsk()
def dqpsk_constellation(mod_code=_def_mod_code):
if mod_code != mod_codes.GRAY_CODE:
raise ValueError(
"The DQPSK constellation is only generated for gray_coding. But it can be used for non-grayed coded modulation if one doesn't use the pre-differential code."
)
return digital.constellation_dqpsk()
def dqpsk_constellation(mod_code=_def_mod_code):
if mod_code != mod_codes.GRAY_CODE:
raise ValueError(
"The DQPSK constellation is only generated for gray_coding. But it can be used for non-grayed coded modulation if one doesn't use the pre-differential code."
)
return digital.constellation_dqpsk()
def dqpsk_constellation(m=_def_constellation_points):
if m != _def_constellation_points:
raise ValueError("DQPSK can only have 4 constellation points.")
return digital_swig.constellation_dqpsk()
