diff options
Diffstat (limited to 'gr-digital/python/qpsk.py')
| -rw-r--r-- | gr-digital/python/qpsk.py | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/gr-digital/python/qpsk.py b/gr-digital/python/qpsk.py index 91e8b196f..76e5df270 100644 --- a/gr-digital/python/qpsk.py +++ b/gr-digital/python/qpsk.py @@ -23,7 +23,6 @@ QPSK modulation. Demodulation is not included since the generic_mod_demod -doesn't work for non-differential encodings. """ from gnuradio import gr @@ -33,8 +32,7 @@ import modulation_utils2 # Default number of points in constellation. _def_constellation_points = 4 -# Whether differential coding is used. -_def_differential = False +# Whether gray coding is used. _def_gray_coded = True # ///////////////////////////////////////////////////////////////////////////// @@ -53,7 +51,6 @@ def qpsk_constellation(m=_def_constellation_points): class qpsk_mod(generic_mod): def __init__(self, constellation_points=_def_constellation_points, - differential=_def_differential, gray_coded=_def_gray_coded, *args, **kwargs): @@ -70,9 +67,11 @@ class qpsk_mod(generic_mod): constellation = digital_swig.constellation_qpsk() if constellation_points != 4: raise ValueError("QPSK can only have 4 constellation points.") - if differential or not gray_coded: - raise ValueError("This QPSK mod/demod works only for gray-coded, non-differential.") - super(qpsk_mod, self).__init__(constellation, differential, gray_coded, *args, **kwargs) + if not gray_coded: + raise ValueError("This QPSK mod/demod works only for gray-coded constellations.") + super(qpsk_mod, self).__init__(constellation=constellation, + gray_coded=gray_coded, + *args, **kwargs) # ///////////////////////////////////////////////////////////////////////////// @@ -98,8 +97,8 @@ class qpsk_demod(generic_demod): constellation = digital_swig.constellation_qpsk() if constellation_points != 4: raise ValueError('Number of constellation points must be 4 for QPSK.') - super(qpsk_demod, self).__init__(constellation, *args, **kwargs) - + super(qpsk_demod, self).__init__(constellation=constellation, + *args, **kwargs) # # Add these to the mod/demod registry |