def test_incoherent_loopback(self):
self._loopback_test(
modulators.psk31_modulator_bc(),
demodulators.psk31_incoherent_demodulator_cc(),
demodulators.psk31_constellation_decoder_cb(
varicode_decode=True,
differential_decode=False,
),
)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_float))
channel_filter = self.__make_channel_filter()
self.__text = u''
self.__char_queue = gr.msg_queue(limit=100)
self.__char_sink = blocks.message_sink(gr.sizeof_char, self.__char_queue, True)
# The output of the channel filter is oversampled so we don't need to
# interpolate for the audio monitor. So we'll downsample before going into
# the demodulator.
samp_per_sym = 8
downsample = self.__demod_rate / samp_per_sym / self.__symbol_rate
assert downsample % 1 == 0
downsample = int(downsample)
self.connect(
self,
channel_filter,
blocks.keep_one_in_n(gr.sizeof_gr_complex, downsample),
psk31_coherent_demodulator_cc(samp_per_sym=samp_per_sym),
psk31_constellation_decoder_cb(
varicode_decode=True,
differential_decode=True),
self.__char_sink)
self.connect(
channel_filter,
blocks.rotator_cc(rotator_inc(self.__demod_rate, self.__audio_frequency)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_float))
channel_filter = self.__make_channel_filter()
self.__char_queue = gr.msg_queue(limit=100)
self.__char_sink = blocks.message_sink(gr.sizeof_char, self.__char_queue, True)
# The output of the channel filter is oversampled so we don't need to
# interpolate for the audio monitor. So we'll downsample before going into
# the demodulator.
samp_per_sym = 8
downsample = self.__demod_rate / samp_per_sym / self.__symbol_rate
assert downsample % 1 == 0
downsample = int(downsample)
self.connect(
self,
channel_filter,
blocks.keep_one_in_n(gr.sizeof_gr_complex, downsample),
psk31_coherent_demodulator_cc(samp_per_sym=samp_per_sym),
psk31_constellation_decoder_cb(
varicode_decode=True,
differential_decode=True),
self.__char_sink)
self.connect(
channel_filter,
blocks.rotator_cc(rotator_inc(self.__demod_rate, self.__audio_frequency)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)