def test_plot(self):
modulator = Modulator("gfsk")
modulator.modulation_type_str = "GFSK"
modulator.samples_per_bit = 100
modulator.sample_rate = 1e6
modulator.param_for_one = 20e3
modulator.param_for_zero = 10e3
modulator.carrier_freq_hz = 15e3
modulator.carrier_phase_deg = 90
modulator.modulate([True, False, True, False, False], 77)
data = copy.deepcopy(modulator.modulated_samples)
modulator.modulate([False, True, True, True, True, False, True],
100,
start=len(data))
data = np.concatenate((data, modulator.modulated_samples))
plt.subplot(2, 1, 1)
axes = plt.gca()
axes.set_ylim([-2, 2])
plt.plot(data.real)
plt.title("Modulated Wave")
plt.subplot(2, 1, 2)
qad = signalFunctions.afp_demod(np.ascontiguousarray(data), 0, 1)
plt.plot(qad)
plt.title("Quad Demod")
plt.show()
def build_modulator_from_args(arguments: argparse.Namespace):
if arguments.raw:
return None
if arguments.parameter_zero is None:
raise ValueError("You need to give a modulation parameter for zero (-p0, --parameter-zero)")
if arguments.parameter_one is None:
raise ValueError("You need to give a modulation parameter for one (-p1, --parameter-one)")
result = Modulator("CLI Modulator")
result.carrier_freq_hz = float(arguments.carrier_frequency)
result.carrier_amplitude = float(arguments.carrier_amplitude)
result.carrier_phase_deg = float(arguments.carrier_phase)
result.samples_per_bit = int(arguments.bit_length)
if arguments.modulation_type == "ASK":
if arguments.parameter_zero.endswith("%"):
param_zero = float(arguments.parameter_zero[:-1])
else:
param_zero = float(arguments.parameter_zero) * 100
if arguments.parameter_one.endswith("%"):
param_one = float(arguments.parameter_one[:-1])
else:
param_one = float(arguments.parameter_one) * 100
else:
param_zero = float(arguments.parameter_zero)
param_one = float(arguments.parameter_one)
result.param_for_zero = param_zero
result.param_for_one = param_one
result.modulation_type_str = arguments.modulation_type
result.sample_rate = arguments.sample_rate
return result
def build_modulator_from_args(arguments: argparse.Namespace):
if arguments.raw:
return None
if arguments.bits_per_symbol is None:
arguments.bits_per_symbol = 1
n = 2 ** int(arguments.bits_per_symbol)
if arguments.parameters is None or len(arguments.parameters) != n:
raise ValueError("You need to give {} parameters for {} bits per symbol".format(n, int(arguments.bits_per_symbol)))
result = Modulator("CLI Modulator")
result.carrier_freq_hz = float(arguments.carrier_frequency)
result.carrier_amplitude = float(arguments.carrier_amplitude)
result.carrier_phase_deg = float(arguments.carrier_phase)
result.samples_per_symbol = int(arguments.samples_per_symbol)
result.bits_per_symbol = int(arguments.bits_per_symbol)
result.modulation_type = arguments.modulation_type
result.sample_rate = arguments.sample_rate
for i, param in enumerate(arguments.parameters):
if result.is_amplitude_based and param.endswith("%"):
result.parameters[i] = float(param[:-1])
elif result.is_amplitude_based and not param.endswith("%"):
result.parameters[i] = float(param) * 100
else:
result.parameters[i] = float(param)
return result
def test_plot(self):
modulator = Modulator("gfsk")
modulator.modulation_type_str = "GFSK"
modulator.samples_per_bit = 100
modulator.sample_rate = 1e6
modulator.param_for_one = 20e3
modulator.param_for_zero = 10e3
modulator.carrier_freq_hz = 15e3
modulator.carrier_phase_deg = 90
modulated_samples = modulator.modulate([True, False, True, False, False], 77)
data = copy.deepcopy(modulated_samples)
modulated_samples = modulator.modulate([False, True, True, True, True, False, True], 100, start=len(data))
data = np.concatenate((data, modulated_samples))
plt.subplot(2, 1, 1)
axes = plt.gca()
axes.set_ylim([-2,2])
plt.plot(data.real)
plt.title("Modulated Wave")
plt.subplot(2, 1, 2)
qad = signal_functions.afp_demod(np.ascontiguousarray(data), 0, 1)
plt.plot(qad)
plt.title("Quad Demod")
plt.show()
def build_modulator_from_args(arguments: argparse.Namespace):
if arguments.raw:
return None
if arguments.parameter_zero is None:
raise ValueError("You need to give a modulation parameter for zero (-p0, --parameter-zero)")
if arguments.parameter_one is None:
raise ValueError("You need to give a modulation parameter for one (-p1, --parameter-one)")
result = Modulator("CLI Modulator")
result.carrier_freq_hz = float(arguments.carrier_frequency)
result.carrier_amplitude = float(arguments.carrier_amplitude)
result.carrier_phase_deg = float(arguments.carrier_phase)
result.samples_per_bit = int(arguments.bit_length)
if arguments.modulation_type == "ASK":
if arguments.parameter_zero.endswith("%"):
param_zero = float(arguments.parameter_zero[:-1])
else:
param_zero = float(arguments.parameter_zero) * 100
if arguments.parameter_one.endswith("%"):
param_one = float(arguments.parameter_one[:-1])
else:
param_one = float(arguments.parameter_one) * 100
else:
param_zero = float(arguments.parameter_zero)
param_one = float(arguments.parameter_one)
result.param_for_zero = param_zero
result.param_for_one = param_one
result.modulation_type_str = arguments.modulation_type
result.sample_rate = arguments.sample_rate
return result
def read_modulators_from_file(self, filename: str):
if not filename:
return []
tree = ET.parse(filename)
root = tree.getroot()
result = []
for mod_tag in root.iter("modulator"):
mod = Modulator(mod_tag.attrib["name"])
mod.carrier_freq_hz = float(mod_tag.attrib["carrier_freq_hz"])
mod.carrier_amplitude = float(mod_tag.attrib["carrier_amplitude"])
mod.carrier_phase_deg = float(mod_tag.attrib["carrier_phase_deg"])
mod.modulation_type = int(mod_tag.attrib["modulation_type"])
mod.sample_rate = float(mod_tag.attrib["sample_rate"])
mod.param_for_one = float(mod_tag.attrib["param_for_one"])
mod.param_for_zero = float(mod_tag.attrib["param_for_zero"])
result.append(mod)
return result
