Exponential Channel Model#
- class MultipathFadingExponential(tap_interval, rms_delay, alpha_device=None, beta_device=None, gain=1.0, **kwargs)[source]#
Bases:
MultipathFadingChannel
Exponential Multipath Fading Channel models.
The following minimal example outlines how to configure the channel model within the context of a Simulation:
1# Initialize two devices to be linked by a channel 2simulation = Simulation() 3alpha_device = simulation.new_device(carrier_frequency=1e8) 4beta_device = simulation.new_device(carrier_frequency=1e8) 5 6# Create a channel between the two devices 7channel = MultipathFadingExponential(1e-8, 1e-7) 8simulation.set_channel(alpha_device, beta_device, channel) 9 10# Configure communication link between the two devices 11link = SimplexLink(alpha_device, beta_device) 12 13# Specify the waveform and postprocessing to be used by the link 14link.waveform = RRCWaveform( 15 symbol_rate=1e8, oversampling_factor=2, num_data_symbols=1000, 16 num_preamble_symbols=10, pilot_rate=10) 17link.waveform.channel_estimation = SCLeastSquaresChannelEstimation() 18link.waveform.channel_equalization = SCZeroForcingChannelEqualization() 19 20# Configure a simulation to evaluate the link's BER and sweep over the receive SNR 21simulation.add_evaluator(BitErrorEvaluator(link, link)) 22simulation.new_dimension('snr', dB(0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20)) 23 24# Run simulation and plot resulting SNR curve 25result = simulation.run() 26result.plot()
- Parameters:
tap_interval (float) – Tap interval in seconds.
rms_delay (float) – Root-Mean-Squared delay in seconds.
alpha_device (SimulatedDevice, optional) – First device linked by the
MultipathFadingExponential
instance that generated this realization.beta_device (SimulatedDevice, optional) – Second device linked by the
MultipathFadingExponential
instance that generated this realization.gain (float, optional) – Linear power gain factor a signal experiences when being propagated over this realization. \(1.0\) by default.
kwargs (Any) – MultipathFadingChannel initialization parameters.
- Raises:
ValueError – On invalid arguments.