Channel Model gr_channel_model from gnuradio import gr from gnuradio.gr import firdes gr.channel_model( noise_voltage=$noise_voltage, frequency_offset=$freq_offset, epsilon=$epsilon, taps=$taps, noise_seed=$seed, ) set_noise_voltage($noise_voltage) set_frequency_offset($freq_offset) set_taps($taps) set_timing_offset($epsilon) Noise Voltage noise_voltage 0.0 real Frequency Offset freq_offset 0.0 real Epsilon epsilon 1.0 real Taps taps 1.0 + 1.0j complex_vector Seed seed 42 int in complex out complex