On 06/03/2010 11:54 PM, Juan Quiroz wrote:
Hi all
I had a problem with tunnel.py, but changing threshold from 30dB to 50dB it was
solved, now I'm reading receive_path.py in carrier sensing blocks are defined
alpha=0.001 and thres=30 for use with gr.probe_avg_mag_sqrd_cf, please can
somebody tell me what is alpha value and why is set to 0.001?
Alpha is the pole placement in the single pole IIR filter, used to
filter the signal before it is compared with the threshold. Details may
be found in
gnuradio/gnuradio-core/src/lib/filter/gr_single_pole_iir_filter_xx.cc
Mattias
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