Tuesday, January 25, 2011

GNU Radio energy detector plots

Today I tested transmitting a D8PSK signal from my laptop to my desktop running the energy detector, as it is.

D8PSK


A D8PSK signal generated by benchmark_tx.py was tested first.

First, the noise + signal/noise plot:


The plot of probability of false alarm (Pfa) and probability of detection vs. threshold value:


Finally the ROC curve.


Now that the basics are in place we can look into gathering more meaningful results.

Complex Sinusoid - Lower power

A complex sinusoid signal was generated using usrp_siggen_gui.py with the following parameters:

Amplitude: 660u
TX gain: 6 dB




Complex Sinusoid - Higher power


Amplitude: 94M
TX gain: 7dB



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1 comment:

  1. UnknownApril 6, 2013 at 10:42 AM

    Can you share the code for Pfa and Pd and How did you calculate the ROC curve ? One more question... Have you done this offline or in real time ? I ask this because the graphs are plotted using pylab.

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