Dear all, I checked your latest submission of "usrp_spectrum_sense.py" and I don't understand why there is a division of the value of each bin by the sampling rate. Also I don't understand why there is a subtraction of the noise floor from the power db value to calculate an actual db value.
Kindly explain those modifications. I am working with a USRP N210 and when I run uhd_fft to display an analog TV channel I get values around -60's db for the central frequencies of both the audio and video signals. When I used the latest version of "usrp_spectrum_sense.py", I got positive values for power_db and when I removed the deduction of the noise floor, I got readings almost near the noise floor for all bins (including the ones at the central frequency of the audio and video signals). I hope you can point me to the right direction and correct my misunderstanding of the code. Thank you for your time. Kind regards, Ahmed Saeed. -- Ahmed Saeed Research Assistant Department of Computer Science and Engineering Egypt-Japan University of Science and Technology (E-JUST) email: ahmed.sa...@ejust.edu.eg mobile: +201112389430 web: http://wrc.ejust.edu.eg/people/saeed
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