Hi all. I'm trying to understand how Rx gain, the paremeter that is set in the USRP Source block, affects the input signal. I would like to have an equation for that.
I'm doing the next experiment: - I take the input signal from the USRP Source block to a MAG^2 block. - From MAG^2 block to a moving average with a window of 50K. - My sample rate is 10M that means that my moving average is calculated over 5ms. - I'm sending a signal from a transmitter each 5ms. - Finally I capture the value of the moving average, which is always around an average value. Now, I change Rx gain and it is what i get: [image: Imágenes integradas 1] The value of the output of the moving average is changing very strange. I was trying to write an equation for that, but i wasn't able, i used Rx gain in dB, in dBm as a constant, but i wasn't able to build a relation. In an equation i'm doing as follow: [image: Imágenes integradas 2] Then I think that if I include Gtx, my equation results in: [image: Imágenes integradas 3] But that doesn't make sense with the data that I get. I would really greatful if someone can explain where is my mistake. Thanks in advance. Best regards, Cristian
_______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
