On 28/09/11 04:01 AM, Konstantinos wrote: > Hi, > > I am trying to find out how to set the TX-amplitude parameter between 0-1, > which > is given as an option in USRP sink. My attempts > to find a clear explanation of > this parameter have all failed. > A UHD sink has a "Gain" parameter--is that what you're talking about? That parameter sets the *analog gain* of the particular daughtercard in use. The final output power produced by the transmit side will be a product of the analog gain setting, and the magnitude of the signals coming from the Gnu Radio flow-graph. In UHD, it expects signals that are normalized into {-1.0,+1.0}, and UHD scales that into the range expected by the particular hardware.
> Also, I would like to understand how to > set the receive SNR in the source file? > > As for the receive SNR, my guess would be > to solve the classic equation, which > involves estimating the noise figure, > transmitted power, gains of antennas etc., > however it does not seem to me a very > realistic approach. How do you set this value? > > I would appreciate anyone's hints. > > Not sure what you mean by "set the receive SNR in the source file". The SNR is a property of a received signal. It's not something you "set" in the hardware, although hardware/software settings can certainly *influence* the received SNR. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio