On 25.07.2015 16:38, Richard Bell wrote: > I'm trying to figure out how to convert the channel model noise voltage > value into an SNR value for a simulation I'm making. The user wants to > be able to enter an SNR value and simulate the BER. So I'm looking at > the source code for Channel Model, and two things happen: > > 1) I would conclude that the Noise Voltage value corresponds to the > standard deviation of the noise that will be produced, am I correct?
For a while, it was the standard deviation of a 1-D normal distribution, so for complex data, you'd need to scale it up (because there you have a 2-D normal distribution). Check out the noise_power.grc example for more help. Remember that you usually want Eb/N0, which is clearly defined, whereas SNR is a bit fuzzy and can mean all kinds of things. Cheers, Martin _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
