Brian Padalino wrote: > On 11/9/07, Meenaktchi Venkatachalam <[EMAIL PROTECTED]> wrote: >> Hi, >> >> I was wondering how to calculate SNR. Is there function already a >> function that I can use to find SNR? > > If you know where your constellation symbols are, and you know where > the IQ symbol really ended up after equalization - calculating the > amount of noise should be straight forward. > > I don't know if there is a block which takes in a constellation > mapping along with a stream of IQ datapoints and calculates SNR. > > Brian
You can compute mse between received points and hard decisions, but this will be a biased estimate at low s/n. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
