-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Ah, the picture of your flowgraph took some time to load, so I thought it was broken. First of all: to get truly comparable numbers, you should set the IIR alpha to the same value for the probe and the RMS blocks.
Then: What you're doing with the RMS blocks is something different than what the MPSK SNR estimators do; please refer to http://gnuradio.org/doc/doxygen/classgr_1_1digital_1_1mpsk__snr__est.html and the papers linked on the respective implementations for detail. Greetings, Marcus On 26.03.2014 16:16, Marcus Müller wrote: > Hi Azza, > > how do you know RMS(noise)? > > Greetings, Marcus > > On 26.03.2014 16:14, Azza Ben Mosbah wrote: >> I calculate the SNR using the formula >> SNR=20*log10[RMS(signal)/RMS(noise)]. You find attached my flow >> graph. >> <http://gnuradio.4.n7.nabble.com/file/n47229/flowgraph.png> > > >> Azza > > > >> -- View this message in context: >> http://gnuradio.4.n7.nabble.com/How-to-calculate-SNR-tp47193p47229.html > >> > > Sent from the GnuRadio mailing list archive at Nabble.com. > >> _______________________________________________ Discuss-gnuradio >> mailing list [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > _______________________________________________ Discuss-gnuradio > mailing list [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTMvK8AAoJEBQ6EdjyzlHtUHwH/RUSeDJXGXWYQtcmPAEGz+XK FNy79zpqogkhYWZ9EPylVPZL0qS9jDWAcymOxw/FCz280zqOM8AA+CSIGLDWrQEI 667IcrV44/fL4fMgiiIC2p87iUPqpqIfoI6TU67qXjEkq4vsXxlosbG0NoH61DnK D6dxWVv3yT4zp387BZ4CfT3XS9jvXVqO4XlPt0INstAC83v/j1xiU2392fwQJZsn pHGUFY/SSDsYRWO8a+Mf+IxvtyEPB1EDXC3ckELs/OGxWTin+uuYx1aPCq+RmTo3 N5v2BTaH8YVP0v6CGUzax+tTTbzAHUEZkFXXPauriv9qELsoW+/pYZLtkT2JC5I= =eoyN -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
