On 08/05/2014 10:07 PM, Matias wrote: > We tried to get rid of the aliasing by using a band-pass filter with the > following parameters: > > -Sample Rate: 16MHz > -Low Cutoff Freq: 856MHz > -High Cutoff Freq: 864MHz > -Transition Bandwidth: 1MHz
Hey Matias, did you put these settings in a GRC-generated filter? I'm asking because you're using pass-band frequency values, not baseband frequency values. > But we obtained this error: "IndexError: gr_firdes check failed: 0 < fa <= > sampling_freq / 2". We later found that lowering the low cutoff frequency > to 1MHz and the high cutoff frequency to 8MHz (<= sampling_freq / 2), the > program checks pass but the GUI scope will not show any output. Are we using > this correctly? Is there perhaps a better way to get rid of the aliasing? ...this would also confirm my suspicion. M > > Thanks, > Matias Ponce > CellAntenna Engineer > CellAntenna Corporation > > 12453 NW 44th Street > Coral Springs, FL 33065 > > Office: 954-340-7053 ext 10251 > E-mail: [email protected] > Web: http://www.cellantenna.com > > > > -- > View this message in context: > http://gnuradio.4.n7.nabble.com/Regarding-Filtering-Aliasing-in-USRP-B210-tp49771.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
