Tom, Is there going to be a fix soon or should I go with the 3.6.5 version of gnuradio?
Thanks, -George On Dec 18, 2013, at 7:01 PM, George <george.sklivani...@gmail.com> wrote: > Hi Tom, > > You are right increasing the number of taps by 100 is not the case, after I > debugged the results a bit more. > The problem seems to be in the number of samples consumed as you mentioned > above. > > The full definition for the filter I am using is > firdes.root_raised_cosine(nfilts, 1.0, 1.0/nfilts, rolloff, > int(11*spb*nfilts)) > where nfilts=32, rolloff=0.35 and spb =4 > > Thanks, > -George > > On Dec 18, 2013, at 5:54 PM, Tom Rondeau <t...@trondeau.com> wrote: > >> On Tue, Dec 17, 2013 at 9:06 PM, George <george.sklivani...@gmail.com> wrote: >>> Hello all, >>> >>> Considering a simple gnuradio flowgraph as the following >>> >>> Random source -> chunks2symbols -> complex2float -> float2complex -> >>> pfb_arb_resampler-> USRP sink >>> >>> which used to work without any problem in the older gnuradio distributions, >>> in the newer 3.7.2.1 seems that the conversion above (from complex to float >>> and float to complex) introduces a problem, that has to do with USRP >>> transmissions. >>> >>> However, when I increased the number of taps used for the root raised >>> cosine filter in pfb_arb_resampler by a factor of 100, everything seems to >>> work properly. >>> >>> Note that if the conversions float2complex and complex2float miss >>> everything works. >>> >>> Any ideas why? >>> >>> Thanks, >>> -George >> >> Bug it the pfb_arb_resampler. I was trying to be too conscientious >> about calls to work but made an assumption in the forecast function >> that's not always correct. I'm testing a few things out, still, but I >> should push this fix soon. >> >> Still, your behavior of the filter length (increasing it by 100, that >> is) doesn't fit with what I'm seeing. What's the full filter >> definition you're using for the block? >> >> Tom > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
