Hi Bomi! Don't know if you still need this but there is a block in GRC called Rational Resampler, try using that combined with the USRP2's decimation (for example Decimation 4 and Rational Resample rate of 8/25 for a 8M band) for trimming your baseband! HTH.
Vlad. Bomi wrote: > > > > Hello :) > > I am trying to implement the relay system with USRP2 & RFX 2400. > > > > I am using GRC+UHD. > > (GNUradio 3.3.0 , UHD_003.20110310224233.4c7cc6b) > > > > When UHD is used in some cases, the comments come up as below. > > (1) Target recv sock buff size: 50000000 bytes > Actual recv sock buff size: 131071 bytes > > > (2) Target sample rate: 8.000000 MSps > Actual sample rate: 8.333333 MSps > > (2) may be caused because interpolation or decimation rate must be > integer. > > So if the sample rate that I intended is 8.000000 MSps at TX, the > interpolation rate(100M/8M=12.5) is not integer. Thus the actual sample > rate is different from the target sample rate. Is my guess right? > > > > But I don’t know well about (1). > > > > What does that mean? > > Where is “the recv sock buff”? > > > > Finally, I am curious about the UART of USRP2. > > How does the UART operate in USRP2? > > > > Thank you for your valuable time. > > > > Regards, Bomi > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/Some-questions-about-using-UHD-tp31555992p31610402.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio