Unless I'm mistaken the B210 can do 8 bit sample depth, giving you 1 Gbps data rate at 62.5 MS/s. This might help.
On Thu, Apr 26, 2018 at 6:11 AM, Derek Kozel <derek.ko...@ettus.com> wrote: > Hello Mehtap, > > There will have some filter roll off as well, so the rule of thumb is to > have a margin in your sample rates. A safe margin is that your bandwidth of > interest be no more than 80% of the theoretical bandwidth of your sample > rate, so your recommended rate would be 62.5 MS/s. Helpfully 61.44 MS/s is > a common rate due to it being a telecom rate. That's only 1.7% off your > target, not a problem. One of the USB3 based SDRs would work in that case, > at least as far as sample rate goes. > > Regards, > Derek > > > On Thu, Apr 26, 2018 at 10:47 AM, Jeff Long <willco...@gmail.com> wrote: > >> Correct, you need at least 50 MS/s complex (I+Q) which is 100 MS/s or 400 >> MB/s from an I/O point of view. GNU Radio blocks can be used for real time >> decoding. Depending on what kind of "decoding" you want to do, the >> processor may not be able to keep up. >> >> >> On 04/26/2018 04:05 AM, mehtap özkan wrote: >> >>> Dear All, >>> Mine is more of a fundamental question. >>> I have a 50 MHz (3 db bandwidth) wide QPSK signal. >>> I am aware that Gnuradio blocks can not be used for real time decoding. >>> In order to record the signal and demodulate it correctly, what should >>> the minimum sampling rate be? >>> If the minimum sampling rate is 100 MSPS, then I am pretty much stuck >>> with USRP x310 as the only selection available.(or maybe LIMESDR-PCIe) >>> I am also not sure if the source block streams 100 MSPS sampled signal >>> or I+Q (50 MHz-I, 50 MHz-Q). >>> Thank you in advance. >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- Martin K.
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