Hi Yan, have your questions regarding this be answered? I know there's been a lot of discussion lately on how to implement such systems, but I don't know whether you chose one of these approaches.
Best regards, Marcus On 16.02.2016 20:01, Yan Huang wrote: > > Hi all, > > > > I want to ask some questions about gnuradio: > > > > 1.I want to use UHD: USRP Source to receive signal with 60MHz > bandwidth, and I divide it into 30 channels, and each time the usrp > source receive 2MHz bandwidth signal, and then improve the center > frequency with step=1.5MHz. I know I need to set the USRP center > frequency as: > > uhd.tune_request(center_freq, rf_freq=(center_freq + > lo_offset),rf_freq_policy=uhd.tune_request.POLICY_MANUAL) > > But I don’t know how to change the center frequency from the > min_frequency to max_frequency with each step. > > > > 2.And then I connect the USRP source ->steam to vector->FFT->vector to > stream->file sink, if FFT length is 256, sample rate is 2MHz, the > sample number in the file sink is also 256(if I use overwite)? If not, > how many number is in the file sink? > > > > Is anybody familiar with these? Thanks in advance. > > > > Best Regards, > > > > Yan > > > > > This message and any attachment are intended solely for the addressee > and may contain confidential information. If you have received this > message in error, please send it back to me, and immediately delete it. > > Please do not use, copy or disclose the information contained in this > message or in any attachment. Any views or opinions expressed by the > author of this email do not necessarily reflect the views of the > University of Nottingham. > > This message has been checked for viruses but the contents of an > attachment may still contain software viruses which could damage your > computer system, you are advised to perform your own checks. Email > communications with the University of Nottingham may be monitored as > permitted by UK legislation. > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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