Hi Ly, you might consider as an alternative solution shifting the frequency by multiplying with a sine wave if your application can sample at high rate.
----- "Nguyễn Văn Lý" <lynguyenvan....@gmail.com> wrote: > Hi Marcus, > > I use bladeRF hardware, not USRP. So I have "osmocom" sink and source > blocks in my flow graph. Do you have any idea about this. > > Thank you very much, > > > Best Regards, > Van-Ly > > > > > > > > > > > > > Van-Ly Nguyen, > Research Assistant, > Signals and Systems Laboratory - SSL > Faculty of Electronics and Telecommunications - FET > > University of Engineering and Technology - UET > > Vietnam National University, Hanoi - VNU > > > Tel: (+84) 97 881 9406 > > > > On Wed, Dec 3, 2014 at 10:28 PM, Marcus Müller < > marcus.muel...@ettus.com > wrote: > > > > Hello Van-Ly, > > what hardware are you using? > If you're using any USRP, then the gr-uhd [1] blocks [2] will allow > you to tune using stream tags, asynchronous messages and method calls. > From your problem description, it sounds like using stream tags is > your best choice. If you want to know more about how to use these, I > recommend going through the new guided tutorials [3], especially part > 5 (which kind of relies on you having read the first four parts, but > since I think you're already somewhat friends with GNU Radio, this > might not be too much work). > > Greetings, > Marcus > > > [1] http://gnuradio.org/doc/doxygen/page_uhd.html > [2] sink: > http://gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__sink.html > [3] > http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials > > > > On 12/03/2014 04:21 PM, Nguyễn Văn Lý wrote: > > > > > Hello everyone, > > Does anyone know how to change Tx frequency during transmission. I > mean the > transmitter operates at f0 GHz in some interval of time and then > change to > operate at f1 GHz. > > Sincerely, > Van-Ly > > Van-Ly Nguyen, > Research Assistant, > Signals and Systems Laboratory - SSL > Faculty of Electronics and Telecommunications - FET > University of Engineering and Technology - UET > Vietnam National University, Hanoi - VNU > > Tel: (+84) 97 881 9406 > > _______________________________________________ > 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 _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
