Dincer, I believe that you will need to add a resampler to the openLTE code in order to run on a USRP. I don't have a USRP myself, but I believe that they only allow sample rates that are integer divisions of 100Msps (except the USRP B200 series). In order to get a valid LTE sample rate (30.72, 15.36, 7.68, 3.84, or 1.92Msps), you will need to add a resampling block.
As you mentioned, I am using the gr-osmosdr blocks to interface currently to rtl-sdr and hackRF. There is support in gr-osmosdr for USRP, but it will need to be handled in the flowgraph. Hope this helps, Ben On Mon, Sep 30, 2013 at 7:21 AM, Dincer Beken <dbe...@blackned.de> wrote: > Sorry but I think I mailed to early.**** > > ** ** > > On a normal gnuradio distribution from the build-gnuradio.py -m” code on > Fedora, I did not experience the problems while build and install. **** > > I am checking out the code right now..**** > > ** ** > > Regarding OSMO and RTL-SDR, I did understand it like the libraries can > detect and work with USRP, so that’s probably clear, too.**** > > When using those libraries with USRP, are there any specific changes that > I should make for some blocks etc.?**** > > ** ** > > Regards,**** > > Dincer**** > > **** > > ** ** > > *Von:* discuss-gnuradio-bounces+dbeken=blackned...@gnu.org [mailto: > discuss-gnuradio-bounces+dbeken=blackned...@gnu.org] *Im Auftrag von *Dincer > Beken > *Gesendet:* Montag, 30. September 2013 13:42 > *An:* openlte-disc...@lists.sourceforge.net > *Cc:* Discuss-gnuradio@gnu.org > *Betreff:* [Discuss-gnuradio] Error while building openLTE code on USRP*** > * > > ** ** > > Hi all, **** > > ** ** > > I am new to Gnuradio and USRP. I want to try the openLTE Project on my > USRP N210.**** > > ** ** > > During the cmake process I am getting the following errors:**** > > ** ** > > CMake Warning at CMakeLists.txt:92 (find_package): Could not find a > configuration file for package "Gnuradio" that is compatible with requested > version "3.7.0".**** > > The following configuration files were considered but not accepted:**** > > /usr/local/lib/cmake/gnuradio/GnuradioConfig.cmake, version: 3.8.git.0**** > > ** ** > > ** ** > > Also since I am not using one of the following devices:**** > > I also get :**** > > ** ** > > -- checking for module 'gnuradio-osmosdr' -- package 'gnuradio-osmosdr' > not found -- Could NOT find GNURADIO_OSMOSDR (missing: > GNURADIO_OSMOSDR_LIBRARIES GNURADIO_OSMOSDR_INCLUDE_DIRS) -- checking for > module 'librtlsdr' -- package 'librtlsdr' not found -- Could NOT find > RTLSDR (missing: RTLSDR_LIBRARIES RTLSDR_INCLUDE_DIRS) -- checking for > module 'libhackrf' -- package 'libhackrf' not found -- Could NOT find > HACKRF (missing: HACKRF_LIBRARIES HACKRF_INCLUDE_DIRS) -- checking for > module 'fftw3f >= 3.0' -- found fftw3f , version 3.3 -- Found FFTW3F: > /usr/lib/libfftw3f.so CMake Error at CMakeLists.txt:99 (message): GNURadio > required to compile openLTE**** > > ** ** > > ** ** > > ** ** > > After that, I changed in the cmake file the required Gnuradio Version > manually to 3.8. Now I am getting only the OSMO / RTL errors:**** > > ** ** > > **· **-- checking for module 'gnuradio-osmosdr' -- package > 'gnuradio-osmosdr' not found -- Could NOT find GNURADIO_OSMOSDR (missing: > GNURADIO_OSMOSDR_LIBRARIES GNURADIO_OSMOSDR_INCLUDE_DIRS) -- checking for > module 'librtlsdr' -- package 'librtlsdr' not found -- Could NOT find > RTLSDR (missing: RTLSDR_LIBRARIES RTLSDR_INCLUDE_DIRS) -- checking for > module 'libhackrf' -- package 'libhackrf' not found -- Could NOT find > HACKRF (missing: HACKRF_LIBRARIES HACKRF_INCLUDE_DIRS) CMake Error at > CMakeLists.txt:103 (message): GNURadio Osmosdr required to compile openLTE ( > http://sdr.osmocom.org/trac/wiki/GrOsmoSDR)**** > > ** ** > > ** ** > > From the discuss Forum of gnuradio, I read that it is possible to run it > with USRP (USRP2) **** > > ** ** > > https://www.ruby-forum.com/topic/4169390#new**** > > ** ** > > ** ** > > How can I ignore those libraries or replace them?**** > > And can I use this code on the USRP?**** > > ** ** > > Regards,**** > > Dincer**** > > ** ** > > ** ** > > Mit freundlichen Grüßen,**** > > Dincer Beken**** > > ** ** > > e-mail: dbe...@blackned.de > tel.: +49 833199596-26**** > > > [image: cid:image001.png@01CD3E54.B249FA20]**** > > * > blackned gmbh* · www.blackned.de > zentrale: dorfstrasse 3 · 88416 erlenmoos > niederlassung: am hartholz 21 · 82239 alling**** > > **** > > geschäftsführer: timo haas · josef stadler · hrb ulm 724147**** > > **** > > **** > > Der Inhalt dieser E-Mail ist ausschließlich für den bezeichneten > Adressaten bestimmt.**** > > Wenn Sie nicht der vorgesehene Adressat dieser E-Mail oder dessen > Vertreter sein sollten,**** > > bitten wir Sie, sich in diesem Falle umgehend mit dem Absender der E-Mail > in Verbindung**** > > zu setzen und diese Daten von Ihrem Computer zu löschen. 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