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Re: [Discuss-gnuradio] [Openlte-discuss] Error while building openLTE co


From: Ben Wojtowicz
Subject: Re: [Discuss-gnuradio] [Openlte-discuss] Error while building openLTE code on USRP
Date: Tue, 1 Oct 2013 07:47:10 -0500

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 <address@hidden> 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=address@hidden [mailto:discuss-gnuradio-bounces+dbeken=address@hidden] Im Auftrag von Dincer Beken
Gesendet: Montag, 30. September 2013 13:42
An: address@hidden
Cc: address@hidden
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: address@hidden
tel.: +49 833199596-26


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