Re: [Discuss-gnuradio] How to integrate a specific number of vectors element-wise in gnuradio?

2013-10-08 Thread Eskil Varenius
Hi again, I uninstalled what I had installed through PyBOMBS and installed Gnuradio 3.7 through the build_gnuradio script. Then I tried Jareds repo for specest with 3.7 (http://www.github.com/dfxx) and it seems to compile just fine, well done! I can also import specest in python without problems.

[Discuss-gnuradio] Again bladerf / gqrx / gr-osmosdr

2013-10-08 Thread Ralph A. Schmid, dk5ras
Hi, With latest versions of GR / bladerf / gqrx / gr-osmosdr again something is stuck. Gqrx does not work anymore, I get the following error during make: /usr/local/lib/libgnuradio-osmosdr.so: undefined reference to `bladerf_fpga_version' /usr/local/lib/libgnuradio-osmosdr.so: undefined

Re: [Discuss-gnuradio] Again bladerf / gqrx / gr-osmosdr

2013-10-08 Thread Alexandru Csete
On Tue, Oct 8, 2013 at 1:11 PM, Ralph A. Schmid, dk5ras ra...@schmid.xxx wrote: Hi, With latest versions of GR / bladerf / gqrx / gr-osmosdr again something is stuck. Gqrx does not work anymore, I get the following error during make: /usr/local/lib/libgnuradio-osmosdr.so: undefined

Re: [Discuss-gnuradio] Again bladerf / gqrx / gr-osmosdr

2013-10-08 Thread Ralph A. Schmid, dk5ras
Hi, I think it is because you don't use the latest bladerf library - or if you do, you probably still have an older version left. Well, at least I made a git pull, make, sudo make install for bladerf. By the way, you should get this error while building gr-osmosdr and not while building

[Discuss-gnuradio] around empty subcarrier in 802.11n implementation

2013-10-08 Thread xe...@libero.it
Hi list, I'm using gnuradio 3.6.0 together with USRPs N210 for implementing OFDM 802.11 n communications, just SISO for the moment (in the future it would be MIMO). I have properly modified parameters such as FFT size, number of occupied tones and so on. I have also included all preambles (STF,

[Discuss-gnuradio] Reconfigure FIR coefficients without stopping the sampling process

2013-10-08 Thread rmsrms1987
Hello Everyone, I have a quick question regarding the reconfiguration of blocks within a gnuradio top block application. I am working on a radar system that will occasionally attempt to switch transmission waveforms due to results of processed data. Consequently, the back end processing will

Re: [Discuss-gnuradio] Reconfigure FIR coefficients without stopping the sampling process

2013-10-08 Thread Marcus Leech
The filters all have "set_taps()" methods that allow you to set the taps dynamically. on Oct 08, 2013, rmsrms1987 rmsrms1...@gmail.com wrote: Hello Everyone, I have a quick question regarding the reconfiguration of blocks within agnuradio "top block" application. I am working on a radar system

Re: [Discuss-gnuradio] around empty subcarrier in 802.11n implementation

2013-10-08 Thread Tom Rondeau
On Tue, Oct 8, 2013 at 9:52 AM, xe...@libero.it xe...@libero.it wrote: Hi list, I'm using gnuradio 3.6.0 together with USRPs N210 for implementing OFDM 802.11 n communications, just SISO for the moment (in the future it would be MIMO). I have properly modified parameters such as FFT size,

Re: [Discuss-gnuradio] How to integrate a specific number of vectors element-wise in gnuradio?

2013-10-08 Thread Jared Clements
I've been poking around in other GRC files to find examples. The ones in specest are a little tough around the edges, but I've found the ones in GNURadio/gr-fft and other sub blocks of GNURadio to be decent examples. Rgrep has been helpful... Jared On Oct 8, 2013 1:26 AM, Eskil Varenius

[Discuss-gnuradio] AM transmitter

2013-10-08 Thread Bijendra Singh
Hi, I'm new user of GNU. Can someone please help me in creating a flowgraph of AM transmitter. I have to use it for communication of radio having a range 3-30 MHz. Receiver part is already done. I just wanted a waveform of transmitter part only. I have to integrate this waveform with FM receiver.

[Discuss-gnuradio] Avoiding jargon how might GNUradio, software defined radio be explained to AM-FM radio listeners unfamiliar with technology generally?

2013-10-08 Thread don warner saklad
Avoiding jargon how might GNUradio, software defined radio be explained to AM-FM radio listeners unfamiliar with technology generally? Already checked relatively more technical material at http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ http://en.wikipedia.org/wiki/Gnuradio

[Discuss-gnuradio] energy detection based spectrum sensing

2013-10-08 Thread Maheshkumar Pandit
Hello every one... can any buddy say , is it possible to make simulation of enegergy detection based spectrum sensing without USRP or Fun-cube dongle .??? if , yes . How? guide me. as per my opinion .. it may be possible by redefine block which give frequency

Re: [Discuss-gnuradio] Avoiding jargon how might GNUradio, software defined radio be explained to AM-FM radio listeners unfamiliar with technology generally?

2013-10-08 Thread Marcus Leech
I've described it like this: Traditionally radios have been purpose-built for specific types of tasks using electronic components to perform those tasks. Many of the crucial "systems" in a radio are actually performing mathematical "transformations" on the signals going through them. Sometimes

Re: [Discuss-gnuradio] AM transmitter

2013-10-08 Thread Manu T S
First of all, I'm sorry that I could not understand clearly what you want. Are you using any hardware or you are just running a simulation using *GNU Radio*? What do you mean by waveform of transmitter? How do you integrate AM transmitter with FM receiver? If you have USRP and want DSBSC AM, it

Re: [Discuss-gnuradio] Again bladerf / gqrx / gr-osmosdr

2013-10-08 Thread Ralph A. Schmid, dk5ras
I did make uninstall and make clean in bladerf, gr-osmosdr and gqrx, then rebuild it all, still this error: /usr/local/lib/libgnuradio-osmosdr.so: undefined reference to `bladerf_fpga_version' /usr/local/lib/libgnuradio-osmosdr.so: undefined reference to `bladerf_fw_version' collect2: ld returned

Re: [Discuss-gnuradio] gr_firdes.cc/firdes.cc - window functions - flawe

2013-10-08 Thread bob wole
Hi Tom and Chris, Thanks for your detailed guidance on this. I'll try this out. Bob On Mon, Oct 7, 2013 at 9:49 PM, KB3CS - Chris kb...@arrl.net wrote: $ git diff v3.6.3 HEAD gr-filter/lib/firdes.cc (but modified since you remain @ v3.6.3) diff --git a/gr-filter/lib/firdes.cc

[Discuss-gnuradio] GNU Radio training class opening

2013-10-08 Thread Johnathan Corgan
One of our private GNU Radio training classes in San Antonio, TX, has had a couple slots open up, and our customer is willing to allow 3rd parties to attend. It's happening Oct. 21-25. The first three days is the Intro class that comes with a USRP, and the last two days is the Advanced add-on

[Discuss-gnuradio] PFB Arbitrary Resampler

2013-10-08 Thread Nowlan, Sean
In the benchmark_tx.py code for MPSK modulation, the pfb_arbitrary_resampler block is instantiated with 32 * 11 * floor(samples_per_symbol) taps. I understand that 32 is the number of filters in the filterbank, but I'm not sure what motivates the factor of 11. Has anybody been able to fine tune

Re: [Discuss-gnuradio] PFB Arbitrary Resampler

2013-10-08 Thread Tom Rondeau
On Tue, Oct 8, 2013 at 6:54 PM, Nowlan, Sean sean.now...@gtri.gatech.edu wrote: In the benchmark_tx.py code for MPSK modulation, the pfb_arbitrary_resampler block is instantiated with 32 * 11 * floor(samples_per_symbol) taps. I understand that 32 is the number of filters in the filterbank, but

[Discuss-gnuradio] Bug in freq_xlating_fir_filter_XXX

2013-10-08 Thread Achilleas Anastasopoulos
I was playing around with fir_filter_XXX and freq_xlating_fir_filter_XXX and noticed that the two do not give the same output for the same input (and center_freq=0 in the xlating filter). Looking at the implementation of the latter it is obvious why: the taps are reversed in the line: