I've used both the Fractional Resampler and the Rational Resampler so far
with reasonable results. At this stage in the case of the Rational
Resampler, I simply use the Interpolation setting and decimation setting to
form a ratio (taps:None, Fractional BW:0), which then generates the required
outpu
THANKS!!
Yes...i did have 2 installations...removed the ones from package manager
did the trick!
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> When u say complex samples, i thought it should in time domain,
yes, these are time domain samples.
> I just want use USRP to
> collect the a wide band signal around and save the data to the txt file,
Usually, there's no good reason to save millions of samples in text
format -- it's not reall
When u say complex samples, i thought it should in time domain, and after the
the fft block, it transfer to frequency domain. I just want use USRP to
collect the a wide band signal around and save the data to the txt file, so
i use the usr_spectrum_sense.
and how to make the binary samples visuali
Hi List,
Ramin Fardi at Bluewave microsystems and myself Per Zetterberg have developed a
60GHz front-end (and code) for use with SDRs in particular USRP. The design is
completely open. We will publish full documentation on it in a few weeks (I am
just trying to get the paper finally finished :
Hi Leo,
usrp_spectrum_sense actually has nothing to do with the FPGA -- in fact,
it just gets complex samples from a USRP, and displays them in frequency
domain; so hopefully that answers your question :)
Regarding writing the raw binary data to a file: These are binary
samples, and not text, and
I'm using the usrp_spectrum_sense.py to get the raw data for the wide band
spectrum for FFT in the FPGA . The thing confused me is what the raw data
is. Is that the complex signal before fft ?
As m.raw_data is a string that contains the binary floats, when i try to
log it in a txt file, it output
On Mon, Dec 1, 2014 at 3:01 AM, Tom Tsou wrote:
> Hi Paul,
>
> On Sun, Nov 30, 2014 at 6:52 PM, Paul Creaser
> wrote:
> > I'm currently using the Rational Resampler in GUNURADIO to resample LTE
> > data, for example from 30.72MHz to 15.36MHz and 50MHz to 15.36MHz. I`m
> able
> > to decode the da
>Is this what you meant?
Exactly!
So let's have a look at the backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x76001d2f in pmt::string_to_symbol(std::string const&) () from /
usr/local/lib/libgnuradio-pmt-3.7.6git.so.0.0.0
(gdb) bt
#0 0x76001d2f in pmt::string_to
Hi Michele - It looks like there are multiple GNU Radio installs being
caught in the execution: /usr/local/lib/ and /usr/lib/x86_64-linux-gnu/
:
{{{
Program received signal SIGSEGV, Segmentation fault.
0x76001d2f in pmt::string_to_symbol(std::string const&) () from
/
usr/local/lib/libgnura
Il Sun, 30 Nov 2014 21:16:12 +0100, Marcus Müller ha scritto:
> Hi Michele,
>
> if you built GNU Radio/gqrx with gcc, then the GNU Debugger might be of
> immensive help.
> First make sure you've built GNU Radio with debugging symbols ("cmake
> -DCMAKE_BUILD_TYPE=RelWithDebInfo [...]"), then star
Hi Paul,
On Sun, Nov 30, 2014 at 6:52 PM, Paul Creaser wrote:
> I'm currently using the Rational Resampler in GUNURADIO to resample LTE
> data, for example from 30.72MHz to 15.36MHz and 50MHz to 15.36MHz. I`m able
> to decode the data, so every thing seems to be well.
>
> I chose the Rational Res
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