Hi! I think I'm using the latest OFDM blocks. I then tried using the
ofdm_loopback.grc and an error occured that is similar to the first
one...
Showing: /home/analog/Documents/ofdm_loopback.grc
Generating: /home/analog/Documents/ofdm_loopback_example.py
Executing:
On Thu, Aug 20, 2015 at 3:09 AM, Michael B mibo...@hotmail.com wrote:
Hi Tom,
Thanks for your answer. That's indeed something that I need to think about
more. However, as I understand it, the samples per symbol rate is equal to
(samp_rate / data_rate). My sample rate is 500k, and my data
As a brief reiteration and follow-up regarding registration for this
tutorial: In order to register for the RFNoC tutorial, you must be
registered for the Developers Conference -- not just New Developers Day.
If you have already registered for the Developers Conference, then you
can just register
Hi Logan,
I have faced the same error twice recently in my OOT module and finally tracked
it down to two causes. The basic reason for the 'object has no attribute' error
is that Python's import of your module failed. In the two cases that I saw it
was due to undefined symbols in the shared
Dear all,
we've tried our best to find more space + hardware and have added 6 more
slots to the tutorial. You can register through the same page as before.
Again, it's first come, first serve, so hurry if you want to get those
slots!
Cheers,
Martin
On 28.07.2015 19:52, Martin Braun wrote:
Hey
Nathan and Patrick,
Thanks for the tips!
I started with running: nm -C -u libgnuradio-modulename.so
and the results of that can be found here:
https://gist.github.com/loganwashbourne under the *nm -C -u
libgnuradio-modulename.so*
https://gist.github.com/loganwashbourne/3bb90d787308b45211d0
Hi all,
We're pleased to announce the Tenth Special Cyberspectrum meetup, which
will be held in Washington, DC, during the week of the 2015 GNU Radio
conference: http://www.meetup.com/Cyberspectrum/events/224333749/
Please RSVP if you're coming along!
Does someone could help me to fix it?
I really need to use this feature, and I don't know what I am doing
wrong...
Thanks
--
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Hi!
You only seem to define a version of make with a char*parameter, but try to
call it without parameters. Can you try doing something like
ACK.Text_Sanitize(rubber ducky) ?
Best regards,
Marcus
Am 19. August 2015 16:38:30 MESZ, schrieb Washbourne, Logan
lwas...@ostatemail.okstate.edu:
Hello
I got this working. For completeness, I'll answer my own questions and sum
up what I've learned about filtering.
1) You need to call set_history(num_filter_taps) so that block boundaries
are handled smoothly
2) You input samples one at a time to fir_filter_xxf
3) fir_filter_xxf does not store
Thanks Ashworth. Have you got space for one more?!
Dear all,
Bit of copy-pasta. It's next week, being the last week of *August.*
Balint
On Wed, Aug 19, 2015 at 9:08 PM, Ashworth Payne email.ashwo...@gmail.com
wrote:
If my time-machine gets back from the cleaners before yesterday, I'll
I have a fundamental misunderstanding of the filter system in gnuradio. I
would appreciate some help. I wrote a simple C++ testbench to help me
figure out what's going on, but it continues to not behave as I expect. I
am using fir_filter_fff with 29 taps that I set. I send an impulse into the
On 08/20/2015 03:13 PM, Mark wrote:
Apologies, I didn’t see this at the foot of your Email. I will study it later
tonight or at the weekend.
Many grateful thanks again.
(2) Add a secondary swap file. See, for example:
On 08/20/2015 09:33 AM, Mark wrote:
Here is another error.
The errors are many and I could keep posting variations of these to you and I'm
not sure what purpose they would serve in finding a solution.
Anyway, I will post this error and await your advice before trying again. The
next attempt
Hi,
as Marcus L. said, the logs are tremendously informative. A segfault in
the cc1plus executable (which is the actual C++ compiler in GCC) is
extremely seldom, and should be treated as either a bug in GCC, or a bug
in your system.
Now, I haven't seen an Out-Of-Memory error in a while, since RAM
On Wed, Aug 19, 2015 at 2:17 PM, Richard Bell richard.be...@gmail.com
wrote:
I'm having some trouble getting my code to compile. I get the following
error:
error: ‘kernel’ does not name a type
kernel::fir_filter_ccf *d_shape_filter;
To my *_impl.h file I added the following:
Hi Havard,
for transmission, gr-drm might be the way to go[1]. But since you asked
for reception: I wouldn't know of integration of dream into GNU Radio so
far. However, if I'm not mistaken, dream can use both a sound card for
IF input as well as for baseband IQ input -- and with a sufficient
Marcus,
Thanks for the reply! So I made the make function parameterless and removed
the instances of that parameter throughout my code, tried to run the GRC
again and got the same error as before.
I then changed the: self.ACK_Text_Sanitize_0 = ACK.Text_Sanitize()
to: self.ACK_Text_Sanitize_0 =
After looking through the manual, I see there is a buffer version of fir
filter. Documentation is pretty light on these, but I'm guessing my
previous email is not correct. The delay line values in the non-buffered
filter are not stored in the memory space created when we called new
i've noticed that the digital_swig causes some error for both... looking
at it, there is nothing inside the digital_swig.py file... is that ok?
--
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On 08/20/2015 06:13 AM, Mark wrote:
OK, I changed the distro to Ubuntu 14.04.3 LTS 64Bit and followed your advice to simply issue the command
wget http://www.sbrac.org/files/build-gnuradio chmod a+x ./build-gnuradio
./build-gnuradio --verbose
and I find myself right back where I started last
Hi Jeff,
you could use a strcture like this
MA_divisor = Divide: % =multiply = pad sink.
|- threshold detector-^
i.e. take the divisor path in parallel into threshold detector and use the
output (in {0,1}) in a multiplier for masking the dividing by zero cases.
By
Hey everyone,
I wanted to send a final note about GRCon15 coming up in DC next week. We
have an incredibly lineup of speakers throughout the week and an audience
to match. We still have space available this year as we made sure to get a
larger event room. All the details are on the website,
Hi!
After googling a lot and searching in this lists archive, I couldn't find
any recording of IQ samples from GPS signals.
I'm trying to record one myself, with no luck so far because (I suspect) of
a malfunctioning active antenna.
Would anybody with the right equipment be so kind to record
Dear List!
Does anyone have any experience with using GNURADIO as DRM receiver? Or
using Dream as a library to gnuradio?
Any help will be nice (=
Best regards
Havard Austad
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You may try this GPS signal simulator to generate IQ samples for testing.
http://github.com/osqzss/gps-sdr-sim
--
Wang Kang
Blog: http://scateu.me
Fingerprint: 011F 0492 97D6 5D75 8AC4 6458 D43F 3CE2 3353 B7BD
On Wed, 19 Aug 2015, Francisco Albani wrote:
Hi!
After googling a lot and
GPS data records and processing scripts for GNU/Octave are available at
http://jmfriedt.free.fr/efts_archive.tar.gz. The tutorial I presented on this
topic during the EFTS seminar is summarized at
http://jmfriedt.free.fr/sdr_gps_eng.pdf
JM
You may try this GPS signal simulator to generate IQ
One simple thing that can cause this is forgetting to do sudo ldconfig
after you do your first sudo make install
Various things can cause this, it's a cryptic error that I always hate
seeing.
Rich
On Wed, Aug 19, 2015 at 11:51 AM, West, Nathan n...@ostatemail.okstate.edu
wrote:
My gut is
Hello,
I think that the declare_sample_delay (and/or the way it is used) is
implemented incorrectly for interpolator blocks. Using GR 3.7.6.
The delay should be added **after** scaling the offset by the interpolation
ratio, not before. For example, using the
On 08/20/2015 04:01 PM, Mark wrote:
mark@myGNURadioPC:~$ dpkg-query -l gcc
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version
Hello,
I'm sending a specific frame (length 400 bits), and I would like to examine
the received signal through the channel (delay profile, coherence time,
...). At the receiver, I have In Phase and Quadrature part. Is it a way to
channel sounding ? Thanks to an existing library ?
Thank you.
If my time-machine gets back from the cleaners before yesterday, I'll
certainly be there. Otherwise, August would work better for me.
Wink wink nudge nudge its all fun until someone tries to occupy the same
space/time and looses and eye.
On Wed, Aug 19, 2015 at 7:06 PM, Balint Seeber
Hi Tom,
Thanks for your answer. That's indeed something that I need to think about
more. However, as I understand it, the samples per symbol rate is equal to
(samp_rate / data_rate). My sample rate is 500k, and my data rate (i think) is
only around 100 or 200. See this figure of my (cleaned)
Dear all,
I was working on a project of real-time DECT voice channel decoding.
I believe it might be useful for the community. So I have decided to
share it.
It is available on github with short installation and usage guide:
https://github.com/pavelyazev/gr-dect2
--
Best Regards,
Pavel Yazev
--
Am I correct in concluding when I use fir_filter_fff to filter, that
because it uses its own memory space, I don't need to use set_history and
worry about boundary crossing between calls to work? Will the output of the
filter behave as expected across work call boundaries if I keep passing
samples
Hi Caspar,
Maybe gr-channelsounder
https://github.com/gbaier/gr_channelsounder
is of interest?
Generally, that correlation channel sounder allows you to apply a signal
that contains all frequencies to the channel and then lets you deduct
the channel effect on your particular signal.
Best
I tried DRM TX using gr-drm created by KIT about two years ago. And it did
transmit the right DRM signal and demodulated by Dream software correctly.
Then I made a gnuradio flow to feed IQ samples into a fifo using wav file
sink, then Dream opened this fifo and demodulate.
This method is pretty
On Mon, Aug 17, 2015 at 7:28 PM, Schuyler St. Leger
schuyler.st.le...@gmail.com wrote:
I am trying to build GNU Radio for Android and am having issues with the
build process.
I first tried building GNU Radio for Android on Mac OS X 10.10.4. I was
able to follow the directions successfully
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