Dear all,
I have a question related to the constellation objects in gr-digital. After
checking the constellation.cc, I found the constellation of 8PSK and QPSK
class are all Grey coded. Now I want to use a 8PSK constellation with
natural mapping.
I know I can just modify the constellation indexi
Hi all,
I'm working on a system with trellis coding and I met a problem with the
python callback function generated by grc . Because there are several
parameters used in the blocks needs to be updated. I added callback
functions for those parameters in those c++ files.
For example, to add callb
Hi all,
I'm working on a system with packet headers. I want to use the message
decoded by the Packet Header Parser to update a variable.
I knew the message can be stored in a message debug block, and be retrieved
by using the "get_message" function. So I can define a get function to read
the me
I am installing GNU radio using this command
wget http://www.sbrac.org/files/build-gnuradio && chmod a+x
./build-gnuradio && ./build-gnuradio --verbose
But I found at the end of the installation an error (after 2 hours from
beginning of installation during building of extra modules )
Building ext
I think maybe there is something wrong in installation also , so I am
reinstalling GNURADIO now.
I want to make OFDM system with some requirements on parameters. I don't
know how to start . I think I must start by synchronization part as it is
the most important part . So to understand how the sync
On Fri, May 2, 2014 at 8:46 AM, Activecat wrote:
>
> On Fri, May 2, 2014 at 5:57 PM, Sara Chérif wrote:
>>
>> Here is the file . I wrote std::cout in the work() , why I don't see the
>> output from this file on terminal after rebuilding ?!
>
>
> It seems like the work() function is not called at
On 05/02/2014 08:09 AM, Michael Dickens wrote:
> 48: AssertionError: 'system' != 'in_port'
This issue was fixed and merged into the master branch.
--
Johnathan Corgan, Corgan Labs
SDR Training and Development Services
http://corganlabs.com
<>
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On Fri, May 2, 2014 at 11:08 AM, Martin Braun wrote:
> On 02.05.2014 16:59, zielalaoui wrote:
>
>> Hi to all,
>> I resolved my problem and I want to share the solution
>> The problem was the amplitude in the QAM demod block input. I checked the
>> constellation in the transmitter directly before U
% ctest -V -R python_message
UpdateCTestConfiguration from
:/opt/MacPorts/trunk/dports/science/gnuradio/work/build/DartConfiguration.tcl
UpdateCTestConfiguration from
:/opt/MacPorts/trunk/dports/science/gnuradio/work/build/DartConfiguration.tcl
Test project /opt/MacPorts/trunk/dports/science/gn
On 02.05.2014 16:59, zielalaoui wrote:
Hi to all,
I resolved my problem and I want to share the solution
The problem was the amplitude in the QAM demod block input. I checked the
constellation in the transmitter directly before UHD usrp block for being
sure the the constellation points are good d
Hi to all,
I resolved my problem and I want to share the solution
The problem was the amplitude in the QAM demod block input. I checked the
constellation in the transmitter directly before UHD usrp block for being
sure the the constellation points are good depending on the samples/symbol
value (8 w
Hi Ed - Are you asking whether you can reuse the same namespace and block name
with an OOT module? If so, then so long as you don't load the library
containing the GR-provided block(s), you can make it work -- it's a C++ issue
rather than anything else. That said, it would generally be better
With the new use of C++ namespaces in the 3.7 API, is
it possible for an Out-of-tree (OOT) module to create blocks
that are part of an existing GR namespace?
For instance, if I have a new block that processes digital
data streams, can I create an OOT module called "digital"
and add my block to it
Hi,
We are experimenting with ofdm transmission and reception. We are
using benchmark_tx.py and benchmark_rx.py for transmission and reception in
the examples folder of gnuradio (
*/usr/local/share/gnuradio/examples/digital/ofdm*). We are able to transmit
and receive succesfully. Tracing the
On Fri, May 2, 2014 at 5:57 PM, Sara Chérif wrote:
> Here is the file . I wrote std::cout in the work() , why I don't see the
> output from this file on terminal after rebuilding ?!
>
It seems like the work() function is not called at all by the scheduler.
Probably the ofdm sync block doesn't pr
On Fri, May 2, 2014 at 8:49 AM, Marcus Müller wrote:
> Hi Activecat,
>
> typical GUI problem; background is that X applications are inherently hard
> to multithread, which basically requires graphical toolkits to run in a
> main loop. This conflicts with every block being run in its own thread.
>
Hi Activecat,
typical GUI problem; background is that X applications are inherently hard
to multithread, which basically requires graphical toolkits to run in a
main loop. This conflicts with every block being run in its own thread.
The easiest solution nowadays should be that you generate a QT f
Hi,
By chance I am also working on an OOT module for a CC1100-based device.
I started out with a Python version as Michael also suggested, but now I
am migrating it to C++. I actually plan working on it during the EU
Hackfest next week in Karlsruhe.
John, Jay, perhaps we can create a single modul
Gurus,
I try to transfer an image file via a pair of USRPs.
At the receiver side, the data is fed into a custom block, where it plots
the image in realtime using matplotlib's pyplot.imshow().
Unfortunately, in the work() function, the pyplot.draw() causes below
runtime error.
handler caught excep
Here is the file . I wrote std::cout in the work() , why I don't see the
output from this file on terminal after rebuilding ?!
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "frequency_modulator_fc_impl.h"
#include
#include
#include
#include
namespace gr {
namespace analog {
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