Re: [Discuss-gnuradio] opengl "persistence" error

2011-04-01 Thread Marcus D. Leech
On 04/01/2011 12:29 PM, Arturo Rinaldi wrote: It happens on all of my computers too. I think the persistence uses a hardware feature that is not widely implemented. -Josh Reinforces my notion that OpenGL is broken in so many fundamental ways. You can't reliably predict what an OpenGL app is g

Re: [Discuss-gnuradio] PyQwt5 and RHEL-6

2011-04-01 Thread Tom Rondeau
On Fri, Apr 1, 2011 at 10:08 AM, Brett L. Trotter wrote: > Who do we petition to get PyQwt5 included in RHEL-6? It compiles > straightforwardly from Fedora 15 SRPM, so it shouldn't be a problem. > This new build requirement means one can't build GnuRadio with stock > RPMs even on RHEL 6 now otherw

[Discuss-gnuradio] UHD Announcement - April 01st 2011

2011-04-01 Thread Josh Blum
Hello list, As promised, we have official releases for UHD and binary installers. http://code.ettus.com/redmine/ettus/projects/uhd/wiki --- -- Binary installers ---

Re: [Discuss-gnuradio] gnuradio.org gerbils

2011-04-01 Thread Tom Rondeau
It should be coming back up. Has anyone else noticed this always happens around the first few days of the month? I suspect this will be a problem for a few more days, and I'll try to keep an eye on it. Ping if you see it down, though. Tom On Fri, Apr 1, 2011 at 4:58 PM, Philip Balister wrote:

[Discuss-gnuradio] gnuradio.org gerbils

2011-04-01 Thread Philip Balister
Could someone feed the gerbils? The website is down. Philip ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Re: questions on SNR estimation from digital-bert examples

2011-04-01 Thread William Cox
Alex, Yes, for what I'm doing, the optical link will be AWGN. I'm doing direct detection (lots of photons) with a uncooled Si photodiode. Thanks for the feedback. I have limited (none) experience with realtime receivers so it's hard for me to judge how much loss I'll experience from the realtime s

Re: [Discuss-gnuradio] Re: questions on SNR estimation from digital-bert examples

2011-04-01 Thread Alexandru Csete
On Fri, Apr 1, 2011 at 7:07 PM, William Cox wrote: > Here's an image of the BER vs. SNR plot plotted along with the theoretical > BPSK line. > http://www.flickr.com/photos/gallamine/5580109538/ > You can see that the experimental data is 3-4 dB greater than the > theoretical BPSK values. > My setu

Re: [Discuss-gnuradio] UHD memory leak?

2011-04-01 Thread Josh Blum
On 04/01/2011 09:44 AM, Brett L. Trotter wrote: > swig/python detected a memory leak of type 'uhd::usrp::multi_usrp::sptr > *', no destructor found. > How can I replicate this error? What program/command did you run? -Josh > Anyone seen this before? > > __

[Discuss-gnuradio] Re: questions on SNR estimation from digital-bert examples

2011-04-01 Thread William Cox
Here's an image of the BER vs. SNR plot plotted along with the theoretical BPSK line. http://www.flickr.com/photos/gallamine/5580109538/ You can see that the experimental data is 3-4 dB greater than the theoretical BPSK values. My setup looks l

[Discuss-gnuradio] UHD memory leak?

2011-04-01 Thread Brett L. Trotter
swig/python detected a memory leak of type 'uhd::usrp::multi_usrp::sptr *', no destructor found. Anyone seen this before? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] opengl "persistence" error

2011-04-01 Thread Arturo Rinaldi
Il 01/04/2011 17:21, Josh Blum ha scritto: On 04/01/2011 07:43 AM, Arturo Rinaldi wrote: Every time I tick the "Persistence" box in one of the scopes i get this error : Traceback (most recent call last): File "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/plotter/plotter_base.py", l

[Discuss-gnuradio] doubt in thesis of Danny Gracia

2011-04-01 Thread ranjini ram
hi i ve some doubts in Danny Gracia's thesis work on NTSC_RECEIVER,if any body ve come across this please be kind enough to clear my doubts.o 1)i didnt understand the modules scaline_detector and max-min detector mainly calculation of parameters like state,scan width,max_scanline_buffer_length and

Re: [Discuss-gnuradio] opengl "persistence" error

2011-04-01 Thread Josh Blum
On 04/01/2011 07:43 AM, Arturo Rinaldi wrote: > Every time I tick the "Persistence" box in one of the scopes i get this > error : > > Traceback (most recent call last): > File > "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/plotter/plotter_base.py", > line 192, in _on_paint > GL.g

Re: [Discuss-gnuradio] How to decode the convolutional code in the GRC

2011-04-01 Thread Achilleas Anastasopoulos
Regarding interleaver, this is already implemented in gr-trellis in a very general (block) form (any kind of permutation of n units of arbitrary byte length. See interleaver.h/cc and trellis_permitation.h/cc/i files for details. Regarding BCH it would be nice to have a gnuradio "module" with g

[Discuss-gnuradio] opengl "persistence" error

2011-04-01 Thread Arturo Rinaldi
Every time I tick the "Persistence" box in one of the scopes i get this error : Traceback (most recent call last): File "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/plotter/plotter_base.py", line 192, in _on_paint GL.glAccum(GL.GL_LOAD, 1.0) File "/usr/lib/pymodules/python2.

Re: [Discuss-gnuradio] How to decode the convolutional code in the GRC

2011-04-01 Thread Feng Andrew Ge
Achilleas, I have looked at the gr-trellis code and my understanding is that the code is used mainly for simulation in GNU Radio (signals don't go over the air). I was thinking about integrating the code into the digital examples, e.g., transmit_path.py and receiver_path.py. However, I have

[Discuss-gnuradio] PyQwt5 and RHEL-6

2011-04-01 Thread Brett L. Trotter
Who do we petition to get PyQwt5 included in RHEL-6? It compiles straightforwardly from Fedora 15 SRPM, so it shouldn't be a problem. This new build requirement means one can't build GnuRadio with stock RPMs even on RHEL 6 now otherwise. ___ Discuss-gnur

Re: [Discuss-gnuradio] How to decode the convolutional code, in the GRC

2011-04-01 Thread Achilleas Anastasopoulos
The matrices PS and PI are documented in the fsm class and in the gr-trellis documentation: PS[s] is a vector of "previous states" that will result in state "s" and PI[s] is the corresponding vector of "input symbols" that will result in state "s" from a previous state. This is useful in the VA bec

Re: [Discuss-gnuradio] Implementing digital-bert with UHD

2011-04-01 Thread Tom Rondeau
On Wed, Mar 30, 2011 at 2:12 AM, wrote: > Hi, > > I am currently new to the GNU Radio project and are currently trying to get > the digital-bert scripts (gnuradio-examples) working with UHD (for my USRP > N210). > > At the beginning I have swapped the existing USRP sinks in > 'benchmark_tx.py' an

Re: [Discuss-gnuradio] Standalone USRP2 firmware app is not transmitting

2011-04-01 Thread B. Sc. Dimitri Block
Hey, I solved it by my own. After increasing the value of scale_i and scale_q (e.g. 2) I was able to transmit something. On 04/01/2011 01:01 PM, B. Sc. Dimitri Block wrote: Hello list, I'm currently working on a firmware app for USRP2 which aims to send a signal in a standalone manner.

Re: [Discuss-gnuradio] FPE with FM Rcvr

2011-04-01 Thread Tom Rondeau
On Fri, Apr 1, 2011 at 1:49 AM, Ron Hall wrote: > Adding to the following, a backtrace that points to the throw > std::bad_alloc (), gr_buffer.cc (88) > > May have some association with another error addressed earlier this year by > T. Rondeau: [Discuss-gnuradio] gr_vmcircbuf_sysv_shm: shmget (1

[Discuss-gnuradio] Standalone USRP2 firmware app is not transmitting

2011-04-01 Thread B. Sc. Dimitri Block
Hello list, I'm currently working on a firmware app for USRP2 which aims to send a signal in a standalone manner. I'm using the the following function. The serial interface returns, that it seems to work by outputting infinity "Done"s. But on the spectrum analyzer I didn't see anything, except