Re: [Discuss-gnuradio] UHD Daughter Board EEPROM Format (calibration data)

2013-10-17 Thread Alexander B
Ah yes... I have become used to viewing them as one system. Thank you for the link to the USRP mailing list, I will explore the issue with them. Alex -- View this message in context: http://gnuradio.4.n7.nabble.com/UHD-Daughter-Board-EEPROM-Format-calibration-data-tp44187p44202.html Sent

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Martin Braun (CEL)
On Wed, Oct 16, 2013 at 07:01:31PM -0300, Gui Ritter wrote: Sorry, forgot the attachment. GR 3.7 won't open this. Can you pastebin a screenshot? MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Gui Ritter
I'm new to Pastebin, and I couldn't find an option to upload images, so I used ImageShack instead. http://img844.imageshack.us/img844/5910/s2i3.png ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Martin Braun (CEL)
On Thu, Oct 17, 2013 at 11:13:14AM -0300, Gui Ritter wrote: I'm new to Pastebin, and I couldn't find an option to upload images, so I used ImageShack instead. That's fine :) Have you tried a boxcar window? MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL)

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Sylvain Munaut
http://img844.imageshack.us/img844/5910/s2i3.png I'm not convinced by the way you handle the complex part of the FFT result ... You can't just drop it, it's needed for the reconstruction ... Cheers, Sylvain ___ Discuss-gnuradio mailing list

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Martin Braun (CEL)
On Thu, Oct 17, 2013 at 04:44:00PM +0200, Sylvain Munaut wrote: http://img844.imageshack.us/img844/5910/s2i3.png I'm not convinced by the way you handle the complex part of the FFT result ... You can't just drop it, it's needed for the reconstruction ... You're right, but in this case the

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Marcus D. Leech
On 10/17/2013 10:52 AM, Martin Braun (CEL) wrote: On Thu, Oct 17, 2013 at 04:44:00PM +0200, Sylvain Munaut wrote: http://img844.imageshack.us/img844/5910/s2i3.png I'm not convinced by the way you handle the complex part of the FFT result ... You can't just drop it, it's needed for the

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Sylvain Munaut
Hi, You're right, but in this case the input was already real and the channel doesn't modify the phase. So it's OK--the 'correct' thing would be to do a real FFT. Huh ? To make sure I actually ran a quick python test before posting : In [13]: ifft([x.real for x in fft([1,2,3,4])]) Out[13]:

Re: [Discuss-gnuradio] Retrieving audio after FFT and IFFT

2013-10-17 Thread Martin Braun (CEL)
On Thu, Oct 17, 2013 at 05:17:45PM +0200, Sylvain Munaut wrote: Hi, You're right, but in this case the input was already real and the channel doesn't modify the phase. So it's OK--the 'correct' thing would be to do a real FFT. Huh ? Erm, yep :) My apology. I was assuming you meant the

[Discuss-gnuradio] GR Conf 2014 Survey

2013-10-17 Thread John Malsbury
Just a friendly reminder for those that attended GR Conf 2014 - here is a survey link to provide some feedback: http://www.surveymonkey.com/s/W679DNP Will have a separate, but similar survey for those that could not attend this year. -John ___

Re: [Discuss-gnuradio] Dev Call October 2013

2013-10-17 Thread Martin Braun (CEL)
The video is available at: http://www.youtube.com/watch?v=rBXcqNg_xT8feature=share Thanks everyone for attending! Martin On Wed, Oct 16, 2013 at 11:32:14PM +0200, Martin Braun (CEL) wrote: On Wed, Oct 09, 2013 at 10:57:39AM +0200, Martin Braun (CEL) wrote: As usual, we will be doing a

Re: [Discuss-gnuradio] GR Conf 2014 Survey

2013-10-17 Thread John Malsbury
What I meant was, the survey on GR Conf 2013 that will help improve GR Conf 2014! On Thu, Oct 17, 2013 at 10:41 AM, John Malsbury john.malsb...@ettus.comwrote: Just a friendly reminder for those that attended GR Conf 2014 - here is a survey link to provide some feedback:

[Discuss-gnuradio] How to make modified uhd/host/examples

2013-10-17 Thread Naceur
Hello GR Forum, I have to add some instructions for test purpose into some files of /uhd/host/examples Could you show me how to make the new files, or send me the link of How to instructions. BTW, I never used CMake before. If there is another tool for the purpose I am ok too. Regards, Naceur

[Discuss-gnuradio] Digital Packet Padding for USRP Inquiry

2013-10-17 Thread Michael Berman
I am curious as to the purpose of the 0x55 that is used for padding digital packets to the USRP (in addition to sticking one on the end of the packet to begin with)? Are these ignored and dropped by the USRP, or do they serve some other purpose? And if they are ignored and dropped by the USRP is

[Discuss-gnuradio] GNU Radio Coprocessor Working Group

2013-10-17 Thread Justin Ford
During the monthly developer's call today it was decided that working groups should communicate through the general GNU Radio mailing list. If you do not already track that list, please see http://gnuradio.org/redmine/projects/gnuradio/wiki/MailingLists for guidance, subscription details, and a

[Discuss-gnuradio] i cant work script in python in gnuradio

2013-10-17 Thread Javier Ricke
this message show with lsusrp and usrp_fft.py and others script javier@ubuntu:~$ lsusrp Traceback (most recent call last): File /usr/local/bin/lsusrp, line 25, in module from gnuradio import usrp File /usr/local/lib/python2.7/dist-packages/gnuradio/usrp/__init__.py, line 25, in module

Re: [Discuss-gnuradio] i cant work script in python in gnuradio

2013-10-17 Thread Marcus Müller
Hi Javier, Python can't find the GNU Radio USRP module shared library, maybe because it's not installed correctly. Please note: The version of GNU Radio you are using is old. In fact, it's ancient. Even if you get it to run without error, it makes a lot less fun to work with that than with

Re: [Discuss-gnuradio] how to install blocks in gnuradio

2013-10-17 Thread Louis Brown
The repository is here. I tried compiling but it is not ported to GR 3.7 yet. Hopefully it will be updated. https://github.com/balint256/gr-baz On Oct 17, 2013, at 11:01 AM, discuss-gnuradio-requ...@gnu.org wrote: Dear all, ther is some block are not available in gnuradio

[Discuss-gnuradio] VOLK / GPP Optimization working group

2013-10-17 Thread West, Nathan
Greetings, I have transcribed the discussion and progress of the VOLK working group from GR Con on the wiki http://gnuradio.org/redmine/projects/gnuradio/wiki/grcon13volk The goal of this group is generally to identify areas (and work on them!) that GNU Radio can change to improve performance on

[Discuss-gnuradio] Using USRP to transmit and receive samples

2013-10-17 Thread JPL
Hello, We have used Matlab to generate *.mat file, a file around 1966240 complex number OFDM samples. Thinking to (I) transmit between two USRPs, (II) let the receiver side saving data into file, and later (III) putting the file on Matlab for demodulation. 1. What is the best way to do it? like

[Discuss-gnuradio] How to read the file from File Sink in GRC?

2013-10-17 Thread JPL
Hello, I used the File Sink block to save some data. they are Byte, pink color and complex, light blue color. How can I get something, like *.m script, to open those types of files on Matlab? Thanks a lot. ___ Discuss-gnuradio

Re: [Discuss-gnuradio] Using USRP to transmit and receive samples

2013-10-17 Thread West, Nathan
On Thu, Oct 17, 2013 at 11:14 PM, JPL jplscan...@gmail.com wrote: Hello, We have used Matlab to generate *.mat file, a file around 1966240 complex number OFDM samples. Thinking to (I) transmit between two USRPs, (II) let the receiver side saving data into file, and later (III) putting the