Re: [Discuss-gnuradio] Question on gnuradio.wxgui and the agc block

2009-05-21 Thread Firas Abbas
Hi, > On Thu, 5/21/09, Ankit Saf wrote: > > > I'll go a step further and ask if there is are more help files on available > GNU radio blocks, and > about writing your own block? > > Thanks! There is a old and un-updated document that lists Gnuradio blocks at: http://www.scribd.com/doc/9688

Re: [Discuss-gnuradio] Using a USRP as a PID feeback controller

2009-05-21 Thread Aviv Keshet
I've got my verilog code for a USRP-based PID controller to the stage where it is more or less coherent, and commented. I made some modifications to the top level file, and added a few small .v modules. What is the reigning protocol on this mailing list about .v file attachments? Can I just attach

[Discuss-gnuradio] Re: Q. USRP2+RFX2400 performances on dynamic range, and decim

2009-05-21 Thread Yc Park
Yc Park wrote: > Eric Blossom wrote: >> On Thu, May 21, 2009 at 08:23:31AM +0200, Yc Park wrote: >>> The recorded signal showed only about 25dB between the in-band spectrum >>> level(-25dBm/RBW) and the noise floor (-50dBm/RBW) while the original >>> signal shows at least 45dB. >> >> What gain set

[Discuss-gnuradio] Re: Q. USRP2+RFX2400 performances on dynamic range, and decim

2009-05-21 Thread Yc Park
Eric Blossom wrote: > On Thu, May 21, 2009 at 08:23:31AM +0200, Yc Park wrote: >> The recorded signal showed only about 25dB between the in-band spectrum >> level(-25dBm/RBW) and the noise floor (-50dBm/RBW) while the original >> signal shows at least 45dB. > > What gain setting are you using? > H

Re: [Discuss-gnuradio] Q. USRP2+RFX2400 performances on dynamic range, and decim

2009-05-21 Thread Eric Blossom
On Thu, May 21, 2009 at 08:23:31AM +0200, Yc Park wrote: > Hi guys, > > Using my usrp2+RFX2400 and the GRC with gnuradio 3.2svn, > I've recorded a wimax signal out of a RF signal generator. > > However, I found some issues with the result and ask you guys for some > help. > (I tried to search on

[Discuss-gnuradio] Question on gnuradio.wxgui and the agc block

2009-05-21 Thread Ankit Saf
Does anyone have info on gnuradio.wxgui? Like a list of blocks available through it, etc? Also, I have "A dictionary of the GNU Radio blocks" by Dawei Shen, but I couldn't find anything about the gr.agc_cc block in it. Any help on that? I'll go a step further and ask if there is are more help file

Re: [Discuss-gnuradio] Handling Messages

2009-05-21 Thread Michael Dickens
Hi Ali - I think the issue is that the output of the C2M is of item_size 'fftsize', whereas the message_sink has item_size of 'gr.sizeof_float'. Try incorporating the 'gr.vector_to_stream' you created between the C2M and the message_sink. - MLD On May 21, 2009, at 11:34 AM, ali siddiqi wro

[Discuss-gnuradio] Handling Messages

2009-05-21 Thread ali siddiqi
Hi, I am trying to make a flowgraph as given: signal source --> stream2vector --> fft --> c2m --> msg_sink If the size of fft is 4096, then I want to retrieve these 4096 points in python and then do simple maths and logic based on some of the values within these 4096 points within python. And

[Discuss-gnuradio] a few queries related to ofdm implementation

2009-05-21 Thread sheshanandan k narayanan
Hi,I am using the trunk repository with revision no. 11025. I am presently experimenting on ofdm. The given code is working fine on the USRP setup. Here we specify the center frequency at which the ofdm signal is going to be transmitted.1) Is this the center frequency of the sub-carrier of a par

[Discuss-gnuradio] Modifying the USRP FPGA core

2009-05-21 Thread Mark Porter
Hi, Since the USB data rate is the limiting factor in my current setup I figured I would implement some functions on the FPGA itself since they are likely to be simple to implement. I have loaded the project in Quartus and have been looking at the Schematic for some time. I already figured I have

Re: [Discuss-gnuradio] Using a USRP as a PID feeback controller

2009-05-21 Thread Rakesh Peter
Hello Aviv... I believe this has something similar to what you were mentioning... http://staff.washington.edu/jon/gr-mrfm/ Regards, Rakesh On Wed, May 20, 2009 at 4:20 AM, Aviv Keshet wrote: > This email is not a question, but more of a comment. > > I've been working for about a week on re-p