Re: [Discuss-gnuradio] Typo on UdevConfig page in wiki?

2007-11-10 Thread Eric Blossom
On Sat, Nov 10, 2007 at 08:41:24PM -0500, Eric A. Cottrell wrote: > Hello, > > I finally got my main computer fixed, hardware upgraded, and OpenSuSE > 10.3 installed. I noticed going through the wiki instructions when > installing gnuradio in 10.2 and now 10.3 that one command maybe wrong > at h

[Discuss-gnuradio] Typo on UdevConfig page in wiki?

2007-11-10 Thread Eric A. Cottrell
Hello, I finally got my main computer fixed, hardware upgraded, and OpenSuSE 10.3 installed. I noticed going through the wiki instructions when installing gnuradio in 10.2 and now 10.3 that one command maybe wrong at http://gnuradio.org/trac/wiki/UdevConfig. Currently it is: Add a user to

Re: [Discuss-gnuradio] Can't find python-numpy-ext

2007-11-10 Thread Johnathan Corgan
On Sat, 2007-11-10 at 14:02 -0800, Tony wrote: > The GNURadio installation instructions refers to program python-numpy-ext. You need to turn on the "universe" repository, either through Synaptic or by manually editing the /etc/apt/sources.list file. -- Johnathan Corgan Corgan Enterprises LLC ht

[Discuss-gnuradio] Can't find python-numpy-ext

2007-11-10 Thread Tony
The GNURadio installation instructions refers to program python-numpy-ext. When I try to install that program via sudo apt-get -y install python-numpy-ext the system reports E: Couldn't find package python-numpy-ext Can someone comment on the possible cause? Tony

Re: [Discuss-gnuradio] Calculate SNR

2007-11-10 Thread Steven Clark
This article might be helpful. It's targeted at matlab, but easily transferable to python. http://www.transcrypt.com/resources/all/files/19388/_fn/bit-error-rate_simulation_using_matlab.pdf On Nov 10, 2007 11:15 AM, Meenaktchi Venkatachalam <[EMAIL PROTECTED]> wrote: > > > On Nov 9, 2007 11:46 AM

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Firas abbas
Dear Aadil, 1) First upgrade to latest gnuradio release. 2) Put the USRP behind. 3) Start generating the sinewave by software using gr.sig_source 4) Do the mathematics or FFT or whatever you want on this simulated signal. 5) If everything is ok, switch back to USRP, if not, then you have a proble

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
> Also, it's not clear to me what you're actually trying to do. I'd like to capture FM signals and perform ambiguity measurements on them. at the moment, i am failing to capture data correctly. If you want to plot data in real time, please use either the > usrp_fft.py or usrp_oscope.py applica

Re: [Discuss-gnuradio] Calculate SNR

2007-11-10 Thread Meenaktchi Venkatachalam
On Nov 9, 2007 11:46 AM, Brian Padalino <[EMAIL PROTECTED]> wrote: > On 11/9/07, Meenaktchi Venkatachalam <[EMAIL PROTECTED]> wrote: > > Hi, > > > > I was wondering how to calculate SNR. Is there function already a > function > > that I can use to find SNR? > > If you know where your constellation

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Eric Blossom
On Sat, Nov 10, 2007 at 02:34:11PM +0200, Aadil Volkwin wrote: > The Scope was definitely usrp_oscope.py Used Directly from the from the > examples folder: > > [EMAIL > PROTECTED]:~/Desktop/GnuRadioResources/gnuradio-3.0.2/gnuradio-examples/python/usrp$ > ./usrp_oscope.py > I note that you are

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
Thanks for responding and for your input, I answer your questions below, >You're transmitting a 250kHz square source which is the summation of all odd harmonics of >250kHz. I believe that is why you were told to switch over to a sine wave which you would >probably just see a single tone. I have

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Brian Padalino
On Nov 10, 2007 9:39 AM, Aadil Volkwin <[EMAIL PROTECTED]> wrote: > Ok, > > I still have the problem with the reconstruction though. > > When I perform the FFT on the sample set, the plots are not as you would > expect for a pure 250KHz signal? You're transmitting a 250kHz square source which is t

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
Ok, I still have the problem with the reconstruction though. When I perform the FFT on the sample set, the plots are not as you would expect for a pure 250KHz signal? This is the major concern for me and the crux of my problem. ___ Discuss-gnuradio mai

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Firas abbas
It seems that the signal is ok. If you use a pure sinusoidal signal you will see a much clearer picture. Firas Aadil Volkwin <[EMAIL PROTECTED]> wrote: It seems I need to hit return after i've entered the values, my error. the new plot is on the website: https://rrsg.ee.uct.ac.za/members/aad

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
It seems I need to hit return after i've entered the values, my error. the new plot is on the website: https://rrsg.ee.uct.ac.za/members/aadil/ ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnur

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Firas abbas
Hi, Sorry about the scope file, I using a modified version and it seems that I being confused with the standrad one. However, there is something strange in the data shown in your picture. Since you are using decimation =8, the data coming across the USB should be complex 8 Msps. But your scope

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
The Scope was definitely usrp_oscope.py Used Directly from the from the examples folder: [EMAIL PROTECTED]:~/Desktop/GnuRadioResources/gnuradio-3.0.2/gnuradio-examples/python/usrp$ ./usrp_oscope.py Aadil On 10/11/2007, Firas abbas <[EMAIL PROTECTED]> wrote: > > Hi, > > Input signal level is ok.

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Firas abbas
Hi, Input signal level is ok.The scope pictures was not generated by usrp_oscope.py. What is the program used to generate it ? Test The signal with usrp_oscope.py Firas Aadil Volkwin <[EMAIL PROTECTED]> wrote: Hi, I've updated the scope screenshot on the website. Two shots are available, n

[Discuss-gnuradio] Cell cross compilation ready for testing

2007-11-10 Thread Eric Blossom
For those of you with PS3's, I've checked in code that allows us to cross compile from an x86 or x86_64 machine running Fedora 7. Instructions on how to do it are in the wiki: http://gnuradio.org/trac/wiki/CrossCompilingForCell Basically it uses NFS to access / on the ps3 and to create a shar

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
Hi, I've updated the scope screenshot on the website. Two shots are available, notice there seems to be some kind of modulation??? I've tested the input signal with an external scope and the input signal is fine. I don't know why the usrp scope is "misbehaving" The input signal level is set at -1

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Firas abbas
Hi, Use center frequency =0 in the usrp scope. If you use center frequency = 250K, you will shift the signal to 0 Hz. What is your signal input level in dBm ? Firas Aadil Volkwin <[EMAIL PROTECTED]> wrote: Hi, Firstly my apologies for posting known quantities, I guessed that members would l

Re: [Discuss-gnuradio] Signal reconstruction

2007-11-10 Thread Aadil Volkwin
Hi, Firstly my apologies for posting known quantities, I guessed that members would like to see in what way I tinkered with usrp_rx_cfile.py. point taken though. Screen shots of the MATLAB plots as well as the usrp_oscop.py output can be found at: https://rrsg.ee.uct.ac.za/members/aadil/ I'm pr