Re: [Discuss-gnuradio] Feedback with Transmitters and Receiver

2016-04-17 Thread Pavan Yedavalli
Hi Martin, Thank you again for getting back to me. Let me elaborate on the process that I am doing, and hopefully what I need will be clarified. I have two USRPs connected via MIMO cable that are transmitting a sin wave and one USRP receiving that sin wave. I am trying to implement a system in

Re: [Discuss-gnuradio] 3.7.9.2 Win64 binaries ready + Build scripts

2016-04-17 Thread Geof Nieboer
Achilleas, To troubleshoot that problem: 1- download a program called "Dependency Walker", (www.*dependencywalker* .com/) 2- Then with that, open the _filter_swig.pyd file located at C:\Program Files\GNURadio-3.7\lib\site-packages\gnuradio\filter if you used the default settings. It will give a

Re: [Discuss-gnuradio] Synced MIMO cable clock of both boards changes at every call to tb.start()?

2016-04-17 Thread Pavan Yedavalli
Hi Martin, Thank you for getting back to me. I'm still a bit confused though. You are saying that I need to call set_time_now() or set_time_unknown_pps() to sync the clocks? So, simply connecting the MIMO cable between the two USRPs is not sufficient for the clocks to be synced? And as far as

Re: [Discuss-gnuradio] costas ambiguity and correlate-and-sync block in qpsk

2016-04-17 Thread Landsman, Arik
So the generic_mod() shifts the expected output by 50 samples to the right, thus dropping 50 samples off the end. with this in mind, generating *two* modulated vectors should do the trick: - generate an untrimmed sequence 2 preambles long (seq1) - generate another sequence 3 preambles long

Re: [Discuss-gnuradio] 3.7.9.2 Win64 binaries ready + Build scripts

2016-04-17 Thread Achilleas Anastasopoulos
Some more information about the problem I have running the installed version. In the GNYRADIO command prompt shell I run python and then >> from gnuradio import filter and I get the following: Traceback (most recent call last): File "", line 1, in File "C:\Program

Re: [Discuss-gnuradio] costas ambiguity and correlate-and-sync block in qpsk

2016-04-17 Thread Landsman, Arik
Hi Andy, Just a quick update - I changed sps from 10 to 5 to repeat your trimming procedure. Works like a charm. Certainly clear why you picked the 2nd preamble copy and not the 1st.. as expected correlation is not as strong with decreasing sps (assuming unmod preamble stays same size).

Re: [Discuss-gnuradio] 3.7.9.2 Win64 binaries ready + Build scripts

2016-04-17 Thread Anon Lister
Yep, my bad on UHD, used to doing git builds and seeing 3.10. Cool yeah gqrx would be the priority, baz is just a nice to have (and its a bit dated as its all in WX which seems to be going the route of deprecation). So for some feedback, I installed the binaries and everything seems to work good.

Re: [Discuss-gnuradio] 3.7.9.2 Win64 binaries ready + Build scripts

2016-04-17 Thread Achilleas Anastasopoulos
I installed the binary files gnuradio_3.7.9.2_win64.msi on a Win-8 machine succefullyon the default directory. After running gnuradio-companion file from the Gnuradio 3.7 start menu folder I see a command window opening with message "setting gnuradio environment", then a couple of warnings of the

Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

2016-04-17 Thread sreeraj r
Hi Rob, IMO the easiest way to setup GNURadio on Rpi is to use Archlinux [1]. You could find platform specific installation instructions on the website itself. Rpi-1 is underpowered and make sure that you are not running any GUIs while running a flowgraph. Create your flowgraphs on a local