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 machin

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] 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. H

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). Lo

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 Files\GNURadio-3.7\lib\si

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 (seq

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 the

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] 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 w