> Hello Cinaed, Discussion List,
>
> Once again thank you for the response,
>
> Please believe me that i have gone through tutorials, and i have
> understood that in the python Top block i could enable/disable blocks, i
> also went through this specific one for modulations:
>
> https://wiki.gnuradio.org/index.php/Guided_Tutorial_PSK_Demodulation
>
> An you are totally correct regarding how to modulate properly,
> nevertheless what i am trying to do is that while the flowgraph is
> running, to switch the modulation (even if is not totally tuned) and
> that i can see that modulation in the QT GUI.
>
> That´s why, if you take a look at my flowgraph you see how I create a QT
> Chooser so I can select the modulation.
>
> My main problem is that i can not get it to work, it does not switch to
> other modulation when I switch in the QT Gui while I run the flowgraph.>
> I would appreciate any ideas regarding this, and also i f you (Cianed)
> could describe me a little more how a Hierarchical Block could help me
> in this.
For hierarchical Block - see the tutorials and Google.
I use QT for passing variables and parameters - but I mainly use the
command line. So I can't help you with QT.
See if you can actually calculate BER for a single psk - say BPSK -
configure by a Constellation Object.
If that works, then add another Constellation Object - say for QPSK -
configured - only for QPSK - so now you have 2 Constellation Objects in
the flowgraph.
Now run them in parallel using BER Curve.
-- Cinaed
>
> Once again thank you all.
>
> Kind regards.
>
> On Tue, Jan 22, 2019 at 3:51 PM Cinaed Simson <cinaed.simson@gmail.com
> <mailto:cinaed.simson@gmail.com>> wrote:
>
> On 1/22/19 8:51 AM, Luis Felipe Albarracin Sanchez wrote:
> > Hello Cinaed,
> >
> > Thank you for the quick response,
> >
> > I look at your flowgraph, and i appreciate al the corrections you
> told me.
> >
> > I must just say that i was guiding myself through the examples
> that are
> > under the folder digital when you install GNU Radio.
>
> Those examples presume you have already gone through the tutorials.
>
> >
> > I took your model, and did some changes to mine (attached my new file)
> > but i still can´t get in the QT GUI to switch between different
> > modulations, if i start with 8-QAM it does not switch to QPSK when i
> > choose QPSK in the QT Chooser, i would appreciate if you can give me
> > any ideas regarding this.
>
> Right click on the Constellation Object, and there's a pull down menu
> under Constellation Type - select the one you want.
>
> If that's not what you're looking for then you have to figure out how to
> do whatever it is you want to do. And it may require creating a
> hierarchical block.
>
> My advice is to work through the tutorials.
>
> -- Cinaed
>
>
> >
> > Kind regards.
> >
> >
> >
> > On Tue, Jan 22, 2019 at 1:00 AM Cinaed Simson
> <cinaed.simson@gmail.com <mailto:cinaed.simson@gmail.com>
> > <mailto:cinaed.simson@gmail.com <mailto:cinaed.simson@gmail.com>>>
> wrote:
> >
> > On 1/21/19 3:47 PM, Luis Felipe Albarracin Sanchez wrote:
> > > Hello all,
> > >
> > > I am exploring the BER measurements in GNU Radio for different
> > > modulations (I know Error Rate is deprecated) but i tried
> the example
> > > under the digital folder for BER measurement and I
> understood all the
> > > flowgraph.
> > >
> > > After this i wanted to change the modulation in the QT GUI so i
> > added a
> > > QT Gui Chooser as seen in the flowgraph below:
> > >
> > > Captura de pantalla de 2019-01-21 18-37-34.png
> > >
> > >
> > > Attached is the flowgraph for reference.
> > >
> > > When i add this i expected that the Constellation would change
> > > accordingly, but it does not when i choose a different
> constellation
> > > with the chooser, for instance if the default value in the
> chooser is
> > > QPSK it shows at the beginning:
> > >
> > > Captura de pantalla de 2019-01-21 18-44-25.png
> > >
> > > But If i switch in the same running time to 8-PSKn it shows:
> >
> > Everything - I mean everything - was configured with 8PSK
> constellation
> > data- and incorrectly - even the random number generator!
> >
> > I'm surprise you could see anything!
> >
> > Enclosed is the proper way to create a QPSK constellation.
> >
> > Work through the tutorials at
> >
> > https://wiki.gnuradio.org/index.php/Tutorials
> >
> >
> > -- Cinaed
> >
> >
> > >
> > > Captura de pantalla de 2019-01-21 18-44-44.png
> > >
> > >
> > > Which is not an 8-PSK modulation scheme.
> > >
> > > I would appreciate some help,. regarding what i am doing
> wrong for
> > > choosing a Modulation through the QT GUI.
> > >
> > > Thanks in advance.
> > >
> > > Kind Regards.
> > >
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org>
> <mailto:Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org>>
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > >
> >
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org>
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> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >
> >
> >
> > --
> > Eng. Luis Felipe Albarracin
> > Msc. Telematics / MBA
> > PMP
> > CCNA/CCDA/CCNP/CCDP/CCIP
> > ITIL v3 Foundation
> > "Die Grenzen meiner Sprache bedeuten die Grenzen meiner Welt"
>
>
>
> --
> Eng. Luis Felipe Albarracin
> Msc. Telematics / MBA
> PMP
> CCNA/CCDA/CCNP/CCDP/CCIP
> ITIL v3 Foundation
> "Die Grenzen meiner Sprache bedeuten die Grenzen meiner Welt"
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