Hello Cinaed and all, Thanks for the response.
Mainly I want to change the modulation directly while running the flowgraph (either by QT GUI Chooser or other switch), without having others in parallel for future control systems implementations.´ I don´t know if you have any ideas or guidelines for this. Once again thank you. Kind Regards. On Tue, Jan 22, 2019 at 9:22 PM Cinaed Simson <cinaed.sim...@gmail.com> wrote: > On 1/22/19 1:54 PM, Luis Felipe Albarracin Sanchez wrote: > > 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.sim...@gmail.com > > <mailto:cinaed.sim...@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.sim...@gmail.com <mailto:cinaed.sim...@gmail.com> > > > <mailto:cinaed.sim...@gmail.com <mailto:cinaed.sim...@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> > > <mailto:Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org>> > > > 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" > > -- 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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