Matlab Apppdesigner Constellation Diagram

Question

Godswill Tabag 2020-12-16

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/695115-matlab-apppdesigner-constellation-diagram

回答： Monisha Nalluru 2021-3-16

I recently started to use MATLAB's Appdesigner and I want to display a signal's constellation diagram on the Axes with a push of a button but I have no idea how.

Below is the code I used for 8-QAM and scatterplot doesn't seem to work.

Any help would be appreciated thanks.

        % Button pushed function: QAMButton
        function QAMButtonPushed(app, event)
            m=8;
            k=log2(m);
            n=9e3;
            nsamp=1;
            x=randi((0:1),n,1);
            xsym = bi2de(reshape(x,k,length(x)/k).','left-msb');
            y=qammod(xsym,m);
            
            switch app.ButtonGroup.SelectedObject.Text
                case 'Waveform'
                case 'Phasor'
                case 'Constellation'
                    scatterplot(app.UIAxes,y)
                    
            end