Comm Toolbox Turbo Coding - Not Systematic
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Hello, I do not find the turbo coding implementation to match the description, which clearly shows that the systematic bits should appear at the output : https://www.mathworks.com/help/comm/ref/turboencoder.html. If I execute the following :
b1 = rand(1,100) > 0.5;
intrlvrIndices = 1 : length(b1);
hTEnc = comm.TurboEncoder('TrellisStructure', poly2trellis(4,[13 15],13), 'InterleaverIndices', intrlvrIndices);
b2 = step(hTEnc, double(b1)')';
plot(conv(2*b2-1,2*b1(end:-1:1)-1));
There is no trace of the systematic bits at the output. This renders both the encoder and decoder not useful for me. What am I missing ?
4 Comments
Walter Roberson
on 30 Jan 2018
At the bottom of the documentation page, there is a button to choose whether the documentation was useful or not. If you click on No then it brings up a form that allows you to input remarks for consideration by the documentation writers.
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