ifft integer matlab cyclic prefix

2016 12 20
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更新时间：2016 12 20
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x=ifft(modData).*sqrt(64); x1 = [x(:,end-Ncp+1:end) ,x];
i get this error :Subscript indices must either be real positive integers or logicals.

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Adam
Adam 2016-12-20
编辑：Adam 2016-12-20
So make sure the subscript indices are real positive integers or logicals! You haven't given any indication as to what most of the things are in that expression for us to know, but using the debugger you should be able to fix this very quickly.
best16 programmer
best16 programmer 2016-12-20
the modData is modulated with qpsk, so it gives complex values,i want to add the cyclic prefix using the x1.it still given me the same error

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Adam
Adam
2016-12-20

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