Multiplying part of vector with another vector repeatedly without for loop

2017 11 12
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更新时间：2017 11 12
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I have a very long vector A, and I want to take each 10 elements of it and multiply it element-by-element (.*) by another vector has length 10 called "carrier" without using for loop because it takes very long time. This portion of the code did the required but it takes a very long time so is there any way to do it without for loop?
s = [];
for k2 = 1:length(A)
s = [s sequence(1+(k2-1)*10:k2*10).*carrier];
end

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0 个投票

Try using repmat:
s = sequence(:).*repmat(carrier(:),N,1); % N is the no.of 10-element segments in 'sequence'

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