Equation Implementation in Matlab

I have a vector X of 200*1 w=[1 2 3 4 5]

up(n)=summation(k=1to5) w* X(n-k)

Explanation for n=1, X should take previous five samples, X(200),X(199)...X(196) and iiy for n=2 and goes on

[José-Luis]

Please try to read your own question from the perspective of someone who has no idea what you are doing.

Answer 1

[Star Strider]

I am not certain if a matrix-vector product or convolution/filter is what you are doing.

Does this do what you want:

X = randi(50, 200, 1);
w=[1 2 3 4 5];
Xr = reshape(X, [], 5);
up = Xr*w';

It creates ‘up’ as a (40x1) vector.