mimo simulation for matlab

[mercury314]

i am working on a project of mimo, i established the relationship of the original matrix X and r,h matrix by the subscript and got the decision matrix formula by using r and h matrix. such as X~1=h1*r1+h5r1*+h2*r2+h6r2*+h3*r3+h7r3*+h4*r4+h8r4*

The problem is that how can i make the input matrix X to make it correspond with the subscript?

for example:X = [X1 X2 X3 X4 and I can get the decision matrix X~=h1*r1+h2r1*+h2*r2+h1r2*+h3*r3+h4r3*+h4*r4+h3r4*.....
X-2 X1 X-4 X3
X-3 X4 X1 X-2
X-4 X-3 X2 X1 ]

but if I want input real number of X instead of X1 X2 X3, what shall I do?

thanks