MATLAB: Help to create a loop

Hi everybody, Can anybody help me to write a loop that achieves the same result as this code?:
%



G(:,:,1)=kron(J*A'^0,Phi(:,:,1));
G(:,:,2)=kron(J*A'^1,Phi(:,:,1))+kron(J*A'^0,Phi(:,:,2));
G(:,:,3)=kron(J*A'^2,Phi(:,:,1))+kron(J*A'^1,Phi(:,:,2))+kron(J*A'^0,Phi(:,:,3));
G(:,:,4)=kron(J*A'^3,Phi(:,:,1))+kron(J*A'^2,Phi(:,:,2))+kron(J*A'^1,Phi(:,:,3))+kron(J*A'^0,Phi(:,:,4));
%
and so on, until G(:,:,9). Where
%
J=[eye(3) zeros(3)]
%
A =
-0.32   0.15  0.96   -0.16  0.15  0.93
 0.04  -0.15  0.29  0.05  0.02   -0.01
-0.00   0.22  -0.26  0.03  0.35   -0.02
 1   0  0  0  0  0
 0   1  0  0  0  0
 0   0  1  0  0  0
and Phi is in attached.
Thanks for your help
best,

Best Answer

Here is one potential approach:
G = zeros(9,18,9); %seems to me to be the size you need to preallocate
for ii=1:9
  for jj=ii-1:-1:0
    G(:,:,ii) = G(:,:,ii) + kron(J*A'^jj, Phi(:,:,ii-jj));
  end
end
Related Question