N=32; 
M=N/2;

temp=0.25;

SM=zeros(M*M,N*N);

for i=1:1:M
    for j=1:1:M
        SM((i-1)*M+j,(2*i-2)*N+2*j-1)=temp;
        SM((i-1)*M+j,(2*i-2)*N+2*j)=temp;
        SM((i-1)*M+j,(2*i-1)*N+2*j-1)=temp;
        SM((i-1)*M+j,(2*i-1)*N+2*j)=temp;
    end
end

save SampleMatrix32 SM N M;