How can I compute value of this variable y iteratively

 j = 0:jmax - 1;
 jmax=5;
 x(j)      = [zeros(t(j),1);x_m';zeros(t_max -t(j),1)];
 y_m = x(1)+x(2)+x(3)+x(4)+x(5);% Simulated Measurement
 %       y_m=y_m';

[madhan ravi]

what's t ?

[Geoff Hayes]

Trishita - is the above code supposed to be in a for loop like

 for j = 0:jmax - 1
    % your code

You will need to define jmax before you use it

 jmax = 5;
 for j = 0:jmax-1
    % do something
 end

But what is it that you want to do on each iteration of the loop? You update the x array but it is unclear what this is? Is each element of x a row? Please provide more details...