calling a matrix with indexing

Dear all, I am not sure whether it is called inequality addition (for the sigma part) or anything, but I have to call the matrix to solve the equation. Here is the formula:

here is the variable: K=2; k=1:K; l=1:K, except l=k. for example:

Do you have any idea to generally write it in matlab? maybe using for or while function?

Thank you

Answer 1

[ag]

Hi Mei,

To implement the given formula, you can use a nested "for" loop as shown in the below code snippet:

% Compute Q_k for each k
for k = 1:K
    sum_term = 0;
    for l = 1:K
        if l ~= k
            % Compute the term for l != k
            term = (P(l) / d(k)) * H(k, l, :) * F(l, :)' * F(l, :) * H(k, l, :)';
            sum_term = sum_term + term;
        end
    end
    Q(k) = sum_term;
end

For more details, please refer to the following MathWorks documentations:

• Array Indexing - https://www.mathworks.com/help/matlab/math/array-indexing.html
• for - https://www.mathworks.com/help/matlab/ref/for.html

Hope this helps!