Multiply matrices with complex values

Question

Lokeshwaran 2012-11-28

I have a special requirement with respect to the multiplication of the matrices. The elements of the matrices are complex numbers.

eg, A = [1+1i, 2+2i; 3+3i 4+4i] B = [1+1i, 2+2i; 3+3i 4+4i]

    If C = A*B , C is usually a matrix of complex values.
  that is, C(1,1) =  ((1+1i)*(1+1i))+((2+2i)*(3+3i))

But in my case I want C(1,1) = abs((1+1i)*(1+1i))+abs((2+2i)*(3+3i)) and similiarly for all the elements of the reulting matrix C

Is there any special function to do this automatically or should this be done manually using loops?

Azzi Abdelmalek 2012-11-28

编辑：Azzi Abdelmalek 2012-11-28

C(1,2)=?

What does mean "similarly"?

Answer 1

Babak 2012-11-28

The result is equivallent to

 A = [1+1i, 2+2i; 3+3i 4+4i];
 B = [1+1i, 2+2i; 3+3i 4+4i];
 C = abs(A)*abs(B)

since

 a = 3+2i; b = 4-1i; % for exmaple
 abs(a*b) = abs(a)*abs(b)

for any scalar complex number a, b.