Complex numbers in Simulink?

[snovite]

Hi Group!
Any Matlab/simulink experts there?
How to deal with complex numerical data in simulink? most blocks take
only double, real, boolean etc. but not complex.
there's a block to convert the complex number into two: real &
imaginary parts, but the next connected block doesnt accept 2 signals
in the place of one. How can this problem be overcome?


Thanks in advance.