Using Simulink

Working with Complex Signals

By default, the values of Simulink signals are real numbers. However, models can create and manipulate signals that have complex numbers as values.

You can introduce a complex-valued signal into a model in the following ways:

• Load complex-valued signal data from the MATLAB workspace into the model via a root-level inport.
• Create a Constant block in your model and set its value to a complex number.
• Create real signals corresponding to the real and imaginary parts of a complex signal, then combine the parts into a complex signal, using the Real-Imag to Complex conversion block.

You can manipulate complex signals via blocks that accept them. If you are not sure whether a block accepts complex signals, see the documentation for the block in the "Simulink blocks" section of the Simulink online documentation.

Setting Signal Properties

Checking Signal Connections