How to use 'idfrd' system object as a channel model in simulink
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Hello dear members,
I have created an idfrd object using measured frequency response data (using Magnitude/Angle measurements). Now I want to incorporate this data into a continuous time SISO model, which I can place as the channel between Tx/Rx in a communication system simulation.
I have tried using 'LTI system' block from Control System Toolbox library, but it does not support idfrd system object.
What can I do now? Is there any alternative way to address this issue? I am using Matlab/Simulink 2014a.
Arkadiy Turevskiy 2015-4-24
You cannot do time domain simulation on a frequency response model. What you can do is fir a transfer function or state space model to match the measured frequency response. You can use commands tfest and ssest for that. Once you have a transfer function/state-space object, you'll be able to simulate in Simulink using LTI system block or just Transfer Function and State Space blocks.
Find more on Transfer Function Models in Help Center and File Exchange
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