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Hello Folks, I have a generator that generates channel impulse response (CIR) between two points (tx and rx) in a 3D closed space, like a room. From CIR, I get power delay profile (PDP)by squaring its absolute value. Here are some questions that I am having difficulty to understand: Let fs be sampling frequency. (1) I found in a textbook: PDP = (abs(CIR).^2)./dt; where dt is 1/fs. Why multiply with dt? (2) To compare two PDPs, it seems that I need to normalize both of the PDPs. Correct? Now, since PDP comes out of a CIR, do I normalize CIR as well as PDP or only one of them (which one?) will do? Thank you for reading and taking time to reply :)______________________________