Computing distortion in analog FM communication systems

This paper describes a method for computing baseband distortion in analog FM communication systems; the method is based on recent theoretical work available in the literature. The input baseband signal is taken to be a zero-mean, stationary Gaussian process having an arbitrary power spectral density. A variety of graphical results are presented in order to demonstrate the utility of this method of computing FM distortion. It is shown that the often-used noise loading test does not necessarily represent a worst-case test.