Noise suppression and spectral decomposition for state-dependent noise in the presence of a stationary fluctuating input

In the presence of a stationary fluctuating input, the noise suppression and spectral decomposition for the state-dependent noise was analyzed. It was studied in context with the power spectrum of intrinsically noisy output signal for decayed input correlation system. The input signal intensity and output signal autocovariance underwent simple decomposition because the intrinsic noise at output signal depended on input signal intensity. The results show that noise suppression was possible if the stationary average of the intensity of the state-dependent noise decreases.