Quantitative analysis of noise's linearity and Gaussianity in electronic devices
MA Zhongfa · Journal of Xidian University · 2009
A quantitative analysis method of noise's linearity and Gaussianity in electronic devices is deduced on the basis of the higher order statistics(HOS) theory,from which a parameter named the quadratic sum of the bicoherence is brought forward.Through the analysis of four types of noise signals,non-linear non-Gaussian noise,linear non-Gaussian noise,non-linear Gaussian noise,and linear Gaussian noise,a quantitative criterion for appraising the linearity and the Gaussianity of noise signals is presented.By applying this method to the analysis of real noise signals in electronic devices,it is proved that real noise signals could be clearly classified into the above-mentioned four types of noise.This work provides a theoretical basis and quantitative criterion for the analysis of noise's nonconventional characteristic in electronic devices.