Using random signals with predefined statistical properties for the study of circuits in PSpice environment

The proposed paper is presented the possibilities for generation of discrete time signals with predefined statistic and frequency parameters, corresponding to the real input or noise signals for analog circuits. A method and program implementation in the MathCAD environment is shown. The signals are statistically modeled by three different autocorrelation types of functions (with predefined dispersion, time correlation and duration). The generated random signal is implemented in the PSpice environment with the ability to change the statistical characteristics of mean and variance, according to the study.