Optimization of Characteristics in Nonlinear Systems

In recent years, devices with the digital formation of the envelope for group carriers have become widespread in the transmission paths of various radio engineering systems. However, this formation has a significant disadvantage: high sensitivity to non-linear distortions (more often it is intermodulation distortion) arises in amplification paths. It is often very difficult to evaluate the influence of many nonlinear effects by compiling and solving a system of nonlinear integro-differential equations. Therefore, one has to turn to mathematical models. The problems associated with the creation of mathematical models of nonlinear systems form one of the main areas of science and technology – optimization, or modeling, identification and approximation of their transfer characteristics.