Analysis of Agc Nonlinear Effects Utilizing the Volterra Approach

TL;DRAbstract

A method utilizing the Volterra nonlinear transfer functions for estimating the interference effects in systems with Automatic Gain Control (AGC) is developed in this report. The nonlinear interference signals at the output of systems with AGC are shown to be resulting from two nonlinear sources i.e. nonlinearities that are inherent to the devices comprising the AGC system and the nonlinear nature of the AGC system itself. Nonlinear models for active devices commonly used in communication systems are presented. These device models are incorporated in the methodology that is developed for estimating the nonlinear interference effects caused by the two sources mentioned earlier. The methodology is demonstrated through examples. The examples also demonstrate how the two nonlinear sources may be used to reduce the overall nonlinear interference signals at the system output and in effect improve system performance. The analysis is extended to AGC systems in cascade configuration. The ways i

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