Abstract

The increasing role of digital radio receiving techniques and various adaptation techniques in modern radio systems has led to the appearance of variety of automatic gain control (AGC) systems used as systems of adaptation. AGC types classification and its development tendencies are considered. The paper investigates the influence of the value of the reference level of wideband digital radio receiver digital AGC on its behavior under multi-signal impact. The amplitude of the input signal effect on the value of the signal constant component is considered. The variant of AGC system design is suggested. Conclusions about the quantitative parameters and permissible changes of AGC reference level with an aim to increase performance speed are made.

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