The structural diagrams of devices for the forming and processing of modern amplitude-phase-manipulated signals are considered. The parameters of the modulator and demodulator have been identified, the instability or inaccuracy of whose setting significantly increases the probability of an error when receiving data. Based on the results of the research, recommendations were made regarding the necessary values of the modulator and demodulator parameters to reduce the probability of a symbol error when receiving data. The reproducibility of bit combinations to the points of the 8-AMMC signal constellation (8-position amplitude modulation of many components) is proposed to minimize the probability of a bit error in information communication systems when receiving data.

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