Noise immunity of a binary phase modulated signal demodulator with adaptive configuration change of decision boundaries in a multipath channel

The article considers the possibilities of a coherent phase-modulated binary signal demodulator in a multipath channel with adaptive rotation of a signal constellation. The author determines the rotation angle, which increases the signal distance depending on the information flow of the modulated signal. Moreover, the noise immunity of reception is defined on the basis of statistical distribution functions of signal distances obtained by mathematical modeling on a computer. Therefore, when the signal constellation rotates, the greatest effect is achieved at the maximum intensity of the additional beam. As a result, the research demonstrates the dependence of the rotation efficiency on the intensity of the additional beam.