METHOD FOR NOISE-FREE TRANSMISSION OF DISCRETE SIGNALS BASED ON SINGLE-SIDEBAND MODULATION Russian patent published in 2023 - IPC H04B1/10 H04L25/08 

FIELD: radio engineering.

SUBSTANCE: invention is intended for use in noise-immune radio communication systems when they operate in channels with a random phase change. The technical result of the proposed method is to increase the noise immunity of receiving a single-sideband modulation radio signal by compensating for a random phase shift of the radio signal during demodulation. This technical result is achieved due to the fact that the phase shift introduced by the radio channel is calculated from the pilot signal, which is a harmonic oscillation at the carrier frequency of the single-sideband modulation radio signal. Then, on the receiving side, before synchronous detection, the initial and channel values of phase shifts are added to the phase of the reference oscillation of the synchronous detector. Due to this, a random change in the phase of the radio signal is eliminated, which ensures an increase in the noise immunity of its reception.

EFFECT: increased noise immunity of receiving a single-sideband modulation radio signal.

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