FIELD: physics.
SUBSTANCE: preliminary package is additionally formed at the transmitting side, where the said package is a section of oscillation at carrier frequency with zero initial phase and duration of the element of the sign-variable digital signal directly after which the signal with absolute phase-shift keying by 180 degrees is transmitted, and a the receiving side said signal is delayed by a period equal to duration of the elementary package, phase inverted and multiplied by the signal with absolute phase-shift keying by 180 degrees, low-frequency filtered, and the relative code of the signal is converted to the initial code through modulo 2 addition of the digital signal with the relative code and the overall digital signal which is delayed by a period equal to duration of the elementary package.
EFFECT: halving of the error probability when receiving a digital signal.
2 cl, 4 dwg
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