DIGITAL COHERENT DEMODULATOR OF FOUR-POSITION SIGNAL WITH PHASE MANIPULATION Russian patent published in 2018 - IPC H03C3/00 

Abstract RU 2656577 C1

FIELD: radio engineering and communications.

SUBSTANCE: invention relates to radio engineering. Digital coherent demodulator of a four-position signal with phase manipulation contains an analog-to-digital converter (ADC), a shift register of multi-digit codes for four samples, first and second n-stage signal quadrature processing channels (QPC), a clock generator, a summing device, a subtracting device, a multiplier and a resolver, wherein the outputs of the first and second QPCs are connected to the first and second inputs of the summing device and to the first and second inputs of the subtracting device, the output of the summing device is connected to the first input of the resolver and to the first input of the multiplier, the second input of the resolver is connected to the output of the summing device, the output of the multiplier is connected to the second input of the resolver, a binary two-digit code of the received information symbol is generated at the output of the resolver, synchronous pulses from the phase synchronization system are fed to the control input of the clock generator, and the demodulator symbolic synchronization signal is fed to the control input of the resolver.

EFFECT: technical result is to provide high-speed digital coherent demodulation of signals with four-position phase shift keying.

1 cl, 1 tbl, 6 dwg

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RU 2 656 577 C1

Authors

Chernoyarov Oleg Vyacheslavovich

Glushkov Aleksej Nikolaevich

Litvinenko Vladimir Petrovich

Litvinenko Yuliya Vladimirovna

Matveev Boris Vasilevich

Salnikova Aleksandra Valerievna

Dates

2018-06-05Published

2017-08-30Filed