FIELD: radio equipment.
SUBSTANCE: invention relates to radio engineering, particularly to information processing systems using complex broadband signals and can be used in broadband interference-free radio communication systems. At the transmitting side, carrier and clock signals are generated, from the clock frequency signal binary pseudo-random sequences, phased with each other: synchronizing, information and additional; wherein information and additional sequences are quasi-orthogonal, and the synchronization sequence coincides with the information, the length of sequences of the same or the length of the information and additional sequence can be a whole part of the result of dividing the length of the synchronization sequence by an integer; wherein information sequence is encoded by information transmitted in time equal to period of its repetition by cyclic shift relative to synchronizing or additional sequence by integer number of cycles, determined by transmitted information symbol, and modulo addition of two with additional information bit, encoded sequence is folded modulo two with an additional sequence and phase-shifted carrier frequency signal shifted in phase by 90°, which is folded with a carrier frequency signal, phase-manipulated by a synchronization sequence, the obtained signal is amplified and transmitted over a communication channel; in the receiving device, the input signal is amplified and frequency-converted; a clock frequency signal is generated, from which binary pseudorandom sequences which are phase-linked: synchronizing, information and additional; synchronizing sequence is phased with the received signal, an additional sequence demodulates the amplified and frequency-converted input signal, followed by determining a cyclic shift of the information sequence and the presence of inversion, from which the received information symbol and its additional bit are determined.
EFFECT: high noise-immunity of a communication system when multibeam propagation of signal or effect of narrow-band interference.
4 cl, 2 dwg
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Authors
Dates
2019-06-13—Published
2018-07-23—Filed