METHOD OF PACKET DATA TRANSMISSION WITH NOISE-LIKE SIGNALS Russian patent published in 2024 - IPC H04L27/20 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used in systems for noise-immune packet data transmission. Method of packet data transmission with noise-like signals consists in the fact that two binary pseudorandom sequences (PRS), synchronizing and information ones, are generated. Synchronizing PRS is an M-sequence, and the information PRS is formed from the M-sequence by adding one constant element. At the beginning of transmission of each data packet, PRS is phased and a clock signal is transmitted with duration that is a multiple of the repetition period of the information PRS. To generate a clock signal, the carrier frequency signal is phase-shift keyed by the synchronizing PRS and is additionally phase-shifted by 90 degrees at those time intervals on which the values of the synchronizing PRS and information PRS do not coincide. When transmitting data, at each repetition period of the information PRS, two modulated sequences are generated by cyclic shift of the M-sequence from which the information PRS is formed, by the number of elements determined by two transmitted information symbols and addition of one permanent element. Two additional sequences are generated by modulo two addition of one of the modulated sequences with the synchronizing PRS, and the other is with synchronizing PRS, delayed by an integer number of clock frequency periods. Carrier frequency signal is modulated with additional transmitted data by multi-position phase-difference modulation with a transmission duration equal to the repetition period of the information PRS. Obtained phase-shift keyed signal is phase-shift keyed by one of the additional sequences and is phase-shifted by 90 degrees at those time intervals on which the values of the additional sequences do not coincide.

EFFECT: shorter data transfer time.

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