METHOD OF FORMING NOISE-LIKE PHASE-SHIFT KEYED SIGNALS Russian patent published in 2020 - IPC H04L27/20 

FIELD: radio engineering and communication.

SUBSTANCE: method of generating noise-like phase-shift keyed signals involves generation of two binary quasi-orthogonal pseudo-random sequences of maximum length: synchronizing (SS) and information (IS). At each repetition period of IS, modulated PRS (MS) is formed by cyclic shift of IS of initial length by number of elements, determined by transmitted information symbol, and additionally modulo two addition with another bit of information. IS and MS are shortened or elongated by one element. MS and delayed by several cycles SS are summed by modulo two. Result of addition is summed majority with SS and IS, and phase shift keying of the carrier frequency signal carry out by received signal. Phase-shift keyed signal is additionally shifted in phase by 0 degrees or 90 degrees with a signal generated by modulo two addition of SS and IS. SS periodically phased with IS. MS and IS are preferably M-sequences which form a Gold sequence.

EFFECT: invention can be used in radio communication systems with noise-like signals to increase their noise immunity and reconnaissance immunity.

1 cl, 1 dwg