METHOD OF FILLING CYCLIC PREFIX OFDM-SYMBOLS WITH SUM OF INFORMATION ELEMENTS OF END OFDM-SYMBOL WITH ELEMENTS OF SEQUENCES OF ZADOFF-CHOO, FRANK Russian patent published in 2024 - IPC H04J13/00 H04L27/00 

FIELD: physics.

SUBSTANCE: invention relates to synchronization systems in cellular communication. Filling the cyclic prefix (CP) of the OFDM symbols with the sum of n information elements of the end of the OFDM symbol with n elements of short multiphase Zadoff-Chu (ZC(u,n)) or FRANK (Fr(p,n)) complex sequences) in conditions of OFDM symbols transmission over a Rayleigh communication channel with additive and multiplicative interference is carried out by elements of the sum of n information sequences of the end of the symbol and complex sequences ZC(u,n) or Fr(p,n) with the same number of elements n, wherein the sum of information and complex sequences ZC(u,n) or Fr(p,n) is filled only by the CPU of the OFDM symbol and the end of the symbol with length of n elements with the possibility of restoring n information elements of the end of the symbol on the receiving side.

EFFECT: increased probability of correct determination of boundaries of OFDM symbols of transmitted frame, which helps to increase the synchronization speed and reduce the time for acquiring synchronism of a base station (BS) with a mobile user at its first connection or short-term loss of synchronization in communication channels with additive and multiplicative interference.

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