METHOD FOR DECODING CYCLIC INTERFERENCE-RESISTANT CODE Russian patent published in 2006 - IPC H03M13/15 G06F11/00 

FIELD: communications engineering, in particular, engineering of data transfer systems for decoding cyclic interference-resistant codes without preliminary phasing.

SUBSTANCE: during decoding of cyclic interference-resistant code, range of presumed lengths of code combinations [n_min-n_max] is determined, and assumed phase of beginning of code combination f is set, from phase f in received code series several presumed code combinations S_i are selected and pairs are formed from selected combinations in accordance to condition S_i≠S_k, N of greatest common divisors, represented by polynomials, is calculated, and from calculated polynomials a polynomial of least order is selected, which is considered equal to original polynomial g(x) of cyclic interference-resistant code, if N of greatest common divisors is equal to "1", then length of proposed code combination n is increased by one, phase of proposed beginning of code combination is altered for one, if greatest common divisor, different from "1", is not found for all n∈[n_min-n_max], combinations of errors are determined in code word and selected code combinations are decoded.

EFFECT: development of method for decoding cyclic interference-resistant code under conditions of adaptation of interference-resistant code to quality of information transfer channel.

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