FIELD: mobile communications.
SUBSTANCE: method includes setting a codes set having certain properties, consisting of Q-numbered code words having length M, including symbols from set of Q short codes. First property is, that none cyclic displacement of code word produces correct code word as a result. Other properties are presence of mutually unambiguous match between long code message and correct code word. In case of noise and interference decoder, at acceptable complication levels, provides for search of both random displacement (in such a way determining frame synchronizations) and transmitted code word (i.e. long code indication message related thereto).
EFFECT: higher efficiency.
5 cl, 22 dwg, 5 tbl
