METHOD FOR CODE FRAME SYNCHRONIZATION FOR CASCADE CODE WHEN APPLYING STRICT SOLUTIONS

摘要

FIELD: physics.;SUBSTANCE: in the method the received input sequence consisting of several consecutive words of the numbering sequence and the phasing sequence are multiplied by the check polynom of the noise-immune cyclic code and summed, and then multiplied by the check polynom of the numbering sequence and the sum of the syndromes of the noise-immune cyclic code and phasing sequence are obtained, from which the phasing sequence is subtracted and the syndrome of the noise-immune cyclic code is obtained, if the syndrome of the noise-immune cyclic code corresponds to the allowable error combination, the numbering sequence of the received noise-immune code is extracted. Then, the numbering sequences within each list are compared for the assigned synchronizing counters and the coincidence counters. By the result of comparison of coincidence number with the threshold value, a decision on code frame synchronization of the input sequence is made.;EFFECT: improved synchronization accuracy.;1 cl