FIELD: mobile communications, in particular, device and method for encoding-decoding low density block codes with parity check.
SUBSTANCE: the method includes stages, at which dimensions of parity check matrix are determined on basis of speed of encoding during encoding of information with low density block code with parity check and length of code word; parity check matrix of certain dimensions is divided onto a predetermined number of blocks; blocks are classified as blocks, corresponding to informational part; permutation matrices are positioned in predetermined blocks among blocks classified as first checking part, and identity matrices are positioned in full lower triangular form in predetermined blocks among blocks, classified as second checking part; and permutation matrices are positioned in blocks classified as informational part, resulting in minimal cycle duration being maximized and weight values being irregular on the coefficients graph of low density block code with parity check.
EFFECT: increased reliability of data transmission and improved correcting ability of low density code with parity check.
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