FIELD: data encoding methods.
SUBSTANCE: proposed method for encoding sparse parity control code formed from information-section matrix and from parity-section matrix includes steps of information-section matrix conversion into array code structure and assignment of exponent sequences to each column of sub-matrix; extension of two-diagonal matrix corresponding to parity-section matrix so that amount of displacement between diagonals were of random value; enhancement of normalized two-diagonal matrix; evaluation of degree of displacement for cyclic shift of columns in each sub-matrix of higher normalized two-diagonal matrix; and definition of parity symbol corresponding to column in parity control matrix.
EFFECT: enhanced encoding efficiency.
9 cl, 25 dwg, 5 tbl
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