METHOD AND DEVICE FOR CHANNEL ENCODING AND DECODING IN COMMUNICATIONS NETWORK USING LOW DENSITY PARITY CHECK Russian patent published in 2012 - IPC H04H60/88 

FIELD: information technology.

SUBSTANCE: method of channel encoding in communications network using low density parity check (LDPC) includes steps in which multiple column groups are generated using grouping (dividing by categories) columns corresponding to data word in LDPC code parity check matrix and column groups are sorted; range of data word to be obtained by reduction is determined; on the basis of determined data word range, reduction of column group after column group, in column groups, in order is performed in accordance with preset reduction structure; and LDPC-coding of reduced data word is performed.

EFFECT: enhancement of communications network functionality due to channel encoding and decoding during generation of LDPC codes with different code word length and different values of coding rate from preset LDPC code.

20 cl, 11 dwg, 3 tbl