Method and apparatus for channel encoding in a communication system using punctured LDPC codes

摘要

The invention relates to a method and apparatus for a channel decoding using a Low-Density Parity-Check (LDPC) code, the method comprising: demodulating a signal transmitted from a transmitter; determining position of the punctured parity bits by estimating information about a predetermined order of parity bit sets to be punctured and the number of parity bit sets ; and decoding data using the positions of the punctured parity bits, wherein determining position of punctured parity bits comprises, determining a number of parity bits to be punctured; determining a number of parity bit sets to be punctured based on the determined number of parity bits to be punctured; and acquiring a predetermined order of parity bit sets, wherein the predetermined order of parity bit sets to be punctured is determined as 6, 4, 13,9,18,8,15,20,5,17,2,22,24,7,12,1,16,23,14,0,21,10,19,11,3, when a codeword length is 16200 and an information length is 7200.