Method of generating low-density parity check matrix and method of generating parity information using the low-density parity check matrix

摘要

A method of generating a parity check matrix and a method of generating parity information using the parity check matrix, wherein the method of generating a parity check matrix includes selecting elements of a low-density parity check (LDPC) matrix such that every element of a top right corner portion of a Richardson matrix is 0. In the selection of the elements of the LDPC matrix, two unit matrices of m/2*m/2 are arranged in a top portion of a portion corresponding to parity information in the LDPC matrix and elements of two matrices located below the two unit matrices are selected such that every element of the top right corner portion of the sum of the two matrices is 0.