Patent ID: 7752521
Filing Date: 2010-07-06
Classification: H03M

Abstract:
1. A method for constructing a low-density parity-check (LDPC) code having a structured parity check matrix, the method comprising the steps of: constructing, in a computer processor, a base parity check matrix H=[H expanding the base parity check matrix into an expanded parity check matrix by replacing each non-zero element of the plurality of elements by a shifted identity matrix; and each zero element of the plurality of elements by a zero matrix; wherein the base parity check matrix has a coding rate selected from the group consisting of R=½, ⅔, ¾, ⅚, and ⅞; and accordingly is of the size selected from the group consisting of 12×24, 8×24, 6×24, 4×24, and 3×24.