CHECK MATRIX GENERATING METHOD, CHECK MATRIX, DECODING APPARATUS, AND DECODING METHOD

摘要

A check matrix generating method of generating a check matrix (H) for decoding coded modulation data, which is encoded by a low-density parity check code and which is modulated by converting a-bit data (wherein a is a natural number) to b-bit data (wherein b is a natural number) wherein a is a modulation symbol unit, the method provided with: a check matrix generating process of generating the check matrix by determining each element such that the number of elements of 1 is less than or equal to one, out of a elements corresponding to data of the same modulation symbol in each of rows which constitute the check matrix.