Method and apparatus for encoding and decoding LDPC codes

A method for wireless communication, comprising:

• obtaining a sequence of information bits to be encoded;
• and
• encoding the sequence of information bits using a matrix;
• wherein:
• the matrix is determined according to a base matrix,
• the base matrix comprises multiple rows and columns, the multiple columns comprising at least one punctured column and multiple non-punctured columns,
• the multiple rows comprise a first set of rows and a second set of rows,
• the second set of rows comprises at least one group, each of the at least one group comprises at least two consecutive rows,
• the at least two consecutive rows consisting of a first part and a second part in terms of columns,
• the first part being a portion of the at least one punctured column, and rows of the first part being non-orthogonal, and
• the second part being a portion of the non-punctured columns, and rows of the second part being orthogonal.

An apparatus for wireless communication, comprising:

• at least one processor configured to decode a sequence of information bits using a matrix;
• wherein:
• the matrix is determined according to a base matrix,
• the base matrix comprises multiple rows and multiple columns,
• the multiple columns comprise at least one punctured column and multiple non-punctured columns,
• the multiple rows comprise a first set of rows and a second set of rows,
• the second set of rows comprise at least one group, each of the at least one group comprising at least two consecutive rows,
• the at least two consecutive rows consisting of a first part and a second part in terms of columns,
• the first part being a portion of the at least one punctured column, and rows of the first part being non-orthogonal, and
• the second part being a portion of the non-punctured columns, and rows of the second part being orthogonal.

A non-transitory computer-readable storage medium, storing instructions, which when run on a computer, configure the computer to perform steps comprising:

• obtaining a sequence of information bits to be encoded;
• and
• encoding the sequence of information bits using a matrix;
• wherein:
• the matrix is determined according to a base matrix,
• the base matrix comprises multiple rows and columns,
• the multiple columns comprising at least one punctured column and multiple non-punctured columns,
• the multiple rows comprising a first set of rows and a second set of rows,
• the second set of rows comprises at least one group, each of the at least one group comprising at least two consecutive rows,
• the at least two consecutive rows consisting of a first part and a second part in terms of columns,
• the first part being a portion of the at least one punctured column, and rows of the first part being non-orthogonal, and
• the second part being a portion of the non-punctured columns, and rows of the second part being orthogonal.