Patent ID: 11881870
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A low-density parity-check (LDPC) code encoding method, comprising:
performing, based on a first check matrix, low-density parity-check (LDPC) code encoding on an information bit sequence to obtain a first codeword at a first code rate, wherein:
the first check matrix is obtained by reading i rows and j columns from a mother matrix,
the mother matrix comprises: a basic matrix, an extension matrix, a first fixed matrix, and a second fixed matrix,
the basic matrix is located at a top-left corner of the mother matrix,
the extension matrix is located at a bottom-left corner of the mother matrix,
the first fixed matrix is located at a top-right corner of the mother matrix,
the second fixed matrix is located at a bottom-right corner of the mother matrix,
a quantity of rows in the basic matrix is equal to a quantity of rows in the first fixed matrix,
a quantity of rows in the extension matrix is equal to a quantity of rows in the second fixed matrix,
a quantity of columns in the extension matrix is equal to a quantity of columns in the basic matrix,
a quantity of columns in the first fixed matrix is equal to a quantity of columns in the second fixed matrix,
i=p+k, j=q+k, p and q are respectively the quantity of rows and the quantity of columns in the basic matrix,
k≥0, and
j, p, q, and k are all integers; and

sending the first codeword.