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

Claim 10:
11. A communication apparatus, comprising:
a processing unit, configured to perform, 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
i, j, p, q, and k are all integers; and

a transceiver unit, configured to send the first codeword.