Method and device for carrying out channel coding using low density parity check matrix in wireless communication system

A method for receiving an information block based on a low density parity check (LDPC) code in a wireless communication system comprising:

• receiving an encoded information block;
• and
• decoding the information block based on a low density parity check (LDPC) basegraph (H_BG) including
• (
• A_BG
• B_BG
• T_BG
• C_BG
• D_BG
• E_BG
• )
• ,
• wherein each element of the LDPC basegraph (H_BG) is ‘0’ or ‘1’,
• each element ‘0’ from among elements of the LDPC basegraph (H_BG) represents a (Z×Z) zero matrix,
• each element ‘1’ from among elements of the LDPC basegraph (H_BG) represents a (Z×Z) matrix obtained based on a circular permutation matrix that is obtained by cyclic-shifting a (Z×Z) identity matrix to the left or to the right,
• a submatrix (T_BG) is a dual diagonal matrix, and
• a submatrix (D_BG) is a dual diagonal matrix.

A device for transmitting an information block based on a low density parity check (LDPC) code in a wireless communication system comprising:

• a transceiver;
• a memory;
• and
• at least one processor connected to the transceiver and the memory,
• wherein the memory is configured to store instructions causing, when executed, the at least one processor to perform a specific operation,
• wherein the specific operation comprises:
• encoding the information block based on a LDPC basegraph (H_BG) including
• (
• A_BG
• B_BG
• T_BG
• C_BG
• D_BG
• E_BG
• )
• ;
• and
• transmitting the encoded information block,
• wherein each element of the LDPC basegraph (H_BG) is ‘0’ or ‘1’,
• each element ‘0’ from among elements of the LDPC basegraph (H_BG) represents a (Z×Z) zero matrix,
• each element ‘1’ from among elements of the LDPC basegraph (H_BG) represents a (Z×Z) matrix obtained based on a circular permutation matrix that is obtained by cyclic-shifting a (Z×Z) identity matrix to the left or to the right,
• a submatrix (T_BG) of the LDPC basegraph (H_BG) is a dual diagonal matrix, and
• a submatrix (D_BG) of the LDPC basegraph (H_BG) is a dual diagonal matrix.

A device for receiving an information block based on a low density parity check (LDPC) code in a wireless communication system comprising:

• a transceiver;
• a memory;
• and
• at least one processor connected to the transceiver and the memory,
• wherein the memory is configured to store instructions causing, when executed, the at least one processor to perform a specific operation,
• wherein the specific operation comprises:
• receiving an encoded information block;
• and
• decoding the information block based on a LDPC basegraph (H_BG) including
• (
• A_BG
• B_BG
• T_BG
• C_BG
• D_BG
• E_BG
• )
• ,
• wherein each element of the LDPC basegraph (H_BG) is ‘0’ or ‘1’,
• each element ‘0’ from among elements of the LDPC basegraph (H_BG) represents a (Z×Z) zero matrix,
• each element ‘1’ from among elements of the LDPC basegraph (H_BG) represents a (Z×Z) matrix obtained based on a circular permutation matrix that is obtained by cyclic-shifting a (Z×Z) identity matrix to the left or to the right,
• a submatrix (T_BG) is a dual diagonal matrix, and
• a submatrix (D_BG) is a dual diagonal matrix.