Method and device for encoding and decoding data in communication or broadcasting system

A method performed by a receiver in a communication system, the method comprising:

• receiving a signal;
• determining a number of input bits, based on the signal;
• determining a base matrix, based on the number of the input bits;
• determining a lifting size (Z), based on at least one of the number of the input bits or the base matrix;
• determining a parity check matrix, based on at least one of the base matrix or the lifting size (Z);
• and
• performing decoding of the signal, based on the parity check matrix,
• wherein the parity check matrix comprises a core matrix comprising a first submatrix corresponding to the input bits and a second submatrix corresponding to first parity bits and comprising a column block having a weight of 2 or greater, and
• wherein a number of column blocks included in the core matrix comprising only one Z×Z circulant permutation matrix or one circulant matrix is at most 1, or
• in a case that the number of column blocks included in the core matrix comprising only one Z×Z circulant permutation matrix or one circulant matrix is two or more, the Z×Z circulant permutation matrices or the circulant matrices included in the two or more column blocks are included in different row blocks.

A transmitter in a communication system, the transmitter comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• determine a number of input bits;
• determine a base matrix, based on the number of the input bits;
• determine a lifting size (Z), based on at least one of the number of the input bits or the base matrix;
• determine a parity check matrix, based on at least one of the base matrix or the lifting size (Z);
• and
• perform encoding, based on the parity check matrix and the input bits,
• wherein the parity check matrix comprises a core matrix comprising a first submatrix corresponding to the input bits and a second submatrix corresponding to first parity bits and comprising a column block having a weight of 2 or greater, and
• wherein a number of column blocks included in the core matrix comprising only one Z×Z circulant permutation matrix or one circulant matrix is at most 1, or
• in case that the number of column blocks included in the core matrix comprising only one Z×Z circulant permutation matrix or one circulant matrix is two or more, the Z×Z circulant permutation matrices or the circulant matrices included in the two or more column blocks are included in different row blocks.

A receiver in a communication system, the receiver comprising:

• a transceiver;
• and
• a controller, comprising processing circuitry, coupled with the transceiver and configured to:
• receive a signal;
• determine a number of input bits, based on the signal;
• determine a base matrix, based on the number of the input bits;
• determine a lifting size (Z), based on at least one of the number of the input bits or the base matrix;
• determine a parity check matrix, based on at least one of the base matrix or the lifting size (Z);
• and
• perform decoding of the signal, based on the parity check matrix,
• wherein the parity check matrix comprises a core matrix comprising a first submatrix corresponding to the input bits and a second submatrix corresponding to first parity bits and having a column block of weight of 2 or greater, and
• wherein a number of column blocks included in the core matrix comprising only one Z×Z circulant permutation matrix or one circulant matrix is at most 1, or
• in a case that the number of column blocks included in the core matrix comprising only one Z×Z circulant permutation matrix or one circulant matrix is two or more, the Z×Z circulant permutation matrices or the circulant matrices included in the two or more column blocks are included in different row blocks.