Apparatus and method for encoding and decoding channel in communication or broadcasting system

A method for a channel decoding performed by an apparatus in a wireless communication system, the method comprising:

• receiving, using a transceiver of the apparatus, a signal;
• determining, using at least one processor of the apparatus, a number of input bits before segmentation from the received signal;
• determining, using the at least one processor of the apparatus, a number of code blocks based on the number of the input bits and a maximum number of information bits corresponding to a largest parity-check matrix;
• determining, using the at least one processor of the apparatus, a size of a code block based on the number of code blocks;
• determining, using the at least one processor of the apparatus, the code block using the input bits and the size of the code block;
• determining, using the at least one processor of the apparatus, a parity-check matrix based on the size of the code block;
• and
• decoding, using a decoder of the apparatus, the code block and padding bits associated with the code block based on the parity-check matrix.

An apparatus for a channel coding in a wireless communication system, the apparatus comprising:

• a transceiver configured to transmit at least a part of an encoded code block;
• at least one processor coupled with the transceiver and configured to:
• identify a number of input bits,
• determine a number of code blocks based on the number of the input bits and a maximum number of information bits corresponding to a largest parity-check matrix,
• determine a size of a code block based on the number of code blocks,
• determine the code block using the input bits and the size of the code block, and
• determine a parity-check matrix based on the size of the code block;
• and
• an encoder configured to:
• encode the code block and padding bits associated with the code block based on the parity-check matrix.

An apparatus for a channel decoding in a wireless communication system, the apparatus comprising:

• a transceiver configured to receive a signal;
• at least one processor coupled with the transceiver and configured to:
• determine a number of input bits before segmentation is applied from the received signal,
• determine a number of code blocks based on the number of the input bits and a maximum number of information bits corresponding to a largest parity-check matrix,
• determine a size of a code block based on the number of code blocks,
• determine the code block using the input bits and the size of the code block, and
• determine a parity-check matrix based on the size of the code block;
• and
• a decoder configured to:
• decode the code block and padding bits associated with the code block based on the parity-check matrix.