Apparatus and method for transmitting and receiving data in communication/broadcasting system

A method for an operation of a receiver, the method comprising:

• receiving a punctured codeword;
• determining a number of bits punctured in Low Density Parity Check (LDPC) parity bits of the punctured codeword;
• determining a number (Npunc—group) of parity bit groups in which all bits are punctured;
• setting LDPC decoder input values corresponding to all parity bits within 0th to (Npunc—group−1)th parity bit groups in an LDPC codeword indicated by a puncturing pattern by a value representing punctured parity bits;
• and
• setting LDPC decoder input values for the non-punctured remnant parity bits in the LDPC codeword according to reception values of the punctured codeword,
• wherein the puncturing pattern is defined as an order of the parity bit groups defined as 29, 45, 43, 27, 32, 35, 40, 38, 0, 19, 8, 16, 41, 4, 26, 36, 30, 2, 13, 42, 46, 24, 37, 1, 33, 11, 44, 28, 20, 9, 34, 3, 17, 6, 21, 14, 23, 7, 22, 47, 5, 10, 12, 15, 18, 25, 31 and 39.

An apparatus for a transmitter, the apparatus comprising:

• a coding unit for Low Density Parity Check (LDPC)-encoding LDPC information bits to generate a codeword;
• a puncturing unit for determining a number (Npunc) of bits to be punctured in parity bits of the codeword, for determining a number (Npunc—group) of parity bit groups in which all bits are punctured, and for puncturing the all bits within 0th to (Npunc—group−1)th parity bit groups indicated by a puncturing pattern to create a punctured codeword;
• and
• a transmitter for transmitting the punctured codeword,
• wherein the puncturing pattern is defined as an order of the parity bit groups defined as 29, 45, 43, 27, 32, 35, 40, 38, 0, 19, 8, 16, 41, 4, 26, 36, 30, 2, 13, 42, 46, 24, 37, 1, 33, 11, 44, 28, 20, 9, 34, 3, 17, 6, 21, 14, 23, 7, 22, 47, 5, 10, 12, 15, 18, 25, 31 and 39.

An apparatus for a receiver, the apparatus comprising:

• a receiver for receiving a punctured codeword;
• and
• a punctured bit restoring unit for determining a number of bits punctured in Low Density Parity Check (LDPC) parity bits of the punctured codeword, determining a number (Npunc—group) of parity bit groups in which all bits are punctured, setting LDPC decoder input values corresponding to all parity bits within 0th to (Npunc—group-1)th parity bit groups in the LDPC codeword indicated by a puncturing pattern by a value representing punctured parity bits, and for setting LDPC decoder input values for non-punctured remnant parity bits in the LDPC codeword according to reception values of a shortened and punctured codeword,
• wherein the puncturing pattern is defined as an order of the parity bit groups defined as 29, 45, 43, 27, 32, 35, 40, 38, 0, 19, 8, 16, 41, 4, 26, 36, 30, 2, 13, 42, 46, 24, 37, 1, 33, 11, 44, 28, 20, 9, 34, 3, 17, 6, 21, 14, 23, 7, 22, 47, 5, 10, 12, 15, 18, 25, 31 and 39.