Parity interleaving apparatus for encoding variable-length signaling information and parity interleaving method using same

A signaling information transmission apparatus, comprising:

• a parity permutation unit configured to generate a parity bit string for parity puncturing by segmenting parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, into a plurality of bit groups, and by group-wise interleaving the bit groups using an order of group-wise interleaving;
• a parity puncturing unit configured to generate parity punctured parity bits by performing the parity puncturing using the parity bit string;
• a modulation unit configured to perform quadrature phase shift keying (QPSK) modulation for generating a transmission signal by using an input signal corresponding to the parity punctured parity bits;
• and
• an antenna configured to transmit the transmission signal over a physical channel to a reception device,
• wherein the bit groups correspond to 36 bit groups each of which is composed of 360 bits, and the 36 bit groups indexed by 36 integer numbers from 9 to 44,
• wherein the order of group-wise interleaving corresponds to a sequence of 36 numbers which indicate the order of the 36 bit groups, and
• wherein the order of group-wise interleaving corresponds to a sequence [16 22 27 30 37 44 20 23 25 32 38 41 9 10 17 18 21 33 35 14 28 12 15 19 11 24 29 34 36 13 40 43 31 26 39 42].