TRANSMITTING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF

摘要

A transmitting apparatus and a receiving apparatus are provided. The transmitting apparatus includes an encoder configured to generate a low density parity check (LDPC) codeword by performing LDPC encoding, an interleaver configured to interleave the LDPC codeword, and a modulator configured to modulate the interleaved LDPC codeword according to a modulation method to generate a modulation symbol. The interleaver performs interleaving by dividing the LDPC codeword into a plurality of groups, rearranging an order of the plurality of groups in group units, and dividing the plurality of rearranged groups based on a modulation order according to the modulation method.

主权项

1. An interleaving method of a transmitting apparatus, the method comprising:
encoding input bits to generate parity bits; splitting a codeword comprising the input bits and the parity bits into a plurality of bit groups; interleaving the plurality of bit groups; interleaving the interleaved plurality of bit groups using a plurality of containers to provide an interleaved codeword, each of the plurality of containers comprising a first part and a second part; mapping the interleaved codeword onto constellation points, and transmitting at least one of the constellation points, wherein a number of bits to be written in the first part is determined based on a number of the plurality of containers and a number of bits of each of the plurality of bit groups, and wherein a number of bits to be written in the second part is determined based on the number of the plurality of containers and the number of the bits of each of the plurality of bit groups.