TRANSMISSION DEVICE, RECEPTION DEVICE, TRANSMISSION METHOD, AND RECEPTION METHOD

摘要

In a transmission device, a determining unit determines, for use in transmission, an LDPC encoding method corresponding to occurrence conditions of external noise from a plurality of LDPC encoding methods each having the same code length and the same code rate and being defined by a different parity check matrix, and an encoding unit generates a codeword bit sequence by encoding transmission data using the LDPC encoding method determined by the determining unit.

主权项

1. A transmission device transmitting transmission data by a transmission scheme selected from a plurality of transmission schemes, the transmission device comprising:
an encoder encoding the transmission data to generate a first codeword bit sequence, the encoding using a low-density parity-check (LDPC) encoding scheme selected from a plurality of LDPC encoding schemes that differ from each other in at least one of code length and code rate; an interleaver interleaving the first codeword bit sequence to generate a second codeword bit sequence, the interleaving using an interleaving pattern selected from a plurality of predefined interleaving patterns that are bit rearrangement rules that differ from each other; a modulator mapping the second codeword bit sequence to generate a plurality of modulation symbols, the mapping using a modulation scheme selected from a plurality of modulation schemes that differ from each other; and a transmitter transmitting a transmission signal including a plurality of control symbols and the plurality of modulation symbols, the control symbols being generated from control information that includes first information indicating the LDPC encoding scheme, second information indicating the interleaving pattern, and third information indicating the modulation scheme, wherein the transmission schemes include a first transmission scheme and a second transmission scheme that uses the same LDPC encoding scheme and modulation scheme as the first transmission scheme and uses a different interleaving pattern to the first transmission scheme.