Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal

摘要

A method of transmitting a broadcasting signal is provided. The method includes encoding data; encoding signaling data by an LDPC (Low Density Parity Check) scheme; building a signal frame based on at least one preamble data symbol having the encoded signaling data and a data slice having the encoded data; inserting at least one pilot into the signal frame with a specific pattern and modulating the signal frame by an OFDM (Orthogonal Frequency Division Multiplexing) method; and transmitting the modulated signal frame. A signaling block having the signaling data is repeated in the at least one preamble data symbol in a frequency domain by a bandwidth. The bandwidth of the signaling block corresponds to a number of active subcarriers assigned to a single channel.

主权项

1. A method of transmitting broadcast signals, the method comprising:
encoding signaling data by an LDPC (Low Density Parity Check) scheme; encoding data by at least one code rate; mapping the encoded data onto constellations using non-uniform constellations; building at least one signal frame including at least one preamble data symbol having the encoded signaling data and data symbols having the mapped data; inserting at least one pilot into each of the built at least one signal frame with a specific pattern and modulating the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplexing) method; and transmitting broadcast signals having the modulated at least one signal frame, wherein the signaling data includes channel bonding information for the broadcast signals and wherein the channel bonding information includes information about a number of frequencies and identification information for identifying a channel used in channel bonding.