Apparatus and method for sending and receiving broadcast signals
A device for processing a broadcast signal, includes a tuner configured to receive the broadcast signal carrying a bootstrap prefixed to the beginning of a signal frame, the bootstrap including one or more bootstrap symbols, a last bootstrap symbol immediately followed by a preamble of the signal frame including bootstrap termination information, the bootstrap including first information for representing a structure of the preamble; a demodulator configured to demodulate the broadcast signal; a de-framer configured to de-frame the signal frame in the broadcast signal to output the preamble and PLP data, the preamble carrying Layer 1 (L1) signaling data for the signal frame; a signaling decoder configured to decode the L1 signaling data; and a decoder to decode the PLP data based on the L1 signaling data.
1. A device for processing a broadcast signal, comprising:
a tuner configured to receive the broadcast signal carrying a bootstrap prefixed to the beginning of a signal frame,
the bootstrap including one or more bootstrap symbols, a last bootstrap symbol immediately followed by a preamble of the signal frame including bootstrap termination information, the bootstrap including first information for representing a structure of the preamble;
a demodulator configured to demodulate the broadcast signal;
a de-framer configured to de-frame the signal frame in the broadcast signal to output the preamble and physical layer pipe (PLP) data, the preamble carrying Layer 1 (L1) signaling data for the signal frame, wherein:
the preamble includes a plurality of preamble symbols,
a foremost preamble symbol of the preamble symbols includes second information for indicating a number of remaining preamble symbols, and
the foremost preamble symbol uses a minimum number of carriers (NoC) and the foremost preamble symbol further includes third information related to NoC for the remaining preamble symbols;
a signaling decoder configured to decode the L1 signaling data; and
a decoder to decode the PLP data based on the L1 signaling data.
2. The device of claim 1 , wherein:
the PLP data is multiplexed in time or frequency.
3. The device of claim 1 , wherein:
the first information represents a separation of pilots in a frequency direction (Dx) of the preamble.
4. A method for processing a broadcast signal, comprising:
receiving the broadcast signal carrying a bootstrap prefixed to the beginning of a signal frame,
the bootstrap including one or more bootstrap symbols, a last bootstrap symbol immediately followed by a preamble of the signal frame including bootstrap termination information, the bootstrap including first information for representing a structure of the preamble;
demodulating the broadcast signal;
de-framing the signal frame in the broadcast signal to output the preamble and physical layer pipe (PLP) data, the preamble carrying Layer 1 (L1) signaling data for the signal frame, wherein:
the preamble includes a plurality of preamble symbols,
a foremost preamble symbol of the preamble symbols includes second information for indicating a number of remaining preamble symbols, and
the foremost preamble symbol uses a minimum number of carriers (NoC) and the foremost preamble symbol further includes third information related to NoC for the remaining preamble symbols;
decoding the L1 signaling data; and
decoding the PLP data based on the L1 signaling data.
5. The method of claim 4 , wherein:
the PLP data is multiplexed in time or frequency.
6. The method of claim 4 , wherein:
the first information represents a separation of pilots in a frequency direction (Dx) of the preamble.