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

1. An apparatus for transmitting broadcast signals to a receiver, the apparatus comprising:

a Bose, Chaudhri, Hocquenghem (BCH) encoder to BCH encode Layer 1 signaling data for signaling service data;

a zero inserter to pad the BCH encoded Layer 1 signaling data with at least one zero bit;

a first Low-Density Parity-Check (LDPC) encoder to LDPC encode the zero padded Layer 1 signaling data;

a zero remover to remove the at least one zero bit from the LDPC encoded Layer 1 signaling data;

a first interleaver to interleave the LDPC encoded Layer 1 signaling data from which the at least one zero bit is removed;

a first Quadrature Amplitude Modulation (QAM) mapper to map the interleaved Layer 1 signaling data into constellations;

a second LDPC encoder to LDPC encode the service data;

a second interleaver to interleave the LDPC encoded service data;

a second QAM mapper to map the interleaved service data into constellations;

a time interleaver to time interleave the mapped service data;

a frame builder to build a signal frame including the mapped Layer 1 signaling data and the time-interleaved service data; and

a transmitter to transmit the broadcast signals including the signal frame through Radio Frequencies (RFs), wherein the Layer 1 signaling data include channel bonding information for the broadcast signals and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding.

2. The apparatus of claim 1 , wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

3. The apparatus of claim 2 , wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.

4. A method for transmitting broadcast signals to a receiver, the method comprising:

Bose, Chaudhri, Hocquenghem (BCH) encoding, by a BCH encoder, Layer 1 signaling data for signaling service data;

padding, by a zero inserter, the BCH encoded Layer 1 signaling data with at least one zero bit;

Low-Density Parity-Check (LDPC) encoding, by a first LDPC encoder, the zero padded Layer 1 signaling data;

removing, by a zero remover, the at least one zero bit from the LDPC encoded Layer 1 signaling data;

interleaving, by a first interleaver, the LDPC encoded Layer 1 signaling data from which the at least one zero bit is removed;

Quadrature Amplitude Modulation (QAM) mapping, by a first QAM mapper, the interleaved Layer 1 signaling data into constellations;

LDPC encoding, by a second LDPC encoder, the service data;

interleaving, by a second interleaver, the LDPC encoded service data;

mapping, by a second QAM mapper, the interleaved service data into constellations;

time interleaving, by a time interleaver, the mapped service data;

building, by a frame builder, a signal frame including the mapped Layer 1 signaling data and the time-interleaved service data; and

transmitting, by a transmitter, the broadcast signals including the signal frame through Radio Frequencies (RFs), wherein the Layer 1 signaling data include channel bonding information for the broadcast signals and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding.

5. The method of claim 4 , wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

6. The method of claim 5 , wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.

7. An apparatus for receiving broadcast signals from a transmitter, the apparatus comprising:

a tuner to receive the broadcast signals through Radio Frequencies (RFs), wherein the broadcast signals include a signal frame including service data and Layer 1 signaling data for signaling the service data, wherein the Layer 1 signaling data include channel bonding information for the broadcast signals, and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding;

a frame parser to acquire the signal frame from the received broadcast signals;

a first Quadrature Amplitude Modulation (QAM) demapper to demap the Layer 1 signaling data in the signal frame;

a first deinterleaver to deinterleave the demapped Layer 1 signaling data;

a zero inserter to pad the deinterleaved Layer 1 signaling data with at least one zero bit;

a first Low-Density Parity-Check (LDPC) decoder to LDPC decode the zero padded Layer 1 signaling data;

a zero remover to remove the at least one zero bit from the LDPC decoded Layer 1 signaling data;

a Bose, Chaudhri, Hocquenghem (BCH) decoder to BCH decode the LDPC decoded Layer 1 signaling data from which the at least one zero bit is removed;

a time deinterleaver to time deinterleave the service data in the signal frame;

a second QAM demapper to demap the time-deinterleaved service data;

a second deinterleaver to deinterleave the demapped service data; and

a second LDPC decoder to LDPC decode the deinterleaved service data.

8. The apparatus of claim 7 , wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

9. The apparatus of claim 8 , wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.

10. A method of receiving broadcast signals from a transmitter, the method comprising:

receiving, by a tuner, the broadcast signals through Radio Frequencies (RFs), wherein the broadcast signals include a signal frame including service data and Layer 1 signaling data for signaling the service data, wherein the Layer 1 signaling data include channel bonding information for the broadcast signals, and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding;

acquiring, by a frame parser, the signal frame from the received broadcast signals;

demapping, by a first Quadrature Amplitude Modulation (QAM) demapper, the Layer 1 signaling data in the signal frame;

deinterleaving, by a first deinterleaver, the demapped Layer 1 signaling data;

padding, by a zero inserter, the deinterleaved Layer 1 signaling data with at least one zero bit;

Low-Density Parity-Check (LDPC) decoding, by a first LDPC decoder, the zero padded Layer 1 signaling data;

removing, by a zero remover, the at least one zero bit from the LDPC decoded Layer 1 signaling data;

Bose, Chaudhri, Hocquenghem (BCH) decoding, by a BCH decoder, the LDPC decoded Layer 1 signaling data from which the at least one zero bit is removed;

time deinterleaving, by a time deinterleaver, the service data in the signal frame;

demapping, by a second QAM demapper, the time-deinterleaved service data;

deinterleaving, by a second deinterleaver, the demapped service data; and

LDPC decoding, by a second LDPC decoder, the deinterleaved service data.

11. The method of claim 10 , wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

12. The method of claim 11 , wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.