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

A receiver for processing broadcasting data, the receiver comprising:

• a first processor configured to process service data;
• and
• a second processor configured to process Layer 1 signaling data for signaling the service data,
• wherein the first processor comprises:
• a first QAM demapper configured to demap constellation values of the service data into cell words;
• a first multiplexer configured to multiplex the demapped cell words into the service data;
• a first bit deinterleaver configured to bit deinterleave the multiplexed service data;
• a first low-density parity-check (LDPC) decoder configured to LDPC decode the bit-deinterleaved service data;
• and
• a first BCH decoder configured to BCH decode the LDPC-decoded service data;
• wherein the second processor comprises:
• a second QAM demapper configured to demap constellation values corresponding to the Layer 1 signaling data into cell words.
• a second multiplexer configured to multiplex the demapped cell words into the Layer 1 signaling data;
• a second bit deinterleaver configured to bit deinterleave the multiplexed Layer 1 signaling data and at least one LDPC parity bit;
• a second de-puncturing element configured to perform de-puncturing on the at least one LDPC parity bit;
• a second LDPC decoder configured to LDPC decode the Layer 1 signaling data and the de-punctured at least one LDPC parity bit;
• and
• a second BCH decoder configured to BCH decode the LDPC-decoded Layer 1 signaling data and the de-punctured at least one LDPC parity bit,
• wherein the Layer 1 signaling data have Program Specific Information (PSI) and Service Information (SI) reprocessing information for each physical path carrying the service data, the PSI/SI reprocessing information indicating whether a PSI/SI reprocessing has been performed.

A method of transmitting broadcasting data to a receiver, the method comprising:

• first processing Layer 1 signaling data for signaling service data;
• and
• second processing the service data,
• wherein the first processing comprises:
• BCH encoding the Layer 1 signaling data;
• low-density parity-check (LDPC) encoding the BCH-encoded Layer 1 signaling data to generate at least one LDPC parity bit;
• performing puncturing on the generated at least one LDPC parity bit;
• bit interleaving the LDPC-encoded Layer 1 signaling data and the punctured at least one LDPC parity bit;
• and
• demultiplexing the bit-interleaved Layer 1 signaling data into cell words;
• and
• mapping the cell words into constellation values by means of a QAM mapping method,
• wherein the second processing comprises:
• BCH encoding the service data to generate an error protected data;
• LDPC encoding the BCH-encoded service data;
• bit interleaving the LDPC-encoded service data;
• demultiplexing the bit-interleaved service data into cell words;
• and
• mapping the cell words into constellation values of the service data,
• wherein the Layer 1 signaling data have Program Specific Information (PSI) and Service Information (SI) reprocessing information for each physical path carrying the service data, the PSI/SI reprocessing information indicating whether a PSI/SI reprocessing has been performed.

A method of receiving broadcasting data, the method comprising:

• first processing service data;
• and
• second processing Layer 1 signaling data for signaling the service data,
• wherein the first processing comprises:
• demapping constellation values of the service data into cell words;
• multiplexing the demapped cell words into the service data;
• bit deinterleaving the multiplexed service data;
• LDPC decoding the bit-deinterleaved service data;
• and
• BCH decoding the LDPC-decoded service data,
• wherein the second processing comprises:
• demapping constellation values corresponding to the Layer 1 signaling data into cell words;
• multiplexing the demapped cell words into the Layer 1 signaling data;
• bit deinterleaving the multiplexed Layer 1 signaling data and at least one LDPC parity bit;
• performing de-puncturing on the at least one LDPC parity bit;
• low-density parity-check (LDPC) decoding the Layer 1 signaling data and the de-punctured at least one LDPC parity bit;
• and
• BCH decoding the LDPC-decoded Layer 1 signaling data and the de-punctured at least one LDPC parity bit,
• wherein the Layer 1 signaling data include Program Specific Information (PSI) and Service Information (SI) reprocessing information for each physical path carrying the service data, the PSI/SI reprocessing information indicating whether a PSI/SI reprocessing has been performed.