Apparatus for transmitting a broadcast signal, apparatus for receiving a broadcast signal, and method for transmitting/receiving a broadcast signal using an apparatus for transmitting/receiving a broadcast signal

A method of processing broadcast data in a transmitter, the method comprising:

• Forward Error Correction (FEC) encoding Physical Layer Pipe (PLP) data at a first code rate;
• FEC encoding first signaling data at a second code rate;
• FEC encoding second signaling data at a third code rate;
• time interleaving the FEC-encoded PLP data;
• frequency interleaving the time-interleaved PLP data by a pair of consecutive cells;
• and
• modulating the frequency-interleaved PLP data, the FEC-encoded first signaling data, and the FEC-encoded second signaling data by an Orthogonal Frequency Division Multiplexing (OFDM) method,
• wherein the first signaling data include FEC type information of the second signaling data and wherein the second signaling data include FEC type information and the first code rate used by the PLP data.

A transmitter for processing broadcast data, the transmitter comprising:

• a first encoder for Forward Error Correction (FEC) encoding Physical Layer Pipe (PLP) data at a first code rate;
• a second encoder for FEC encoding first signaling data at a second code rate;
• a third encoder for FEC encoding second signaling data at a third code rate;
• a time interleaver for time interleaving the FEC-encoded PLP data;
• a frequency interleaver for frequency interleaving the time-interleaved PLP data by a pair of consecutive cells;
• and
• a modulator for modulating the frequency-interleaved PLP data, the FEC-encoded first signaling data, and the FEC-encoded second signaling data by an Orthogonal Frequency Division Multiplexing (OFDM) method,
• wherein the first signaling data include FEC type information of the second signaling data and wherein the second signaling data include FEC type information and the first code rate used by the PLP data.