Digital broadcasting system and method of processing data in digital broadcasting system

A transmitter for processing broadcast data, the transmitter comprising:

• an encoder for encoding mobile service data of a path, the path carrying one or multiple services;
• a first signaling data encoder for first encoding first signaling data and second encoding the first-encoded first signaling data, wherein the first signaling data include information to enable fast service acquisition;
• a second signaling data encoder for first encoding second signaling data and second encoding the first-encoded second signaling data, wherein the second signaling data include information to identify the path;
• and
• a transmitting unit for transmitting a broadcast signal including the encoded mobile service data, the second-encoded first signaling data and the second-encoded second signaling data,
• wherein the mobile service data are included in a payload of a data packet having a header, the header being compressed.