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

摘要

A method is provided for receiving a signal. The method includes receiving a signal transmitted in a radio frequency (RF) band including at least one RF channel, demodulating the received signal, parsing a preamble of a signal frame including layer-1 information from the demodulated signal, deinterleaving bits of the layer-1 information, decoding the deinterleaved bits using an error correction decoding scheme including a shortening scheme and a puncturing scheme and obtaining physical layer pipes (PLPs) from the signal frame using the error-correction-decoded layer-1 information.

主权项

1. A method of transmitting broadcast signals, the method comprising:
generating signal data for PLP (Physical Layer Pipe) data carrying at least one service; encoding the generated signal data by using a shortened and punctured LDPC (Low Density Parity Check) scheme; bit interleaving bits of the encoded signal data; encoding the PLP data; mapping the encoded PLP data onto constellations; time interleaving the mapped PLP data; building a signal frame comprising PLP symbols that include the time interleaved PLP data and a preamble that is located at a beginning of the signal frame and includes the bit-interleaved signal data; and transmitting the broadcast signals including the signal frame, wherein the broadcast signals further include emergency message notification information.