APPARATUS AND METHOD FOR SENDING AND RECEIVING BROADCAST SIGNALS

摘要

A broadcast signal transmitter is disclosed. A broadcast signal transmitter according to an embodiment of the present invention comprises an input formatting module performing baseband formatting and outputting at least one Physical Layer Pipe (PLP) data; a BICM module error-correction processing the PLP data; a framing & interleaving module interleaving the PLP data and generating a signal frame; and a waveform generating module inserting a preamble into the signal frame and generating a broadcast signal by performing OFDM modulation.

主权项

1. A broadcast signal transmitter comprising:
an input formatting module configured to input process input data and to output at least one PLP (Physical Layer Pipe) data; a BICM (Bit Interleaved Coded Modulation) module configured to perform error correction processing on the PLP data; a framing module configured to generate a signal frame comprising the PLP data; and a waveform generating module configured to OFDM-modulate the signal frame and to generate a transmitting signal, wherein the signal frame comprises a bootstrap, a preamble and at least one subframe, and wherein at least one subframe includes at least one subframe boundary symbol, the subframe boundary symbol being a first symbol or a last symbol of the at least one subframe and the subframe boundary symbol has a greater scattered pilot density than data symbols of the subframe.