Broadcast-signal transmitter/receiver and method for transmitting/receiving broadcast signals

摘要

The broadcast-signal transmitter according to one embodiment of the present invention includes: an encoder for encoding physical layer pipe (PLP) data, including a base layer and an enhancement layer of a broadcasting service, and signaling information through a SISO, and/or MIMO technique; a frame builder for generating a transmission frame, which includes a preamble having the encoded signaling information and the PLP data and an OFDM generator for modulating and transmitting a broadcast signal including the transmission frame.

主权项

1. A method for transmitting broadcast signals, the method comprising:
encoding data in each of a plurality of Physical Layer Pipes (PLPs) with Forward Error Correction (FEC); building a frame including the encoded data; Orthogonal Frequency Division Multiplexing (OFDM) modulating data in the built frame; and inserting a first symbol and at least one second symbol into the built frame; and transmitting the broadcast signals including the modulated data, the first symbol and the at least one second symbol, wherein the first symbol includes a first portion, an effective portion and a second portion, wherein one of the first portion and the second portion is generated by frequency shifting a part of the effective portion of the first symbol and the at least one second symbol includes a third portion, an effective portion and a fourth portion, wherein one of the third portion and the fourth portion is generated by frequency shifting a part of the effective portion of the at least one second symbol, wherein the built frame comprises one or more subframes, wherein the built frame further includes signaling information indicating whether each subframe of the one or more subframes is Multi-Input Multi-Output (MIMO) encoded or not.