Patent ID: 9325438
Filing Date: 2016-04-26
CPC Classification: H04B,H04H,H04L

Claim Text:
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), wherein each of the plurality of PLPs carries at least one service; mapping the encoded data onto constellations; time-interleaving the mapped data; building frames including the time-interleaved data; and Orthogonal Frequency Division Multiplexing (OFDM) modulating data in the built frames; and transmitting the broadcast signals including the modulated data, wherein a frame includes a first symbol and at least one second symbol having signaling information for the frame, 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.