Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

摘要

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder to encode service data, a mapper to map the encoded service data, a time interleaver to time interleave the mapped service data, wherein the time interleaving is performed depending on number of physical paths for the service data, a frame builder to build at least one signal frame including the time interleaved service data, a modulator to modulate data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data.

主权项

1. A method for transmitting broadcast signals, the method comprising:
encoding service data; mapping the encoded service data; time interleaving the mapped service data, wherein the time interleaving is performed depending on a number of physical paths for the service data, wherein the number of the physical paths is a multiple, wherein the time interleaving for multiple physical paths includes: block interleaving at least one TI (Time Interleaving) block of the mapped service data in each physical path; and
splitting each TI block into interleaving units and spreading the interleaving units over at least one signal frame; building the at least one signal frame including the time interleaved service data; modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and transmitting the broadcast signals having the modulated data.