Abstract:
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.
Abstract:
The present invention provides a method of transmitting broadcast signals. The method includes, encoding, by an encoder, PLP(Physical Layer Pipe) data; time interleaving, by a time interleaver, the encoded PLP data; frame mapping, by a framer, the time interleaved PLP data onto at least one signal frames; frequency interleaving, by a frequency interleaver, data in the at least one signal frames; and waveform modulating, by a waveform module, the frequency interleaved data in the at least one signal frame and transmitting, by the waveform module, broadcast signals having the modulated data, wherein the frequency interleaving is conducted according to an interleaving mode, wherein the interleaving mode is determined based on a FFT (Fast Fourier Transform) size.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an input formatter for input formatting each data stream divided into a plurality of data transmission path, a generator for generating each of first signaling data and second signaling data, wherein the first signaling data and the second signaling data are processed respectively, wherein the first signaling data includes first information for the second signaling data and the second signaling data includes second information for at least one the data transmission path, wherein the second signaling data includes a static data and a dynamic data, an encoder for encoding, wherein the encoder processing: first encoding service data corresponding to each of the plurality of data transmission path, wherein each of the data transmission path carries at least one service component, second encoding the first signaling data and third encoding the second signaling data, a frame builder for building signal frames, wherein each of signal frames includes the encoded service data and the encoded first signaling data and the encoded second signaling data, a modulator for modulating the signal frames by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals carrying the modulated signal frames.
Abstract:
Disclosed is an apparatus for transmitting a broadcast signal including: an input formatter module configured to de-multiplex an input stream into at least one data pipe (DP); a BICM module configured to perform error correction on data of the at least one DP; a frame building module configured to generate a signal frame including the data of the DP; and an OFDM generation module configured to generate a transmission signal by inserting a preamble into the signal frame and performing OFDM modulation thereon.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder for encoding service data corresponding to each of a plurality of data transmission path, wherein each of the data transmission path carries at least one service component for broadcast services, an encoder for encoding signaling data, wherein the signaling data includes static data and dynamic data, a frame builder for building signal frames, wherein each of signal frames includes the encoded service data and the encoded signaling data, wherein each of signal frames belongs to one of the broadcast services, wherein the static data remain constant in the signal frames belonging to the broadcast service in a duration of a super frame and the dynamic data changes by the signal frames, a modulator for modulating the signal frames by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals carrying the modulated signal frames.
Abstract:
As an aspect of the present invention, an embodiment of the invention provides a method of transmitting broadcast data, the method comprising: encoding transmission units for forward error correction, wherein the transmission units carry the broadcast data which carry a service or service component; mapping the encoded transmission units on constellations; MIMO encoding the mapped transmission units; time-interleaving the MIMO encoded transmission units; building signal frames including the time-interleaved transmission units; modulating the signal frames by Orthogonal Frequency Division Multiplexing, OFDM scheme; and transmitting the modulated signal frames, wherein the transmitted signal frames include preambles, the preambles having physical signaling data for the transmission units.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes encoding data of PLPs (Physical Layer Pips); building at least one signal frame by mapping the encoded data of the PLPs; and modulating data in the built signal frame by OFDM (Orthogonal Frequency Division Multiplexing) method and transmitting the broadcast signals having the modulated data.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. An apparatus for transmitting broadcast signals comprises an encoder for encoding service data corresponding to each of a plurality of data transmission path, wherein each of the data transmission path carries at least one service component, a mapper for mapping the encoded service data onto constellations, an encoder for encoding physical signaling data, a frame builder for building at least one signal frame including preamble data, the encoded physical signaling data, the mapped service data, wherein the preamble data is located before the encoded physical signaling data and the encoded physical signaling data is located before the mapped service data, a modulator for modulating the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals carrying the at least one modulated signal frame, wherein the broadcast signals includes channel information data, wherein the channel information data includes binding information between the service data and the data transmission path.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes processing input streams into BB frames in PLPs; encoding data of the PLPs; building at least one signal frame by mapping the encoded data of the PLPs; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein at least one of the BB frames includes a stuffing field and a first indicator describing whether the stuffing field is included in the BB frame.