Abstract:
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.
Abstract:
Disclosed is a method for transmitting broadcast signals, including: formatting input streams to a plurality of data pipes (DPs), wherein the formatting comprises allocating data packets to a payload of a baseband frame (BBF), and adding a header indicating a format of the payload of the baseband frame, and the header comprises at least one of first control information and second control information.
Abstract:
The present invention provides a method of transmitting broadcast signals. The method includes, processing input streams into plural PLPs; encoding data of the each PLPs according to code rates, wherein the encoding data of the each PLPs further includes, encoding data of at least one PLP with LDPC codes, bit interleaving the LDPC encoded data of the PLP, mapping the bit interleaved data onto a set of constellations according to the code rate, MIMO encoding the mapped data, and time interleaving the MIMO encoded data; building at least one signal frame by mapping the encoded data of the each PLPs; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein the bit interelaved data of each PLPs are mapped by using either QAM, NUQ, or NUC.
Abstract:
An apparatus includes an encoder to encode service data corresponding to each of a plurality of Physical Layer Pipes, an encoder to encode signaling data by performing LDPC (Low Density Parity Check) encoding the signaling data by adding parity bits, block interleaving the LDPC encoded signaling data, and demultiplexing the block interleaved signaling data using shifting method. The shifting method is performed based on the modulation order and indices of bits. A frame builder builds at least one signal frame including the encoded service data, the encoded signaling data, a modulator modulates the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme, and a transmitter transmits the broadcast signals carrying the at least one modulated signal frame.
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 corresponding to a number of physical paths, a time interleaver to time interleave the encoded service data in each physical path, 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 transmitting the broadcast signals having the modulated data.
Abstract:
Disclosed is a method for transmitting broadcast signals, including: formatting input streams to a plurality of data pipes (DPs), wherein the formatting comprises allocating data packets to a payload of a baseband frame (BBF), and adding a header indicating a format of the payload of the baseband frame, and the header comprises at least one of first control information and second control information.
Abstract:
Disclosed herein is a method for sending a broadcast signal. The method includes formatting input streams into multiple data pipes (DPs). Formatting the input streams into the multiple DPs includes splitting the input streams into multiple data streams, deleting a null packet included in a data stream, and forming a baseband frame (BBF) by adding a header to the data stream. The baseband frame includes a deleted null packet (DNP) field indicative of the number of deleted null packets, and the DNP field comprises at least one of a first DNP or a second DNP.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder encoding service data, a time interleaver interleaving the encoded service data, a mapper mapping the interleaved service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver 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, wherein the frequency interleaving is performed by using two memories, a modulator modulating the frequency interleaved data by an OFDM scheme and a transmitter transmitting the broadcast signals having the modulated data, wherein an interleaving-seed is generated based on a cyclic shift value and an FFT size of the modulating.
Abstract:
Disclosed is a broadcasting signal transmission device, a broadcasting signal reception device, and a method for transmitting/receiving a broadcasting signal using same. The method for receiving the broadcasting signal comprises the following steps: receiving the broadcasting signal, which includes a transmission frame, wherein the transmission frame includes a plurality of PLPs, which transmit components that constitute a broadcasting service, first signaling information and second signaling information, which include the signaling information of the plurality of PLPs, a first preamble signal, which has been signaled with a preamble format, and a second preamble signal, which has been signaled with pilot pattern information, wherein one of the plurality of PLPs is a base PLP, which includes a program number that corresponds to the broadcasting service and program map table information, which has been signaled with identifying information for each of the PLPs; demodulating the broadcasting signal based on the first and the second preamble signals; FEC decoding the demodulated broadcasting signal; and identifying a PLP group that includes the plurality of PLP from the FEC decoded broadcasting signal based on the first and the second signaling information, decoding at least one PLP of the identified PLP group, and providing the broadcasting service.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes encoding PLP data; building at least one signal frame by mapping the encoded PLP data; and modulating data in the built signal frame by OFDM method and transmitting a broadcast signal having the modulated data, wherein the signal frame includes a preamble having a preamble symbol and a guard interval, wherein the guard interval is generated by using a sequence and the preamble symbol.