Broadcasting signal transmitter/receiver and broadcasting signal transmission/reception method

An apparatus for transmitting broadcast signals, wherein the apparatus comprising:

• an input processor to input process input streams to generate data of PLP (Physical Layer Pipe)s carrying at least one service or service components;
• an LDPC (Low Density Parity Check) encoder to encode on the data by an LDPC scheme;
• a mapper to map the LDPC encoded data onto constellations based on a symbol mapping type;
• a MIMO (Multiple-Input Multiple-Output) processor to process the mapped data based on a MIMO matrix with a parameter, wherein the parameter depends on the symbol mapping type;
• a time interleaver to time interleave the MIMO processed data;
• a frame builder to build at least one signal frame, wherein each signal frame comprises a preamble including signaling information for PLPs and data symbols including the time interleaved data;
• a modulator to modulate data in the built at least one signal frame by using an OFDM (Orthogonal Frequency Divisional Multiplexing Scheme);
• and
• a transmitter to transmit the broadcast signals including the modulated data,
• wherein the least one signal frame includes first layer information which includes identifiers of the PLPs including a first PLP,
• wherein the least one signal frame includes a second PLP that carries second layer information and the first PLP carries information for mapping between a PLP and components of a service which is described in the second layer information,
• wherein the information for mapping includes PLP identification information,
• wherein the first PLP is different from the second PLP, and
• wherein the least one signal frame includes information for identifying whether the first PLP carries a service signaling table describing the service.

A method for receiving broadcast signals by a receiver, wherein the method comprising:

• receiving the broadcast signals;
• demodulating the received broadcast signals by using an OFDM (Orthogonal Frequency Divisional Multiplexing Scheme);
• parsing at least one signal frame from the demodulated broadcast signals,
• wherein the least one signal frame includes first layer information which includes identifiers of Physical Layer Pipes (PLPs) including a first PLP,
• wherein the least one signal frame includes a second PLP that carries second layer information and the first PLP carries information for mapping between a PLP and components of a service which is described in the second layer information,
• wherein the information for mapping includes PLP identification information,
• wherein each signal frame comprises a preamble including signaling information for the PLPs and data symbols including data of the PLPs carrying at least one service or service components,
• wherein the first PLP is different from the second PLP, and
• wherein the least one signal frame includes information for identifying whether the first PLP carries a service signaling table describing the service;
• time de-interleaving the data in the data symbols;
• MIMO (Multiple-Input Multiple-Output) processing the time de-interleaved data based on a MIMO matrix with a parameter, wherein the parameter depends on a symbol mapping type;
• de-mapping the MIMO processed data based on the symbol mapping type;
• LDPC (Low Density Parity Check) decoding on the de-mapped data by an LDPC scheme;
• and
• output processing LDPC decoded data.

An apparatus for receiving broadcast signals, wherein the apparatus comprising:

• a receiver to receive the broadcast signals;
• a demodulator to demodulate the received broadcast signals by using an OFDM (Orthogonal Frequency Divisional Multiplexing Scheme);
• a frame parser to parse at least one signal frame from the demodulated broadcast signals, wherein the least one signal frame includes first layer information which includes identifiers of Physical Layer Pipes (PLPs) including a first PLP,
• wherein the least one signal frame includes a second PLP that carries second layer information and the first PLP carries information for mapping between a PLP and components of a service which is described in the second layer information,
• wherein the information for mapping includes PLP identification information,
• wherein a signal frame comprises a preamble including signaling information for the PLPs and data symbols including data of the PLPs carrying at least one service or service components,
• wherein the first PLP is different from the second PLP, and
• wherein the least one signal frame includes information for identifying whether the first PLP carries a service signaling table describing the service;
• a time de-interleaver to time de-interleave the data in the data symbols;
• a MIMO (Multiple-Input Multiple-Output) processor to MIMO process the time de-interleaved data based on a MIMO matrix with a parameter, wherein the parameter depends on a symbol mapping type;
• a de-mapper to de-map the MIMO processed data based on the symbol mapping type;
• an LDPC (Low Density Parity Check) decoder to decode on the de-mapped data by an LDPC scheme;
• and
• an output processor to output process LDPC decoded data.