Broadcast signal transmission apparatus using multiple transmission antennas and channel bonding, and method using same

Abstract

Disclosed are a broadcast signal transmission apparatus using multiple transmission antennas and channel bonding, and a method using same. According to an embodiment of the present invention, the broadcast signal transmission apparatus comprises: a first cell exchanger that performs cell exchange on a multi-input multi-output (MIMO) precoded first polarization input pair (s2i,1, s2i,2) (where i is an integer greater than or equal to 0), to generate a first exchange output pair (g2i,1, g2i,2); a second cell exchanger that performs cell exchange on a MIMO precoded second polarization input pair (s2i+1,1, s2i+1,2), to generate a second exchange output pair (g2i+1,1, g2i+1,2); a first RF unit that uses a first output (g2i,1) of the first exchange output pair and a first output (g2i+1,1) of the second exchange output pair to generate first RF MIMO signals; and a second RF unit that uses a second output (g2i,2) of the first cell exchanger and a second output (g2i+1,2) of the second cell exchanger to generate second RF MIMO signals.

Description

Broadcast signal transmission device using multiple transmission antennas and channel bonding and method using the same

[0001] The present invention relates to a channel bonding technology for a broadcasting system, and more particularly, to a broadcasting signal transmission / reception system that simultaneously supports channel bonding technology and MIMO (Multi-Input Multi-Output) technology.

[0002] To address the growing demand for ultra-high-definition broadcasting services, efficient use of frequency resources, and the integration of services requiring diverse regions and reception environments, technologies and standards for next-generation terrestrial broadcasting systems have recently been introduced. However, the growing demand for higher resolutions, hyper-realistic media such as AR (Artificial Reality) and VR (Virtual Reality), and additional data for enhanced user experiences, coupled with the lack of idle frequency resources due to the simultaneous provision of existing broadcasting services, necessitates further improvements in the transmission rates of terrestrial broadcasting systems.

[0003] The latest terrestrial digital broadcasting standards, such as ATSC 3.0, attempt to overcome the transmission capacity limitations of a single broadcast frequency by applying multiple antenna technologies such as MIMO (Multiple Input Multiple Output) or the limitations of a single channel by applying channel bonding technology. Multiple antenna technology secures spatial physical resources by using two or more antennas for transmission, reception, or both, while channel bonding combines two or more unit channels and treats them as a single channel. Therefore, both technologies can be seen as methods to overcome the limitations of the transmission capacity of generally provided terrestrial broadcasting, and can be applied to service ultra-high definition images exceeding 4K resolution or multiple 4K resolution images.

[0004] Korean Patent Publication Nos. 10-2023-0130517 and 10-2023-0130532 propose a structure for combining MIMO technology and channel bonding technology for transmitting / receiving broadcast signals.

[0005] However, channel bonding may be applied to an SNR averaging method that performs cell exchange, which exchanges cells for multiple RF channels, and the above-mentioned public patents do not propose an optimal structure combining MIMO technology and channel bonding technology for cases where cell exchange is applied, and are completely silent about signaling for cell exchange.

[0006] Therefore, there is an urgent need for a new technology to efficiently combine MIMO technology and channel bonding technology even when SNR averaging is applied, and to efficiently signal signaling information related to cell exchange when MIMO technology and channel bonding are combined.

[0007] An object of the present invention is to provide a novel transmitter structure capable of efficiently combining MIMO technology and channel bonding technology even when SNR averaging is applied.

[0008] Additionally, an object of the present invention is to efficiently signal signaling information related to cell exchange when MIMO technology and channel bonding are combined.

[0009] In addition, an object of the present invention is to enable efficient setting of the time interleaver memory size when MIMO technology and channel bonding technology are combined.

[0010] In addition, it is an object of the present invention to efficiently set and signal MIMO precoding parameters when MIMO technology and channel bonding technology are combined.

[0011] In order to achieve the above-mentioned purpose, the broadcast signal transmission device according to the present invention comprises a MIMO (Multi-Input Multi-Output) precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0) to perform a cell exchange to obtain the first exchange output pair (g 2i,1 , g 2i,2 ) generating a first cell exchanger; a second polarization input pair (s) with MIMO precoded 2i+1,1 , s 2i+1,2 ) to perform a cell exchange on the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) generating a second cell exchanger; the first output (g) of the first exchange output pair 2i,1 ) and the first output (g) of the second exchange output pair 2i+1,1 ) to generate first RF MIMO signals corresponding to the first RF (Radio Frequency); and a second output (g) of the first cell exchanger 2i,2 ) and the second output (g) of the second cell exchanger 2i+1,2 ) and a second RF unit that generates second RF MIMO signals corresponding to a second RF (Radio Frequency).

[0012] At this time, the first cell exchanger can output the precoded first polarization input pair as the first exchange output pair if the precoded first polarization input pair is an even number (i is 0 or an even number), and the second cell exchanger can output the precoded second polarization input pair as the second exchange output pair if the precoded second polarization input pair is an even number (i is 0 or an even number).

[0013] At this time, the first cell exchanger can output the first exchange output pair by crossing the first precoded polarization input pair when the first precoded polarization input pair is odd (i is odd), and the second cell exchanger can output the second exchange output pair by crossing the second precoded polarization input pair when the second precoded polarization input pair is odd (i is odd).

[0014] At this time, the first cell exchanger and the second cell exchanger each correspond to a cell exchange matrix, and the cell exchange matrix corresponding to the first cell exchanger and the cell exchange matrix corresponding to the second cell exchanger may be the same.

[0015] At this time, the first cell exchanger and the second cell exchanger operate based on at least one of a channel bonding format field included in L1 signaling information for the first RF and a channel bonding format field included in L1 signaling information for the second RF, and the channel bonding format field can indicate one of a plain channel bonding mode and an SNR averaging channel bonding mode with 2 bits.

[0016] At this time, the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF may be set to be the same.

[0017] At this time, the time interleaver corresponding to the first exchange output pair and the second exchange output pair can correspond to a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement of SISO (Single-Input Single-Output) applied to a single RF channel.

[0018] At this time, the first cell exchanger and the second cell exchanger are activated when the SNR averaging channel bonding mode is applied, and when the SNR averaging channel bonding mode is applied, the first input (s) of the MIMO precoded first polarization input pair 2i,1 ) and the first input (s) of the second polarization input pair of the MIMO precoded 2i+1,1 ) and a second input (s) of the MIMO precoded first polarization input pair. 2i,2 ) and the second input (s) of the second polarization input pair of the MIMO precoded 2i+1,2 ) can be the same.

[0019] In addition, a broadcast signal generation method for generating a broadcast signal when the channel bonding mode according to one embodiment of the present invention is an SNR averaging mode, comprises a MIMO (Multi-Input Multi-Output) precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0) to perform a cell exchange for the first exchange output pair (g 2i,1 , g 2i,2 ) generating a MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) to perform a cell exchange for the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) generating a first RF MIMO signal and a second RF MIMO signal transmitted through a first antenna unit and a second antenna unit using the first exchange output pair and the second exchange output pair.

[0020] At this time, the first exchange output pair may be set to be identical to the precoded first polarization input pair when the precoded first polarization input pair is an even number (i is 0 or even), and the second exchange output pair may be set to be identical to the precoded second polarization input pair when the precoded second polarization input pair is an even number (i is 0 or even).

[0021] At this time, the first exchange output pair may be set by crossing the first precoded polarization input pair when the first precoded polarization input pair is odd (i is odd), and the second exchange output pair may be set by crossing the second precoded polarization input pair when the second precoded polarization input pair is odd (i is odd).

[0022] At this time, the step of generating the first exchange output pair and the step of generating the second exchange output pair each correspond to a cell exchange matrix, and the cell exchange matrix corresponding to the step of generating the first exchange output pair and the cell exchange matrix corresponding to the step of generating the second exchange output pair may be the same.

[0023] At this time, the first RF MIMO signals correspond to the first RF, the second RF MIMO signals correspond to the second RF, and the step of generating the first exchange output pair and the step of generating the second exchange output pair operate based on at least one of a channel bonding format field included in L1 signaling information for the first RF and a channel bonding format field included in L1 signaling information for the second RF, respectively, and the channel bonding format field can indicate one of a plain channel bonding mode and an SNR averaging channel bonding mode with 2 bits.

[0024] At this time, the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF may be set to be the same.

[0025] At this time, the time interleaver corresponding to the first exchange output pair and the second exchange output pair can correspond to a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement of SISO (Single-Input Single-Output) applied to a single RF channel.

[0026] At this time, when the SNR averaging channel bonding mode is applied, the first input (s) of the MIMO precoded first polarization input pair 2i,1 ) and the first input (s) of the second polarization input pair of the MIMO precoded 2i+1,1 ) and a second input (s) of the MIMO precoded first polarization input pair. 2i,2 ) and the second input (s) of the second polarization input pair of the MIMO precoded 2i+1,2 ) can be the same MIMO settings.

[0027] In addition, in one embodiment of the present invention, a method for receiving a broadcast signal includes the steps of: receiving first RF MIMO (Multi-Input Multi-Output) signals corresponding to a first RF and second RF MIMO signals corresponding to a second RF using a first polarization and a second polarization; restoring a first preamble and a second preamble using the first RF MIMO signals and the second RF MIMO signals; and performing a reverse process of a cell exchange based on a channel bonding format field corresponding to the first preamble and the second preamble.

[0028] At this time, the channel bonding format field corresponding to the first preamble and the channel bonding format field corresponding to the second preamble may be set identically.

[0029] At this time, the time interleaver corresponding to the first RF MIMO signals and the second RF MIMO signals can correspond to a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement of SISO (Single-Input Single-Output) applied to a single RF channel.

[0030] At this time, the MIMO precoded first polarization input pair (s) corresponding to the first polarization 2i,1 , s 2i,2 )'s first input (s) 2i,1 ) and a MIMO precoded second polarization input pair (s) corresponding to the second polarization 2i+1,1 , s 2i+1,2 )'s first input (s) 2i+1,1 ) and a MIMO precoded first polarization input pair (s) corresponding to the first polarization. 2i,1 , s 2i,2 ) second input (s) 2i,2 ) and a MIMO precoded second polarization input pair (s) corresponding to the second polarization 2i+1,1 , s 2i+1,2 ) second input (s) 2i+1,2 ) can be the same when SNR averaging channel bonding mode is applied.

[0031] According to the present invention, a new transmitter structure capable of efficiently combining MIMO technology and channel bonding technology can be provided even when SNR averaging is applied.

[0032] In addition, the present invention can efficiently signal signaling information related to cell exchange when MIMO technology and channel bonding are combined.

[0033] In addition, the present invention can efficiently set the time interleaver memory size when MIMO technology and channel bonding technology are combined.

[0034] In addition, the present invention can efficiently set and signal MIMO precoding parameters when MIMO technology and channel bonding technology are combined.

[0035] Figure 1 is a block diagram showing an example of a broadcast signal transmission device using multiple transmission antennas and channel bonding.

[0036] Fig. 2 is a block diagram showing an example of the MIMO precoding unit illustrated in Fig. 1.

[0037] FIG. 3 is a block diagram showing an example of the first cell exchanger illustrated in FIG. 1.

[0038] FIG. 4 is a block diagram showing an example of the second cell exchanger illustrated in FIG. 1.

[0039] Fig. 5 is a block diagram showing another example of a broadcast signal transmission device using multiple transmission antennas and channel bonding.

[0040] FIG. 6 is a flowchart illustrating a broadcast signal generation method for generating a broadcast signal when the channel bonding mode according to one embodiment of the present invention is an SNR averaging mode.

[0041] Figure 7 is a flowchart illustrating a broadcast signal receiving method according to one embodiment of the present invention.

[0042] Figure 8 is a block diagram showing a computer system configuration according to one embodiment of the present invention.

[0043] The present invention will be described in detail with reference to the attached drawings. Herein, repetitive descriptions, well-known functions that may unnecessarily obscure the gist of the present invention, and detailed descriptions of configurations are omitted. The embodiments of the present invention are provided to more fully explain the present invention to those of ordinary skill in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clarity.

[0044] Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings.

[0045] Figure 1 is a block diagram showing an example of a broadcast signal transmission device using multiple transmission antennas and channel bonding.

[0046] Referring to FIG. 1, a broadcast signal transmission device using multiple transmission antennas and channel bonding according to an embodiment of the present invention includes an input formatting unit (110), a stream distributor (120), a first BICM unit (131), a second BICM unit (132), a first MIMO precoding unit (141), a second MIMO precoding unit (142), a first cell exchanger (151), a second cell exchanger (152), framing & interleaving units (161, 162, 163, 164), waveform generators (171, 172, 173, 174), and antenna units (181, 182).

[0047] The structure and operation of each component illustrated in Fig. 1 are disclosed in detail in Korean Patent Publication Nos. 10-2023-0130517 and 10-2023-0130532, etc.

[0048] The input formatting unit (110) generates packetized data (baseband packets) in units of processing blocks of the transmission system. At this time, the transmission system can classify packets to which the same BICM (Bit Interleaved Coded Modulation) and transmission signal generation parameters are applied and define them as the same PLP (Physical Layer Pipe).

[0049] The stream distributor (120) separates the input bit stream into two different channels (RF 1, RF 2).

[0050] That is, baseband packets, which are packetized data in units of processing blocks of a transmission system using channel bonding, are generated through the input formatting unit (110) and the stream distributor (120). At this time, the stream distributor (120) can cooperate with the function of the input formatting unit of the transmission system to which channel bonding is not applied to separate the bit string entering the input formatting unit (110) so that it is transmitted to two different channels. Through this, two different baseband packet strings are input to the first BICM unit (131) and the second BICM unit (132), which are BICM blocks located in the signal generation path of RF 1 and BICM blocks located in the signal generation path of RF 2.

[0051] The two data columns packetized into block units are processed in the first BICM unit (131) and the second BICM unit (132), respectively.

[0052] The first BICM unit (131) and the second BICM unit (132) may each include an FEC (Forward Error Correction) unit, a BIL (Bit Interleaver) unit, and a MIMO (Multi-Input Multi-Output) MAP (mapping) unit. At this time, the FEC unit may apply channel coding to baseband packets to generate FEC frames, which are groups of bits. At this time, the channel coding may be a single-structure method, or may be a method composed of multiple stages, such as inner and outer coding. At this time, the BIL unit may perform bit interleaving on the FEC frames output from the FEC unit. At this time, the MIMO MAP unit may generate data cells for transmitting output to each of the multiple antennas with respect to the output bit string of the BIL unit. To this end, the MIMO MAP unit can be composed of two sub-blocks: a demultiplexer unit and a bit-to-IQ mapping unit. At this time, the demultiplexer unit can group input bit streams according to the modulation order and the number of multiple antennas in order to convert them into data cells. At this time, the bit stream corresponding to each group can be different depending on the modulation order and the number of multiple antennas. The bit-to-IQ mapping unit maps the output of the demultiplexer unit to constellations corresponding to groups of bits corresponding to each antenna output, and generates data cells corresponding to each antenna output. In one embodiment, even-numbered bit groups (or vectors) can be mapped to data cells for the first antenna (ANTENNA 1), and odd-numbered bit groups (or vectors) can be mapped to data cells for the second antenna (ANTENNA 2). At this time, grouping of each bit in the MIMO MAP section or constellation mapping of bits using this can be performed using various methods not illustrated.

[0053] The first antenna (ANTENNA 1) and the second antenna (ANTENNA 2) may correspond to a first polarization and a second polarization, respectively. That is, the first antenna (ANTENNA 1) may correspond to a first polarization, and the second antenna (ANTENNA 2) may correspond to a second polarization. For example, the first polarization may be vertical polarization, and the second polarization may be horizontal polarization.

[0054] Here, polarization can be the orientation of the electric field vector of a radiated electromagnetic wave with respect to the horizon as seen from the antenna. In other words, polarization can describe the orientation of the wave emitted from. This orientation can be planar or circular.

[0055] Hereinafter, the first antenna may be replaced with the first polarization, and the second antenna may be replaced with the second polarization.

[0056] Groups of two different data cells are input to the MIMO precoding units (141, 142).

[0057] At this time, the MIMO precoding units (141, 142) may include a streaming combiner, an IQ polarization interleaving unit, and a phase hopping unit, respectively. At this time, the stream combiner may combine two data cells inputted and output them. At this time, the IQ polarization interleaving unit may exchange the quadrature components of the two data cells inputted and output them. At this time, the phase hopping unit may change the phase of the data cells inputted and output them. At this time, all three sub-blocks may be activated and operated, all may be deactivated and operated, or only some of the blocks may be activated and operated. In addition, each sub-block may output a different signal or the same signal depending on the channel coding rate and modulation order applied to the data cells inputted to each sub-block. The MIMO precoding units (141, 142) illustrated in FIG. 1 can output two data cells to be output through the first antenna (ANTENNA 1) and the second antenna (ANTENNA 2).

[0058] The first cell exchanger (151) and the second cell exchanger (152) illustrated in FIG. 1 can be activated / deactivated, respectively, depending on the channel bonding mode. When the first cell exchanger (151) is deactivated, the input and output of the first cell exchanger (151) can be the same without exchange. When the second cell exchanger (152) is deactivated, the input and output of the second cell exchanger (152) can be the same without exchange.

[0059] For example, when the first cell exchanger (151) is deactivated, the data cell corresponding to the first antenna (ANTENNA 1) in the output of the MIMO precoding unit (141) input to the first cell exchanger (151) is output to the framing & interleaving unit (161) that generates a signal output through the first antenna (ANTENNA 1) corresponding to RF 1, and the data cell corresponding to the first antenna (ANTENNA 1) in the output of the MIMO precoding unit (142) is output to the framing & interleaving unit (163) that generates a signal output through the first antenna (ANTENNA 1) corresponding to RF 2. And, when the second cell exchanger (152) is deactivated, the data cell corresponding to the second antenna (ANTENNA 2) in the output of the MIMO precoding unit (141) input to the second cell exchanger (152) is output to the framing & interleaving unit (162) which generates a signal output through the second antenna (ANTENNA 2) corresponding to RF 1, and the data cell corresponding to the second antenna (ANTENNA 2) in the output of the MIMO precoding unit (142) is output to the framing & interleaving unit (164) which generates a signal output through the second antenna (ANTENNA 2) corresponding to RF 2.

[0060] When the first cell exchanger (151) is activated, the first cell exchanger (151) can exchange data between channels (RF 1, RF 2), so that baseband packets and FEC blocks to be transmitted can be transmitted through both RF channels (RF 1, RF 2). When the second cell exchanger (152) is activated, the second cell exchanger (152) can exchange data between channels (RF 1, RF 2), so that baseband packets and FEC blocks to be transmitted can be transmitted through both RF channels (RF 1, RF 2). However, even when the first cell exchanger (151) and the second cell exchanger (152) are activated, cell exchange can be performed only for some inputs (e.g., odd-numbered inputs).

[0061] In this way, when channel bonding (SNR averaging channel bonding) using crossover between channels of data cells is applied, the first cell exchanger (151) and / or the second cell exchanger (152) are activated.

[0062] At this time, when a channel bonding technology using multiple antenna technology and channel-to-channel crossing is applied in combination, the activated cell exchanger operates by considering both multiple antennas and channels.

[0063] For example, the first cell exchanger (151) can output the input data as is without crossing if the data cell output order pair corresponding to each of the first antenna (ANTENNA 1) and the second antenna (ANTENNA 2) in the output of the MIMO precoding unit (141) is an even number. At this time, the second cell exchanger (152) can output the input data as is without crossing if the data cell output order pair corresponding to each of the first antenna (ANTENNA 1) and the second antenna (ANTENNA 2) in the output of the MIMO precoding unit (141) is an even number. The first antenna (ANTENNA 1) and second antenna (ANTENNA 2) data cell order pair corresponding to RF 1 from the output of the first cell exchanger (151) and the second cell exchanger (152) can be output through the RF 1 antenna unit (181) via the framing & interleaving units (161, 162) and waveform generators (171, 172) of RF 1, and the first antenna (ANTENNA 1) and second antenna (ANTENNA 2) data cell order pair corresponding to RF 2 can be output through the RF 2 antenna unit (182) via the framing & interleaving units (163, 164) and waveform generators (173, 174) of RF 2.

[0064] On the other hand, if the data cell output order pair corresponding to each of the first antenna (ANTENNA 1) and the second antenna (ANTENNA 2) of the MIMO precoding unit (141) corresponding to the RF 1 transmission signal generation path and the data cell output order pair corresponding to each of the first antenna (ANTENNA 1) and the second antenna (ANTENNA 2) of the MIMO precoding unit (142) corresponding to the RF 2 transmission signal generation path are odd-numbered, the data cell output order pair corresponding to RF 1 is output through the RF 2 antenna unit (182) via the framing & interleaving units (163, 164) and waveform generators (173, 174) corresponding to the transmission signal generation path corresponding to RF 2 before the first cell exchanger (151) and the second cell exchanger (152), and the data cell output corresponding to RF 2 is output The ordered pair can be output through the RF 1 antenna unit (181) via the framing & interleaving units (161, 162) and waveform generators (171, 172) corresponding to the transmission signal generation path corresponding to RF 1.

[0065] That is, when it is an even-numbered data cell order pair, the data cell corresponding to the first antenna (ANTENNA 1) in the output of the MIMO precoding unit (141) input to the first cell exchanger (151) is output to the framing & interleaving unit (161) which generates a signal output through the first antenna (ANTENNA 1) corresponding to RF 1, and the data cell corresponding to the first antenna in the output of the MIMO precoding unit (142) is output to the framing & interleaving unit (163) which generates a signal output through the first antenna (ANTENNA 1) corresponding to RF 2. At this time, the data cell corresponding to the second antenna (ANTENNA 2) in the output of the MIMO precoding unit (141) input to the second cell exchanger (152) may be output to the framing & interleaving unit (162) that generates a signal output through the second antenna (ANTENNA 2) corresponding to RF 1, and the data cell corresponding to the second antenna in the output of the MIMO precoding unit (142) may be output to the framing & interleaving unit (164) that generates a signal output through the second antenna (ANTENNA 2) corresponding to RF 2.

[0066] In addition, when it is an odd-numbered data cell order pair, the data cell corresponding to the first antenna (ANTENNA 1) in the output of the MIMO precoding unit (141) input to the first cell exchanger (151) is output to the framing & interleaving unit (163) that generates a signal output through the first antenna (ANTENNA 1) corresponding to RF 2, and the data cell corresponding to the first antenna in the output of the MIMO precoding unit (142) is output to the framing & interleaving unit (161) that generates a signal output through the first antenna (ANTENNA 1) corresponding to RF 1. At this time, the data cell corresponding to the second antenna (ANTENNA 2) in the output of the MIMO precoding unit (141) input to the second cell exchanger (152) may be output to the framing & interleaving unit (164) that generates a signal output through the second antenna (ANTENNA 2) corresponding to RF 2, and the data cell corresponding to the second antenna in the output of the MIMO precoding unit (142) may be output to the framing & interleaving unit (162) that generates a signal output through the second antenna (ANTENNA 2) corresponding to RF 1.

[0067] At this time, the input of the first cell exchanger (151) is a precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0), and the input of the second cell exchanger (152) may be a precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) may be. At this time, the first cell exchanger (151) may be a MIMO precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0) to perform a cell exchange to obtain the first exchange output pair (g 2i,1 , g 2i,2 ) and the second cell exchanger (152) generates a MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2) to perform a cell exchange on the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) can be created.

[0068] At this time, the first cell exchanger (151) can output the precoded first polarization input pair as the first exchange output pair if the precoded first polarization input pair is an even number (i is 0 or an even number), and the second cell exchanger (152) can output the precoded second polarization input pair as the second exchange output pair if the precoded second polarization input pair is an even number (i is 0 or an even number). At this time, the first cell exchanger (151) can output the first exchange output pair by crossing the first precoded polarization input pair when the first precoded polarization input pair is odd (i is odd), and the second cell exchanger (152) can output the second exchange output pair by crossing the second precoded polarization input pair when the second precoded polarization input pair is odd (i is odd).

[0069] At this time, the first cell exchanger (151) and the second cell exchanger (152) each correspond to a cell exchange matrix, and the cell exchange matrix corresponding to the first cell exchanger (151) and the cell exchange matrix corresponding to the second cell exchanger (152) may be the same.

[0070] At this time, the first cell exchanger (151) and the second cell exchanger (152) operate based on at least one of a channel bonding format field included in the L1 signaling information for the first RF and a channel bonding format field included in the L1 signaling information for the second RF, respectively, and the channel bonding format field may indicate one of a plain channel bonding mode and an SNR averaging channel bonding mode with 2 bits. At this time, the first cell exchanger (151) and the second cell exchanger (152) may confirm that the channel bonding format field corresponding to the first RF and the channel bonding format field corresponding to the second RF are the same, and may operate based on the 2-bit channel bonding format field that is set to be the same.

[0071] At this time, the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF may be set to be the same. Depending on the embodiment, the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF may be set to be different from each other.

[0072] At this time, the first cell exchanger (151) and the second cell exchanger (152) may be activated when the SNR averaging channel bonding mode is applied. At this time, when the SNR averaging channel bonding mode is applied, the MIMO precoding unit (141) and the MIMO precoding unit (142) may correspond to the same MIMO setting. That is, when the SNR averaging channel bonding mode is applied, the MIMO setting of the MIMO precoding unit (141) and the MIMO setting of the MIMO precoding unit (142) may be the same.

[0073] When the SNR averaging channel bonding mode is applied, the MIMO precoded first polarization input pair (s2i,1 , s 2i,2 )'s first input (s) 2i,1 ) and MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 )'s first input (s) 2i+1,1 ) and a MIMO setup that generates a MIMO precoded first polarization input pair (s 2i,1 , s 2i,2 ) second input (s) 2i,2 ) and MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) second input (s) 2i+1,2 ) can be the same MIMO settings.

[0074] At this time, the MIMO setting may correspond to the first field (L1D_plp_mimo_stream_combining), the second field (L1D_plp_mimo_IQ_interleaving), and the third field (L1D_plp_mimo_PH) corresponding to MIMO precoding. At this time, the first field, the second field, and the third field may all be 1-bit fields. At this time, the first field may be a field corresponding to activation / deactivation of the stream combining unit of FIG. 2, which will be described later, the second field may be a field corresponding to activation / deactivation of the IQ polarization interleaving unit, and the third field may be a field corresponding to activation / deactivation of the phase hopping unit.

[0075] The first RF section (191) is the first output (g) of the first exchange output pair. 2i,1 ) and the first output (g) of the second exchange output pair 2i+1,1 ) is used to generate first RF MIMO signals corresponding to the first RF (Radio Frequency). At this time, the first RF unit (191) may include framing & interleaving units (161, 162), waveform generators (171, 172), and an antenna unit (181).

[0076] The second RF section (192) is the second output (g) of the first cell exchanger. 2i,2 ) and the second output (g) of the second cell exchanger 2i+1,2 ) to generate second RF MIMO signals corresponding to the second RF. At this time, the second RF unit (192) may include framing & interleaving units (163, 164), waveform generators (173, 174), and an antenna unit (182).

[0077] The first RF unit (191) and the second RF unit (192) can form a signal generation unit.

[0078] The framing & interleaving units (161, 162, 163, 164) illustrated in FIG. 1 can each generate a signal corresponding to a frame to be transmitted via an antenna using data cells input as input. At this time, the framing & interleaving units (161, 162, 163, 164) may or may not activate and perform time interleaving for each input data cell. At this time, the framing & interleaving units (161, 162, 163, 164) may each perform framing for configuring a preamble symbol and a subframe for each data cell. At this time, the preamble symbol may not include a data cell. At this time, frequency interleaving may or may not be activated and applied.

[0079] At this time, the time interleaver corresponding to the first exchange output pair and the second exchange output pair can correspond to a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement of SISO (Single-Input Single-Output) applied to a single RF channel.

[0080] The grouped data cells, which are the outputs of the framing & interleaving units (161, 162, 163, 164), are input to the waveform generators (171, 172, 173, 174). At this time, the waveform generators (171, 172, 173, 174) may each perform an IFFT (Inverse Fast Fourier Transform) after pilot insertion and insert a guard interval symbol. In addition, the waveform generators (171, 172, 173, 174) may each generate a bootstrap symbol and output it by positioning it at the very beginning of the transmission frame. At this time, each of the waveform generators (171, 172, 173, 174) may activate and apply the MISO (Multiple-Input Single-Output) signal processing function or may deactivate and not apply it.

[0081] Using the broadcast signal transmitter exemplified in Figure 1, one can enjoy the increased transmission rate within a single frequency achieved by multiple antennas, and utilize multiple single frequencies as if they were a single frequency. Furthermore, in addition to the multiplexing effect achieved through multiple antennas, additional channel multiplexing effects can be achieved by crossing multiple broadcast channels. Therefore, the present invention overcomes the limitations of existing broadcast transmission methods, enabling the provision of hyper-realistic media services and the full utilization of scarce frequency resources.

[0082] Fig. 2 is a block diagram showing an example of the MIMO precoding unit illustrated in Fig. 1.

[0083] Referring to FIG. 2, the MIMO precoding unit (141 or 142) illustrated in FIG. 1 includes a stream combining unit (210), an IQ polarization interleaving unit (220), and a phase hopping unit (230).

[0084] The stream combining unit (210) can combine two data cells input as input and output them.

[0085] The IQ polarization interleaving unit (220) can output the quadrature components of two data cells input by exchanging them with each other.

[0086] The phase hopping unit (230) can change the phase of data cells coming in as input and output them.

[0087] At this time, the stream combining unit (210), the IQ polarization interleaving unit (220), and the phase hopping unit (230) may all be activated, all may be deactivated, or only some of them may be activated and operate. In addition, depending on the channel coding rate and modulation order applied to the data cells input to each of the stream combining unit (210), the IQ polarization interleaving unit (220), and the phase hopping unit (230), the stream combining unit (210), the IQ polarization interleaving unit (220), and the phase hopping unit (230) may output different signals or the same signals, respectively.

[0088] The first cell exchanger (151) and the second cell exchanger (152) illustrated in FIG. 1 may exist independently and operate independently for the first antenna / first polarization and the second antenna / second polarization, respectively, or may operate identically for simplicity of implementation.

[0089] FIG. 3 is a block diagram showing an example of the first cell exchanger illustrated in FIG. 1.

[0090] Referring to FIG. 3, the first cell exchanger illustrated in FIG. 1 includes a MIMO precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0) to perform a cell exchange to obtain the first exchange output pair (g 2i,1 , g 2i,2 ) is created.

[0091] The first polarization input pair (s) 2i,1 , s 2i,2) may be cells corresponding to RF channel 1 and RF channel 2 transmitted to the first polarization / first antenna.

[0092] First exchange output pair (g 2i,1 , g 2i,2 ) may be cells corresponding to RF channel 1 and RF channel 2 transmitted to the first polarization / first antenna.

[0093] At this time, the first exchange output pair (g 2i,1 , g 2i,2 ) may be output cells output to time interleavers of RF 1 and RF 2 via the first antenna / first polarization, and may be provided as time interleavers corresponding to the framing & interleaving units illustrated in FIG. 1.

[0094] When SNR averaging channel bonding is applied, the first cell exchanger may be applied for the first antenna / first polarization.

[0095] At this time, as in the following mathematical expression 1, the cell exchange matrix defined for the first antenna / first polarization is index i (i = 0 ... ┕N cells / 2┙ -1) must be multiplied by the vector including both cells for each input path at index i.

[0096] [Mathematical Formula 1]

[0097]

[0098] In the above mathematical expression 1, the input cells s input to the cell exchanger 2i,1 and s 2i,2 are associated with RF channels RF 1 and RF 2 respectively. Output cells g output from the cell exchanger 2i,1 and g 2i,2 are associated with RF 1 and RF 2 respectively.

[0099] In FIG. 3, TI represents a time interleaver, Tx1 represents a first antenna or a first polarization, and Tx2 represents a second antenna or a second polarization.

[0100] FIG. 4 is a block diagram showing an example of the second cell exchanger illustrated in FIG. 1.

[0101] Referring to FIG. 4, the second cell exchanger illustrated in FIG. 1 includes a MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 )(i is an integer greater than or equal to 0) to perform a cell exchange to obtain the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) is created.

[0102] Second polarization input pair (s 2i+1,1 , s 2i+1,2 ) may be cells corresponding to RF channel 1 and RF channel 2 transmitted to the second polarization / second antenna.

[0103] Second exchange output pair (g 2i+1,1 , g 2i+1,2 ) may be cells corresponding to RF channel 1 and RF channel 2 transmitted to the second polarization / second antenna.

[0104] At this time, the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) may be output cells output to the time interleavers of RF 1 and RF 2 via the second antenna / second polarization, and may be provided as time interleavers corresponding to the framing & interleaving units illustrated in FIG. 1.

[0105] When SNR averaging channel bonding is applied, a second cell exchanger may be applied for the second antenna / second polarization.

[0106] At this time, as in the following mathematical expression 2, the cell exchange matrix defined for the second antenna / second polarization is index i (i = 0 ... ┕N cells / 2┙ -1) must be multiplied by the vector including both cells for each input path at index i.

[0107] [Equation 2]

[0108]

[0109] In the above mathematical expression 2, the input cells s input to the cell exchanger 2i+1,1 and s 2i+1,2 are associated with RF channels RF 1 and RF 2 respectively. Output cells g output from the cell exchanger 2i+1,1 and g 2i+1,2 are associated with RF 1 and RF 2 respectively.

[0110] In Fig. 4, TI represents a time interleaver, Tx1 represents a first antenna or a first polarization, and Tx2 represents a second antenna or a second polarization.

[0111] The first cell exchanger (151) and the second cell exchanger (152) illustrated in FIG. 1 may both be activated, both may be deactivated, or only one of them may be activated.

[0112] Therefore, when channel bonding technology and MIMO technology are applied together, the receiver must obtain information on whether the first cell exchanger (151) and the second cell exchanger (152) of the transmitter are activated.

[0113] In particular, the preamble of an ATSC 3.0 broadcast signal frame may include L1-detail signaling fields as L1 signaling information, and the L1-detail signaling fields may include a 2-bit L1D_plp_channel_bonding_format field.

[0114] For example, the 2-bit L1D_plp_channel_bonding_format field can be set as shown in Table 1 below.

[0115] ValueMeaning00Plain channel bonding01SNR averaged channel bonding10Reserved for future use11Reserved for future use

[0116] In the example described in Table 1, plane channel bonding may refer to a channel bonding mode in which the cell exchange unit is deactivated and no cell exchange occurs, and SNR averaging channel bonding may refer to a channel bonding mode in which the cell exchange unit is activated and cell exchange occurs.

[0117] Fig. 5 is a block diagram showing another example of a broadcast signal transmission device using multiple transmission antennas and channel bonding.

[0118] Referring to FIG. 5, a broadcast signal transmission device using multiple transmission antennas and channel bonding according to an embodiment of the present invention includes an input formatting unit (110), a stream distributor (120), a first BICM unit (131), a second BICM unit (132), a first MIMO precoding unit (141), a second MIMO precoding unit (142), a first cell exchanger (151), a second cell exchanger (152), framing & interleaving units (161, 162, 163, 164), waveform generators (171, 172, 173, 174), antenna units (181, 182), and an L1 (Layer 1) signaling generator (510).

[0119] Among the components illustrated in FIG. 5, components other than the L1 signaling generator (510) have already been sufficiently explained in the description through FIG. 1, so a repeated explanation will be omitted.

[0120] Since the broadcast signal transmission device illustrated in FIG. 5 includes a first cell exchanger (151) and a second cell exchanger (152), information on whether these two components are activated must be transmitted to the receiver.

[0121] Accordingly, information regarding whether the first cell exchanger (151) is activated and information regarding whether the second cell exchanger (152) is activated are provided to the L1 signaling generator (510).

[0122] The L1 signaling generator (510) receives information regarding whether the first cell exchanger (151) is activated and information regarding whether the second cell exchanger (152) is activated, and generates L1 signaling information for RF 1 and L1 signaling information for RF 2 based on the information. At this time, the L1 signaling information for RF 1 may be provided to the framing & interleaving units (161, 162), and the L1 signaling information for RF 2 may be provided to the framing & interleaving units (163, 164).

[0123] At this time, the L1 signaling information for RF 1 and the L1 signaling information for RF 2 may include a channel bonding format field. At this time, the channel bonding format field may be an L1D_plp_channel_bonding_format field.

[0124] At this time, the L1D_plp_channel_bonding_format field included in the L1 signaling information for RF 1 and the L1D_plp_channel_bonding_format field included in the L1 signaling information for RF 2 may be set to be the same. At this time, the L1D_plp_channel_bonding_format field included in the L1 signaling information for RF 1 and the L1D_plp_channel_bonding_format field included in the L1 signaling information for RF 2 may be set to be different from each other.

[0125] At this time, the framing & interleaving units (161, 162, 163, 164) can generate a preamble based on the L1 signaling information provided from the L1 signaling generator (510). At this time, the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) can be set to be identical to the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164). At this time, the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) may be set differently from the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164).

[0126] At this time, the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) can be set in the same manner as Table 1 above, and the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164) can also be set in the same manner as Table 1 above. At this time, the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) can be set to be identical to the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164).

[0127] If the L1D_plp_channel_bonding_format field is set in the same manner as Table 1, and the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) is set to be identical to the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164), both the first cell exchanger and the second cell exchanger of the broadcast signal transmission device may be deactivated or both may be activated.

[0128] To cover the case where only one of the first cell exchanger and the second cell exchanger is disabled, a 2-bit L1D_plp_channel_bonding_format field as shown in Table 2 below may be used.

[0129] ValueMeaning00Plain channel bonding01SNR averaged channel bonding for both antenna 1 and 210SNR averaged channel bonding for antenna 1 only(Plain channel bonding for antenna 2)11SNR averaged channel bonding for antenna 2 only(Plain channel bonding for antenna 1)

[0130] When the L1D_plp_channel_bonding_format field as described in Table 2 is used, the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) may be set identically to the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164). That is, in this case, for Physical Layer Pipes (PLPs) to which both channel bonding technology and MIMO technology are applied, the L1D_plp_channel_bonding_format field may be set identically for both RF 1 and RF 2.

[0131] At this time, if L1D_plp_channel_bonding_format is set to 01, 10, or 11, the modulation chains for RF 1 and RF 2 can have the same BICM configuration.

[0132] Table 3 below may be for a case where the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (161, 162) is set differently from the L1D_plp_channel_bonding_format field included in the preamble generated by the framing & interleaving units (163, 164).

[0133] ValueMeaningL1D_plp_channel_bonding_format(RF 1: L1D_rf_id = 0)L1D_plp_channel_bonding_format(RF 2: L1D_rf_id = 1)0000Fully plain channel bonding0001SNR averaged channel bonding for antenna 2 only(Plain channel bonding for antenna 1)0100SNR averaged channel bonding for antenna 1 only(Plain channel bonding for antenna 2)0101SNR averaged channel bonding for both antenna 1 and 20010N / A0011N / A0110N / A0111N / A1000N / A1001N / A1010N / A1011N / A1100N / A1101N / A1110N / A1111N / A

[0134] That is, in the example of Table 3, L1D_plp_channel_bonding_format for RF 1 and L1D_plp_channel_bonding_format for RF 2 can be assigned differently. In this case, L1D_plp_channel_bonding_format for RF 1 and L1D_plp_channel_bonding_format for RF 2 can be used in combination.

[0135] FIG. 6 is a flowchart illustrating a broadcast signal generation method for generating a broadcast signal when the channel bonding mode according to one embodiment of the present invention is an SNR averaging mode.

[0136] Referring to FIG. 6, a broadcast signal generation method for generating a broadcast signal when a channel bonding mode according to an embodiment of the present invention is an SNR averaging mode, comprises a MIMO (Multi-Input Multi-Output) precoded first polarization input pair (s 2i,1 , s 2i,2)(i is an integer greater than or equal to 0) to perform a cell exchange for the first exchange output pair (g 2i,1 , g 2i,2 ) is created (S610).

[0137] In addition, a broadcast signal generation method for generating a broadcast signal when the channel bonding mode according to one embodiment of the present invention is an SNR averaging mode, comprises a MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) to perform a cell exchange for the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) is created (S620).

[0138] At this time, the first exchange output pair may be set to be identical to the precoded first polarization input pair when the precoded first polarization input pair is an even number (i is 0 or even), and the second exchange output pair may be set to be identical to the precoded second polarization input pair when the precoded second polarization input pair is an even number (i is 0 or even).

[0139] At this time, the first exchange output pair may be set by crossing the first precoded polarization input pair when the first precoded polarization input pair is odd (i is odd), and the second exchange output pair may be set by crossing the second precoded polarization input pair when the second precoded polarization input pair is odd (i is odd).

[0140] At this time, step (S610) and step (S620) each correspond to a cell exchange matrix, and the cell exchange matrix corresponding to step (S610) and the cell exchange matrix corresponding to step (S620) may be the same.

[0141] At this time, step (S610) and step (S620) operate based on at least one of a channel bonding format field included in the L1 signaling information for the first RF and a channel bonding format field included in the L1 signaling information for the second RF, respectively, and the channel bonding format field can indicate one of a plain channel bonding mode and an SNR averaging channel bonding mode with 2 bits.

[0142] At this time, the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF may be set to be the same.

[0143] At this time, the time interleaver corresponding to the first exchange output pair and the second exchange output pair can correspond to a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement of SISO (Single-Input Single-Output) applied to a single RF channel.

[0144] At this time, when the SNR averaging channel bonding mode is applied, the MIMO precoded first polarization input pair (s 2i,1 , s 2i,2 )'s first input (s) 2i,1 ) and the MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 )'s first input (s) 2i+1,1 ) and the MIMO setting (same MIMO setting) that generates the first polarization input pair (s) of the MIMO precoded 2i,1 , s 2i,2 ) second input (s) 2i,2 ) and the MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) second input (s)2i+1,2 ) can be the same MIMO settings.

[0145] In addition, a broadcast signal generation method for generating a broadcast signal when the channel bonding mode according to one embodiment of the present invention is an SNR averaging mode generates first RF MIMO signals and second RF MIMO signals transmitted through a first antenna unit and a second antenna unit using the first exchange output pair and the second exchange output pair (S630).

[0146] At this time, the first RF MIMO signals may correspond to the first RF, and the second RF MIMO signals may correspond to the second RF.

[0147] Figure 7 is a flowchart illustrating a broadcast signal receiving method according to one embodiment of the present invention.

[0148] Referring to FIG. 7, a broadcast signal receiving method according to an embodiment of the present invention receives first RF MIMO (Multi-Input Multi-Output) signals corresponding to a first RF and second RF MIMO signals corresponding to a second RF using a first polarization and a second polarization (S710).

[0149] At this time, the time interleaver corresponding to the first RF MIMO signals and the second RF MIMO signals can correspond to a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement of SISO (Single-Input Single-Output) applied to a single RF channel.

[0150] At this time, the MIMO precoded first polarization input pair (s) corresponding to the first polarization 2i,1 , s 2i,2 )'s first input (s) 2i,1) and a MIMO precoded second polarization input pair (s) corresponding to the second polarization 2i+1,1 , s 2i+1,2 )'s first input (s) 2i+1,1 ) and a MIMO precoded first polarization input pair (s) corresponding to the first polarization. 2i,1 , s 2i,2 ) second input (s) 2i,2 ) and a MIMO precoded second polarization input pair (s) corresponding to the second polarization 2i+1,1 , s 2i+1,2 ) second input (s) 2i+1,2 ) can be the same when SNR averaging channel bonding mode is applied.

[0151] In addition, a broadcast signal receiving method according to one embodiment of the present invention restores a first preamble and a second preamble using the first RF MIMO signals and the second RF MIMO signals (S710).

[0152] At this time, the first preamble and the second preamble may include the same L1D_plp_channel_bonding_format field. That is, the channel bonding format field corresponding to the first preamble (included in L1 signaling for the first RF) and the channel bonding format field corresponding to the second preamble (included in L1 signaling for the second RF) may be set identically.

[0153] At this time, the first preamble and the second preamble may include different L1D_plp_channel_bonding_format fields.

[0154] In addition, a broadcast signal receiving method according to one embodiment of the present invention performs a reverse process of cell exchange based on a channel bonding format field corresponding to the first preamble and the second preamble (S730).

[0155] Figure 8 is a block diagram showing a computer system configuration according to one embodiment of the present invention.

[0156] The broadcast signal transmitting device, the broadcast signal receiving device and the individual components constituting these devices according to the embodiment can be implemented in a computer system (800).

[0157] The computer system (800) may include one or more processors (810), memory (830), user interface input devices (840), user interface output devices (850), and storage (860) that communicate with each other via a bus (820). The computer system (800) may further include a network interface (870) connected to a network (880). The processor (810) may be a central processing unit or a semiconductor device that executes programs or processing instructions stored in the memory (830) or storage (860). The memory (830) and storage (860) may be storage media that include at least one of a volatile medium, a nonvolatile medium, a removable medium, a non-removable medium, a communication medium, or an information transmission medium. For example, the memory (830) may include a ROM (831) or a RAM (832).

[0158] At this time, at least one program can be recorded in the memory (830).

[0159] At this time, the processor (810) can execute the program. At this time, the program can perform each step illustrated in FIG. 6 or each step illustrated in FIG. 7.

[0160]

[0161] As described above, the broadcast signal transmission device, method, and broadcast signal reception method according to the present invention are not limited to the configurations and methods of the embodiments described above, but the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

Claims

1. MIMO (Multi-Input Multi-Output) precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0) to perform a cell exchange to obtain the first exchange output pair (g 2i,1 , g 2i,2 ) a first cell exchanger generating; MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) to perform a cell exchange on the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) a second cell exchanger that generates; The first output (g) of the first exchange output pair 2i,1 ) and the first output (g) of the second exchange output pair 2i+1,1 ) to generate first RF MIMO signals corresponding to the first RF; and The second output (g) of the first cell exchanger 2i,2 ) and the second output (g) of the second cell exchanger 2i+1,2 ) to generate second RF MIMO signals corresponding to the second RF. A broadcast signal transmitting device including:

2. In claim 1, The above first cell exchanger If the above precoded first polarization input pair is an even number (i is 0 or even), the above precoded first polarization input pair is output as the first exchange output pair, The above second cell exchanger A broadcast signal transmission device characterized in that, when the second precoded polarization input pair is an even number (i is 0 or an even number), the second precoded polarization input pair is output as the second exchange output pair.

3. In claim 2, The above first cell exchanger If the above precoded first polarization input pair is odd (i is odd), the above precoded first polarization input pair is crossed and output as the first exchange output pair, The above second cell exchanger A broadcast signal transmission device characterized in that, when the second precoded polarization input pair is an odd number (i is an odd number), the second precoded polarization input pair is crossed and output as the second exchange output pair.

4. In claim 3, The first cell exchanger and the second cell exchanger are each Corresponding to the cell exchange matrix, A broadcast signal transmission device, characterized in that the cell exchange matrix corresponding to the first cell exchanger and the cell exchange matrix corresponding to the second cell exchanger are the same.

5. In claim 4, The first cell exchanger and the second cell exchanger are each A broadcast signal transmission device, characterized in that it operates based on at least one of a channel bonding format field included in L1 signaling information for the first RF and a channel bonding format field included in L1 signaling information for the second RF, wherein the channel bonding format field indicates one of a plain channel bonding mode and an SNR averaging channel bonding mode with 2 bits.

6. In claim 5, A broadcast signal transmission device, characterized in that the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF are set identically.

7. In claim 5, The time interleaver corresponding to the first exchange output pair and the second exchange output pair is, A broadcast signal transmission device characterized by a total memory requirement that is twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement for SISO (Single-Input Single-Output) applied to a single RF channel.

8. In claim 5, The first cell exchanger and the second cell exchanger Activated when the above SNR averaging channel bonding mode is applied, When the above SNR averaging channel bonding mode is applied, The first input (s) of the above MIMO precoded first polarization input pair 2i,1 ) and the first input (s) of the second polarization input pair of the MIMO precoded 2i+1,1 ) and the MIMO setting that creates the The second input (s) of the above MIMO precoded first polarization input pair 2i,2 ) and the second input (s) of the second polarization input pair of the MIMO precoded 2i+1,2 ) is a broadcast signal transmitting device characterized by the same MIMO settings.

9. In a broadcast signal generation method for generating a broadcast signal when the channel bonding mode is SNR averaging mode, MIMO (Multi-Input Multi-Output) precoded first polarization input pair (s 2i,1 , s 2i,2 )(i is an integer greater than or equal to 0) to perform a cell exchange for the first exchange output pair (g 2i,1 , g 2i,2 ) to create a step; MIMO precoded second polarization input pair (s 2i+1,1 , s 2i+1,2 ) to perform a cell exchange for the second exchange output pair (g 2i+1,1 , g 2i+1,2 ) to generate; and A step of generating first RF MIMO signals and second RF MIMO signals transmitted through a first antenna unit and a second antenna unit using the first exchange output pair and the second exchange output pair. A method for transmitting a broadcast signal including:

10. In claim 9, The above first exchange output pair is If the above precoded first polarization input pair is an even number (i is 0 or even), it is set to be the same as the above precoded first polarization input pair, The above second exchange output pair is A broadcast signal transmission method, characterized in that, when the above precoded second polarization input pair is an even number (i is 0 or an even number), it is set to be the same as the above precoded second polarization input pair.

11. In claim 10, The above first exchange output pair is If the above precoded first polarization input pair is odd (i is odd), the above precoded first polarization input pair is set by crossing, The above second exchange output pair is A broadcast signal transmission method characterized in that, when the above-mentioned second polarization input pair is an odd number (i is an odd number), the above-mentioned second polarization input pair is set by crossing them.

12. In claim 11, The step of generating the first exchange output pair and the step of generating the second exchange output pair are respectively Corresponding to the cell exchange matrix, A broadcast signal transmission method, characterized in that the cell exchange matrix corresponding to the step of generating the first exchange output pair and the cell exchange matrix corresponding to the step of generating the second exchange output pair are the same.

13. In claim 12, The first RF MIMO signals correspond to the first RF, and the second RF MIMO signals correspond to the second RF, The step of generating the first exchange output pair and the step of generating the second exchange output pair are respectively A broadcast signal transmission method, characterized in that it operates based on at least one of a channel bonding format field included in L1 signaling information for the first RF and a channel bonding format field included in L1 signaling information for the second RF, and the channel bonding format field indicates one of a plain channel bonding mode and an SNR averaging channel bonding mode with 2 bits.

14. In claim 13, A broadcast signal transmission method, characterized in that the channel bonding format field included in the L1 signaling information for the first RF and the channel bonding format field included in the L1 signaling information for the second RF are set identically.

15. In claim 13, The time interleaver corresponding to the first exchange output pair and the second exchange output pair is, A method for transmitting a broadcast signal, characterized in that the total memory requirement corresponds to twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement for SISO (Single-Input Single-Output) applied to a single RF channel.

16. In claim 13, When the above SNR averaging channel bonding mode is applied, The first input (s) of the above MIMO precoded first polarization input pair 2i,1 ) and the first input (s) of the second polarization input pair of the MIMO precoded 2i+1,1 ) and the MIMO setting that creates the The second input (s) of the above MIMO precoded first polarization input pair 2i,2 ) and the second input (s) of the second polarization input pair of the MIMO precoded 2i+1,2 ) is a broadcast signal transmission method characterized by the same MIMO settings.

17. A step of receiving first RF MIMO (Multi-Input Multi-Output) signals corresponding to the first RF and second RF MIMO signals corresponding to the second RF using the first polarization and the second polarization; A step of restoring a first preamble and a second preamble using the first RF MIMO signals and the second RF MIMO signals; and A step of performing a reverse process of cell exchange based on a channel bonding format field corresponding to the first preamble and the second preamble. A method for receiving a broadcast signal including:

18. In claim 17, A broadcast signal receiving method, characterized in that the channel bonding format field corresponding to the first preamble and the channel bonding format field corresponding to the second preamble are set identically.

19. In claim 17, The time interleaver corresponding to the first RF MIMO signals and the second RF MIMO signals, A method for receiving a broadcast signal, characterized in that the total memory requirement corresponds to twice the total memory requirement for MIMO applied to a single RF channel and four times the total memory requirement for SISO (Single-Input Single-Output) applied to a single RF channel.

20. In claim 17, A MIMO precoded first polarization input pair (s) corresponding to the first polarization above 2i,1 , s 2i,2 )'s first input (s) 2i,1 ) and a MIMO precoded second polarization input pair (s) corresponding to the second polarization 2i+1,1 , s 2i+1,2 )'s first input (s) 2i+1,1 ) and the MIMO setting that creates the A MIMO precoded first polarization input pair (s) corresponding to the first polarization above 2i,1 , s 2i,2 ) second input (s) 2i,2 ) and a MIMO precoded second polarization input pair (s) corresponding to the second polarization 2i+1,1 , s 2i+1,2 ) second input (s) 2i+1,2 ) is the MIMO setting that generates A broadcast signal receiving method characterized by the same when SNR averaging channel bonding mode is applied.

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