WO2014087663A1 - 送信装置、送信方法、受信装置、受信方法、集積回路、及びプログラム - Google Patents
送信装置、送信方法、受信装置、受信方法、集積回路、及びプログラム Download PDFInfo
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- WO2014087663A1 WO2014087663A1 PCT/JP2013/007175 JP2013007175W WO2014087663A1 WO 2014087663 A1 WO2014087663 A1 WO 2014087663A1 JP 2013007175 W JP2013007175 W JP 2013007175W WO 2014087663 A1 WO2014087663 A1 WO 2014087663A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6522—Intended application, e.g. transmission or communication standard
- H03M13/6541—DVB-H and DVB-M
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/068—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using space frequency diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
Definitions
- the present invention relates to MIMO transmission technology.
- MIMO transmission technology is known as a transmission technology.
- the MIMO transmission technology is characterized by parallel transmission of a plurality of signals using a plurality of antennas for both transmission and reception, and is useful for large capacity transmission.
- the MIMO transmission technology is adopted in the DVB-NGH (DVB-Next Generation Handheld) standard, which is a transmission standard for portable and mobile receivers in Europe (Non-Patent Document 3).
- this invention aims at providing the transmission apparatus which implement
- a transmitter is a transmitter for performing Multiple Input Multiple Output (MIMO) transmission using a plurality of fundamental bands, and an error correction code is generated for each data block of a predetermined length.
- An error correction coding unit that generates an error correction coding frame, a mapping unit that maps the error correction coding frame to symbols by a predetermined number of bits each to generate an error correction coding block, and the error correction code
- a MIMO coding unit that performs MIMO coding on the coded block, and distributes data components included in the error correction coding block to two or more of the plurality of basic bands. It is characterized by performing transmission.
- FIG. 2 is a diagram showing a configuration of transmitting apparatus 100 according to Embodiment 1.
- FIG. 7 is a diagram showing the configuration of a MIMO-PLP processing unit 131 according to Embodiment 1.
- 5 is a diagram showing a configuration of an L1 information processing unit 141 in Embodiment 1.
- FIG. FIG. 2 is a diagram showing a configuration of a reception device 200 according to Embodiment 1.
- FIG. 2 is a diagram showing a configuration of a MIMO-PLP processing unit 132 in Embodiment 1.
- 5 is a diagram showing a configuration of an L1 information processing unit 142 in Embodiment 1.
- FIG. FIG. 2 is a diagram showing a configuration of a reception device 250 in Embodiment 1.
- FIG. 16 is a diagram showing a configuration of a transmission device 300 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a MIMO-PLP processing unit 331 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a MIMO-PLP processing unit 332 in Embodiment 2.
- FIG. 18 is a diagram showing a configuration of an L1 information processing unit 341 in Embodiment 2.
- FIG. 18 is a diagram showing a configuration of an L1 information processing unit 342 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a reception device 400 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a MIMO-PLP processing unit 333 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a MIMO-PLP processing unit 334 in Embodiment 2.
- FIG. 18 is a diagram showing a configuration of an L1 information processing unit 343 according to Embodiment 2.
- FIG. 18 is a diagram showing a configuration of an L1 information processing unit 344 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a reception device 450 in Embodiment 2.
- FIG. 16 is a diagram showing a configuration of a transmission device 500 in Embodiment 3.
- FIG. 16 is a diagram showing a configuration of a MIMO-PLP processing unit 531 in Embodiment 3.
- FIG. 18 is a diagram showing a configuration of frequency channel interchanging portion 591 according to Embodiment 3.
- FIG. 45 is a diagram showing a configuration of an L1 information processing unit 541 in Embodiment 3.
- FIG. 16 is a diagram showing a configuration of a reception device 600 according to Embodiment 3.
- FIG. 18 is a diagram showing a configuration of a MIMO-PLP processing unit 532 in Embodiment 3.
- FIG. 18 is a diagram showing a configuration of an L1 information processing unit 542 according to Embodiment 3.
- FIG. 18 is a diagram showing a configuration of a reception device 650 in Embodiment 3.
- FIG. 16 is a diagram showing a configuration of a transmission device 700 in Embodiment 4.
- FIG. 25 is a diagram showing a configuration of a MIMO-PLP processing unit 731 in Embodiment 4.
- FIG. 16 is a diagram showing a configuration of a reception device 800 according to Embodiment 4.
- FIG. 26 is a diagram showing a configuration of a MIMO-PLP processing unit 732 in Embodiment 4.
- FIG. 18 is a diagram showing a configuration of a reception device 850 in Embodiment 4.
- FIG. 16 is a diagram showing a configuration of a transmission device 900 in Embodiment 5.
- FIG. 26 is a diagram showing a configuration of a MIMO-PLP processing unit 931 in Embodiment 5.
- FIG. 35 is a diagram showing a configuration of frequency channel inter-exchange section 991 in Embodiment 5.
- 45 is a diagram showing the configuration of an L1 information processing unit 941 according to Embodiment 5.
- FIG. 18 is a diagram showing a configuration of a reception device 1000 according to Embodiment 5.
- FIG. 26 is a diagram showing a configuration of a MIMO-PLP processing unit 932 in Embodiment 5.
- 45 is a diagram showing a configuration of an L1 information processing unit 942 in Embodiment 5.
- FIG. 26 is a diagram showing a configuration of a reception device 1050 according to Embodiment 5.
- 111 is a diagram illustrating the configuration of a transmitting device 1100 according to Embodiment 6.
- FIG. FIG. 55 is a diagram showing a configuration of a MIMO-PLP processing unit 1131 according to Embodiment 6.
- FIG. 35 is a diagram showing a configuration of frequency channel interchanging section 1191 in the sixth embodiment.
- FIG. 55 is a diagram showing a configuration of an L1 information processing unit 1141 in Embodiment 6.
- FIG. 55 is a diagram showing a configuration of a MIMO-PLP processing unit 1132 according to Embodiment 6.
- 55 is a diagram showing a configuration of an L1 information processing unit 1142 in Embodiment 6.
- FIG. 26 is a diagram showing a configuration of a transmitting device 1300 according to Embodiment 7.
- 55 is a diagram showing a configuration of a TS generation unit 1210 in Embodiment 7.
- FIG. 45 is a diagram showing a configuration of an L1 information processing unit 1341 in Embodiment 7.
- FIG. 111 is a diagram illustrating the configuration of a receiving device 1400 according to Embodiment 7.
- FIG. 111 is a diagram showing a configuration of a reception device 1450 in Embodiment 7.
- FIG. 111 is a diagram illustrating a configuration of a transmission device 150 in Embodiment 8.
- FIG. 111 is a diagram showing a configuration of a reception device 270 in Embodiment 8.
- FIG. It is a figure which shows the transmission frame structure of a DVB-NGH system. It is a figure which shows the structure of the transmitter 2000 in the MIMO profile of the conventional DVB-NGH system. It is a figure which shows the structure of the MIMO-PLP process part 2031 in the conventional DVB-NGH system. It is a figure which shows the structure of L1 information processing part 2041 in the conventional DVB-NGH system.
- FIG. 111 is a diagram showing a configuration of a transmitting device 3000 in Embodiment 9.
- FIG. 45 is a diagram showing the configuration of a hierarchical processing unit 3041 in Embodiment 9.
- FIG. 24 is a diagram showing segment configurations of MIMO transmission and MISO transmission in Embodiment 9.
- FIG. 40 is a diagram showing a part of the definition of TMCC signals in Embodiment 9.
- FIG. 55 is a diagram showing a configuration of an existing ISDB-T reception device 3300 in Embodiment 9.
- FIG. 55 is a diagram showing a configuration of a multi-tiered TS reproducing unit 3331 according to Embodiment 9.
- FIG. 35 is a diagram showing the configuration of an FEC decoding unit 3333 in a ninth embodiment.
- 111 is a diagram illustrating the configuration of a reception device 3500 according to Embodiment 9.
- FIG. FIG. 55 is a diagram showing a configuration of a multi-tiered TS reproducing unit 3531 according to Embodiment 9.
- 111 is a diagram illustrating the configuration of a transmitting device 3600 according to Embodiment 10.
- FIG. Fig. 34 is a diagram illustrating the configuration of an LDPC hierarchical processing unit 3645 according to a tenth embodiment.
- FIG. 24 is a diagram showing the definition of a TMCC signal related to LDPC coding in a tenth embodiment.
- 111 is a diagram showing a configuration of a reception device 3800 in Embodiment 10. [FIG. FIG.
- FIG. 55 is a diagram showing a structure of a multi-tiered TS reproducing unit 383 in the tenth embodiment.
- FIG. 35 is a diagram showing the configuration of an FEC decoding unit 3833 in the tenth embodiment.
- FIG. 55 is a diagram showing a configuration of a transmitting device 4000 in Embodiment 11.
- 55 is a diagram showing a configuration of a TS generation unit 4210 in Embodiment 11.
- [FIG. FIG. 55 is a diagram showing a configuration of a transmitting device 4300 in Embodiment 12. It is a figure which shows the structure of the transmitter 5000 in an ISDB-T system. It is a figure which shows the structure of the hierarchy process part 5041 in ISDB-T system. It is a figure which shows the structure of the frequency interleaving part 5071 in ISDB-T system. It is a figure which shows the segment structure of ISDB-T system.
- DVB-NGH DVD-Next Generation Handheld
- MIMO Multiple Input Multiple Output
- FIG. 53 shows a transmission frame configuration of the DVB-NGH system.
- the DVB-NGH system has a concept called PLP (Physical Layer Pipe), and is characterized in that transmission parameters such as a modulation system and a coding rate can be set independently for each PLP.
- the number of PLPs is at least one and at most 255, and FIG. 53 shows an example in which the number of PLPs is ten.
- the transmission frame configuration is shown below.
- Frame P1 symbol + aP1 symbol + P2 symbol + data symbol
- P1 symbol 1 symbol
- aP1 symbol 0 to 1 symbol
- P2 symbol N_P2 symbol (N_P2 is unique by FFT size)
- the P1 symbol transmits the format of a frame starting from the P1 symbol (NGH_SISO, NGH_MISO, ESC indicating other, etc.) by 3 bits of S1.
- the P1 symbol transmits information such as the FFT size in the subsequent P2 symbol and data symbol when the format of the frame is NGH_SISO or NGH_MISO by 4 bits of S2. Also, if the frame format of the P1 symbol is ESC indicating other than that of 4 bits of S2, then the format (such as NGH_MIMO) of the frame is transmitted.
- the aP1 symbol transmits information such as the FFT size in the subsequent P2 symbol and data symbol by the 3 bits of S3.
- the P2 symbol includes L1 signaling information in the first half and main signal data in the remaining second half.
- the data symbols include the continuation of the main signal data.
- the L1 signaling information to be transmitted by the P2 symbol is mainly composed of L1-pre information for transmitting information common to all PLPs and L1-post information for mainly transmitting information for each PLP.
- FIG. 53 shows the configuration of LC (Logical Channel) type A in which L1-post information is transmitted following L1-pre information.
- LC type B the transmission order of L1-post information is not limited to that of L1-pre information.
- FIG. 54 is a diagram showing the configuration of the transmission apparatus 2000 in the MIMO profile of the DVB-NGH system (see Non-Patent Document 3).
- the transmitting apparatus 2000 shows an example in which two streams are input, ie, two PLPs are generated, and includes a MIMO-PLP processing unit 2031 for each PLP.
- the transmission apparatus 2000 further includes an L1 (Layer-1) information processing unit 2041 and a frame configuration unit 2051.
- the transmission apparatus 2000 further includes an OFDM signal generation unit 2061, a D / A conversion unit 2091 and a frequency conversion unit 2096 for each transmission antenna.
- the MIMO-PLP processing unit 2031 for each PLP corresponds the input stream to the PLP, performs processing relating to that PLP, and outputs mapping data (cell) of each PLP for two transmit antennas (Tx-1, Tx-2) Do.
- Examples of the input stream include TS (Transport Stream), service components such as audio and video included in a program with TS, and service subparts such as Base layer and Enhancement layer of video using SVC (Scalable Video Coding). Components and the like, and one example of source coding is H.264. H.264 and HEVC (H. 265).
- the L1 information processing unit 2041 performs processing on L1 information, and outputs mapping data of the L1 information for two transmission antennas (Tx-1, Tx-2).
- the frame configuration unit 2051 includes mapping data of each PLP for two transmission antennas (Tx-1 and Tx-2) output from the MIMO-PLP processing unit 2031, and two transmission antennas output from the L1 information processing unit 2041.
- mapping data of L1 information for (Tx-1, Tx-2) a transmission frame of the DVB-NGH system shown in FIG. 53 is generated and output.
- the OFDM signal generation unit 2061 for each of two transmission antennas adds pilot signals, IFFT (Inverse Fast Fourier Transform), and GI insertions to the transmission frame configuration of the DVB-NGH system output from the frame configuration unit 2051, respectively. , P1 symbols and aP1 symbols are inserted, and a digital baseband transmission signal of the DVB-NGH system is output.
- the D / A conversion unit 2091 for each of two transmission antennas performs D / A conversion on the digital baseband transmission signal of the DVB-NGH system output from the OFDM signal generation unit 2061, and the analog of the DVB-NGH system Output baseband transmission signal.
- the frequency converter 2096 for each of the two transmitting antennas performs frequency conversion to the frequency channel A for the analog baseband transmission signal of the DVB-NGH system output from the D / A converter 2091 and An analog RF transmission signal is output from a transmission antenna (not shown).
- the MIMO-PLP processing unit 2031 includes an input processing unit 2071, a forward error correction (FEC) coding unit 2072, a mapping unit 2073, a MIMO coding unit 2076, and an interleaving unit 2074 for each of two transmission antennas.
- FEC forward error correction
- the input processing unit 2071 converts the input stream into a baseband frame.
- the FEC encoding unit 2072 performs BCH encoding and LDPC encoding for each baseband and frame, adds parity bits, and generates an FEC frame.
- the mapping unit 2073 performs mapping to I and Q coordinates, converts it into an FEC block, and outputs each mapping data (cell).
- the MIMO coding unit 2076 performs MIMO coding.
- the interleaving unit 2074 for each of two transmission antennas rearranges mapping data (cell) in a TI (Time Interleaving) block including an integer number of FEC blocks.
- the L1 information processing unit 2041 includes an L1 information generation unit 2081, an FEC encoding unit 2082, a mapping unit 2083, and a MIMO encoding unit 2076.
- the L1 information generation unit 2081 In the L1 information processing unit 2041, the L1 information generation unit 2081 generates transmission parameters and converts them into L1-pre information and L1-post information.
- the FEC coding unit 2082 performs BCH coding and LDPC coding for each of L1-pre information and L1-post information, and adds parity bits.
- a mapping unit 2083 performs mapping to I and Q coordinates, and outputs mapping data (cell).
- the MIMO coding unit 2076 performs MIMO coding.
- the base band refers to the above-described frequency channel, which corresponds to CH-A in FIG. That is, the baseband refers to the bandwidth of the modulated RF transmit signal.
- the LTE-Advanced standard (LTE Rel. 10) defines a MIMO transmission technology using a plurality of basic bands.
- modulation and channel coding are performed independently in each baseband (CC: Component Carrier) in units of transport blocks, and each is mapped to only one CC. Therefore, the frequency diversity effect by channel coding is limited within the baseband.
- CC Component Carrier
- Patent Document 1 shows a configuration in which in MIMO transmission using a plurality of basic bands, interleaving is collectively performed on a plurality of basic bands prior to MIMO coding, a description related to specific processing of interleaving Has not been done.
- the inventions according to the first to eighth embodiments described below are made to solve this problem, and a transmitting apparatus, a transmitting method, a receiving apparatus, and a receiving method that exhibit frequency diversity effects for a plurality of basic bands. , Integrated circuit, and program.
- FIG. 1 is a diagram showing the configuration of transmitting apparatus 100 according to Embodiment 1 of the present invention.
- the same components as those of the conventional transmission apparatus are denoted by the same reference numerals, and the description thereof is omitted.
- the transmitting apparatus 100 shown in FIG. 1 is different from the conventional transmitting apparatus 2000 shown in FIG. 54 in the MIMO-PLP processing unit 2031, the L1 information processing unit 2041, and the frame configuration unit 2051 as the MIMO-PLP processing unit 131 and the L1 information processing.
- the configuration is such that the unit 141 and the frame configuration unit 151 are replaced respectively.
- the transmitting apparatus 100 further includes an OFDM signal generator 2061 and a D / A converter 2091 for each frequency channel of each transmitting antenna.
- the transmitting apparatus 100 further includes a frequency conversion unit 2096 for the frequency channel A and a frequency conversion unit 196 for the frequency channel B for each transmission antenna.
- the MIMO-PLP processing unit 131 for each PLP associates the input stream with the PLP, performs processing relating to the PLP, and two frequency channels (CH-A, CH-A, two) for each of two transmit antennas (Tx-1, Tx-2). Output mapping data (cell) of each PLP to CH-B).
- the L1 information processing unit 141 performs processing on L1 information, and outputs mapping data of the L1 information for two frequency channels (CH-A and CH-B) of two transmission antennas (Tx-1 and Tx-2). Do.
- Frame configuration section 151 mapping data of each PLP for each of two frequency channels (CH-A, CH-B) of two transmission antennas (Tx-1, Tx-2) output from MIMO-PLP processing section 131 Using the mapping data of L1 information for the two frequency channels (CH-A and CH-B) of each of the two transmission antennas (Tx-1 and Tx-2) output from the L1 information processing unit 141.
- a transmission frame indicated by 53 is generated and output.
- the point different from the conventional transmitting apparatus 2000 shown in FIG. 54 is that transmission frames are configured in two frequency channels (CH-A, CH-B) of two transmitting antennas (Tx-1, Tx-2) respectively. It is doing.
- the OFDM signal generation unit 2061 and the D / A conversion unit 2091 for each frequency channel of two transmission antennas perform the same operation as the conventional transmission apparatus 2000 shown in FIG.
- the frequency conversion unit 2096 for each of two transmission antennas for the frequency channel A performs frequency conversion on the frequency channel A, and outputs an analog RF transmission signal from a transmission antenna (not shown).
- frequency conversion unit 196 for each of two transmission antennas for frequency channel B performs frequency conversion on frequency channel B, and outputs an analog RF transmission signal from a transmission antenna (not shown).
- FIG. 2 is a diagram showing the configuration of the MIMO-PLP processing unit 131. As shown in FIG. Compared to the conventional MIMO-PLP processing unit 2031 shown in FIG. 55, the MIMO coding unit 2076 is replaced with a MIMO coding unit 176. The MIMO-PLP processing unit 131 further includes an interleaving unit 2074 for each frequency channel of each transmission antenna.
- the MIMO coding unit 176 performs precoding on each input FEC block using four pieces of mapping data (cells) from the beginning to two transmit antennas. (Tx-1, Tx-2) Outputs MIMO encoded data for each of two frequency channels (CH-A, CH-B).
- mapping data (cell) of each FEC block is represented as s1, s2, ..., sNcells (Ncells: number of cells in the FEC block) from the beginning
- the input vector s (s4k + 1, s4k + 2, s4k + 3, s4k + 4) T
- the output vector z (z1A_k, z2A_k, z1B_k, z2B_k) T is expressed as equation (1) for 0, 1,..., (Ncells / 4) ⁇ 1).
- zPQ_k is output data (MIMO encoded data) for the transmission antenna P and frequency channel Q
- F is a fixed precoding matrix expressed by equation (2).
- wMN does not have to be all complex numbers, and real elements may be included.
- the precoding may be performed by multiplying the equation (1) by the phase change matrix X (k) which changes more regularly.
- phase change matrix X (k) Perform phase change of 9. Therefore, by causing regular fluctuations in the MIMO transmission path, it is possible to obtain an effect that the reception quality of data in the receiver in the LOS (Line Of Sight) environment in which the direct wave is dominant can be improved.
- this example of phase change is merely an example, and the period is not limited to nine. If the number of cycles increases, it may be possible to promote the improvement of the reception performance (more accurately, the error correction performance) of the receiving apparatus by that much (though it is not always better if the cycle is larger, Small values such as are likely to be better avoided).
- phase change example shown in the above equations (3) and (4) shows a configuration in which only the predetermined phase (in the above equation, 2 ⁇ / 9 radians in each case) is sequentially rotated
- the phase of the modulation signal is regularly changed, and the degree of the phase to be changed is as uniform as possible, for example, - ⁇ radian to ⁇ radian
- each element of the output vector z is expressed as shown in Expressions (5) to (8).
- f1A, f2A, f1B and f2B represent functions.
- the interleaving unit 2074 for each frequency channel of two transmission antennas performs the same operation as that of the conventional transmission apparatus 2000 shown in FIG. Thereby, the component of each mapping data (cell) in the FEC block is transmitted from all two frequency channels (CH-A, CH-B) of each of two transmitting antennas (Tx-1, Tx-2). .
- FIG. 3 is a diagram showing the configuration of the L1 information processing unit 141. As shown in FIG. Compared with the conventional L1 information processing unit 2041 shown in FIG. 56, the L1 information generating unit 2081 and the MIMO encoding unit 2076 are replaced with an L1 information generating unit 181 and a MIMO encoding unit 176, respectively.
- the L1 information generation unit 181 generates transmission parameters for two frequency channels (CH-A, CH-B).
- the MIMO coding unit 176 performs the same operation as the MIMO coding unit 176 in FIG. 2 described above. Thereby, the component of each mapping data (cell) in the FEC block of L1 information is obtained from all two frequency channels (CH-A and CH-B) of each of two transmitting antennas (Tx-1 and Tx-2). Will be sent.
- each mapping data (cell) in an FEC block is transmitted from all frequency channels of all transmission antennas, thereby relating to a plurality of base bands. It is possible to provide a transmitting apparatus, a transmitting method, and a program that can fully exhibit the frequency diversity effect. In particular, it is characterized in that the result of the MIMO precoding process is output over a plurality of base bands.
- the fundamental band here refers to the above-mentioned frequency channel, and corresponds to CH-A and CH-B in FIG. That is, the baseband refers to the bandwidth of the modulated RF transmit signal.
- the baseband refers to the bandwidth of the modulated RF transmit signal.
- transmission using a plurality of base bands means generating and simultaneously transmitting an RF transmission signal storing the content of the common service in each of the plurality of base bands.
- the plurality of base bands may be a plurality of base bands adjacent to each other, or a plurality of non-adjacent base bands including frequency channels used in other services or frequency bands in between. good.
- FIG. 4 is a diagram showing a configuration of receiving apparatus 200 according to Embodiment 1 of the present invention.
- the receiving device 200 of FIG. 4 corresponds to the transmitting device 100 of FIG. 1 and reflects the function of the transmitting device 100.
- the receiving apparatus 200 includes a tuner unit 205A for one frequency channel (CH-A), an A / D conversion unit 208A, a demodulation unit 211A, and frequency deinterleaving for each reception antenna (Rx-1, Rx-2).
- the receiving apparatus 200 includes, for each receiving antenna (Rx-1, Rx-2), a tuner unit 205B for the other frequency channel (CH-B), an A / D conversion unit 208B, a demodulation unit 211B, and frequency de-
- the interleaving / L1 information deinterleaving unit 215B, the PLP deinterleaving unit 221B, and the selecting unit 231B are provided.
- the receiving apparatus 200 further includes a MIMO demapping unit 232 and an FEC decoding unit 233.
- the tuner unit 205A-1 When an analog RF transmission signal is input from one of the receiving antennas Rx-1, the tuner unit 205A-1 selectively receives a signal of one frequency channel (CH-A) and down-converts the signal into a predetermined band.
- the A / D conversion unit 208A-1 performs A / D conversion and outputs a digital reception signal.
- the demodulation unit 211A-1 performs OFDM demodulation, and outputs cell data of I ⁇ Q coordinates and a transmission path estimated value.
- Frequency de-interleaving and L1 information de-interleaving section 215A-1 performs frequency de-interleaving on the cell data of the PLP including the selected program data and the channel estimation value, and demultiplexes the cell data of the L1 information and the channel estimation value. Perform interleaving. The cell data of the deinterleaved L1 information and the channel estimation value are selected by the selection unit 231A-1.
- the tuner unit 205A-2 When an analog RF transmission signal is input from the other reception antenna Rx-2, the tuner unit 205A-2, the A / D conversion unit 208A-2, the demodulation unit 211A-2, frequency deinterleave and L1 information deinterleave
- the unit 215A-2, the PLP deinterleave unit 221A-2, and the selection unit 231A-2 perform the same operation as the above-described Rx-1 (select reception of CH-A).
- the tuner unit 205B-1 selectively receives the signal of the other frequency channel (CH-B) and down-converts the signal to a predetermined band.
- the A / D conversion unit 208B-1, the demodulation unit 211B-1, the frequency deinterleaving / L1 information deinterleaving unit 215B-1, the PLP deinterleaving unit 221B-1, and the selection unit 231B-1 are the Rx described above. The same operation as -1 (selective reception of CH-A) is performed.
- the tuner unit 205B-2 When an analog RF transmission signal is input from the reception antenna Rx-2, the tuner unit 205B-2, A / D conversion unit 208B-2, demodulation unit 211B-2, frequency deinterleave and L1 information deinterleaving unit
- the unit 215 B- 2, the PLP de-interleaving unit 221 B- 2, and the selection unit 231 B- 2 perform the same operation as the above-described Rx- 1 (selective reception of CH-A).
- the MIMO demapping unit 232 performs MIMO demapping processing on cell data and channel estimation values of L1 information output from four selection units (231A-1, 231A-2, 231B-1, and 231B-2).
- the FEC decoding unit 233 performs LDPC decoding processing and BCH decoding processing. Thereby, the L1 information is decoded.
- the four PLP deinterleave units 221 are PLPs including a program selected by the user based on the scheduling information included in the decoded L1 information. For example, the cell data of the PLP-1) shown in FIG. 1 and the channel estimation value are extracted, and reordering reverse to the interleaving processing on the transmission side is performed.
- the MIMO demapping unit 232 performs a MIMO demapping process on cell data and channel estimation values of PLPs output from four selection units (231A-1, 231A-2, 231B-1, and 231B-2).
- the FEC decoding unit 233 performs LDPC decoding processing and BCH decoding processing. Thereby, PLP data is decoded.
- components other than the tuner units 205A and 205B may be included in the receiving device 200 in FIG. 4 to form an integrated circuit 240.
- the operation of the MIMO demapping unit 232 will be described below.
- yPQ_k is the receiving antenna P
- input data for the frequency channel Q H is the channel matrix represented by equation (10)
- n (n1A_k, n2A_k, n1B_k, n2B_k) T is a noise vector
- nPQ_k is the average Value 0, variance ⁇ 2 i. i. d. Complex Gaussian noise.
- MLD maximum likelihood decoding
- the process of the MIMO demapping unit 232 is not limited to the maximum likelihood decoding, and another method such as ZF (Zero Forcing) may be used.
- the FEC decoder 233 performs LDPC decoding and BCH decoding on the vector estimated value s ′ of each FEC block output from the MIMO demapping unit 232, and outputs a decoding result.
- a receiving apparatus for receiving the components of each mapping data (cell) in the FEC block and signals transmitted from all frequency channels of all transmitting antennas, A receiving method and program can be provided.
- the MIMO-PLP processing unit 131 shown in FIG. 2 may be replaced with the MIMO-PLP processing unit 132 shown in FIG.
- the MIMO-PLP processing unit 132 shown in FIG. 5 has a configuration in which the MIMO coding unit 176 is replaced with a MIMO coding unit 177 as compared to the MIMO-PLP processing unit 131 shown in FIG. Furthermore, two interleaving units 2074-3 and 2074-4 for frequency channel B (CH-B) are replaced with interleaving units 174-3 and 174-4, respectively.
- CH-B frequency channel B
- the MIMO coding unit 177 may perform precoding by multiplying the phase change matrix X (k) shown in equation (11).
- ⁇ / 9 can be mentioned, but it is not limited thereto.
- the initial value is 0 radian for one frequency channel (CH-A)
- the other frequency channel (CH-B) is subjected to phase change of period 9 which changes by 2 ⁇ / 9 radians at an initial value of ⁇ / 9 radians.
- phase change matrix X (k) shown in equation (11) reduces the correlation to make the phase change patterns of the two frequency channels (CH-A, CH-B) different, and the reception quality of the data in the receiving apparatus Can be obtained.
- the method of making the phase change patterns different is not limited to this, and, for example, different periods of phase change may be used.
- two interleaving units 174-3 and 174-4 for frequency channel B have different patterns from those of two interleaving units 2074-1 and 2074-2 for frequency channel A (CH-A). Reordering may be performed.
- An example of the different pattern is, but not limited to, the number of frames to be interleaved.
- the two interleaving units 2074-1 and 2074-2 for the same frequency channel A (CH-A) rearrange the same pattern, and 2 for the same frequency channel B (CH-B).
- the two interleaving units 174-1 and 174-2 are points that rearrange the same pattern.
- phase change pattern of the phase change matrix X (k) different for two frequency channels (CH-A, CH-B) and making the interleaving reorder pattern different are simultaneously applied. You may apply only one or the other.
- the L1 information processing unit 141 shown in FIG. 3 may be replaced with the L1 information processing unit 142 shown in FIG.
- the L1 information processing unit 142 illustrated in FIG. 6 has a configuration in which the MIMO encoding unit 176 is replaced with a MIMO encoding unit 177 as compared to the L1 information processing unit 141 illustrated in FIG. 3.
- the MIMO coding unit 177 performs the same operation as the MIMO coding unit 177 in FIG.
- the phase change matrix X (k) shown in the equation (11) reduces the correlation and makes the data in the receiving apparatus different by changing the phase change patterns of the two frequency channels (CH-A, CH-B). The effect of improving the reception quality can be obtained.
- FIG. 7 shows the configuration of the receiving apparatus 250 when the MIMO-PLP processing unit 132 shown in FIG. 5 and the L1 information processing unit 142 shown in FIG. 6 are applied.
- the receiver 250 shown in FIG. 7 replaces the PLP deinterleaver 221B for the frequency channel B (CH-B) with the PLP deinterleaver 222B as compared to the receiver 200 shown in FIG.
- the MIMO demapping unit 235 is used instead of the H.232.
- PLP deinterleave unit 222B for frequency channel B (CH-B) performs reverse reordering to interleave unit 174 in FIG.
- the MIMO demapping unit 235 takes account of the phase change matrix X (k) shown in equation (11) instead of the phase change matrix X (k) shown in equation (4) to obtain equations (9) and (10).
- components other than the tuner units 205A and 205B may be included in the receiving device 250 of FIG. 7 as an integrated circuit 241.
- FIG. 8 is a diagram showing the configuration of transmitting apparatus 300 according to Embodiment 2 of the present invention.
- the same components as the conventional transmission apparatus and the transmission apparatus of the first embodiment use the same reference numerals, and descriptions thereof will be omitted.
- the transmitting apparatus 300 of FIG. 8 is different from the transmitting apparatus 100 according to the first embodiment shown in FIG. 1 in that the MIMO-PLP processing unit 131 and the L1 information processing unit 141 are replaced by the MIMO-PLP processing unit 331 and the L1 information processing unit 341. Each configuration is replaced.
- FIG. 9 is a diagram showing the configuration of the MIMO-PLP processing unit 331. As shown in FIG. Compared to the MIMO-PLP processing unit 131 in the first embodiment shown in FIG. 2, an S / P (Serial to Parallel) conversion unit 378 is added. Furthermore, the MIMO coding unit 176 is replaced with two MIMO coding units 376A and 376B.
- S / P Serial to Parallel
- the S / P conversion unit 378 sequentially performs mapping data (cells) two by two from the beginning on the MIMO coding unit 376A, MIMO coding for each FEC block input.
- the MIMO coding unit 376A performs precoding on half of the input mapping data (cell) of each FEC block using two from the beginning, and transmits two transmit antennas (Tx ⁇ 1, Tx ⁇ Output the MIMO coded data for 2).
- the mapping data (cell) of each FEC block is represented as s1, s2, ..., sNcells (Ncells: number of cells in the FEC block) from the beginning
- the input vector s_A to the MIMO coding unit 376A (s4k + 1, s4k + 2) T
- zPQ_k is output data (MIMO encoded data) for the transmission antenna P and frequency channel Q
- F_A is a fixed precoding matrix represented by equation (13).
- wMN_A need not be all complex numbers, and may include real elements.
- the precoding may be performed by multiplying the equation (12) by the phase change matrix X_A (k) which changes more regularly.
- phase change matrix X_A (k) phase change of period 9 changing by 2 ⁇ / 9 radians is performed on the MIMO encoded data sequence for the transmission antenna 2 (Tx-2). Therefore, by causing regular fluctuations in the MIMO transmission path, it is possible to obtain an effect that the reception quality of data in the receiver in the LOS (Line Of Sight) environment in which the direct wave is dominant can be improved.
- this example of phase change is merely an example, and the period is not limited to nine. If the number of cycles increases, it may be possible to promote the improvement of the reception performance (more accurately, the error correction performance) of the receiving apparatus by that much (though it is not always better if the cycle is larger, Small values such as are likely to be better avoided.)
- the configuration is shown in which the predetermined phase (in the above equation, each 2 ⁇ / 9 radian) is sequentially rotated. It is also possible to change the phase randomly instead of causing it to What is important in the regular change of the phase is that the phase of the modulation signal is regularly changed, and the degree of the phase to be changed is as uniform as possible, for example, - ⁇ radian to ⁇ radian However, it may be random although it is desirable to have a uniform distribution.
- the MIMO coding unit 376B outputs the MIMO coded data for two transmission antennas (Tx-1, Tx-2) in the same manner as the MIMO coding unit 376A.
- F_B is a fixed precoding matrix represented by Formula (17).
- the precoding may be performed by multiplying the equation (16) by the phase change matrix X_B (k) which changes regularly.
- f1 and f2 represent functions.
- the interleaving unit 2074 for each frequency channel of two transmission antennas performs the same operation as the interleaving unit 2074 in FIG.
- half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A).
- the remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the MIMO-PLP processing unit 331 shown in FIG. 9 may be replaced with the MIMO-PLP processing unit 332 shown in FIG.
- the MIMO-PLP processing unit 332 shown in FIG. 10 is different from the S / P conversion unit 378 downstream of the mapping unit 2073 in the S / P conversion unit 379 upstream of the mapping unit 2073. It is the replaced configuration. Furthermore, two mapping units 2073 are provided.
- the S / P conversion unit 379 sequentially maps bit groups, which become mapping data (cells) two by two from the beginning, to each FEC frame output from the FEC encoding unit 2072, the mapping unit 2073 A, and a mapping unit 2073B, mapping unit 2073A, mapping unit 2073B, and so on.
- the mapping unit 2073A and the mapping unit 2073B perform the same operation as the mapping unit 2073 in FIG. Therefore, as in the MIMO-PLP processing unit 331 shown in FIG. 9, half of the mapping data (cell) of each FEC block is distributed to the MIMO coding units 376A and 376B.
- the other operations are similar to those of the MIMO-PLP processing unit 331 shown in FIG.
- FIG. 11 is a diagram showing the configuration of the L1 information processing unit 341. As shown in FIG. Compared to the L1 information processing unit 141 in the first embodiment shown in FIG. 3, an S / P conversion unit 378 is added. Furthermore, the MIMO coding unit 176 is replaced with two MIMO coding units 376A and 376B.
- the S / P conversion unit 378 sequentially performs mapping data (cells) two by two from the beginning for each FEC block to be input, as in the operation in FIG.
- the MIMO coding unit 376A and the MIMO coding unit 376B operate similarly to the operation in FIG. 9 and use two from the beginning for the half mapping data (cell) in each FEC block to be input. Precoding is performed to output MIMO encoded data for two transmit antennas (Tx-1, Tx-2). Thus, half of the mapping data (cell) in the FEC block of L1 information is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A). . The remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the L1 information processing unit 341 shown in FIG. 11 may be replaced with the L1 information processing unit 342 shown in FIG.
- the L1 information processing unit 342 shown in FIG. 12 replaces the S / P conversion unit 378 in the latter stage of the mapping unit 2083 with the S / P conversion unit 379 in the former stage of the mapping unit 2083 compared with the 1 information processing unit 341 shown in FIG. It is a structure. Furthermore, two mapping units 2083 are provided.
- the S / P converter 379 becomes two mapping data (cells) from the top for each FEC frame output from the FEC encoder 2082 in the same manner as the operation in FIG.
- the bit groups are sequentially allocated to the mapping unit 2083A, the mapping unit 2083B, the mapping unit 2083A, the mapping unit 2083B, and so on.
- the mapping unit 2083A and the mapping unit 2083B perform the same operation as the mapping unit 2083 in FIG. Therefore, as in the L1 information processing unit 341 illustrated in FIG. 11, half of the mapping data (cell) in the FEC block of the L1 information is distributed to the MIMO coding units 376A and 376B.
- the other operations are similar to those of the L1 information processing unit 341 shown in FIG.
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1 and Tx-2), and the remaining half component is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the present invention can provide a transmitting apparatus, a transmitting method, and a program that can fully exhibit the frequency diversity effect regarding.
- FIG. 13 is a diagram showing a configuration of receiving apparatus 400 according to Embodiment 2 of the present invention.
- the receiving device 400 of FIG. 13 corresponds to the transmitting device 300 of FIG. 8 and reflects the function of the transmitting device 300.
- the same components as the conventional receiving apparatus and the receiving apparatus of the first embodiment use the same reference numerals, and the description thereof is omitted.
- the receiver 400 of FIG. 13 has a configuration in which the MIMO demapping unit 232 is replaced with two MIMO demapping units 432 as compared to the receiver 200 in the first embodiment shown in FIG. 4. Furthermore, a P / S conversion unit 435 is added.
- yPQ_k is the receiving antenna P
- input data for the frequency channel Q H_A is the channel matrix represented by equation (25)
- nPQ_k is an average value of 0, variance ⁇ 2 i. i. d. Complex Gaussian noise.
- MLD maximum likelihood decoding
- the processing of the MIMO demapping unit 432A is not limited to maximum likelihood decoding, and another method such as ZF may be used.
- MLD Maximum Likelihood Decoding
- the processing of the MIMO demapping unit 432B is not limited to the maximum likelihood decoding, and another method such as ZF (Zero Forcing) may be used.
- Equations (25) and (27) do not include 4 rows and 4 columns, but includes a 2 ⁇ 2 channel matrix H. Therefore, compared with the MIMO demapping unit 232 of the first embodiment, the amount of operation in the MIMO demapping units 432A and 432B is reduced.
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1, Tx-2) A receiver for transmitting signals from the other half, and receiving the signals transmitted from the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B) , A receiving method, and a program can be provided.
- components other than the tuner units 205A and 205B may be included in the receiving device 400 of FIG. 13 to form an integrated circuit 440.
- the MIMO-PLP processing unit 331 shown in FIG. 9 may be replaced with the MIMO-PLP processing unit 333 shown in FIG.
- the MIMO-PLP processing unit 333 shown in FIG. 14 has a configuration in which the MIMO coding unit 376B is replaced with a MIMO coding unit 377B as compared to the MIMO-PLP processing unit 331 shown in FIG.
- two interleaving units 2074-3 and 2074-4 for frequency channel B (CH-B) are replaced with interleaving units 174-3 and 174-4, respectively.
- MIMO coding section 377B may perform precoding using fixed precoding matrix F_B shown in equation (28).
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- MIMO coding section 377B may perform precoding by multiplying by phase change matrix X_B (k) shown in equation (29).
- (pi) / 9 is mentioned as an example of the value of (theta) in Formula (29), It is not limited to this.
- the phase change matrix X_B (k) shown in equation (29) with respect to the MIMO encoded data sequence for transmit antenna 2 (Tx-2), one frequency channel (CH-A) has an initial value of 0 radian, A phase change of period 9 which changes by 2 ⁇ / 9 radians is performed, and a phase change of period 9 which changes by 2 ⁇ / 9 radians is performed with the initial value ⁇ / 9 radians to the other frequency channel (CH-B) Ru.
- Two frequency channels are transmitted from the same transmit antenna group (Tx-1, Tx-2) and received by the same receive antenna group (Rx-1, Rx-2)
- Tx-1, Tx-2 transmit antenna group
- Rx-1, Rx-2 receive antenna group
- the phase change matrices X_A (k) and X_B (k) shown in the equations (15) and (29), respectively, are correlated by making the phase change patterns of the two frequency channels (CH-A, CH-B) different. Can be reduced to improve the reception quality of data in the receiving apparatus.
- two interleaving sections 174-3 and 174-4 for frequency channel B are the same as in ⁇ Modification of transmitting apparatus and transmitting method in the first embodiment>. Patterns different from the two interleave units 2074-1 and 2074-2 for A) may be rearranged. As a result, the correlation of the channel characteristics between the two frequency channels (CH-A, CH-B) is reduced without increasing the amount of operation in MIMO demapping, and the reception quality of data in the receiver is improved. The effect can be obtained.
- making the reordering patterns of interleaving different may all be applied at the same time, any two may be applied simultaneously, or only one may be applied.
- the MIMO-PLP processing unit 332 shown in FIG. 10 may be replaced with the MIMO-PLP processing unit 334 shown in FIG. A configuration in which the mapping unit 2073B and the MIMO coding unit 376B are replaced with a mapping unit 373B and a MIMO coding unit 377B, respectively, compared to the MIMO-PLP processing unit 332 shown in FIG. It is. Furthermore, two interleaving units 2074-3 and 2074-4 for frequency channel B (CH-B) are replaced with interleaving units 174-3 and 174-4, respectively.
- CH-B frequency channel B
- mapping section 373B for frequency channel B may perform mapping of a pattern different from mapping section 2073A for frequency channel A (CH-A).
- different patterns include, but are not limited to, the mapping units 2073A and 373B use uniform mapping and non-uniform mapping, respectively.
- uniform mapping and non-uniform mapping include, but are not limited to, 64-QAM (Quadrature Amplitude Modulation) and NU (Non Uniform) -64 QAM in Non-Patent Document 3, respectively.
- the MIMO coding unit 377 B and the interleaving units 174-3 and 174-4 perform the same operations as in FIG.
- mapping patterns for two frequency channels CH-A, CH-B
- different fixed precoding matrices F_A and F_B phase change matrices X_A (k) and X_B (k)
- Differentiating the phase change pattern of p and changing the interleaving reordering pattern may all be applied simultaneously, or any two or three may be applied simultaneously, or only one of them may be applied. It may apply.
- the L1 information processing unit 341 shown in FIG. 11 may be replaced with the L1 information processing unit 343 shown in FIG.
- the L1 information processing unit 343 illustrated in FIG. 16 has a configuration in which the MIMO coding unit 376B is replaced with a MIMO coding unit 377B as compared to the L1 information processing unit 341 illustrated in FIG.
- the MIMO coding unit 377B performs the same operation as the MIMO coding unit 377B in FIG. As a result, the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- the L1 information processing unit 342 shown in FIG. 12 may be replaced with the L1 information processing unit 344 shown in FIG.
- the L1 information processing unit 344 shown in FIG. 17 has a configuration in which the mapping unit 2083B and the MIMO encoding unit 376B are replaced with a mapping unit 383B and a MIMO encoding unit 377B, respectively, compared to the L1 information processing unit 342 shown in FIG. .
- mapping section 383B for frequency channel B may perform mapping of a pattern different from mapping section 2083A for frequency channel A (CH-A) in the same manner as mapping section 373B in FIG. .
- different patterns include, but are not limited to, the mapping units 2083A and 383B use uniform mapping and non-uniform mapping, respectively.
- uniform mapping and non-uniform mapping include, but are not limited to, 64-QAM (Quadrature Amplitude Modulation) and NU (Non Uniform) -64 QAM in Non-Patent Document 3, respectively.
- the MIMO coding unit 377B performs the same operation as the MIMO coding unit 377B in FIG. As a result, the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- mapping patterns for two frequency channels CH-A, CH-B
- different fixed precoding matrices F_A and F_B phase change matrices X_A (k) and X_B (k)
- the different phase change patterns may be applied simultaneously, any two may be applied simultaneously, or only one may be applied.
- FIG. 18 The configuration of the receiving device 450 is shown in FIG.
- the receiver 450 shown in FIG. 18 is different from the receiver 400 shown in FIG. 13 in the PLP deinterleaver 221B and the MIMO demapping unit 432B for the frequency channel B (CH-B) as the PLP deinterleaver 222B.
- the MIMO demapping unit 434B is different from the receiver 400 shown in FIG. 13 in the PLP deinterleaver 221B and the MIMO demapping unit 432B for the frequency channel B (CH-B) as the PLP deinterleaver 222B.
- CH-B frequency channel B
- the PLP deinterleave unit 222B for the frequency channel B (CH-B) performs the same operation as that of FIG.
- MIMO demapping section 434 B for frequency channel B (CH-B) takes account of fixed precoding matrix F_B shown in equation (28) instead of fixed precoding matrix F_B shown in equation (17), Maximum likelihood decoding (MLD) is performed using Eq.
- MIMO demapping section 434B for frequency channel B (CH-B) takes into account phase change matrix X_B (k) shown in equation (29) instead of phase change matrix X_B (k) shown in equation (19).
- Maximum likelihood decoding (MLD) is performed using Equations (26) and (27).
- mapping of patterns in which frequency channel B (CH-B) differs from frequency channel A (CH-A) is performed. If so, maximum likelihood decoding (MLD) is performed taking that into consideration as well.
- components other than the tuner units 205A and 205B may be included in the receiving device 450 of FIG. 18 to form an integrated circuit 441.
- FIG. 19 is a diagram showing the configuration of transmitting apparatus 500 according to Embodiment 3 of the present invention.
- the same components of the conventional transmission apparatus and the transmission apparatus of the first and second embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the transmitting apparatus 500 in FIG. 19 is different from the transmitting apparatus 100 in the first embodiment shown in FIG. 1 in that the MIMO-PLP processing unit 131 and the L1 information processing unit 141 are replaced by the MIMO-PLP processing unit 531 and the L1 information processing unit 541. Each configuration is replaced.
- FIG. 20 is a diagram showing a configuration of the MIMO-PLP processing unit 531.
- a configuration is such that a frequency channel interchanging unit 591 is added.
- the S / P conversion unit 379 at the rear stage of the FEC coding unit 2072 is replaced with the S / P conversion unit 581 at the front stage of the FEC coding unit 2072 and two FEC coding units 2072 are provided.
- the S / P conversion unit 581 sequentially performs FEC encoding unit 2072A, FEC encoding unit 2072B, for baseband / frames output from the input processing unit 2071 in order of baseband / frame from the top of the frame.
- CH-B frequency channel B
- FIG. 21 is a diagram showing a configuration of inter-frequency channel interchanging portion 591.
- the frequency channel interchanging unit 591 is configured to include four selectors 595.
- the frequency channel interchanging unit 591 generates a selection signal and inputs it to the four selectors 595. When the selection signal is "0", the selector selects and outputs the data input to "0". Conversely, when the selection signal is "1", the selector selects and outputs the data input to "1".
- the generated selection signal alternates with “0”, “1”, “0”, “1”,... In cell units from the top of each FEC block, the output data series of inter-frequency channel interchanging portion 591 Is shown below.
- uR_T (FB-L) is a component of T-th mapping data (cell) from the head of FB-L output from the interleaving unit 2074 -R, and N cells is the number of cells in the FEC block.
- half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A).
- the remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the selection signal is not limited to the alternation of "0”, “1”, “0”, “1”, ... in cell units from the top of each FEC block, and preferably the number of "0" and "1" is It should be equally close.
- FIG. 22 is a diagram showing the configuration of the L1 information processing unit 541.
- the configuration is such that a frequency channel interchanging unit 591 is added.
- the S / P conversion unit 379 at the rear stage of the FEC coding unit 2082 is replaced with the S / P conversion unit 581 at the front stage of the FEC coding unit 2082, and two FEC coding units 2082 are provided.
- the S / P conversion unit 581 sequentially performs baseband processing on the baseband frames of L1-pre information and L1-post information output from the L1 information generation unit 181 from the top of the frame.
- the operations of the FEC encoding unit 2082, the mapping unit 2083 and the MIMO encoding unit 376 are the same as the operations in FIG.
- the operation of inter-frequency channel interchanging portion 591 is the same as the operation in FIG.
- the MIMO coding data output from the MIMO coding unit 376 is input, operates according to the configuration shown in FIG. 21, and is output to the frame configuration unit 151.
- half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A).
- the remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1 and Tx-2), and the remaining half component is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the present invention can provide a transmitting apparatus, a transmitting method, and a program that can fully exhibit the frequency diversity effect regarding.
- it is characterized in that an FEC encoder for only frequency channels used in MIMO transmission is provided, and data is exchanged between frequency channels after interleaving.
- FIG. 23 is a diagram showing a configuration of receiving apparatus 600 according to Embodiment 3 of the present invention.
- the receiving device 600 in FIG. 23 corresponds to the transmitting device 500 in FIG. 19 and reflects the function of the transmitting device 500.
- the same components as in the conventional receiving apparatus and the receiving apparatus in the first and second embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the receiver 600 of FIG. 23 has a configuration in which the P / S converter 435 is replaced with a P / S converter 635 as compared with the receiver 400 in the second embodiment shown in FIG. Furthermore, the inter-frequency channel reverse exchange unit 637 is added.
- the inter-frequency channel reverse exchange unit 637 performs data exchange reverse to that of the inter-frequency channel exchange unit 591 shown in FIG.
- the vector estimated value of the FEC block FB-2N of each frame output from 432B is multiplexed in units of FEC block and output.
- the other operation is the same as that of receiving apparatus 400 in the second embodiment shown in FIG.
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1, Tx-2) A receiver for transmitting signals from the other half, and receiving the signals transmitted from the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B) , A receiving method, and a program can be provided.
- the P / S conversion unit 635 is characterized in that input data is multiplexed and output in units of FEC blocks.
- components other than the tuner units 205A and 205B may be included in the receiving device 600 of FIG. 23 to form an integrated circuit 640.
- the MIMO-PLP processing unit 531 shown in FIG. 20 may be replaced with the MIMO-PLP processing unit 532 shown in FIG.
- the MIMO-PLP processor 532 shown in FIG. 24 compares the FEC encoder 2072B, the mapping unit 2073B, and the MIMO encoder 376B with the FEC encoder 572B.
- the configuration is such that the mapping unit 373B and the MIMO coding unit 377B are replaced.
- two interleaving units 2074-3 and 2074-4 are replaced with interleaving units 174-3 and 174-4, respectively.
- the FEC coding unit 572B may perform LDPC coding of a pattern different from that of the FEC coding unit 2072A.
- a different pattern includes a parity check matrix used for encoding, it is not limited thereto, and for example, a different coding rate may be used.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- mapping section 373 B maps MIMO encoding section 377 B, and interleaving sections 174-3 and 174-4 are the same as those in FIG.
- the other operations are the same as in the MIMO-PLP processing unit 531 shown in FIG.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- phase change matrix Differentifying the phase change patterns of X_A (k) and X_B (k) and changing the interleaving reordering pattern may all be applied simultaneously, or any two or three or four simultaneously It may apply or any one of them may apply.
- the L1 information processing unit 541 illustrated in FIG. 22 may be replaced with the L1 information processing unit 542 illustrated in FIG.
- the L1 information processing unit 542 shown in FIG. 25 is compared with the L1 information processing unit 541 shown in FIG. 22 with the FEC encoding unit 2082B, the mapping unit 2083B and the MIMO encoding unit 376B respectively, the FEC encoding unit 582B and the mapping unit
- This is a configuration in which 383 B and MIMO encoding unit 377 B are replaced.
- the FEC encoding unit 582B may perform LDPC encoding of a pattern different from that of the FEC encoding unit 2082A in the same manner as the FEC encoding unit 572B in FIG.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- FIG. 26 shows the configuration of the reception apparatus 650 when the MIMO-PLP processing unit 532 shown in FIG. 24 and the L1 information processing unit 542 shown in FIG. 25 are applied.
- the receiving apparatus 650 shown in FIG. 26 is different from the receiving apparatus 600 shown in FIG. 23 in the PLP deinterleaving section 221B, the MIMO demapping section 432B, and the FEC decoding section 233, respectively.
- the configuration is such that the mapping unit 434 B and the FEC decoding unit 633 are replaced.
- the operations of the PLP deinterleave unit 222B and the MIMO demapping unit 434B in FIG. 26 are the same as the operations in FIG.
- LDPC decoding is performed on the FEC block FB- (2N-1) of each frame to be output using different parity check polynomials. Other operations are similar to those of the receiving device 600 shown in FIG.
- components other than the tuner units 205A and 205B may be included in the receiving device 650 of FIG. 26 to form an integrated circuit 641.
- FIG. 27 is a diagram showing the configuration of transmitting apparatus 700 according to Embodiment 4 of the present invention.
- the same components as in the conventional transmission apparatus and the transmission apparatus in the first to third embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the transmitting apparatus 700 of FIG. 27 has a configuration in which the MIMO-PLP processing unit 531 is replaced with a MIMO-PLP processing unit 731 as compared to the transmitting apparatus 500 in the third embodiment shown in FIG.
- FIG. 28 is a diagram showing the configuration of the MIMO-PLP processing unit 731. As shown in FIG. Compared with the MIMO-PLP processing unit 531 in the third embodiment shown in FIG. 20, the arrangement of the frequency channel interchanging unit 591 is changed from the latter stage of the interleaving unit 2074 to the former stage.
- frequency channel interchanging portion 591 performs the same operation as in the third embodiment.
- the MIMO coding data output from MIMO coding section 376 is input, operates according to the configuration shown in FIG. 21, and is output to interleaving section 2074.
- the other operation is the same as that of the MIMO-PLP processing unit 531 in the third embodiment shown in FIG.
- half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A).
- the remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1 and Tx-2), and the remaining half component is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the present invention can provide a transmitting apparatus, a transmitting method, and a program that can fully exhibit the frequency diversity effect regarding.
- FEC coding units for only frequency channels used for MIMO transmission are provided, and data switching between frequency channels is performed after MIMO coding.
- FIG. 29 shows a configuration of receiving apparatus 800 according to Embodiment 4 of the present invention.
- the receiving device 800 in FIG. 29 corresponds to the transmitting device 700 in FIG. 27 and reflects the function of the transmitting device 700.
- the same components as in the conventional receiving apparatus and the receiving apparatus in the first to third embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the arrangement of the inter-frequency channel reverse rearrangement unit 637 is changed from the former stage of the PLP deinterleave unit 221 to the former stage of the MIMO demapping unit 432 as compared with the reception apparatus 600 in the third embodiment shown in FIG. Configuration.
- the inter-frequency-channel reverse exchange unit 637 performs the same operation as that of the third embodiment, and performs reverse data exchange with the inter-frequency-channel exchange unit 591 shown in FIG.
- the other operation is the same as that of receiving apparatus 600 in the third embodiment shown in FIG.
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1, Tx-2) A receiver for transmitting signals from the other half, and receiving the signals transmitted from the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B) , A receiving method, and a program can be provided.
- the P / S conversion unit 635 is characterized in that input data is multiplexed and output in units of FEC blocks.
- components other than the tuner units 205A and 205B may be included in the receiving device 800 of FIG.
- the MIMO-PLP processing unit 731 shown in FIG. 28 may be replaced with the MIMO-PLP processing unit 732 shown in FIG.
- the MIMO-PLP processing unit 732 shown in FIG. 30 compares the FEC encoding unit 2072B, the mapping unit 2073B and the MIMO encoding unit 376B with the FEC encoding unit 572B and The configuration is such that the mapping unit 373B and the MIMO coding unit 377B are replaced.
- two interleaving units 2074-3 and 2074-4 are replaced with interleaving units 174-3 and 174-4, respectively.
- the operations of the FEC encoding unit 572B, the mapping unit 373B, the MIMO encoding unit 377B, and the interleaving units 174-3 and 174-4 are the same as the operations in FIG.
- the other operations are similar to those of the MIMO-PLP processing unit 731 shown in FIG.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- phase change matrix Differentifying the phase change patterns of X_A (k) and X_B (k) and changing the interleaving reordering pattern may all be applied simultaneously, or any two or three or four simultaneously It may apply or any one of them may apply.
- FIG. 31 shows the configuration of the receiving apparatus 850 when the MIMO-PLP processing unit 732 shown in FIG. 30 described above is applied.
- the receiving apparatus 850 shown in FIG. 31 is different from the receiving apparatus 800 shown in FIG. 29 in the PLP deinterleaving section 221B, the MIMO demapping section 432B, and the FEC decoding section 233, respectively.
- the configuration is such that the mapping unit 434 B and the FEC decoding unit 633 are replaced.
- the operations of the PLP de-interleaving unit 222B, the MIMO demapping unit 434B, and the FEC decoding unit 633 in FIG. 31 are the same as the operations in FIG. The other operations are similar to those of the receiving device 800 shown in FIG.
- components other than the tuner units 205A and 205B may be included in the receiving device 850 of FIG. 31 to form an integrated circuit 841.
- FIG. 32 is a diagram showing the configuration of transmitting apparatus 900 according to Embodiment 5 of the present invention.
- the same components as in the conventional transmission apparatus and the transmission apparatus in the first to fourth embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the transmitting apparatus 900 in FIG. 32 is different from the transmitting apparatus 100 in the first embodiment shown in FIG. 1 in the MIMO-PLP processing unit 131 and the L1 information processing unit 141 as the MIMO-PLP processing unit 931 and the L1 information processing unit 941. Each configuration is replaced.
- FIG. 33 is a diagram showing a configuration of the MIMO-PLP processing unit 931. Compared with MIMO-PLP processing unit 731 in the fourth embodiment shown in FIG. 28, frequency channel interchanging unit 591 at the previous stage of interleaving unit 2074 is replaced with inter-frequency channel interchanging unit 991 at the previous stage of MIMO coding unit 376. is there.
- FIG. 34 is a diagram showing a configuration of inter-frequency channel interchanging portion 991.
- the frequency channel interchanging unit 991 is configured to include two selectors 595.
- the frequency channel interchanging unit 991 generates a selection signal and inputs it to the two selectors 595. When the selection signal is "0", the selector selects and outputs the data input to "0". Conversely, when the selection signal is "1", the selector selects and outputs the data input to "1".
- the generated selection signal is “0”, “0”, “1”, “1” “0”, “0”, “1”, “1”,.
- the output data series of the inter-frequency channel interchanging unit 991 is shown below.
- N cells are the number of cells in the FEC block, and N blocks is the number of FEC blocks in the frame.
- the selection signal is an alternating number of “0”, “0”, “1”, “1” “0”, “0”, “1”, “1”, ... in 2 cell units from the top of each FEC block The number is not limited, and preferably, the numbers of “0” and “1” are equally close.
- mapping data (cells) of FB- (2N-1) and FB-2N are alternately input in 2 cell units in both of MIMO coding sections 376A and 376B.
- the MIMO coding units 376A and 376B both perform precoding in units of 2 cells and output one cell to each of two transmission antennas (Tx-1, Tx-2), as in the operation in FIG.
- FIG. 35 is a diagram showing the configuration of the L1 information processing unit 941.
- FIG. Compared with L1 information processor 541 in the third embodiment shown in FIG. 22, configuration in which inter-frequency channel interleaver 591 in the latter stage of MIMO coding unit 376 is replaced with inter-frequency channel interleaver 991 in the former stage of MIMO coding unit 376. It is.
- the operation of the inter-frequency channel interchanging unit 991 is the same as the operation in FIG.
- the mapping data (cell) output from mapping section 2083 is input and operates according to the configuration shown in FIG. 34, and is output to MIMO coding section 376.
- half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A).
- the remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1 and Tx-2), and the remaining half component is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the present invention can provide a transmitting apparatus, a transmitting method, and a program that can fully exhibit the frequency diversity effect regarding.
- FEC coding units for only frequency channels used in MIMO transmission are provided, and data are exchanged between frequency channels after mapping.
- FIG. 36 is a diagram showing a configuration of receiving apparatus 1000 according to Embodiment 5 of the present invention.
- the receiving device 1000 of FIG. 36 corresponds to the transmitting device 900 of FIG. 32, and reflects the function of the transmitting device 900.
- the same components as in the conventional reception apparatus and the reception apparatus in the first to fourth embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the receiver 1000 of FIG. 36 is different from the receiver 800 of the fourth embodiment shown in FIG. 29 in that the inter-frequency channel reverse exchange unit 637 in the former stage of the MIMO demapping unit 432 is the inter-frequency channel in the former stage of the P / S converter 635. This configuration is replaced by the reverse exchange unit 1037.
- the inter-frequency channel reverse exchange unit 1037 performs reverse data exchange with the inter-frequency channel exchange unit 991 shown in FIG.
- the other operation is the same as that of receiving apparatus 800 in the fourth embodiment shown in FIG.
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1, Tx-2) A receiver for transmitting signals from the other half, and receiving the signals transmitted from the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B) , A receiving method, and a program can be provided.
- the P / S conversion unit 635 is characterized in that input data is multiplexed and output in units of FEC blocks.
- components other than the tuner units 205A and 205B may be included in the receiving device 1000 of FIG. 36 to form an integrated circuit 1040.
- the MIMO-PLP processing unit 931 shown in FIG. 33 may be replaced with the MIMO-PLP processing unit 932 shown in FIG.
- the MIMO-PLP processor 932 shown in FIG. 37 compares the FEC encoder 2072B, the mapping unit 2073B and the MIMO encoder 376B with the FEC encoder 572B and The configuration is such that the mapping unit 373B and the MIMO coding unit 377B are replaced.
- two interleaving units 2074-3 and 2074-4 are replaced with interleaving units 174-3 and 174-4, respectively.
- the operations of the FEC encoding unit 572B, the mapping unit 373B, the MIMO encoding unit 377B, and the interleaving units 174-3 and 174-4 are the same as the operations in FIG.
- the other operations are similar to those of the MIMO-PLP processing unit 931 shown in FIG.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- the L1 information processing unit 941 shown in FIG. 35 may be replaced with the L1 information processing unit 942 shown in FIG.
- the L1 information processing unit 942 shown in FIG. 38 compares the FEC encoding unit 2082B, the mapping unit 2083B and the MIMO encoding unit 376B with the FEC encoding unit 582B and the mapping unit as compared with the L1 information processing unit 941 shown in FIG. This is a configuration in which 383 B and MIMO encoding unit 377 B are replaced.
- the operations of the FEC encoding unit 582B, the mapping unit 383B, and the MIMO encoding unit 377B are the same as the operations in FIG.
- the other operation is the same as that of the L1 information processing unit 941 shown in FIG.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- FIG. 39 shows the configuration of the reception device 1050 when the MIMO-PLP processing unit 932 shown in FIG. 37 and the L1 information processing unit 942 shown in FIG. 38 are applied.
- the receiving apparatus 1050 shown in FIG. 39 is different from the receiving apparatus 1000 shown in FIG. 36 in the PLP deinterleaving section 221B, the MIMO demapping section 432B, and the FEC decoding section 233, respectively.
- the configuration is such that the mapping unit 434 B and the FEC decoding unit 633 are replaced.
- the operations of the PLP deinterleaving unit 222B, the MIMO demapping unit 434B, and the FEC decoding unit 633 are the same as the operations in FIG. The other operations are similar to those of the receiving device 1000 shown in FIG.
- MIMO-PLP processing unit 932 shown in FIG. 37 and L1 information processing unit 942 shown in FIG. 38 cells of different patterns for frequency channel A (CH-A) and frequency channel B (CH-B) as mapping units.
- CH-A frequency channel A
- CH-B frequency channel B
- each of the MIMO demapping units 432A and 434B performs processing in consideration of this.
- components other than the tuner units 205A and 205B may be included in the receiving device 1050 of FIG. 39 to form an integrated circuit 1041.
- FIG. 40 is a diagram showing the configuration of transmitting apparatus 1100 according to Embodiment 6 of the present invention.
- the same components of the conventional transmission apparatus and the transmission apparatus of the first to fifth embodiments use the same reference numerals, and the description thereof will be omitted.
- the transmitting apparatus 1100 in FIG. 40 is different from the transmitting apparatus 100 in the first embodiment shown in FIG. 1 in that the MIMO-PLP processing unit 131 and the L1 information processing unit 141 are replaced by the MIMO-PLP processing unit 1131 and the L1 information processing unit 1141. Each configuration is replaced.
- FIG. 41 is a diagram showing a configuration of the MIMO-PLP processing unit 1131. Compared with the MIMO-PLP processing unit 931 in the fifth embodiment shown in FIG. 33, the configuration in which the inter-frequency channel interchanging unit 991 in the previous stage of the MIMO coding unit 376 is replaced with the inter-frequency channel interchanging unit 1191 in the previous stage of the mapping unit 2073. is there.
- FIG. 42 is a diagram showing the configuration of the frequency channel interchanging unit 1191. As shown in FIG.
- the frequency channel interchanging unit 1191 is configured to include two selectors 1195.
- the frequency channel interchanging unit 1191 generates a selection signal and inputs it to the two selectors 1195.
- the selector selects data (FEC frame output from the FEC encoder 2072) input to “0” and outputs the data to the mapping unit 2073.
- the selector selects and outputs the data input to "1".
- mapping unit 2073 in the latter stage of the frequency channel switching unit 1191 Is similar to that of the MIMO-PLP processing unit 931 in the fifth embodiment.
- mapping data (cells) of FB- (2N-1) and FB-2N are alternately input in 2 cell units in both of MIMO coding sections 376A and 376B.
- MIMO-PLP processing unit 1131 shown in FIG. 41 The other operations of MIMO-PLP processing unit 1131 shown in FIG. 41 are the same as those of MIMO-PLP processing unit 931 shown in FIG. As a result, half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A). The remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- FIG. 43 is a diagram showing a configuration of the L1 information processing unit 1141.
- inter-frequency channel interchanging unit 991 in the previous stage of MIMO coding unit 376 is replaced with inter-frequency channel interchanging unit 1191 in the previous stage of mapping unit 2083.
- the operation of the frequency channel interchanging unit 1191 is the same as the operation in FIG. However, it operates with the configuration shown in FIG. 42 with the FEC frame output from FEC encoding 2082 as input, and outputs it to mapping section 2083.
- half of the mapping data (cell) in the FEC block is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of one frequency channel (CH-A).
- the remaining half component is transmitted from each of two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- half of the mapping data (cell) in the FEC block is the two transmit antennas (Tx ⁇ of one frequency channel (CH-A)). 1 and Tx-2), and the remaining half component is transmitted from each of the two transmit antennas (Tx-1, Tx-2) of the other frequency channel (CH-B).
- the present invention can provide a transmitting apparatus, a transmitting method, and a program that can fully exhibit the frequency diversity effect regarding.
- FEC coding units for only frequency channels used in MIMO transmission are provided to exchange data between frequency channels before mapping.
- the receiving apparatus in the sixth embodiment of the present invention can use the same configuration as the receiving apparatus 1000 in the fifth embodiment shown in FIG.
- the MIMO-PLP processing unit 1131 shown in FIG. 41 may be replaced with the MIMO-PLP processing unit 1132 shown in FIG.
- the MIMO-PLP processor 1132 shown in FIG. 44 compares the FEC encoder 2072B, the mapping unit 2073B and the MIMO encoder 376B with the FEC encoder 572B and The configuration is such that the mapping unit 373B and the MIMO coding unit 377B are replaced.
- two interleaving units 2074-3 and 2074-4 are replaced with interleaving units 174-3 and 174-4, respectively.
- the operations of the FEC encoding unit 572B, the mapping unit 373B, the MIMO encoding unit 377B, and the interleaving units 174-3 and 174-4 are the same as the operations in FIG.
- the other operations are similar to those of the MIMO-PLP processing unit 1131 shown in FIG.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- the L1 information processing unit 1141 shown in FIG. 43 may be replaced with the L1 information processing unit 1142 shown in FIG.
- the L1 information processing unit 1142 shown in FIG. 45 compares the FEC encoding unit 2082B, the mapping unit 2083B and the MIMO encoding unit 376B with the FEC encoding unit 582B and the mapping unit. This is a configuration in which 383 B and MIMO encoding unit 377 B are replaced.
- the operations of the FEC encoding unit 582B, the mapping unit 383B, and the MIMO encoding unit 377B are the same as the operations in FIG.
- the other operations are similar to those of the L1 information processing unit 1141 shown in FIG.
- the correlation between the channel characteristics between the two frequency channels (CH-A and CH-B) can be reduced to improve the reception quality of data in the receiver.
- different LDPC encoding patterns for two frequency channels CH-A, CH-B
- different mapping patterns different fixed precoding matrices F_A and F_B
- the receiving apparatus for the case where MIMO-PLP processing section 1132 shown in FIG. 44 and L1 information processing section 1142 shown in FIG. 45 is applied has the same configuration as receiving apparatus 1050 in the fifth embodiment shown in FIG. Can.
- FIG. 46 is a diagram showing the configuration of transmitting apparatus 1300 according to Embodiment 7 of the present invention.
- the same components of the conventional transmitter and the transmitters of Embodiments 1 to 6 use the same reference numerals, and the description thereof will be omitted.
- a TS (Transport Stream) generation unit 1210 generates two video B (Base layer) and video E (Enhancement layer) as video components using SVC (Scalable Video Coding).
- SVC Scalable Video Coding
- the configuration of the transmitting device 1300 of FIG. 46 is such that the L1 information processing unit 341 and the frame configuration unit 151 are replaced with an L1 information processing unit 1341 and a frame configuration unit 1351, respectively, compared to the transmitting device 300 in the second embodiment shown in FIG. It is. Furthermore, two PLP assignment units 1321 and two MIMO-PLP processing units 2031 are added.
- FIG. 47 is a diagram showing a configuration of the TS generation unit 1210.
- the TS generation unit 1210 in FIG. 47 shows, as an example, a case where one program is generated in the TS, and includes one audio coding unit 1221 and one video coding unit 1222.
- the TS generation unit 1210 includes a packetization unit 1223 for each service component of audio / video B / video E in each program.
- the TS generation unit 1210 includes a packetized stream multiplexing unit 1224 and an L2 (Layer-2) information processing unit 1225.
- L2 Layer-2
- the speech encoding unit 1221 performs source coding of speech.
- the video encoding unit 1222 performs source encoding of video using SVC, and generates two components of video B and video E.
- source coding H.264. H.264 and HEVC (H. 265).
- the packetization unit 1223 packetizes the output of the audio coding unit 1221 or the video coding unit 1222.
- the L2 information processing unit 1225 generates L2 information such as PSI (Program-Specific Information) or SI (System Information).
- the packetized stream multiplexing unit 1224 multiplexes the output of the packetization unit 1223 and the output of the L2 information processing unit 1225 to generate a TS, and outputs the TS to the transmission apparatus 1300 shown in FIG.
- PLP allocation section 1321 allocates PLP to each service component of audio / video B / video E included in each program of TS output from TS generation section 1210 and L2 information. .
- allocation is as follows.
- PLP-1 TS-1 program-1 audio, video B, L2 information
- PLP-2 TS-1 program-1 video
- PLP-3 TS-2 program-1 audio, video B, L2 information
- PLP-4 TS-2 program-1 video E
- the voice and video B, L2 information packets to the MIMO-PLP processing unit 2031 are actually multiplexed and become one input.
- the operation of the MIMO-PLP processing unit 2031 is the same as the operation in FIG.
- the operation of the MIMO-PLP processing unit 331 is the same as the operation in FIG.
- FIG. 48 is a diagram showing a configuration of the L1 information processing unit 1341.
- the L1 information processing unit 1341 has a configuration in which the L1 information generation unit 2081 is replaced with an L1 information generation unit 1381 as compared with the conventional L1 information processing unit 2041 shown in FIG. Furthermore, an FEC encoder 2082, a mapping unit 2083 and a MIMO encoder 2076 are provided for each frequency channel.
- the L1 information generation unit 1381 generates transmission parameters for two frequency channels (CH-A, CH-B).
- the operations of FEC encoding unit 2082, mapping unit 2083 and MIMO encoding unit 2076 are the same as the operations in FIG.
- frame configuration section 1351 is configured such that PLP-1 for one frequency channel (CH-A) for two transmit antennas (Tx-1 and Tx-2) output from MIMO-PLP processing section 2031-1.
- Two transmission antennas (Tx-1, Tx-2) respectively output from the L1 information processing unit 1341 Using the mapping data of the L1 frequency information channels (CH-A, CH-B), it generates and outputs a transmission frame.
- PLP PLP-2 and 4 of MIMO transmission using two frequency channels (CH-A, CH-B), and PLP (PLP-1) of MIMO transmission using frequency channel (CH-A) and PLP (PLP-3) of MIMO transmission using the other frequency channel (CH-B) are mixed in the transmission frame It is that you are.
- the operations of the OFDM signal generation unit 2061, the D / A conversion unit 2091, the frequency conversion unit 2096, and the frequency conversion unit 196 are the same as the operations in FIG.
- the PLP of the base information can be received by the MIMO receiving apparatus that supports only a single base band,
- the basic information portion of the program for example, the standard image quality can enjoy the program.
- the MIMO-PLP processing units 131 and 132 shown in FIG. 45 are shown in FIG. 2, 5, 10, 14, 15, 20, 24, 28, 30, 33, 37, 41 and 44, respectively. , 332, 333, 334, 531, 532, 531, 732, 731, 931, 932, 1131, and 1132.
- FIG. 49 is a diagram showing a configuration of receiving apparatus 1400 according to Embodiment 7 of the present invention.
- the receiving device 1400 of FIG. 49 corresponds to the transmitting device 1300 of FIG. 46, and reflects the function of the transmitting device 1300.
- the same components as in the conventional receiving apparatus and the receiving apparatus in the first to sixth embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the reception apparatus 1400 of FIG. 49 has a configuration in which the P / S conversion unit 435 is replaced with a P / S conversion unit 1435 as compared with the reception apparatus 400 in the second embodiment shown in FIG.
- P / S conversion section 1435 multiplexes the outputs from MIMO demapping sections 432A and 432B in units of FEC blocks for L1 information, and outputs the result to FEC decoding section 233 in the subsequent stage. More specifically, P / S conversion section 1435 is shown in FIG. 13 for PLP (PLP-2 and 4 in FIG. 46) of MIMO transmission using two frequency channels (CH-A, CH-B). The same operation as the P / S conversion unit 435 is performed. P / S conversion unit 1435 selects an output from MIMO demapping unit 432A for PLP of MIMO transmission using one frequency channel (CH-A) (PLP-1 in FIG. 46), It is output to the FEC decoding unit 233 in the latter stage.
- CH-A frequency channel
- P / S conversion unit 1435 selects the output from MIMO demapping unit 432B for PLP (PLP-3 in FIG. 46) of MIMO transmission using the other frequency channel (CH-B), It is output to the FEC decoding unit 233 in the latter stage.
- the other operation is the same as that of receiving apparatus 400 in the second embodiment shown in FIG.
- the present invention can provide a receiving apparatus, a receiving method, and a program for receiving the received signal.
- it can be received including the extended information portion, and the program can be enjoyed, for example, with high definition.
- components other than the tuner units 205A and 205B may be included in the receiving device 1400 of FIG.
- the receiver 1450 may be configured. Compared with the receiving apparatus 1400 shown in FIG. 49, the receiving apparatus 1450 in FIG. 50 has a tuner unit 205B, an A / D converting unit 208B, a demodulating unit 211B, a frequency deinterleaving / L1 information deinterleaving unit 215B, and a PLP deinterleaving unit. A configuration in which the 221B, the selection unit 231B, the MIMO demapping unit 432B, and the P / S conversion unit 1435 are deleted.
- a receiver 1450 is a MIMO receiver compatible with only a single base band.
- the two tuner units 205A both selectively receive the signal of one frequency channel (CH-A) or the other frequency channel (CH-B), and down-convert the signal into a predetermined band.
- the operations of A / D conversion unit 208A, demodulation unit 211A, frequency deinterleaving / L1 information deinterleaving unit 215A, PLP deinterleaving unit 221A, selecting unit 231A, and MIMO demapping unit 432A are the same as the operations in FIG. is there.
- the FEC decoder 233 performs LDPC decoding and BCH decoding on the vector estimated value of each FEC block output from the MIMO demapping unit 432A, and outputs a decoding result.
- the present invention can provide a receiving apparatus, a receiving method, and a program for receiving the received signal.
- the PLP of the basic information can be received, and the basic information portion of the program, for example, the standard image quality can enjoy the program.
- the basic information portion of the program for example, the standard image quality can enjoy the program.
- components other than the tuner unit 205A may be included in the receiving device 1450 in FIG. 50 to form an integrated circuit 1441.
- FIG. 51 is a diagram showing the configuration of transmitting apparatus 150 according to Embodiment 8 of the present invention.
- the same components as in the conventional transmission apparatus and the transmission apparatus in the first to seventh embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the eighth embodiment when two frequency channels (CH-A, CH-B) are adjacent to each other, the two frequency channels are collectively processed in the processing after the frame configuration unit.
- Transmitting apparatus 150 of FIG. 51 has four OFDM signal generating sections 2061, four D / A converting sections 2091, two frequency converting sections 2096, and four transmitting sections 1501 compared to transmitting apparatus 100 in the first embodiment shown in FIG.
- 196 is replaced by two OFDM signal generation units 161, two D / A conversion units 191, and two frequency conversion units 198.
- Tx-1 OFDM signal generator 161-1 for adding a pilot signal, an IFFT, inserting a GI, inserting a P1 symbol and an aP1 symbol collectively for two frequency channels (CH-A, CH-B), and a digital base Output band transmission signal.
- the D / A conversion unit 191-1 for Tx-1 performs D / A conversion on the digital baseband transmission signal for Tx-1 output from the OFDM signal generation unit 161-1 and outputs an analog baseband transmission signal.
- the frequency converter 196-1 for Tx-1 performs frequency conversion on the frequency channels A and B for the analog baseband transmission signal output from the D / A converter 191-1 and does not show the analog RF transmission signal. Output from the transmitting antenna. This transmits analog RF transmission signals on the two Tx-1 frequency channels (CH-A, CH-B).
- an OFDM signal generation unit 161-2 for Tx-2 is used.
- the operations of the D / A conversion unit 191-2 and the frequency conversion unit 196-2 are the same as those for Tx-1. This transmits analog RF transmission signals on the two Tx-2 frequency channels (CH-A and CH-B).
- the other operation is the same as that of transmitting apparatus 100 in the first embodiment shown in FIG.
- FIG. 52 is a diagram showing a configuration of receiving apparatus 270 in the eighth embodiment of the present invention.
- the receiver 270 of FIG. 52 corresponds to the transmitter 150 of FIG. 51 and the transmitter 100 of FIG. 1 when two frequency channels (CH-A, CH-B) are adjacent, and the transmitters 150 and 100 It reflects the function of The same components as in the conventional receiving apparatus and the receiving apparatus in the first to seventh embodiments use the same reference numerals, and descriptions thereof will be omitted.
- the receiving device 270 in FIG. 52 has four tuners 205, four A / D converters 208 and four demodulators 211 as two tuners respectively.
- the configuration is such that the unit 206, two A / D conversion units 209, and two demodulation units 212 are replaced. Furthermore, two S / P conversion units 214 are added.
- the tuner unit 206-1 for one receiving antenna selects and receives signals of two frequency channels (CH-A, CH-B) collectively and predetermined Downconvert to the band of The Rx-1 A / D conversion unit 209-1 A / D converts the signal output from the Rx-1 tuner unit 206-1 and outputs a digital reception signal.
- the demodulation unit 212-1 performs OFDM demodulation, and outputs cell data of I ⁇ Q coordinates and a transmission path estimated value. As a result, cell data of I ⁇ Q coordinates and channel estimation values regarding the two frequency channels (CH-A, CH-B) of Rx-1 are output.
- the S / P converter 214-1 In response to the output of the demodulator 212-1, the S / P converter 214-1 outputs data on one frequency channel (CH-A) to the frequency deinterleaver / L1 information deinterleaver 215A-1, and the other The data on the frequency channel (CH-B) is output to the frequency deinterleaving / L1 information deinterleaving unit 215B-1.
- the operations of the tuner unit 206-2 for the other reception antenna (Rx-2), the A / D conversion unit 209-2, and the two demodulation units 212-2 are the same as the operation for Rx-1.
- cell data of I ⁇ Q coordinates and channel estimation values regarding the two frequency channels (CH-A, CH-B) of Rx-2 are output.
- the S / P converter 214-2 outputs the data on one frequency channel (CH-A) to the frequency deinterleaver / L1 information deinterleaver 215A-2 in response to the output of the demodulator 212-2 and the other
- the data on the frequency channel (CH-B) is output to the frequency deinterleaving / L1 information deinterleaving unit 215B-2.
- the other operation is the same as that of receiving apparatus 200 in the first embodiment shown in FIG.
- the tuner unit, the A / D conversion unit, and the demodulation unit collectively process two frequency channels (CH-A and CH-B) for each reception antenna.
- components other than the tuner units 206-1 and 206-2 may be included as the integrated circuit 242 in the reception device 270 of FIG.
- the present invention is not limited to the contents described in the above embodiment, but can be practiced in any form for achieving the object of the present invention and the objects related to or associated with it, for example, the following may be possible. .
- the number of transmitting and receiving antennas is two in all cases.
- the number of transmitting and receiving antennas is not limited to two, and may be three or more. Also, the number of transmitting and receiving antennas may be different.
- the number of frequency channels is two. However, the number is not limited to two and may be three or more.
- each encoded block when the number of basic bands is three or more, each encoded block may be assigned to all of the plurality of basic bands or two or more of the plurality of basic bands. A process of distributing included data components may be performed.
- different polarizations may be applied to two transmission antennas (Tx-1, Tx-2).
- different polarizations include V (Vertical) polarization and H (Horizontal) polarization. This can further enhance the diversity effect.
- the polarizations assigned to transmit antenna 1 (Tx-1) and transmit antenna 2 (Tx-2) may be the same or different for two frequency channels (CH-A, CH-B). It is also good.
- the phase change is performed on the transmitting antenna 2 (Tx-2).
- the present invention is not limited to this, and the phase change may be performed on the transmitting antenna 1 (Tx-1) Good.
- transmit antennas that perform phase change for two frequency channels (CH-A and CH-B) are different, such as transmit antenna 1 (Tx-1) and transmit antenna 2 (Tx-2), Good.
- the number of TSs is two, it is not limited to this.
- the number of programs of TS-1 and 2 is set to 1, it is not limited to this.
- the service components are audio and video
- the present invention is not limited to this.
- Other examples include data components.
- the seventh embodiment is configured to perform scalable coding on video, the present invention is not limited to this, and scalable coding may be performed on audio and data components.
- the video B and the video E are generated by SVC.
- MVC_B Base view
- MVC_D Dependent view
- MVC Multi-view Video Coding
- voice, video B, and L2 information is MIMO transmission using a single base band and video E is MIMO transmission using a plurality of base bands
- the present invention is not limited thereto.
- MISO Multiple Input Single Output
- MIMO transmission of video B using a single base band MIMO transmission of video E using a plurality of base bands
- SISO Single Input single Output
- MISO transmission and SISO transmission may be further mixed.
- the above first to eighth embodiments may relate to an implementation using hardware and software.
- the above embodiments may be implemented or performed using a computing device (processor).
- the computing device or processor may be, for example, a main processor / general purpose processor (digital purpose processor), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), other programmable logic devices, etc. May be there.
- the above embodiments may be implemented or realized by combining these devices.
- the above-described first to eighth embodiments may be realized by the mechanism of a software module executed by a processor or directly by hardware. Also, a combination of software modules and hardware implementation is possible.
- the software modules may be stored on various types of computer readable storage media such as RAM, EPROM, EEPROM, flash memory, registers, hard disk, CD-ROM, DVD, etc.
- FIG. 75 is a diagram showing a configuration of a transmitting device 5000 in the ISDB-T system.
- the transmitting apparatus 5000 includes a TS (Transport Stream) remultiplexing unit 5011, an RS (Reed-Solomon) encoding unit 5021, a hierarchy division unit 5031, hierarchy processing units 5041-A to C, a hierarchy combination unit 5051, a time interleaving unit 5061, Frequency interleaving unit 5071, pilot signal generation unit 5081, transmission multiplexing configuration control (TMCC) / auxiliary channel (AC) signal generation unit 5091, frame configuration unit 5101, OFDM signal generation unit 5111, D / A conversion unit 5121, frequency conversion unit 5131 is provided.
- TS Transport Stream
- RS Random-Solomon
- the operation of transmitting apparatus 5000 will be described below.
- the plurality of TSs output from the MPEG-2 multiplexing unit (not shown) are input to the TS re-multiplexing unit 5011 in order to arrange TS packets suitable for signal processing in units of data segments.
- the TS re-multiplexing unit 5011 converts the signal into a burst signal of 188 bytes and a single TS using a clock that is four times faster than a Fast Fourier Transform (FFT) sample clock.
- FFT Fast Fourier Transform
- the RS encoding unit 5021 performs RS encoding, and adds 16-byte parity to information of 188 bytes.
- the layer division unit 5031 performs layer division of up to three systems (layer A, layer B, and layer C) in accordance with specification of layer information when layer transmission is performed.
- FIG. 76 shows the structure of the hierarchical processing unit 5041.
- the hierarchical processing unit 5041 includes an energy spreading unit 5201, a byte interleaving unit 5211, a convolutional encoding unit 5221, a bit interleaving unit 5231, and a mapping unit 5241.
- the hierarchical processing unit 5041 mainly performs digital data processing such as error correction coding and interleaving, and carrier modulation on the input hierarchical data. Error correction, interleaving length, and carrier modulation scheme are set independently in each layer.
- the layer combining unit 5051 performs layer combination of data of up to three systems (layer A, layer B, and layer C) output from the layer processing units 5041-AC.
- FIG. 77 is a diagram showing a configuration of frequency interleaving section 5071.
- the frequency interleaving unit 5071 includes a segment dividing unit 5301, inter-segment interleaving units 5311-D and S, intra-segment carrier rotation units 5321-P and D and S, and intra-segment carrier randomizing units 5331-P and D and S.
- the time interleaving unit 5061 performs convolutional interleaving in the segment on the output from the layer combining unit 5051 to effectively exert the error correction coding capability against electric field fluctuation and multipath interference in mobile reception.
- An interleaving unit 5071 performs interleaving between and within the segments.
- the segment division unit 5301 is a partial reception unit, a differential modulation unit (a segment whose carrier modulation is designated as DQPSK), a synchronous modulation unit (a carrier modulation is designated as QPSK, 16 QAM, or 64 QAM).
- Data segment numbers 0 to 12 are assigned in the order of.
- the data segments of each layer are sequentially arranged in numerical order, and from the layer including the small number of the data segment to layer A, layer B, layer C. Even if the layers are different, inter-segment interleaving is performed on data segments belonging to the same type of modulator.
- the pilot signal generation unit 5081 generates a pilot signal for synchronous reproduction.
- the TMCC / AC signal generation unit 5091 generates a TMCC signal, which is control information, and an AC signal, which is additional information, in order to support demodulation and decoding of the receiver for hierarchical transmission in which a plurality of transmission parameters are mixed.
- the frame configuration unit 5101 uses the information data output from the frequency interleaving unit 5071, the pilot signal for synchronous reproduction output from the pilot signal generation unit 5081, and the TMCC signal output from the TMCC / AC signal generation unit 5091 according to the ISDB-T system. Configure the transmission frame of
- FIG. 78 shows a segment configuration of the ISDB-T system, taking a synchronous modulation unit (QPSK, 16 QAM, 64 QAM) of mode 1 as an example.
- a scattered pilot signal hereinafter referred to as an SP signal: Scattered Pilot signal
- SP signal scattered Pilot signal
- SP signals are repeatedly arranged in a cycle of 4 symbols, and are arranged shifted by 3 carriers for each symbol.
- the SP signal thus arranged is modulated to binary according to a specific pattern determined by its carrier position and transmitted.
- the carriers of the TMCC signal and the AC signal are randomly arranged in the frequency direction in order to reduce the influence of periodic dips in channel characteristics due to multipath.
- an information transmission signal is modulated to QPSK, 16 QAM, 64 QAM, etc., and transmitted using carriers in which an SP signal, a TMCC signal, and an AC signal are not arranged.
- the OFDM signal generation unit 5111 performs IFFT (Inverse FFT) and GI (Guard Interval) insertion on the transmission frame configuration of the ISDB-T system output from the frame configuration unit 5101, and the digital baseband of the ISDB-T system. Output the transmission signal.
- the D / A conversion unit 5121 performs D / A conversion on the digital baseband transmission signal of ISDB-T system output from the OFDM signal generation unit 5111, and outputs an analog baseband transmission signal of ISDB-T system. .
- the frequency converter 5131 performs frequency conversion of the ISDB-T analog baseband transmission signal output from the D / A converter 5121 to the frequency channel Y, and does not illustrate the ISDB-T analog RF transmission signal. Output from the transmit antenna (Tx-1).
- Non-Patent Document 5 In fixed reception where the receiving antenna is on the roof, a line of Sight (LOS) environment, which is a line of sight, is a typical transmission path. In this case, there is a problem that the reception quality is degraded depending on the MIMO transmission method (Non-Patent Document 5).
- LOS line of Sight
- polarization MIMO transmission technology consisting of a plurality of antennas having different polarization directions (for example, V (vertical) polarization, H (horizontal) polarization) is being studied.
- a transmitting apparatus assigns a plurality of different data signals provided in a broadcasting station to each of a plurality of transmitting antennas, and broadcasts in the same frequency or overlapping frequency bands. Transmit OFDM signal by wave.
- the OFDM signal is transmitted through a plurality of systems of propagation paths, and the receiving apparatus receives the OFDM signals of the plurality of systems by a plurality of receiving antennas, and propagates from each of the plurality of systems of OFDM signals.
- polarization MIMO transmission technology it is important to distribute data after error correction (FEC) coding to each polarization antenna to enhance polarization diversity effect.
- FEC error correction
- FEC error correction
- it is important to facilitate the introduction of the new scheme by enabling the existing ISDB-T scheme and the new scheme using the polarization MIMO transmission technique to be mixed in the same frequency channel.
- the inventions according to the ninth to twelfth embodiments described below are made to solve the above-mentioned problems, and a transmitting apparatus, a transmitting method, a receiving apparatus, a receiving method, an integrated circuit, using MIMO transmission technology. And to provide a program.
- FIG. 57 is a diagram showing the configuration of transmitting apparatus 3000 according to Embodiment 9 of the present invention.
- the same components as those of the conventional transmission apparatus are denoted by the same reference numerals, and the description thereof is omitted.
- the transmitting apparatus 3000 shown in FIG. 57 is different from the conventional transmitting apparatus 5000 shown in FIG. 75 in hierarchical processing sections 5041 -A to C, pilot signal generating section 5081, TMCC / AC signal generating section 5091 and frame configuration section 5101.
- the hierarchical processing units 3041 -A to C, the pilot signal generation unit 3081, the TMCC / AC signal generation unit 3091, and the frame configuration unit 3101 are replaced respectively.
- a hierarchy combining unit 5051, a time interleaving unit 5061, a frequency interleaving unit 5071, an OFDM signal generation unit 5111, a D / A conversion unit 5121, a frequency conversion unit for each transmission antenna (Tx-1, Tx-2) 5131 is provided.
- Tx-1 and Tx-2 use H polarization and V polarization, respectively, the present invention is not limited to this, and different polarizations may be combined.
- FIG. 58 is a diagram showing the configuration of the hierarchical processing unit 3041.
- this embodiment has a configuration in which a MISO (Multiple Input Single Output) encoding unit 3251, a MIMO encoding unit 3261 and a selector 3271 are added.
- the MISO coding unit 3251 performs MISO coding on the output from the mapping unit 5241, and generates MISO coded data for two transmission antennas (Tx-1, Tx-2). Output.
- Alamouti coding is mentioned as an example of MISO coding, but it is not limited to this.
- zP_k is output data (MIMO encoded data) for the transmission antenna P
- F is a fixed precoding matrix represented by equation (31).
- wMN does not have to be all complex numbers, and real elements may be included.
- precoding may be performed by multiplying the equation (30) by the phase change matrix X (k) which changes more regularly.
- phase change matrix X (k) performs phase change of period 9 changing by 2 ⁇ / 9 radians on the MIMO encoded data sequence for the transmission antenna 2 (Tx-2). Therefore, by causing regular fluctuations in the MIMO transmission path, it is possible to obtain an effect that the reception quality of data in the receiver in the LOS (Line Of Sight) environment in which the direct wave is dominant can be improved.
- this example of phase change is merely an example, and the period is not limited to nine. If the number of cycles increases, it may be possible to promote the improvement of the reception performance (more accurately, the error correction performance) of the receiving apparatus by that much (though it is not always better if the cycle is larger, Small values such as are likely to be better avoided.)
- the configuration is shown in which the predetermined phase (in the above equation, each 2 ⁇ / 9 radian) is sequentially rotated. It is also possible to change the phase randomly instead of causing it to What is important in the regular change of the phase is that the phase of the modulation signal is regularly changed, and the degree of the phase to be changed is as uniform as possible, for example, - ⁇ radian to ⁇ radian However, it may be random although it is desirable to have a uniform distribution.
- each element of the output vector z is expressed as in equations (34) to (35).
- f1 and f2 represent functions. Therefore, in the polarization MIMO transmission technology, by transmitting the components of each mapping data from all the transmission antennas, it is possible to provide a transmission apparatus, a transmission method, and a program that sufficiently exhibit polarization diversity effects.
- Equation (36) a fixed precoding matrix F represented by equation (36) may be used.
- precoding may be performed by multiplying the equation (36) by the phase change matrix X (k) which changes more regularly.
- the MIMO coding unit 3261 performing the above operations, each element of the output vector z is expressed as shown in Equations (37) to (38).
- f1 and f2 represent functions. Therefore, in polarization MIMO transmission technology, polarization diversity is achieved by transmitting half of all mapping data from one transmit antenna (Tx-1) and transmitting the other half from the other transmit antenna (Tx-2). It is possible to provide a transmitting device, a transmitting method, and a program that can fully exhibit the effects.
- the selector 3271 selects data to be input to “0”, “1”, and “2” when the selection signal is “0”, “1”, and “2”, respectively. Output. That is, if the layer is the existing ISDB-T system, MISO transmission, and MIMO transmission, the selection signals are “0", “1”, and “2”, respectively. However, when the selection signal is "0", a null signal is output to Tx-2.
- the hierarchical processing unit 3041 can output data of up to three systems (layer A, layer B, layer C), and can select one of ISDB-T, MISO transmission, and MIMO transmission. .
- hierarchical combining section 5051, time interleaving section 5061 and frequency interleaving section 5071 of each transmitting antenna perform the same operation as in conventional transmitting apparatus 5000 shown in FIG. That is, the operation for both transmitting antennas is made the same.
- the segment division unit 5301 does not have a synchronous modulation unit or a differential modulation unit according to ISDB-T.
- the MISO / MIMO synchronous modulation unit is assigned to the synchronous modulation unit or the differential modulation unit (which is not used).
- the ISDB-T system and the MISO / MIMO system are independently frequency interleaved, so that the ISDB-T system and the MISO / MIMO system do not coexist in each segment after frequency interleaving.
- layers of MISO transmission and layers of MIMO transmission can be mixed in each segment after frequency interleaving.
- the pilot signal generation unit 3081 generates a pilot signal for synchronization reproduction. However, for segments belonging to the layer of MIMO transmission or MISO transmission, a pilot signal for synchronization recovery for MIMO / MISO is generated.
- the TMCC / AC signal generation unit 3091 generates a TMCC signal which is control information and an AC signal which is additional information. However, for segments belonging to the MIMO transmission and MISO transmission layers, TMCC signals for MIMO and MISO are generated.
- the segment configuration of MIMO transmission and MISO transmission is shown by taking the synchronous modulation unit in mode 1 shown in FIG. 59 as an example.
- the SP signals of both transmitting antennas are in phase, and when it is odd, the SP signal of Tx-2 is in reverse phase to Tx-1.
- the synchronous modulation section of ISDB-T system has a lower frequency. When adjacent, it serves as the SP of the ISDB-T synchronous modulation unit.
- CP signals may be transmitted from both transmission antennas.
- the OFDM symbol number is even
- the CP signals of both transmitting antennas are in phase
- the CP signal of Tx-2 is in reverse phase to Tx-1.
- the TMCC signal and AC signal are not subjected to MIMO / MISO coding, and the same signal is transmitted from both transmitting antennas (Tx-1 and Tx-2), and the frequency direction arrangement thereof is compared with that in ISDB-T.
- the existing ISDB-T receiver can also receive the TMCC signal and the AC signal of the MIMO / MISO segment.
- FIG. 60 shows a part of the definition of TMCC signal.
- 60 (a) and 60 (b) respectively show the definitions of the ISDB-T scheme and the carrier modulation mapping scheme in the ninth embodiment.
- MISO transmission and MIMO transmission are allocated to "100" and "101" which are undefined in the ISDB-T system.
- a segment of MISO transmission or MIMO transmission can be recognized as "not receivable" by existing ISDB-T receivers, and a receiver compatible with MISO transmission or MIMO transmission can be recognized as a segment of MISO transmission or MIMO transmission. It can be recognized.
- FIGS. 60 (c) and 60 (d) show the definitions of the ISDB-T method and B110 to B121 in the ninth embodiment, respectively.
- QPSK MISO / MIMO transmission
- 16 QAM MISO / MIMO transmission
- 64 QAM MISO / MIMO transmission
- FIGS. 60 (e) and 60 (f) show the definition of the segment identification in the ISDB-T system and the ninth embodiment, respectively.
- “000” and “001” are respectively defined as a synchronous modulation unit or a MISO / MIMO synchronous modulation unit, a differential modulation unit or a MISO / MIMO synchronous modulation unit.
- the MISO / MIMO synchronous modulation unit can be defined by "000” or "111", respectively. Whether “000” and “111” are MISO / MIMO synchronous modulation units is recognized by the definition of the carrier modulation mapping scheme in FIG. 60 (b).
- the existing ISDB-T receiver continues to interpret “000” and “111” as a synchronous modulation unit and a differential modulation unit, respectively, but the carrier modulation mapping method definition in FIG. 60 (b) is ISDB-T.
- the carrier modulation mapping method definition in FIG. 60 (b) is ISDB-T.
- a receiver supporting MISO transmission and MIMO transmission recognizes it as a segment of MISO transmission or MIMO transmission according to the definition of the carrier modulation mapping method of FIG. 60 (b), and recognizes the MISO / MIMO synchronous modulation unit. can do.
- receivers compatible with MISO transmission and MIMO transmission can recognize carrier modulation mapping schemes of segments of MISO transmission or MIMO transmission without adversely affecting existing ISDB-T receivers.
- Frame configuration section 3101 includes information data output from frequency interleaving 5071 for each transmission antenna, a pilot signal for synchronous reproduction output from pilot signal generation section 3081, and TMCC and AC signals output from TMCC / AC signal generation section 3091.
- a transmission frame is configured in each of two transmit antennas (Tx-1, Tx-2) and a segment of MIMO or MISO transmission. It is good.
- OFDM signal generating section 5111, D / A converting section 5121 and frequency converting section 5131 perform the same operation as in conventional transmitting apparatus 5000 shown in FIG. That is, the operation for both transmitting antennas is made the same.
- the polarization diversity effect can be sufficiently exhibited, and in particular, a processing method with high affinity to the existing ISDB-T system (time interleaving same as ISDB-T system, It is characterized in that it is realized using frequency interleaving or the like.
- FIG. 61 is a diagram showing the configuration of the existing ISDB-T receiver 3300. As shown in FIG. The ISDB-T receiver 3300 in FIG. 61 corresponds to the transmitter 5000 in FIG. 75, and reflects the function of the transmitter 5000.
- the ISDB-T receiver 3300 includes a tuner 3305, an A / D converter 3308, a demodulator 3311, a frequency deinterleaver 3315, a time deinterleaver 3321, a multi-layer TS reproduction unit 3331, and FEC decoding.
- a unit 3333 and a TMCC signal decoding unit 3335 are provided.
- tuner section 3305 selects the signal of the tuned frequency channel (CH-Y). Receive and downconvert to a predetermined band.
- the A / D conversion unit 3308 performs A / D conversion and outputs a digital reception signal.
- Demodulation section 3311 performs OFDM demodulation, and outputs the mapping data (cell) of I and Q coordinates after equalization and the channel estimation value to frequency deinterleave section 3315, and the FFT output before equalization as a TMCC signal decoding section Output to 3335.
- the TMCC signal decoding unit 3335 performs differential BPSK demodulation on each carrier on which the TMCC signal shown in FIG. 59 is arranged with respect to the FFT output before equalization output from the demodulation unit 3311, and collects them for each segment.
- the demodulation result is subjected to majority decision decoding to decode the TMCC signal.
- the decoded TMCC signal is output to the demodulation unit 3311, the frequency deinterleaving unit 3315, the time deinterleaving unit 3321, the multi-layer TS reproduction unit 3331, and the FEC decoding unit 3333 to be a TMCC signal decoded by each unit. An action based on it is performed.
- the frequency de-interleaving unit 3315 applies the frequency to each of the partial reception unit, the differential modulation unit, and the synchronous modulation unit with respect to the mapping data of the I and Q coordinates after equalization and the channel estimation value output from the demodulation unit Perform deinterleaving.
- the time de-interleaving unit 3321 performs time de-interleaving on the output from the frequency de-interleaving unit 3315.
- FIG. 62 is a diagram showing the structure of the multi-tiered TS reproducing unit 3331.
- the multi-layer TS reproduction unit 3331 includes a single input single output (SISO) demapping unit 3401, a bit deinterleaving unit 3411, a depuncture unit 3421, and a TS reproduction unit 3431.
- the SISO demapping unit 3401 performs demapping processing based on the mapping data of the I and Q coordinates after equalization and the transmission path estimated value, which are rearranged by the frequency deinterleaving unit 3315 and the time deinterleaving unit 3321.
- the bit deinterleaving unit 3411 performs bit deinterleaving, and the depuncturing unit 3421 performs depuncturing processing.
- the TS reproduction unit 3431 performs TS reproduction for each layer with respect to the output of the depuncturing unit 3421.
- FIG. 63 is a diagram showing a configuration of the FEC decoding unit 3333.
- the FEC decoding unit 3333 includes a Viterbi decoding unit 3441, a byte deinterleaving unit 3451, an energy despreading unit 3461, and an RS decoding unit 3471.
- the Viterbi decoding unit 3441 performs Viterbi decoding on the output from the multi-layer TS reproduction unit 3331
- the byte deinterleaving unit 3451 performs byte deinterleaving
- the energy despreading unit 3461 performs energy despreading
- the RS decoding unit 3471 performs RS decoding.
- the ISDB-T receiver 3300 in FIG. 61 outputs the TS of each layer subjected to the error correction decoding to the signal transmitted from the transmitter 5000 in FIG.
- the integrated circuit 3341 may be configured by including components other than the tuner unit 3305 in the ISDB-T receiver 3300 in FIG.
- the tuner unit 3305 and the A / D conversion unit 3308 perform the same operation as described above.
- the TMCC signal decoding unit 3335 majority decodes the demodulation results collected for each segment to decode the TMCC signal, as in the above-described operation.
- the transmission device 3000 in FIG. 57 does not perform MIMO / MISO coding on the TMCC signal, but from both transmission antennas (Tx-1, Tx-2) Send the same signal. Therefore, the TMCC decoding unit 3335 can decode the TMCC signal of the segment to which the hierarchy of MISO transmission or MIMO transmission is assigned, and determines that the segment can not be received according to the definition of the TMCC signal shown in FIG.
- the determination result is output to the demodulator 3311, the frequency deinterleaver 3315, the time deinterleaver 3321, the multi-tiered TS reproducer 3331, and the FEC decoder 3333.
- Each part is allocated to the ISDB-T hierarchy. Process only the specified segment.
- the ISDB-T receiving apparatus 3300 of FIG. 61 outputs the TS of the layer of ISDB-T scheme subjected to the error correction decoding to the signal transmitted from the transmitting apparatus 3000 of FIG.
- FIG. 64 is a diagram showing a configuration of receiving apparatus 3500 in the ninth embodiment of the present invention.
- the reception device 3500 of FIG. 64 corresponds to the transmission device 3000 of FIG. 57, and reflects the function of the transmission device 3000.
- the same components as those of the existing ISDB-T receiver use the same reference numerals and the description thereof is omitted.
- Receiving apparatus 3500 replaces multi-layer TS reproducing section 3331 and TMCC signal decoding section 3335 with multi-layer TS reproducing section 3531 and TMCC signal decoding section 3535, respectively, as compared to ISDB-T receiving apparatus 3300 shown in FIG. It is a structure. Furthermore, the demodulation unit 3311 is replaced with a demodulation unit 3511 and provided for each transmission antenna. Further, the reception apparatus 3500 includes a tuner unit 3305, an A / D conversion unit 3308, a frequency deinterleave unit 3315, and a time deinterleave unit 3321 for each transmission antenna.
- reception device 3500 When an analog RF transmission signal is input from both receiving antennas (Rx-1, Rx-2) to the signal transmitted from transmitting apparatus 3000 in FIG. 57, tuner section 3305 of each receiving antenna and A / D conversion The unit 3308 performs the same operation as the ISDB-T receiver 3300 shown in FIG.
- the demodulator 3511 of each receiving antenna performs OFDM demodulation. However, equalization is not performed on the segment to which the hierarchy of MISO transmission or MIMO transmission is assigned, and transmission path estimation for MISO / MIMO is performed based on the SP signal shown in FIG. Therefore, the demodulator 3511 of each receiving antenna outputs the FFT output before equalization to the frequency deinterleaver 3315 and the TMCC signal decoder 3535 for the segment to which the layer of MISO transmission or MIMO transmission is assigned. The channel estimation value is output to the frequency deinterleave unit 3315.
- the TMCC signal decoding unit 3535 performs differential BPSK demodulation and majority decision decoding on the FFT output before equalization output from the demodulation unit 3511 as in the TMCC signal decoding unit 3335 in FIG. 61, and decodes the TMCC signal. .
- the decoding performance is further improved by performing majority decision decoding using the outputs from the demodulation units 3511 of both receiving antennas (Rx-1, Rx-2).
- the TMCC signal decoding unit 3535 recognizes the definition of the TMCC signal shown in FIG. 60, and detects whether it is MISO transmission or MIMO transmission also for a segment to which a layer of MISO transmission or MIMO transmission is assigned.
- the carrier modulation mapping scheme QPSK, 16 QAM, 64 QAM is also detected.
- the detection result is output to the demodulation unit 3511, the frequency deinterleaving unit 3315, the time deinterleaving unit 3321, the multi-layer TS reproducing unit 3531, and the FEC decoding unit 3333 of each receiving antenna, and each unit is an ISDB-T system. Processing the segment to which the layer of H.sub.2 is assigned and the segment to which the layers of MISO transmission and MIMO transmission are assigned.
- the frequency deinterleaving unit 3315 has a frequency de-interleaving function in each receiving antenna of ISDB-T synchronous modulation unit or ISDB-T differential modulation unit to which the MISO / MIMO synchronous modulation unit is assigned. Frequency de-interleaving is possible. Also, for segments to which a layer of ISDB-T scheme is assigned, the operation of the frequency deinterleaver 3315 and the time deinterleaver 3321 of one receiving antenna (Rx-1 or Rx-2) can be stopped. . Alternatively, both receive antennas (Rx-1, Rx-2) operate and diversity reception can further improve the reception performance.
- FIG. 65 is a diagram showing the configuration of the multi-tiered TS reproduction unit 3531.
- the multi-layer TS reproduction unit 3531 has a configuration in which the SISO demapping unit 3401 is replaced with a SISO / MISO / MIMO demapping unit 3501 as compared to the multi-layer TS reproduction unit 3331 shown in FIG.
- the SISO / MISO / MIMO demapping unit 3501 performs the same operation as the SISO demapping unit 3401 on the segment to which the layer of ISDB-T scheme is allocated based on the input TMCC signal, and performs MISO transmission or MIMO transmission. MISO or MIMO demapping processing is performed on the segment to which the layer of
- the other operations of multi-tier TS reproducing unit 3531 in FIG. 65 are the same as those in multi-tier TS reproducing unit 3331 in FIG.
- the FEC decoding unit 3333 is the same as the operation in FIG. 64
- the MIMO demapping processing in SISO / MISO / MIMO demapping section 3501 will be described below.
- the input vector y (y 1 _k, y 2 _k) T to the MIMO demapping unit 3501 is expressed by equation (39).
- H is a channel matrix expressed by equation (40)
- nP_k is an average value of 0, i of variance ⁇ 2 . i. d. Complex Gaussian noise.
- MLD maximum likelihood decoding
- ZF Zero Forcing
- components other than the tuner unit 3305 may be included in the receiving device 3500 of FIG.
- FIG. 66 is a diagram showing the configuration of transmitting apparatus 3600 according to Embodiment 10 of the present invention.
- the same components of the conventional transmission apparatus and the transmission apparatus of the ninth embodiment use the same reference numerals, and descriptions thereof will be omitted.
- the transmitter 3600 of FIG. 66 differs from the transmitter 3000 of the ninth embodiment shown in FIG. 57 in that the TS remultiplexing unit 5011, the hierarchy division unit 5031 and the TMCC / AC signal generation unit 3091 are compared to the TS remultiplexer 3611 and It is the structure replaced by the hierarchy division part 3631 and the TMCC / AC signal generation part 3691, respectively. Furthermore, an LDPC layer allocation unit 3635 and an LDPC layer processing unit 3645 are added. In the tenth embodiment, only the C layer is configured to perform LDPC encoding. However, the present invention is not limited to this, and LDPC encoding may be performed on other layers, and LDPC encoding may be performed on a plurality of layers. You may go.
- the TS re-multiplexing unit 3611 converts two TSs among the three TSs output from the MPEG-2 multiplexing unit (not shown) into a single TS as an input. However, a null packet is inserted for idle time due to the remaining one TS not being input.
- the hierarchy division unit 3631 performs hierarchy division of up to two systems (A hierarchy, B hierarchy) in accordance with specification of hierarchy information.
- LDPC layer allocating section 3635 inputs one remaining TS, allocates layer C to be subjected to LDPC encoding to that TS, generates timing information of each TS packet, and outputs it to LDPC layer processing section 3645 together with each TS packet Do.
- FIG. 67 is a diagram showing a configuration of the LDPC hierarchical processing unit 3645.
- the LDPC layer processing unit 3645 deletes the byte interleaving unit 5211 and the convolutional encoding unit 5221 compared to the layer processing unit 3041 in the tenth embodiment shown in FIG. 58, and the BCH encoding unit 3711 and the LDPC encoding unit 3721. Is added. Further, the LDPC hierarchical processing unit 3645 has a configuration in which the bit interleaving unit 5231 is replaced with a bit interleaving unit 3731.
- the BCH encoding unit 3711 collects data included in one or more TS packets output from the LDPC layer allocation unit 3635, stores timing information in the header and uses it as information bits, and BCH code Perform.
- the energy spreading unit 5201 is similar to the operation in FIG.
- the LDPC encoding unit 3721 performs LDPC encoding
- the bit interleaving unit 3731 generally performs bit interleaving different from the bit interleaving unit 5231 of the ISDB-T system in FIG. 58 in order to extract the capability of LDPC encoding.
- the operation after mapping unit 5241 is the same as the operation in hierarchical processing unit 3041 shown in FIG.
- the layer combining unit 5051 performs the same operation as the layer processing unit 3041 shown in FIG. 58 on the output data from the layer processing units 3041-AB and the layer processing unit 3454-C. Do.
- the TMCC / AC signal generation unit 3691 generates a TMCC signal which is control information and an AC signal which is additional information. However, for segments belonging to the MIMO transmission and MISO transmission layers, TMCC signals for MIMO and MISO are generated, and for segments belonging to the LDPC layer, TMCC signals for LDPC coding are generated. .
- FIG. 68 shows the definition of a TMCC signal related to LDPC coding.
- FIGS. 68 (a) and 68 (b) show the definitions of the convolutional coding rate in the ISDB-T system and the tenth embodiment, respectively.
- LDPC encoding is assigned to "101" which was undefined in the ISDB-T method in the tenth embodiment.
- a segment that performs LDPC coding can be recognized as "not receivable" by existing ISDB-T receivers, and a receiver compatible with LDPC coding can be recognized as a segment of LDPC coding. .
- FIG. 68C shows the definitions of B110 to B121 in the tenth embodiment.
- 1/2 (LDPC coding rate), 2 (“LDPC coding rate”) are assigned to “000” to “100” of B113 to B115, which were undefined in the ISDB-T method in the tenth embodiment.
- / 3 (LDPC coding rate), 3/4 (LDPC coding rate), 5/6 (LDPC coding rate), 7/8 (LDPC coding rate) are allocated.
- the other operation is the same as that of transmitting apparatus 3000 in the ninth embodiment shown in FIG.
- a transmission apparatus, a transmission method, and a program that make it possible to coexist the existing ISDB-T system and the new system using the polarization MIMO transmission technology and facilitate the introduction of the new system. Can be provided.
- the BCH code + LDPC code as the error correction coding system in the new system, it is possible to improve the error correction capability.
- the polarization diversity effect can be sufficiently exhibited, and in particular, a processing method with high affinity to the existing ISDB-T system (time interleaving same as ISDB-T system, It is characterized in that it is realized using frequency interleaving or the like.
- the TMCC signal decoding unit 3335 majority decodes the demodulation results collected for each segment to decode the TMCC signal, as in the operation of the ninth embodiment. Therefore, the TMCC signal decoding unit 3335 can also decode the TMCC signal of the segment to be subjected to LDPC encoding, and determines that the segment can not be received according to the definition of the TMCC signal shown in FIG.
- the determination result is output to the demodulator 3311, the frequency deinterleaver 3315, the time deinterleaver 3321, the multi-tiered TS reproducer 3331, and the FEC decoder 3333.
- Each part is allocated to the ISDB-T hierarchy. Process only the specified segment.
- the ISDB-T receiver 3300 in FIG. 61 outputs the TS of the ISDB-T scheme layer subjected to error correction decoding for the signal transmitted from the transmitter 3600 in FIG.
- FIG. 69 is a diagram showing a configuration of receiving apparatus 3800 according to Embodiment 10 of the present invention.
- the reception device 3800 in FIG. 69 corresponds to the transmission device 3600 in FIG. 66, and reflects the function of the transmission device 3600.
- the same components as the existing ISDB-T receiver and the receiver according to the ninth embodiment use the same reference numerals, and the description thereof is omitted.
- Receiving apparatus 3800 is different from receiving apparatus 3500 in the ninth embodiment shown in FIG. 64 in multi-layer TS reproducing section 3531, FEC decoding section 3333 and TMCC signal decoding section 3535 respectively in multi-layer TS reproducing section 3831 and
- the configuration is such that the FEC decoding unit 3833 and the TMCC signal decoding unit 3835 are replaced.
- the TMCC signal decoding unit 3835 recognizes the definition of the TMCC signal shown in FIG. 68, and detects that LDPC coding is being performed on a segment to be subjected to LDPC coding, and also detects an LDPC coding rate.
- the detection result regarding LDPC coding is output to the multi-layer TS reproduction unit 3831 and the FEC decoding unit 3833.
- FIG. 70 is a diagram showing a configuration of the multi-tiered TS reproducing unit 383.
- the multi-layer TS reproduction unit 383 has a configuration in which the SISO / MISO / MIMO demapping unit 3501 is replaced with a SISO / MISO / MIMO demapping unit 3801 as compared to the multi-layer TS reproduction unit 3531 shown in FIG.
- the SISO / MISO / MIMO demapping unit 3801 outputs the data after the demapping process as LDPC layer data for the segment data to be subjected to LDPC encoding based on the input TMCC signal.
- the data after demapping processing is output to bit deinterleaver 3411 as in the operation in FIG. 62, and the operation after bit deinterleaver 3411 is as shown in FIG. 62. And output as non-LDPC hierarchical data.
- FIG. 71 is a diagram showing a configuration of the FEC decoding unit 3833.
- the FEC decoding unit 3833 compares the bit de-interleaving unit 3911, the LDPC decoding unit 3941, the BCH decoding unit 3971, and the LDPC layer / non-LDPC layer combining unit 3981. , And one more energy despreading unit 3461 is added.
- the FEC decoding unit 3833 performs the same operation as that of FIG. 63 in the Viterbi decoding unit 3441 to the RS decoding unit 3471 for non-LDPC hierarchical data. Also, the FEC decoding unit 3833 performs bit deinterleaving on the LDPC layer data in the bit deinterleaving unit 3911, performs LDPC decoding in the LDPC decoding unit 3941, performs energy despreading in the energy despreading unit 3461, and performs BCH.
- the decoding unit 3971 performs BCH decoding.
- the LDPC layer / non-LDPC layer combining unit 3981 performs processing between non-LDPC layer decoded data output from the RS decoding unit 3471 based on timing information included in the header of the LDPC layer decoded data output from the BCH decoding unit 3971. Then, by inserting LDPC layer decoded data, the decoded data of both layers are combined, and a TS subjected to error correction decoding is output.
- components other than the tuner unit 3305 may be included in the receiving device 3800 in FIG.
- FIG. 72 is a diagram showing a configuration of transmitting apparatus 4000 in Embodiment 11 of the present invention.
- a TS (Transport Stream) generation unit generates two video B (Base layer) and video E (Enhancement layer) as a video component using SVC (Scalable Video Coding). This enables allocation to a hierarchy for each component of audio, video B and video E, and makes it possible to select from the existing ISDB-T system, MISO transmission, and MIMO transmission for each hierarchy.
- SVC Scalable Video Coding
- Transmission apparatus 4000 shown in FIG. 72 has a configuration in which TS re-multiplexing unit 5011 is replaced with TS re-multiplexing unit 4011 as compared to transmission apparatus 3000 in the ninth embodiment shown in FIG. Furthermore, the transmission device 4000 of FIG. 72 has a configuration in which a hierarchy assignment unit 4005 is added.
- FIG. 73 is a diagram showing a configuration of the TS generation unit 4210.
- the TS generation unit 4210 in FIG. 73 shows a case where one program is generated in the TS, and includes one audio coding unit 4221 and one video coding unit 4222.
- the TS generation unit 4210 includes a packetization unit 4223 for each service component of audio / video B / video E in each program.
- the TS generation unit 4210 includes a packetized stream multiplexing unit 4224 and an L2 information processing unit 4225.
- the speech encoding unit 4221 performs source coding of speech.
- the video coding unit 4222 performs source coding of video using SVC, and generates two components of video B and video E.
- source coding H.264. H.264 and HEVC (H. 265).
- the packetization unit 4223 packetizes the output of the audio coding unit 4221 or the video coding unit 4222.
- the L2 information processing unit 4225 generates L2 information such as PSI (Program-Specific Information) or SI (System Information).
- the packetized stream multiplexing unit 4224 multiplexes the output of the packetization unit 4223 and the output of the L2 information processing unit 4225 to generate a TS, and outputs the TS to the transmission device 4000 shown in FIG.
- the hierarchy allocating unit 4005 allocates a hierarchy to each service component of audio / video B / video E included in the program of the TS output from the TS generation unit 4210 and L2 information. As an example in FIG. 72, allocation is as follows.
- Layer A audio of program-1
- video B L2 information layer B: image E of program-1
- FIG. 72 the audio and video B and L2 information packets to the TS remultiplexing unit 4011 are actually multiplexed and become one input.
- the operation of the TS re-multiplexing unit 4011 is as shown in FIG. 57 except that a stream composed of multiplexed audio, video B, and L2 information packets and a stream composed of video E packets are each treated as one TS. It is similar to the operation.
- the hierarchy division unit 5031 performs hierarchy division as allocated by the hierarchy allocation unit 4005.
- hierarchical processing section 3041-A operates as the existing ISDB-T system
- hierarchical processing section 3041-B operates as MISO transmission or MIMO transmission.
- allocation to layers can be made for each component of audio, video B and video E, and it is possible to select from the existing ISDB-T method, MISO transmission, and MIMO transmission for each layer.
- the existing ISDB-T method for audio and video B the layer of basic information can be received in the existing ISDB-T receiver, and the basic information portion of the program, for example, standard image quality can be obtained. You can enjoy the program.
- the TMCC signal decoding unit 3335 performs majority decision decoding on the demodulation results collected for each segment, decodes the TMCC signal, and performs B layer of MISO transmission or MIMO transmission (image E of program-1 It is determined that the segment assigned) is not receivable.
- the determination result is output to demodulation unit 3311, frequency deinterleaving unit 3315, time deinterleaving unit 3321, multi-layer TS reproduction unit 3331, and FEC decoding unit 3333. Performs processing only for the segment to which program-1 audio, video B, and L2 information is assigned.
- the ISDB-T receiver 3300 in FIG. 61 outputs the TS of the ISDB-T scheme layer subjected to error correction decoding to the signal transmitted from the transmitter 4000 in FIG. That is, the audio and video B, L2 information of program-1 is output.
- the TMCC signal decoding unit 3535 performs MISO transmission or MIMO transmission for the segment to which the B layer of the MISO transmission or the MIMO transmission (image E of program-1) is assigned, as in the operation in the ninth embodiment.
- the carrier modulation mapping scheme (QPSK, 16 QAM, 64 QAM) is also detected.
- the detection result is output to the demodulation unit 3511, the frequency deinterleaving unit 3315, the time deinterleaving unit 3321, the multi-layer TS reproduction unit 3531 and the FEC decoding unit 3333 of each receiving antenna, and each unit is an ISDB-T scheme A hierarchy.
- the segment to which (voice-1, video B, L2 information of program-1) is allocated, and the segment to which layer B of MISO transmission or MIMO transmission (image E of program-1) is allocated are processed.
- the reception apparatus 3500 of FIG. 64 performs layer A of ISDB-T scheme and layer B of MISO transmission or MIMO transmission in which error correction decoding is performed on the signal transmitted from transmission apparatus 4000 of FIG. Output the TS. That is, all components (audio, video B, video E, L2 information) of program-1 are output.
- FIG. 74 is a diagram showing a configuration of transmitting apparatus 4300 according to Embodiment 12 of the present invention.
- the TS generation unit generates two images, video B and video E, as video components using SVC. This makes it possible to assign to layers for each component of audio, video B and video E, and to select from the existing ISDB-T method, MISO transmission and MIMO transmission for each layer, as well as using the new method.
- a BCH code + LDPC code is used as an error correction coding scheme in certain MISO transmission and MIMO transmission.
- Transmission apparatus 4300 in FIG. 74 has a configuration in which TS re-multiplexing unit 3611 is replaced with TS re-multiplexing unit 4311 as compared with transmission apparatus 3600 in the tenth embodiment shown in FIG. Furthermore, the transmitting apparatus 4300 in FIG. 74 has a configuration in which a hierarchy allocating unit 4005 is added.
- layer allocating section 4005 operates in the same manner as in Embodiment 11 to provide services of audio and video B and video E included in the program of TS output from TS generating section 4210 shown in FIG. Assign a hierarchy to each component and L2 information. As an example in FIG. 74, allocation is as follows.
- Level A audio of program-1
- the audio and video B and L2 information packets to the TS remultiplexing unit 4311 are actually multiplexed and become one input.
- the operation of the TS re-multiplexing unit 4311 treats a stream composed of multiplexed audio, video B, and L2 information packets as one TS, with respect to the idle time due to the remaining one component (video E) not being input. Is the same as the operation in FIG. 66 except that a null packet is inserted.
- the layer division unit 3631 performs layer division of the stream composed of the multiplexed audio, video B, and L2 information packets into layers A as allocated by the layer allocation unit 4005.
- the LDPC layer allocation unit 3635 receives the stream composed of the remaining one component (image E) as allocated by the layer allocation unit 4005, and allocates the C layer to be subjected to LDPC encoding to the TS, and each TS packet Timing information is generated and output to the LDPC layer processing unit 3645 together with each TS packet.
- hierarchical processing section 3041-A operates as the existing ISDB-T system
- LDPC hierarchical processing section 3645-C operates as MISO transmission or MIMO transmission.
- transmitting apparatus 4300 in FIG. 74 The other operations in transmitting apparatus 4300 in FIG. 74 are the same as in transmitting apparatus 3600 in the tenth embodiment shown in FIG.
- a BCH code + LDPC code is used as an error correction coding method in the MISO transmission and the MIMO transmission which are the method.
- the layer of basic information can be received in the existing ISDB-T receiver, and the basic information portion of the program, for example, standard image quality can be obtained. You can enjoy the program.
- the TMCC signal decoding unit 3335 majority-decodes the demodulation results collected for each segment, decodes the TMCC signal, and performs C layer of MISO transmission or MIMO transmission (image E of program-1 It is determined that the segment assigned) is not receivable.
- the determination result is output to demodulation unit 3311, frequency deinterleaving unit 3315, time deinterleaving unit 3321, multi-layer TS reproduction unit 3331, and FEC decoding unit 3333. Performs processing only for the segment to which program-1 audio, video B, and L2 information is assigned.
- the ISDB-T receiver 3300 in FIG. 61 outputs the TS of the ISDB-T scheme layer subjected to the error correction decoding to the signal transmitted from the transmitter 4300 in FIG. That is, the audio and video B, L2 information of program-1 is output.
- the TMCC signal decoding unit 3835 performs LDPC encoding as in the tenth embodiment, and performs MISO transmission even on a segment to which the C layer (image E of program-1) of MISO transmission or MIMO transmission is assigned. While detecting whether it is MIMO transmission or a carrier modulation mapping system (QPSK, 16 QAM, 64 QAM), it also detects that it is performing LDPC coding and an LDPC coding rate.
- QPSK carrier modulation mapping system
- the detection result is output to the demodulation unit 3511, the frequency deinterleaving unit 3315, the time deinterleaving unit 3321, the multi-layer TS reproduction unit 3831 and the FEC decoding unit 3833 of each receiving antenna, and each unit is an ISDB-T scheme A hierarchy.
- the receiver 3800 in FIG. 69 performs the layer of the ISDB-T scheme which has been subjected to error correction decoding and the LDPC coding to the signal transmitted from the transmitter 4300 in FIG. 74, and performs MISO transmission. Or outputs the TS of the layer of MIMO transmission. That is, all components (audio, video B, video E, L2 information) of program-1 are output.
- the present invention is not limited to the contents described in the above embodiments 9 to 12, but can be practiced in any form for achieving the object of the present invention and the related or attendant objects, for example, the following: May be
- the TMCC signal and the AC signal are transmitted as the same signal from both transmitting antennas (Tx-1 and Tx-2) without performing MIMO / MISO coding.
- the transmission may be performed from only one of the transmission antennas without performing MIMO / MISO coding.
- the ISDB-T scheme may be preferentially assigned to the central segment (data segment number 0) of the frequency band. In particular, priority may be given to the partial reception unit of the ISDB-T system.
- the number of transmission / reception antennas in MISO transmission and MIMO transmission is two, but the number is not limited to two, and may be three or more. Also, the number of transmitting and receiving antennas may be different.
- layer A is transmitted by ISDB-T, layer B or layer C by MISO or MIMO, but the present invention is not limited thereto.
- layer A is by MISO
- layer B Alternatively, layer C may be transmitted by MIMO.
- the phase change is performed on the transmit antenna 2 (Tx-2).
- the present invention is not limited to this.
- the phase change may be performed on the transmit antenna 1 (Tx-1) .
- synchronous modulation is applied to MIMO or MISO, but differential modulation may be applied.
- the service components are audio and video
- the present invention is not limited to this.
- Other examples include data components.
- the scalable coding is performed on the video.
- the present invention is not limited to this, and the scalable coding may be performed on audio and data components.
- the video B and the video E are generated by SVC.
- MVC_B Base view
- MVC_D Dependent view
- MVC Multi-view Video Coding
- the audio, video B, and L2 information is the existing ISDB-T system
- the video E is MISO transmission or MIMO transmission
- audio and L2 information may be the existing ISDB-T method
- video B may be MISO transmission
- video E may be MIMO transmission.
- time interleaving section 5061 and frequency interleaving section 5071 perform the same operation as in conventional transmission apparatus 5000 shown in FIG.
- the segment configurations of MIMO transmission and MISO transmission shown in FIG. 59 are used.
- the number of AC carriers may be reduced.
- the time interleaving unit 5061 and the frequency interleaving unit 5071 operate as null carriers by the reduced number of data carriers, and delete null carriers at the output stage.
- the time interleaving unit 5061 and the frequency interleaving unit 5071 can continue to maintain a method with high affinity to the ISDB-T scheme.
- the carrier direction density of the pilot signal for synchronous reproduction for MIMO / MISO may be doubled, for example.
- the time interleaving unit 5061 and the frequency interleaving unit 5071 can maintain the method having high affinity to the ISDB-T method.
- the above-described ninth to twelfth embodiments may relate to an implementation using hardware and software.
- the above embodiments may be implemented or performed using a computing device (processor).
- the computing device or processor may be, for example, a main processor / general purpose processor (digital purpose processor), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), other programmable logic devices, etc. May be there.
- the above embodiments may be implemented or realized by combining these devices.
- the above embodiments 9 to 12 may be realized by the mechanism of a software module executed by a processor or directly by hardware. Also, a combination of software modules and hardware implementation is possible.
- the software modules may be stored on various types of computer readable storage media such as RAM, EPROM, EEPROM, flash memory, registers, hard disk, CD-ROM, DVD, etc.
- the transmitting device (1) is a transmitting device that performs MIMO (Multiple Input Multiple Output) transmission using a plurality of basic bands, and generates an error correction coded frame by error correction coding for each data block of a predetermined length.
- An error correction coding unit, a mapping unit that maps the error correction coding frame to symbols by a predetermined number of bits to generate an error correction coding block, and MIMO coding the error correction coding block A MIMO coding unit to perform the operation, and a component of data included in the error correction coding block is distributed to two or more of the plurality of basic bands for transmission.
- the transmitting apparatus (1) in MIMO transmission using a plurality of base bands, the data component included in the error correction coding block is distributed to the two or more base bands of the plurality of base bands for transmission. By doing so, it is possible to provide a transmitting apparatus that exhibits frequency diversity effects for a plurality of base bands.
- the transmitting device (2) transmits, in the transmitting device (1), MIMO transmission using the plurality of basic bands with respect to basic information of transmission data, and transmits a single transmission information with respect to the extended information of the transmission data.
- the basic information may be transmitted using a basic band, and the basic information may be information that can be decoded alone, and the extension information may be information that can be decoded in combination with the basic information.
- the basic information of transmission data is transmitted by MIMO transmission using a plurality of basic bands, and the transmission information of extended data is transmitted using a single basic band.
- the number of transmission antennas used for the MIMO transmission may be two in the transmission device (3), and the polarization polarities of the respective transmission antennas may be different.
- the transmitting apparatus (3) in MIMO transmission using a plurality of base bands, the number of transmission antennas used for MIMO transmission is set to 2, and the polarization polarity of each transmission antenna is different. In addition to the effects, it is possible to provide a transmitter that exhibits polarization diversity effects.
- the transmitting device (4) further distributes the data component contained in the error correction coding block to two or more of the plurality of transmitting antennas used for the MIMO transmission and transmits You may
- the transmitting device (4) in MIMO transmission using a plurality of base bands, two or more transmission antennas among a plurality of transmission antennas further used for MIMO transmission, the data component included in the error correction coding block
- the transmitting apparatus that exerts spatial (antenna) diversity effects by distributing the signal to.
- the number of basic bands is K (K is a natural number of 2 or more), and the number of transmission antennas is M (M is a natural number of 2 or more)
- the MIMO coding unit has K ⁇ M output ports, each output port corresponds to each transmission antenna of each base band, and the component of each data included in the error correction coding block is the K ⁇ It may be output to all M output ports.
- the MIMO coding unit outputs the component of each data included in the error correction coding block to all transmission antennas of the entire base band.
- the MIMO coding unit may perform MIMO coding using a (K ⁇ M) row (K ⁇ M) precoding matrix.
- the MIMO coding unit uses the precoding matrix to generate each data component included in the error correction coding block over the entire base band.
- the number of basic bands is K (K is a natural number of 2 or more), and the number of transmission antennas is M (M is a natural number of 2 or more) , K output ports, each output port corresponds to each basic band, and serial / parallel (S / P: Serial to S) distributes mapping data included in the error correction coding block to the K output ports.
- a transform unit is further provided, and the MIMO coding unit is provided for each of the base bands, the MIMO coding unit for each of the base bands has M output ports, and each output port is a transmission antenna. In this case, MIMO coding may be performed on the output data of the serial-to-parallel converter.
- the serial-to-parallel converter distributes the mapping data included in the error correction coding block to the output ports corresponding to all the base bands.
- the present invention can provide a transmitter that exhibits frequency diversity effects on the fundamental band of
- the number of fundamental bands is K (K is a natural number of 2 or more), and the number of transmission antennas is M (M is a natural number of 2 or more) , K output ports, each output port corresponding to each basic band, and serial / parallel (S / P: Serial to Parallel) for distributing data included in the error correction coding frame to the K output ports.
- the MIMO coding unit, and the mapping unit for each of the fundamental bands is configured to determine the output data of the serial-to-parallel converter.
- the MIMO coding unit for each base band has M output ports, each output port corresponds to each transmitting antenna, and output data of the mapping unit for each base band against MI O coding may perform.
- the serial-to-parallel converter distributes data included in the error correction coding frame to output ports corresponding to all the basic bands. It is possible to provide a transmitting device that exhibits frequency diversity effects on the baseband.
- the MIMO coding unit for each baseband may perform MIMO coding using M rows and M columns of precoding matrices.
- the serial-to-parallel converter converts mapping data included in the error correction coding block or data included in the error correction coding frame into the entire base band.
- the number of basic bands is K (K is a natural number of 2 or more), and the number of transmission antennas is M (M is a natural number of 2 or more)
- K K is a natural number of 2 or more
- M is a natural number of 2 or more
- K K is a natural number of 2 or more
- K is a natural number of 2 or more
- M is a natural number of 2 or more
- the error correction coding unit further includes the error correction coding unit, the mapping unit, and the MIMO coding unit for each basic band, and the error correction coding unit for each basic band includes the serial-to-parallel conversion unit.
- Error correction coding on the output data of the above to generate an error correction coding frame, and output data of the error correction coding unit for each basic band, output data of the mapping unit, and output of the MIMO coding unit Any of the data
- part replacement between basic band performing replacement between baseband by a unit of a predetermined number, further comprising a may be.
- the serial-to-parallel converter distributes data blocks of a predetermined length to the output ports corresponding to all the basic bands, and corrects the error for each basic band.
- a plurality of basics are exchanged by switching a predetermined number of units between basic bands for any of the output data of the encoding unit, the output data of the mapping unit, and the output data of the MIMO encoding unit. It is possible to provide a transmitting apparatus that exhibits frequency diversity effects on bands.
- the number of basic bands is K (K is a natural number of 2 or more), and the number of transmission antennas is M (M is a natural number of 2 or more).
- the error correction coding unit further includes the error correction coding unit, the mapping unit, and the MIMO coding unit for each basic band, and the error correction coding unit for each basic band includes the serial-to-parallel conversion unit.
- the error correction coding is performed on the output data of the above to generate an error correction coding frame, and rearrangement is performed on the data output from each of M output ports provided in the MIMO coding unit for each basic band.
- M interns to perform The output data of the error correction coding unit for each basic band, the output data of the mapping unit, the output data of the MIMO coding unit, and the output data of the interleaving unit.
- the apparatus may further include: an inter-basic-band interchanging unit which performs interchanging between the basic bands by a predetermined number of units.
- the serial-to-parallel converter divides data blocks of a predetermined length into output ports corresponding to all the basic bands, and interleaves each basic band.
- the output data of the MIMO coding unit is rearranged, the output data of the error correction coding unit for each basic band, the output data of the mapping unit, the output data of the MIMO coding unit, and the interleaving unit
- a transmission apparatus can be provided that exhibits frequency diversity effects for a plurality of base bands by replacing the base band with a predetermined number of units for any of the output data.
- the MIMO coding unit for each basic band may perform MIMO coding using M rows and M columns of precoding matrices.
- the serial-to-parallel converter distributes data blocks of a predetermined length to output ports corresponding to all the basic bands, and specifies data for each basic band.
- a transmitting apparatus can be provided that exhibits frequency diversity effects for a plurality of basic bands by performing switching between basic bands by units of numbers and performing MIMO coding using a precoding matrix by the MIMO coding unit. .
- the transmitting device (13) is the transmitting device (1) or (4), wherein the MIMO coding unit regularly changes the phase of a signal transmitted from at least one antenna for each of the fundamental bands. May be provided.
- the MIMO coding unit regularly changes the phase of the signal transmitted from at least one antenna for each base band, and the error correction code
- the LOS in which the direct wave is dominant is performed by distributing the components of the data contained in the block to two or more of the plurality of basebands and transmitting them.
- the transmitter (14) is the transmitter (7) or (8) or (10), and the MIMO coding unit performs different MIMO coding for each of the fundamental bands.
- the MIMO coding unit further comprises: The MIMO coding unit performs MIMO coding using different precoding matrices of M rows and M columns for each band, and the MIMO coding unit regularly changes the phase of the signal for each base band, and the phase change is made in the base band.
- the mapping unit performs different mapping for each basic band, and the error correction coding unit performs error correction coding for different patterns for each basic band. You may do one.
- the transmission (14) in MIMO transmission using a plurality of base bands, in addition to the frequency diversity effect for a plurality of base bands, the reception quality improvement effect is exhibited by reducing the correlation regarding the transmission path characteristics between the base bands Can be provided.
- the transmitting device performs, in the transmitting device (11), different patterns for each basic band in the interleaving unit, and performs different MIMO coding for each basic band in the MIMO coding unit
- the MIMO coding unit performs MIMO coding using precoding matrices of M rows and M columns which are different for each of the basebands.
- the MIMO coding unit regularly performs signal phases for each of the basebands. Changing the phase change for each of the base bands, mapping the different patterns for each of the base bands in the mapping unit, and correcting the patterns of the patterns different for each of the base bands in the error correction coding unit At least one of encoding may be performed.
- the transmitter in MIMO transmission using a plurality of base bands, in addition to the frequency diversity effect for a plurality of base bands, the reception quality improvement effect by reducing the correlation regarding the transmission path characteristics between the base bands is exhibited Can be provided.
- the interleaving unit rearranges patterns different for each basic band, and M interleaving units in the basic band rearrange the same patterns. You may do it.
- the amount of operation in MIMO demapping is increased by the interleaving unit rearranging different patterns for each base band and rearranging the same pattern for each transmitting antenna in the base band. It is possible to provide a transmitting apparatus that exhibits the effect of improving the reception quality by reducing the correlation with respect to the transmission path characteristics between the base bands, in addition to the frequency diversity effects regarding the plurality of base bands.
- the receiving device (17) is configured to transmit data components included in the error correction coding block to two or more of the plurality of fundamental bands by MIMO (Multiple Input Multiple Output) transmission using a plurality of fundamental bands.
- MIMO Multiple Input Multiple Output
- an error correction decoding unit that performs error correction decoding on the output of.
- the demodulation unit demodulates for each base band
- the MIMO demapping unit demodulates the data Perform MIMO demapping
- the error correction decoding unit performs error correction decoding on the output of the MIMO demapping to receive a signal transmitted by MIMO transmission using a plurality of basic bands Receiver (reception method) can be provided.
- the transmission method (18) is a transmission method for performing MIMO (Multiple Input Multiple Output) transmission using a plurality of basic bands, and error correction coding is performed for each data block of a predetermined length to generate an error correction coding frame.
- MIMO Multiple Input Multiple Output
- the transmission method (18) in MIMO transmission using a plurality of base bands, components of data included in the error correction coding block are distributed to two or more base bands among the plurality of base bands and transmission is performed. By doing this, it is possible to provide a transmission method that exhibits frequency diversity effects for multiple basebands.
- a receiving method (19) is a MIMO (Multiple Input Multiple Output) transmission using a plurality of base bands to transmit data components included in an error correction coding block to two or more of the plurality of base bands.
- a receiving method for receiving a signal distributed to a band comprising: a demodulation step of performing demodulation for each basic band; a MIMO demapping step of performing MIMO demapping on the demodulated data; and MIMO demapping And an error correction decoding step of performing error correction decoding on the output of
- the transmitting device (20) is a transmitting device having a function of performing communication in Multiple Input Multiple Output (MIMO), and includes an error correction coding unit that performs error correction coding on transmission data, and the error correction code.
- a mapping unit that maps the encoded data into modulation symbols by a predetermined number of bits to generate mapping data, a MIMO coding unit that performs MIMO coding on the mapping data, and control information including transmission parameters
- a control information generation unit to generate, a MIMO configuration data to be transmitted from the MIMO encoding unit, and the control information are mixed in the same OFDM symbol to form a transmission frame
- OFDM signal generation unit that applies orthogonal frequency division multiplexing (OFDM).
- a transmission frame is configured by mixing MIMO encoded data and control information including transmission parameters in the same OFDM symbol, and MIMO encoding is not performed on the control information. Enables transmission of a new scheme using MIMO transmission technology without adversely affecting the SISO receiver by performing transmission as the same content from a single transmit antenna or transmitting from only one transmit antenna A transmitter can be provided.
- the MIMO coding unit has M output ports, Each output port may correspond to each transmit antenna, and may further include M interleaving units that rearrange data from the M output ports.
- each output port of the MIMO encoding unit corresponds to each transmitting antenna, and an interleave unit is provided for each data from the output port to adversely affect the SISO receiver. Accordingly, it is possible to provide a transmitter that enables the introduction of a new scheme using MIMO transmission technology.
- the M interleaving units may perform the same pattern rearrangement in the transmission device (21).
- each output port of the MIMO coding unit corresponds to each transmitting antenna
- the SISO system is provided by providing an interleaving unit that rearranges the same pattern for each data from the output port.
- the present invention can provide a transmitter capable of introducing a new scheme using the MIMO transmission technology without adversely affecting the SISO receiver by using interleaving with high affinity to the SISO scheme.
- the number of transmission antennas used for the MIMO may be two in the transmission device (20), and the polarization polarities of the respective transmission antennas may be different.
- the number of transmit antennas used for MIMO is 2, and the polarization polarity of each transmit antenna is different, so that a transmitter that exhibits polarization diversity effect in a new scheme using MIMO transmission technology Can be provided.
- the transmitting device (24) may distribute the components of the data contained in the mapping data to all the transmitting antennas in the transmitting device (20) for transmission.
- space (antenna) diversity effect is exhibited in the new scheme using the MIMO transmission technology by distributing the data components contained in the mapping data to all the transmitting antennas and transmitting them. Can be provided.
- the MIMO coding unit has M output ports, Each output port may correspond to each transmit antenna, and a component of each data included in the mapping data may be output to all the M output ports.
- the MIMO coding unit outputs the component of each data included in the mapping data to the output port corresponding to all the transmitting antennas, so that the new scheme using the MIMO transmission technology can (Antenna) It is possible to provide a transmitting apparatus that exhibits a diversity effect.
- the MIMO coding unit may perform MIMO coding using a precoding matrix of M rows and M columns.
- the MIMO coding section uses MIMO transmission technology by outputting the components of each data contained in the mapping data to the output port corresponding to all the transmission antennas using the precoding matrix.
- the new system it is possible to provide a transmitter that exhibits space (antenna) diversity effects.
- the MIMO coding unit may include a phase changing unit that regularly changes the phase of a signal transmitted from at least one antenna. .
- the MIMO coding unit regularly changes the phase of the signal transmitted from at least one antenna, and distributes the data component contained in the mapping data to all the transmitting antennas for transmission
- the present invention provides a transmitting apparatus that exhibits an effect of improving reception quality of data in a LOS environment in which direct waves are dominant. it can.
- the transmitting device (28) further includes a layer dividing unit for dividing transmission data into L layers (L is a natural number of 2 or more) in the transmitting device (20), and the MIMO encoding unit is provided for each layer. And a segment division unit for dividing the transmission band into Q segments (Q is a natural number of 2 or more) and assigning the MIMO encoded data of each layer to any of the segments;
- the transmission frame may be configured by mixing the data output from the segment division unit and the control information in the same segment.
- SISO system reception compatible with hierarchization and segmentation is realized by hierarchization, segmentation, combining transmission data with MIMO encoded data and control information in the same segment. It is possible to provide a transmitter capable of introducing a new scheme using the MIMO transmission technology without adversely affecting the device.
- the transmitting device (29) further has a function of performing communication with SISO (Single Input Single Output) in the transmitting device (20), and divides transmission data into L (L is a natural number of 2 or more) layers And a MIMO / SISO coding unit that performs MIMO or SISO coding on the mapping data for each hierarchy, and has Q transmission bands (where Q is a natural number of 2 or more).
- the data processing apparatus further includes a segment division unit that divides into segments and assigns the MIMO or SISO encoded data of each layer to different segments, and the frame configuration unit includes data output from the segment division unit and the control information.
- the transmission frame may be configured to be mixed in the same segment.
- MIMO or SISO coding is performed for each layer, the segment division unit assigns MIMO or SISO encoded data of each layer to different segments, and the frame configuration unit is output from the segment division unit Providing a transmitting apparatus that facilitates mixing of the new scheme using the SISO scheme and the new scheme using the MIMO transmission technology by configuring the transmission frame by mixing data and control information in the same segment, and facilitating the introduction of the new scheme.
- a transmitting apparatus that facilitates mixing of the new scheme using the SISO scheme and the new scheme using the MIMO transmission technology by configuring the transmission frame by mixing data and control information in the same segment, and facilitating the introduction of the new scheme.
- the layer division unit divides the basic information and the extension information of transmission data into different layers, and performs MIMO / SISO coding of the layer to which the basic information is allocated.
- the unit performs SISO encoding, and the MIMO / SISO encoding unit of the layer to which the extension information is assigned performs MIMO encoding, the basic information is information that can be decoded independently, and the extension information is the information The information may be decodable in combination with the basic information.
- the SISO receiver is basic by performing SISO coding on the hierarchy of transmission data basic information and performing MIMO coding on the transmission data extension information hierarchy.
- a hierarchy of information can be received, and a receiver compatible with the new scheme using the MIMO transmission technology can provide a transmitting apparatus capable of receiving the hierarchy of basic information and extended information.
- control information generation unit may generate control information indicating MIMO or SISO for each hierarchy.
- the transmitting apparatus (31) by generating control information indicating MIMO or SISO for each hierarchy, it is possible to mix the SISO system and the new system using the MIMO transmission technology, thereby facilitating the introduction of the new system.
- An apparatus can be provided.
- the transmitter (32) generates different pilot signal patterns to be applied to the segment to which the MIMO encoded data is allocated and the segment to which the SISO encoded data is allocated in the transmitter (29) May further include a pilot signal generation unit.
- the SISO scheme and the MIMO are generated by generating different pilot signal patterns to be applied to the segment to which the MIMO encoded data is allocated and the segment to which the SISO encoded data is allocated. It is possible to provide a transmitter capable of mixing new methods using transmission technology and facilitating the introduction of new methods.
- the pilot signal generation unit performs CP (for only one transmitting antenna) for the lowest frequency subcarrier of the segment to which the MIMO encoded data is assigned.
- CP for only one transmitting antenna
- a Continual Pilot signal may be placed, and null signals may be placed on all the remaining transmitting antennas.
- the CP signal is allocated to only one transmit antenna for the lowest frequency subcarrier of the segment to which MIMO encoded data is assigned, and null signals are allocated to all the remaining transmit antennas.
- the error correction coding layer allocation unit further includes a differential correction coding layer allocation unit that outputs the data together with the allocated data, and the error correction coding unit collects output data of the differential correction coding layer allocation unit and stores the timing information in a header It may be a bit and error correction coding may be performed.
- the different-correction coding layer allocation unit allocates at least a part of the transmission data to a layer that performs error correction coding different from other layers and generates timing information.
- the frame configuration unit may make the subcarrier arrangement pattern of the control information identical in all segments.
- the transmitting apparatus (35) by making the subcarrier arrangement pattern of control information identical in all segments, MIMO and / or MIMO can be performed without adversely affecting the receiver of the SISO scheme corresponding to layering and segmentation. It is possible to provide a transmitter capable of introducing a new scheme using MISO.
- the receiving device (36) is a receiving device having a function to execute communication in Multiple Input Multiple Output (MIMO), and is a transmission in which control information including MIMO encoded data and transmission parameters coexist in the same OFDM symbol.
- a reception unit that receives a frame, a control information decoding unit that decodes the control information and acquires transmission parameters, and a transmission data demodulation unit that demodulates MIMO encoded data based on the transmission parameters, MIMO encoding is not performed on control information, and transmission is performed as the same content from a plurality of transmission antennas, or transmission is performed only from one transmission antenna.
- the control information decoding unit decodes the control information to obtain the transmission parameter
- the transmission data demodulation unit transmission data demodulation step
- Receiving apparatus for receiving a signal transmitted by MIMO transmission in which MIMO encoded data and control information including the transmission parameter are mixed in the same OFDM symbol by demodulating MIMO encoded data based on the transmission parameter (reception method (reception method) ) Can be provided.
- the transmission method (37) is a transmission method in a transmission apparatus having a function of executing communication in Multiple Input Multiple Output (MIMO), and includes an error correction coding step of error correction coding on transmission data; A mapping step of mapping error-correction-coded data into modulation symbols by a predetermined number of bits to generate mapping data, a MIMO coding step of performing MIMO coding on the mapping data, and transmission parameters A control information generation step of generating control information; a frame configuration step of configuring a transmission frame by mixing the MIMO encoded data generated in the MIMO encoding step and the control information in the same OFDM symbol; For transmission frames, OFDM (Orthogonal Frequency Division Multipl (e) OFDM signal generation step applying the scheme, wherein the control information is not subjected to MIMO coding, and transmission is performed as the same content from a plurality of transmission antennas, or transmission is performed from only one transmission antenna It is characterized by doing.
- MIMO Multiple Input Multiple Output
- a transmission frame is configured by mixing MIMO encoded data and control information including transmission parameters in the same OFDM symbol, and the control information is not subjected to MIMO encoding, Enables transmission of a new scheme using MIMO transmission technology without adversely affecting the SISO receiver by performing transmission as the same content from a single transmit antenna or transmitting from only one transmit antenna
- a transmission method can be provided.
- a receiving method (38) is a receiving method in a receiving apparatus having a function of executing communication by MIMO (Multiple Input Multiple Output), and is a transmission frame in which MIMO encoded data and the control information are mixed in the same OFDM symbol. And a control data decoding step for decoding the control information to obtain a transmission parameter, and a transmission data demodulation step for demodulating MIMO encoded data based on the transmission parameter, the control information
- MIMO coding is not performed, and transmission is performed as the same content from a plurality of transmission antennas, or transmission is performed only from one transmission antenna.
- the transmitting apparatus, transmitting method, receiving apparatus, receiving method, integrated circuit, and program according to the present invention can be applied to the MIMO transmission scheme.
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Abstract
Description
欧州における地上デジタルテレビ放送の伝送規格であるDVB―T(DVB-Terrestrial)方式により、欧州を初め、欧州以外の国々でもテレビ放送のデジタル化が広く進行している。一方、周波数利用効率改善を目的として、第2世代地上デジタルテレビ放送であるDVB―T2方式の規格化が2006年より開始され、2009年に英国で本放送によるHDTVサービスが開始された。DVB―T2方式はDVB―Tと同じく、OFDM(Orthogonal Frequency Division Multiplexing:直交周波数分割多重)方式を採用している(非特許文献1、2)。
フレーム群基本ブロック=N_Fフレーム(N_F=1~255)
フレーム=P1シンボル+aP1シンボル+P2シンボル+データシンボル
P1シンボル=1シンボル
aP1シンボル=0~1シンボル
P2シンボル=N_P2シンボル(N_P2はFFTサイズにより一意)
データシンボル=L_dataシンボル(L_dataは可変、上限と下限あり)
P1シンボルはFFTサイズ1k、GI(Guard Interval)=1/2で送信される。P1シンボルはS1の3ビットにより、そのP1シンボルから開始するフレームのフォーマット(NGH_SISO、NGH_MISO、それ以外を示すESCなど)を送信する。
<送信装置及び送信方法>
図1は、本発明の実施の形態1における送信装置100の構成を示す図である。従来の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
図4は、本発明の実施の形態1における受信装置200の構成を示す図である。図4の受信装置200は、図1の送信装置100に対応し、送信装置100の機能を反映するものである。
なお、図2に示すMIMO-PLP処理部131を図5に示すMIMO-PLP処理部132に置き換えてもよい。図5に示すMIMO-PLP処理部132は図2に示すMIMO-PLP処理部131と比較して、MIMO符号化部176をMIMO符号化部177に置き換えた構成である。更に周波数チャンネルB(CH-B)に対する2つのインターリーブ部2074-3と2074-4をそれぞれインターリーブ部174-3と174-4にそれぞれ置き換えた構成である。
以上の図5に示すMIMO-PLP処理部132及び図6に示すL1情報処理部142が適用された場合に対する受信装置250の構成を図7に示す。図7に示す受信装置250は図4に示す受信装置200と比較して、周波数チャンネルB(CH-B)用のPLP用デインターリーブ部221BをPLP用デインターリーブ部222Bに置き換え、MIMOデマッピング部232をMIMOデマッピング部235に置き換えた構成である。図7において周波数チャンネルB(CH-B)用のPLP用デインターリーブ部222Bは、図5におけるインターリーブ部174と逆の並び替えを行う。またMIMOデマッピング部235は、式(4)に示す位相変更行列X(k)の代わりに式(11)に示す位相変更行列X(k)を考慮して、式(9)と式(10)を用いて最尤復号(MLD)を行う。
<送信装置及び送信方法>
図8は、本発明の実施の形態2における送信装置300の構成を示す図である。従来の送信装置、及び実施の形態1の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
図13は、本発明の実施の形態2における受信装置400の構成を示す図である。図13の受信装置400は、図8の送信装置300に対応し、送信装置300の機能を反映するものである。従来の受信装置、及び実施の形態1の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
なお、図9に示すMIMO-PLP処理部331を図14に示すMIMO-PLP処理部333に置き換えてもよい。図14に示すMIMO-PLP処理部333は図9に示すMIMO-PLP処理部331と比較して、MIMO符号化部376BをMIMO符号化部377Bに置き換えた構成である。更に周波数チャンネルB(CH-B)に対する2つのインターリーブ部2074-3と2074-4をそれぞれインターリーブ部174-3と174-4にそれぞれ置き換えた構成である。
以上の図14に示すMIMO-PLP処理部333または図15に示すMIMO-PLP処理部334と、図16に示すL1情報処理部343または図17に示すL1情報処理部344が適用された場合に対する受信装置450の構成を図18に示す。図18に示す受信装置450は図13に示す受信装置400と比較して、周波数チャンネルB(CH-B)用のPLP用デインターリーブ部221BとMIMOデマッピング部432BをそれぞれPLP用デインターリーブ部222BとMIMOデマッピング部434Bに置き換えた構成である。図18において周波数チャンネルB(CH-B)用のPLP用デインターリーブ部222Bは図7のそれと同様の動作を行う。また周波数チャンネルB(CH-B)用MIMOデマッピング部434Bは、式(17)に示す固定プリコーディング行列F_Bの代わりに式(28)に示す固定プリコーディング行列F_Bを考慮して、式(26)と式(27)を用いて最尤復号(MLD)を行う。また周波数チャンネルB(CH-B)用MIMOデマッピング部434Bは、式(19)に示す位相変更行列X_B(k)の代わりに式(29)に示す位相変更行列X_B(k)を考慮して、式(26)と式(27)を用いて最尤復号(MLD)を行う。更に、図15に示すMIMO-PLP処理部334と図17に示すL1情報処理部344のように、周波数チャンネルB(CH-B)が周波数チャンネルA(CH-A)と異なるパターンのマッピングを行っている場合には、それも考慮して最尤復号(MLD)を行う。
<送信装置及び送信方法>
図19は、本発明の実施の形態3における送信装置500の構成を示す図である。従来の送信装置、及び実施の形態1~2の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
Tx-1,CH-A:u1_2k+1(FB-(2N-1)),u3_2k+2(FB-2N)
Tx-2,CH-A:u2_2k+1(FB-(2N-1)),u4_2k+2(FB-2N)
Tx-1,CH-B:u3_2k+1(FB-2N),u1_2k+2(FB-2N-1)
Tx-2,CH-B:u4_2k+1(FB-2N),u4_2k+2(FB-2N-1)
(k=0,1,…,(Ncells/2)-1)
但し、uR_T(FB-L)はインターリーブ部2074-Rから出力されるFB-Lの先頭からT番目のマッピングデータ(cell)の成分であり、NcellsはFECブロック中のcell数である。これにより、FECブロック中のマッピングデータ(cell)の内、半分の成分は一方の周波数チャンネル(CH-A)の2つの送信アンテナ(Tx-1、Tx-2)それぞれから送信される。また残り半分の成分は他方の周波数チャンネル(CH-B)の2つの送信アンテナ(Tx-1、Tx-2)それぞれから送信される。
図23は、本発明の実施の形態3における受信装置600の構成を示す図である。図23の受信装置600は、図19の送信装置500に対応し、送信装置500の機能を反映するものである。従来の受信装置、及び実施の形態1~2の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
なお、図20に示すMIMO-PLP処理部531を図24に示すMIMO-PLP処理部532に置き換えてもよい。図24に示すMIMO-PLP処理部532は図20に示すMIMO-PLP処理部531と比較して、FEC符号化部2072Bとマッピング部2073BとMIMO符号化部376Bをそれぞれ、FEC符号化部572Bとマッピング部373BとMIMO符号化部377Bに置き換えた構成である。更に2つのインターリーブ部2074-3と2074-4をそれぞれインターリーブ部174-3と174-4にそれぞれ置き換えた構成である。
以上の図24に示すMIMO-PLP処理部532及び図25に示すL1情報処理部542が適用された場合に対する受信装置650の構成を図26に示す。図26に示す受信装置650は図23に示す受信装置600と比較して、PLP用デインターリーブ部221BとMIMOデマッピング部432BとFEC復号化部233をそれぞれ、PLP用デインターリーブ部222BとMIMOデマッピング部434BとFEC復号化部633に置き換えた構成である。図26においてPLP用デインターリーブ部222BとMIMOデマッピング部434Bの動作は、図18での動作と同様である。FEC復号化部633はLDPC復号において、MIMOデマッピング部434Bから出力される各フレームのFECブロックFB-2N(N=1,2,…,(Nblocks/2))と、MIMOデマッピング部432Aから出力される各フレームのFECブロックFB-(2N-1)に対して、それぞれ異なるパリティ検査多項式を用いて、LDPC復号を行う。その他の動作は、図23に示す受信装置600と同様である。
<送信装置及び送信方法>
図27は、本発明の実施の形態4における送信装置700の構成を示す図である。従来の送信装置、及び実施の形態1~3の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
図29は、本発明の実施の形態4における受信装置800の構成を示す図である。図29の受信装置800は、図27の送信装置700に対応し、送信装置700の機能を反映するものである。従来の受信装置、及び実施の形態1~3の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。図29の受信装置800は図23に示す実施の形態3における受信装置600と比較して、周波数チャンネル間逆入替部637の配置をPLP用デインターリーブ部221前段からMIMOデマッピング部432前段に変更した構成である。
なお、図28に示すMIMO-PLP処理部731を図30に示すMIMO-PLP処理部732に置き換えてもよい。図30に示すMIMO-PLP処理部732は図28に示すMIMO-PLP処理部731と比較して、FEC符号化部2072Bとマッピング部2073BとMIMO符号化部376Bをそれぞれ、FEC符号化部572Bとマッピング部373BとMIMO符号化部377Bに置き換えた構成である。更に2つのインターリーブ部2074-3と2074-4をそれぞれインターリーブ部174-3と174-4にそれぞれ置き換えた構成である。
以上の図30に示すMIMO-PLP処理部732が適用された場合に対する受信装置850の構成を図31に示す。図31に示す受信装置850は図29に示す受信装置800と比較して、PLP用デインターリーブ部221BとMIMOデマッピング部432BとFEC復号化部233をそれぞれ、PLP用デインターリーブ部222BとMIMOデマッピング部434BとFEC復号化部633に置き換えた構成である。図31においてPLP用デインターリーブ部222B、MIMOデマッピング部434B、FEC復号化部633の動作は、図26での動作と同様である。その他の動作は、図29に示す受信装置800と同様である。
<送信装置及び送信方法>
図32は、本発明の実施の形態5における送信装置900の構成を示す図である。従来の送信装置、及び実施の形態1~4の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
MIMO符号化部376Bへの出力:vB_2k+1(FB-2N),vB_2k+2(FB-2N),vA_2k+3(FB-(2N-1)),vA_2k+4(FB-(2N-1))
(k=0,1,…,(Ncells/2)-1)(N=1,2,…,(Nblocks/2))
但し、vA_T(FB-L)はマッピング部2073Aから出力されるFB-Lの先頭からT番目のマッピングデータ(cell)であり、vB_T(FB-L)はマッピング部2073Bから出力されるFB-Lの先頭からT番目のマッピングデータ(cell)であり、NcellsはFECブロック中のcell数であり、Nblocksはフレーム中のFECブロック数である。なお、選択信号は各FECブロックの先頭から2cell単位で“0”、“0”、“1”、“1”“0”、“0”、“1”、“1”、…の交番とは限らず、好ましくは“0”と“1”の数が均等に近ければよい。
図36は、本発明の実施の形態5における受信装置1000の構成を示す図である。図36の受信装置1000は、図32の送信装置900に対応し、送信装置900の機能を反映するものである。従来の受信装置、及び実施の形態1~4の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。図36の受信装置1000は図29に示す実施の形態4における受信装置800と比較して、MIMOデマッピング部432前段の周波数チャンネル間逆入替部637をP/S変換部635前段の周波数チャンネル間逆入替部1037に置き換えた構成である。
なお、図33に示すMIMO-PLP処理部931を図37に示すMIMO-PLP処理部932に置き換えてもよい。図37に示すMIMO-PLP処理部932は図33に示すMIMO-PLP処理部931と比較して、FEC符号化部2072Bとマッピング部2073BとMIMO符号化部376Bをそれぞれ、FEC符号化部572Bとマッピング部373BとMIMO符号化部377Bに置き換えた構成である。更に2つのインターリーブ部2074-3と2074-4をそれぞれインターリーブ部174-3と174-4にそれぞれ置き換えた構成である。図37において、FEC符号化部572B、マッピング部373B、MIMO符号化部377B、及びインターリーブ部174-3と174-4の動作は、図24での動作と同様である。その他の動作は、図33に示すMIMO-PLP処理部931と同様である。これにより、2つの周波数チャンネル(CH-A、CH-B)間の伝送路特性に関する相関性を低減して受信装置におけるデータの受信品質が向上するという効果を得ることができる。
以上の図37に示すMIMO-PLP処理部932及び図38に示すL1情報処理部942が適用された場合に対する受信装置1050の構成を図39に示す。図39に示す受信装置1050は図36に示す受信装置1000と比較して、PLP用デインターリーブ部221BとMIMOデマッピング部432BとFEC復号化部233をそれぞれ、PLP用デインターリーブ部222BとMIMOデマッピング部434BとFEC復号化部633に置き換えた構成である。図39においてPLP用デインターリーブ部222B、MIMOデマッピング部434B、FEC復号化部633の動作は、図26での動作と同様である。その他の動作は、図36に示す受信装置1000と同様である。
<送信装置及び送信方法>
図40は、本発明の実施の形態6における送信装置1100の構成を示す図である。従来の送信装置、及び実施の形態1~5の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
本発明の実施の形態6における受信装置は、図36に示す実施の形態5における受信装置1000と同じ構成を用いることができる。
なお、図41に示すMIMO-PLP処理部1131を図44に示すMIMO-PLP処理部1132に置き換えてもよい。図44に示すMIMO-PLP処理部1132は図41に示すMIMO-PLP処理部1131と比較して、FEC符号化部2072Bとマッピング部2073BとMIMO符号化部376Bをそれぞれ、FEC符号化部572Bとマッピング部373BとMIMO符号化部377Bに置き換えた構成である。更に2つのインターリーブ部2074-3と2074-4をそれぞれインターリーブ部174-3と174-4にそれぞれ置き換えた構成である。
以上の図44に示すMIMO-PLP処理部1132及び図45に示すL1情報処理部1142が適用された場合に対する受信装置は、図39に示す実施の形態5における受信装置1050と同じ構成を用いることができる。
<送信装置及び送信方法>
図46は、本発明の実施の形態7における送信装置1300の構成を示す図である。従来の送信装置、及び実施の形態1~6の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。本実施の形態7では、TS(Transport Stream)生成部1210において、SVC(Scalable Video Coding)を用いて映像コンポーネントとして映像B(Base layer)と映像E(Enhancement layer)の2つを生成する。これにより、音声、映像B、映像Eのコンポーネント毎にPLPに割当を行い、PLP毎に複数の基本帯域を用いたMIMO伝送と単一の基本帯域を用いたMIMO伝送を選択することを可能とする。
PLP-2:TS-1のプログラム-1の映像E
PLP-3:TS-2のプログラム-1の音声、映像B、L2情報
PLP-4:TS-2のプログラム-1の映像E
図46において、MIMO-PLP処理部2031への音声、映像B、L2情報パケットは実際には多重化されて、1つの入力となる。MIMO-PLP処理部2031の動作は、図55での動作と同様である。また映像Eパケットが入力されると、MIMO-PLP処理部331の動作は、図9での動作と同様である。
図49は、本発明の実施の形態7における受信装置1400の構成を示す図である。図49の受信装置1400は、図46の送信装置1300に対応し、送信装置1300の機能を反映するものである。従来の受信装置、及び実施の形態1~6の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。図49の受信装置1400は図13に示す実施の形態2における受信装置400と比較して、P/S変換部435をP/S変換部1435に置き換えた構成である。
<送信装置及び送信方法>
図51は、本発明の実施の形態8における送信装置150の構成を示す図である。従来の送信装置、及び実施の形態1~7の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。本実施の形態8では、2つの周波数チャンネル(CH-A、CH-B)が隣接している場合に、フレーム構成部より後段の処理に関して、2つの周波数チャンネルを一括して行う。
図52は、本発明の実施の形態8における受信装置270の構成を示す図である。図52の受信装置270は、2つの周波数チャンネル(CH-A、CH-B)が隣接している場合の図51の送信装置150及び図1の送信装置100に対応し、送信装置150及び100の機能を反映するものである。従来の受信装置、及び実施の形態1~7の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。図52の受信装置270は図4に示す実施の形態1における受信装置200と比較して、4つのチューナ部205と4つのA/D変換部208と4つの復調部211をそれぞれ、2つのチューナ部206と2つのA/D変換部209と2つの復調部212に置き換えた構成である。更に、2つのS/P変換部214を追加した構成である。
本発明は上記の実施の形態で説明した内容に限定されず、本発明の目的とそれに関連又は付随する目的を達成するためのいかなる形態においても実施可能であり、例えば、以下であってもよい。
ところで、国内地上テレビ放送は2011年7月に完全にデジタル放送に移行され、伝送規格としてISDB―T(ISDB-Terrestrial)方式を用いてHDTVサービスが行われている。ISDB―T方式はOFDM(Orthogonal Frequency Division Multiplexing:直交周波数分割多重)方式を採用している(非特許文献4)。
<送信装置及び送信方法>
図57は、本発明の実施の形態9における送信装置3000の構成を示す図である。従来の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
図61は、既存のISDB―T受信装置3300の構成を示す図である。図61のISDB―T受信装置3300は、図75の送信装置5000に対応し、送信装置5000の機能を反映するものである。
図64は、本発明の実施の形態9における受信装置3500の構成を示す図である。図64の受信装置3500は、図57の送信装置3000に対応し、送信装置3000の機能を反映するものである。既存のISDB―T受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
<送信装置及び送信方法>
図66は、本発明の実施の形態10における送信装置3600の構成を示す図である。従来の送信装置、及び実施の形態9の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
図66の送信装置3600から送信された信号に対する図61のISDB―T受信装置3300の動作について、実施の形態9における図57の送信装置3000から送信された信号に対する動作と異なる点のみ説明する。
図69は、本発明の実施の形態10における受信装置3800の構成を示す図である。図69の受信装置3800は、図66の送信装置3600に対応し、送信装置3600の機能を反映するものである。既存のISDB―T受信装置、及び実施の形態9の受信装置と同じ構成要素は、同じ符号を用い、説明を省略する。
<送信装置及び送信方法>
図72は、本発明の実施の形態11における送信装置4000の構成を示す図である。従来の送信装置、及び実施の形態9の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。本実施の形態11では、TS(Transport Stream)生成部において、SVC(Scalable Video Coding)を用いて映像コンポーネントとして映像B(Base layer)と映像E(Enhancement layer)の2つを生成する。これにより、音声、映像B、映像Eのコンポーネント毎に階層への割当を可能とし、階層毎に既存のISDB―T方式、MISO伝送、MIMO伝送から選択することを可能とする。
B階層:プログラム-1の映像E
図72において、TS再多重部4011への音声、映像B、L2情報パケットは実際には多重化されて、1つの入力となる。TS再多重部4011の動作は、多重化された音声、映像B、L2情報パケットで構成されたストリームと、映像Eパケットで構成されたストリームをそれぞれ1つのTSとして扱う以外は、図57での動作と同様である。
図72の送信装置4000から送信された信号に対する図61のISDB―T受信装置3300の動作について、実施の形態9における図57の送信装置3000から送信された信号に対する動作と異なる点のみ説明する。
図72の送信装置4000から送信された信号に対する図64の受信装置3500の動作について、実施の形態9における図57の送信装置3000から送信された信号に対する動作と異なる点のみ説明する。
<送信装置及び送信方法>
図74は、本発明の実施の形態12における送信装置4300の構成を示す図である。従来の送信装置、及び実施の形態9~11の送信装置と同じ構成要素は、同じ符号を用い、説明を省略する。本実施の形態11では、TS生成部において、SVCを用いて映像コンポーネントとして映像Bと映像Eの2つを生成する。これにより、音声、映像B、映像Eのコンポーネント毎に階層への割当を可能とし、階層毎に既存のISDB―T方式、MISO伝送、MIMO伝送から選択することを可能とするとともに、新方式であるMISO伝送及びMIMO伝送における誤り訂正符号化方式としてBCH符号 + LDPC符号を用いる。
C階層:プログラム-1の映像E
図74において、TS再多重部4311への音声、映像B、L2情報パケットは実際には多重化されて、1つの入力となる。TS再多重部4311の動作は、多重化された音声、映像B、L2情報パケットで構成されたストリームを1つのTSとして扱い、残り1つのコンポーネント(映像E)が入力されないことによる空き時間に対してはヌルパケットを挿入する以外は、図66での動作と同様である。
図74の送信装置4300から送信された信号に対する図61のISDB―T受信装置3300の動作について、実施の形態9における図57の送信装置3000から送信された信号に対する動作と異なる点のみ説明する。
図74の送信装置4300から送信された信号に対する図69の受信装置3800の動作について、実施の形態9における図57の送信装置3000から送信された信号に対する動作と異なる点のみ説明する。
本発明は上記の実施の形態9~12で説明した内容に限定されず、本発明の目的とそれに関連又は付随する目的を達成するためのいかなる形態においても実施可能であり、例えば、以下であってもよい。
実施の形態等に係る送信装置、送信方法、受信装置、及び受信方法とその効果についてまとめる。
200、250、270、400、450、600、650、800、850、1000、1050、1400、1450、3500、3800 受信装置
240、241、242、440、441、640、641、840、841、1040、1041、1440、1441、3341、3541、3841 集積回路
131、132、331、332、333、334、531、532、731、732、931、932、1131、1132、2031 MIMO-PLP処理部
141、142、341、342、343、344、541、542、941、942、1141、1142、1341、2041 L1情報処理部
151、1351、2051、3101、5101 フレーム構成部
161、2061、5111 OFDM信号生成部
191、2091、5121 D/A変換部
196、198、2096、5131 周波数変換部
2071 入力処理部
572、582、2072、2082 FEC符号化部
233、633、3333、3833 FEC復号化部
373、383、2073、2083、5241 マッピング部
176、177、376、377、2076、3261 MIMO符号化部
232、235、432、434 MIMOデマッピング部
174、2074 インターリーブ部
181、1381、2081 L1情報生成部
205、206、3305 チューナ部
208、209、3308 A/D変換部
211、212、3311、3511 復調部
215 周波数デインターリーブ・L1情報デインターリーブ部
591、991、1191 周波数チャンネル間入替部
637、1037 周波数チャンネル間逆入替部
221、222、 PLP用デインターリーブ部
231 選択部
214、378、379、581 S/P変換部
435、635、1435 P/S変換部
595、1195、3271 セレクタ
1210、4210 TS生成部
1321 PLP割当部
1221、4221 音声符号化部
1222、4222 映像符号化部
1223、4223 パケット化部
1224、4224 パケット化ストリーム多重化部
1225、4225 L2情報処理部
3300 ISDB-T受信装置
3611、4011、4311、5011 TS再多重部
5021 RS符号化部
3631、5031 階層分割部
3041、5041 階層処理部
5051 階層合成部
5061 時間インターリーブ部
5071 周波数インターリーブ部
3081、5081 パイロット信号生成部
3091、3691、5091 TMCC/AC信号生成部
5201 エネルギー拡散部
5211 バイトインターリーブ部
5221 畳込符号化部
3731、5231 ビットインターリーブ部
3251 MISO符号化部
3315 周波数デインターリーブ部
3321 時間デインターリーブ部
3331、3531、3831 複数階層TS再生部
3335、3535 TMCC信号復号部
3401 SISOデマッピング部
3411、3911 ビットデインターリーブ部
3421 デパンクチャ部
3431 TS再生部
3441 ビタビ復号化部
3451 バイトデインターリーブ部
3461 エネルギー逆拡散部
3471 RS復号化部
3501、3801 SISO/MISO/MIMOデマッピング部
3635 LDPC階層割当部
3645 LDPC階層処理部
3711 BCH符号化部
3721 LDPC符号化部
3941 LDPC復号化部
3971 BCH復号化部
3981 LDPC階層・非LDPC階層合成部
4005 階層割当部
5301 セグメント分割部
5311 セグメント間インターリーブ部
5321 セグメント内キャリアローテーション部
5331 セグメント内キャリアランダマイズ部
Claims (38)
- 複数の基本帯域を用いたMIMO(Multiple Input Multiple Output)伝送を行う送信装置であって、
所定長のデータブロック毎に、誤り訂正符号化して誤り訂正符号化フレームを生成する誤り訂正符号化部と、
前記誤り訂正符号化フレームを所定数のビットずつシンボルにマッピングして誤り訂正符号化ブロックを生成するマッピング部と、
前記誤り訂正符号化ブロックに対してMIMO符号化を行うMIMO符号化部と、
を有し、
前記誤り訂正符号化ブロック中に含まれるデータの成分を、前記複数の基本帯域の内2以上の基本帯域に振り分けて送信を行う
ことを特徴とする送信装置。 - 送信データの基本情報に対して、前記複数の基本帯域を用いたMIMO伝送で送信し、
前記送信データの拡張情報に対して、単一の基本帯域を用いて送信し、
前記基本情報は単独で復号可能な情報であり、
前記拡張情報は前記基本情報と組み合わせて復号可能な情報である
ことを特徴とする請求項1に記載の送信装置。 - 前記MIMO伝送に用いる送信アンテナ数を2とし、前記各送信アンテナの偏波極性が異なる
ことを特徴とする請求項1に記載の送信装置。 - 前記誤り訂正符号化ブロック中に含まれるデータの成分を、更に前記MIMO伝送に用いる複数の送信アンテナの内2以上の送信アンテナに振り分けて送信を行う
ことを特徴とする請求項1に記載の送信装置。 - 前記基本帯域の数をK(Kは2以上の自然数)、送信アンテナの数をM(Mは2以上の自然数)とすると、
前記MIMO符号化部はK×M個の出力ポートを有し、各出力ポートは各基本帯域の各送信アンテナに対応し、前記誤り訂正符号化ブロックに含まれる各データの成分を前記K×M個の全ての出力ポートに出力する
ことを特徴とする請求項1または4に記載の送信装置。 - 前記MIMO符号化部は、(K×M)行(K×M)列のプリコーディング行列を用いてMIMO符号化を行う
ことを特徴とする請求項5に記載の送信装置。 - 前記基本帯域の数をK(Kは2以上の自然数)、送信アンテナの数をM(Mは2以上の自然数)とすると、
K個の出力ポートを有し、各出力ポートは各基本帯域に対応し、前記誤り訂正符号化ブロックに含まれるマッピングデータを前記K個の出力ポートに振り分ける直並列(S/P:Serial to Parallel)変換部
を更に有し、
前記基本帯域毎に前記MIMO符号化部を有し、
前記基本帯域毎の前記MIMO符号化部はM個の出力ポートを有し、各出力ポートは各送信アンテナに対応し、前記直並列変換部の出力データに対してMIMO符号化を行う
ことを特徴とする請求項1または4に記載の送信装置。 - 前記基本帯域の数をK(Kは2以上の自然数)、送信アンテナの数をM(Mは2以上の自然数)とすると、
K個の出力ポートを有し、各出力ポートは各基本帯域に対応し、前記誤り訂正符号化フレームに含まれるデータを前記K個の出力ポートに振り分ける直並列(S/P:Serial to Parallel)変換部
を更に有し、
前記基本帯域毎に前記マッピング部と前記MIMO符号化部と、
を有し、
前記基本帯域毎の前記マッピング部は、前記直並列変換部の出力データに対して所定数のビットずつシンボルにマッピングし、
前記基本帯域毎の前記MIMO符号化部はM個の出力ポートを有し、各出力ポートは各送信アンテナに対応し、前記基本帯域毎のマッピング部の出力データに対してMIMO符号化を行う
ことを特徴とする請求項1または4に記載の送信装置。 - 前記基本帯域毎のMIMO符号化部は、M行M列のプリコーディング行列を用いてMIMO符号化を行う
ことを特徴とする請求項7または8に記載の送信装置。 - 前記基本帯域の数をK(Kは2以上の自然数)、送信アンテナの数をM(Mは2以上の自然数)とすると、
K個の出力ポートを有し、各出力ポートは各基本帯域に対応し、前記所定長のデータブロック毎に前記K個の出力ポートに振り分ける直並列(S/P:Serial to Parallel)変換部
を更に有し、
前記基本帯域毎に前記誤り訂正符号化部と前記マッピング部と前記MIMO符号化部と、
を有し、
前記基本帯域毎の前記誤り訂正符号化部は、前記直並列変換部の出力データに対して誤り訂正符号化して誤り訂正符号化フレームを生成し、
前記基本帯域毎の前記誤り訂正符号化部の出力データ、前記マッピング部の出力データ、および前記MIMO符号化部の出力データの内の何れかに対して、所定数の単位ずつ基本帯域間で入替を行う基本帯域間入替部、
を更に有する、
ことを特徴とする請求項1または4に記載の送信装置。 - 前記基本帯域の数をK(Kは2以上の自然数)、送信アンテナの数をM(Mは2以上の自然数)とすると、
K個の出力ポートを有し、各出力ポートは各基本帯域に対応し、前記所定長のデータブロック毎に前記K個の出力ポートに振り分ける直並列(S/P:Serial to Parallel)変換部
を更に有し、
前記基本帯域毎に前記誤り訂正符号化部と前記マッピング部と前記MIMO符号化部と、
を有し、
前記基本帯域毎の前記誤り訂正符号化部は、前記直並列変換部の出力データに対して誤り訂正符号化して誤り訂正符号化フレームを生成し、
前記基本帯域毎の前記MIMO符号化部に設けられるM個の出力ポートそれぞれから出力されるデータに対して並べ替えを行うM個のインターリーブ部と、
前記基本帯域毎の前記誤り訂正符号化部の出力データ、前記マッピング部の出力データ、前記MIMO符号化部の出力データ、および前記インターリーブ部の出力データの内の何れかに対して、所定数の単位ずつ基本帯域間で入替を行う基本帯域間入替部と、
を更に有する、
ことを特徴とする請求項1または4に記載の送信装置。 - 前記基本帯域毎の前記MIMO符号化部は、M行M列のプリコーディング行列を用いてMIMO符号化を行う
ことを特徴とする請求項10または11に記載の送信装置。 - 前記MIMO符号化部は、前記基本帯域毎に少なくとも1つのアンテナから送信される信号の位相を規則的に変更する位相変更部を備える
ことを特徴とする請求項1または4に記載の送信装置。 - 前記MIMO符号化部において、前記基本帯域毎に異なるMIMO符号化を行う、
前記MIMO符号化部において、前記基本帯域毎に異なるM行M列のプリコーディング行列を用いてMIMO符号化を行う、
前記MIMO符号化部において、前記基本帯域毎に信号の位相を規則的に変更し、前記位相変更を前記基本帯域毎に異ならせる、
前記マッピング部において、前記基本帯域毎に異なるパターンのマッピングを行う、
前記誤り訂正符号化部において、前記基本帯域毎に異なるパターンの誤り訂正符号化を行う、
ことの内少なくとも1つを行う、
ことを特徴とする請求項7または8または10記載の送信装置。 - 前記インターリーブ部において、前記基本帯域毎に異なるパターンの並び替えを行う、
前記MIMO符号化部において、前記基本帯域毎に異なるMIMO符号化を行う、
前記MIMO符号化部において、前記基本帯域毎に異なるM行M列のプリコーディング行列を用いてMIMO符号化を行う、
前記MIMO符号化部において、前記基本帯域毎に信号の位相を規則的に変更し、前記位相変更を前記基本帯域毎に異ならせる、
前記マッピング部において、前記基本帯域毎に異なるパターンのマッピングを行う、
前記誤り訂正符号化部において、前記基本帯域毎に異なるパターンの誤り訂正符号化を行う、
ことの内少なくとも1つを行う、
ことを特徴とする請求項11記載の送信装置。 - 前記インターリーブ部は、前記基本帯域毎に異なるパターンの並べ替えを行い、且つ前記基本帯域内のM個のインターリーブ部が同じパターンの並べ替えを行う
ことを特徴とする請求項11に記載の送信装置。 - 複数の基本帯域を用いたMIMO(Multiple Input Multiple Output)伝送により、誤り訂正符号化ブロック中に含まれるデータの成分を、前記複数の基本帯域の内の2以上の基本帯域に振り分けて送信された信号を受信する受信装置であって、
前記基本帯域毎に復調を行う復調部と、
復調されたデータに対してMIMOデマッピングを行うMIMOデマッピング部と、
MIMOデマッピングの出力に対して誤り訂正復号を行う誤り訂正復号化部と、
を有する
ことを特徴とする受信装置。 - 複数の基本帯域を用いたMIMO(Multiple Input Multiple Output)伝送を行う送信方法であって、
所定長のデータブロック毎に、誤り訂正符号化して誤り訂正符号化フレームを生成する誤り訂正符号化ステップと、
前記誤り訂正符号化フレームを所定数のビットずつシンボルにマッピングして誤り訂正符号化ブロックを生成するマッピングステップと、
前記誤り訂正符号化ブロックに対してMIMO符号化を行うMIMO符号化ステップと、
を含み、
前記誤り訂正符号化ブロック中に含まれるデータの成分を、前記複数の基本帯域の内の2以上の基本帯域に振り分けて送信を行う
ことを特徴とする送信方法。 - 複数の基本帯域を用いたMIMO(Multiple Input Multiple Output)伝送により、誤り訂正符号化ブロック中に含まれるデータの成分を、前記複数の基本帯域の内の2以上の基本帯域に振り分けて送信された信号を受信する受信方法であって、
前記基本帯域毎に復調を行う復調ステップと、
復調されたデータに対してMIMOデマッピングを行うMIMOデマッピングステップと、
MIMOデマッピングの出力に対して誤り訂正復号を行う誤り訂正復号化ステップと、
を含む
ことを特徴とする受信方法。 - MIMO(Multiple Input Multiple Output)での通信を実行する機能を有する送信装置であって、
送信データに対して誤り訂正符号化する誤り訂正符号化部と、
前記誤り訂正符号化されたデータを所定数のビットずつ変調シンボルにマッピングしてマッピングデータを生成するマッピング部と、
前記マッピングデータに対してMIMO符号化を行うMIMO符号化部と、
伝送パラメータを含んだ制御情報を生成する制御情報生成部と、
前記MIMO符号化部から出力されるMIMO符号化データと、前記制御情報を、同一OFDMシンボル内に混在させて送信フレームを構成するフレーム構成部と、
前記送信フレームに対して、OFDM(Orthogonal Frequency Division Multiplexing)方式を適用するOFDM信号生成部と、
を有し、
前記制御情報に対してはMIMO符号化を行わず、複数の送信アンテナから同一内容として送信を行うか、または1つの送信アンテナからのみ送信を行う
ことを特徴とする送信装置。 - 前記MIMOに用いる送信アンテナの数をM(Mは2以上の自然数)とすると、
前記MIMO符号化部はM個の出力ポートを有し、各出力ポートは各送信アンテナに対応し、
前記M個の出力ポートからのデータそれぞれに対して並べ替えを行うM個のインターリーブ部
を更に有する
ことを特徴とする請求項20に記載の送信装置。 - 前記M個のインターリーブ部が同じパターンの並べ替えを行う
ことを特徴とする請求項21に記載の送信装置。 - 前記MIMOに用いる送信アンテナ数を2とし、前記各送信アンテナの偏波極性が異なる
ことを特徴とする請求項20に記載の送信装置。 - 前記マッピングデータに含まれるデータの成分を、全ての送信アンテナに振り分けて送信を行う
ことを特徴とする請求項20に記載の送信装置。 - 送信アンテナの数をM(Mは2以上の自然数)とすると、
前記MIMO符号化部はM個の出力ポートを有し、各出力ポートは各送信アンテナに対応し、前記マッピングデータに含まれる各データの成分を前記M個の全ての出力ポートに出力する
ことを特徴とする請求項20または24に記載の送信装置。 - 前記MIMO符号化部は、M行M列のプリコーディング行列を用いてMIMO符号化を行う
ことを特徴とする請求項25に記載の送信装置。 - 前記MIMO符号化部は、少なくとも1つのアンテナから送信される信号の位相を規則的に変更する位相変更部を備える
ことを特徴とする請求項20または24に記載の送信装置。 - 送信データをL個(Lは2以上の自然数)の階層に分割する階層分割部
を更に有し、
前記階層毎に前記MIMO符号化部
を有し、
送信帯域をQ個(Qは2以上の自然数)のセグメントに分割し、前記各階層の前記MIMO符号化データをいずれかのセグメントに割り当てるセグメント分割部
を更に有し、
前記フレーム構成部は、前記セグメント分割部から出力されるデータと、前記制御情報を、同一セグメント内に混在させて送信フレームを構成する
ことを特徴とする請求項20に記載の送信装置。 - SISO(Single Input Single Output)での通信を実行する機能
を更に有し、
送信データをL個(Lは2以上の自然数)の階層に分割する階層分割部
を更に有し、
前記階層毎に前記マッピングデータに対してMIMOまたはSISO符号化を行うMIMO/SISO符号化部
を有し、
送信帯域をQ個(Qは2以上の自然数)のセグメントに分割し、前記各階層の前記MIMOまたはSISO符号化データを異なるセグメントに割り当てるセグメント分割部
を更に有し、
前記フレーム構成部は、前記セグメント分割部から出力されるデータと、前記制御情報を、同一セグメント内に混在させて送信フレームを構成する
ことを特徴とする請求項20に記載の送信装置。 - 前記階層分割部は、送信データの基本情報と拡張情報を別の階層に分割し、
前記基本情報が割り当てられた階層のMIMO/SISO符号化部は、SISO符号化を行い、
前記拡張情報が割り当てられた階層のMIMO/SISO符号化部は、MIMO符号化を行い、
前記基本情報は単独で復号可能な情報であり、
前記拡張情報は前記基本情報と組み合わせて復号可能な情報である
ことを特徴とする請求項29に記載の送信装置。 - 前記制御情報生成部は、階層毎にMIMOまたはSISOを示す制御情報を生成する
ことを特徴とする請求項29に記載の送信装置。 - 前記MIMO符号化データが割り当てられたセグメントと、前記SISO符号化データが割り当てられたセグメントとに対して適用するパイロット信号パターンを異ならせて生成するパイロット信号生成部
を更に有する
ことを特徴とする請求項29に記載の送信装置。 - 前記パイロット信号生成部は、前記MIMO符号化データが割り当てられたセグメントの最も周波数が低いサブキャリアに対して、1つの送信アンテナのみにCP(Continual Pilot)信号を配置し、残り全ての送信アンテナにヌル信号を配置する
ことを特徴とする請求項32に記載の送信装置。 - 前記送信データの少なくとも一部を、他の階層とは異なる誤り訂正符号化を行う階層に割り当て、タイミング情報を生成して、割り当てたデータとともに出力する異訂正符号化階層割当部
を更に有し、
前記誤り訂正符号化部は前記異訂正符号化階層割当部の出力データを集めるとともに、前記タイミング情報をヘッダに格納して情報ビットとし、誤り訂正符号化する
ことを特徴とする請求項28または29に記載の送信装置。 - 前記フレーム構成部は、前記制御情報のサブキャリア配置パターンが全てのセグメントで同一とする
ことを特徴とする請求項28または29に記載の送信装置。 - MIMO(Multiple Input Multiple Output)での通信を実行する機能を有する受信装置であって、
MIMO符号化データと伝送パラメータを含んだ制御情報が同一OFDMシンボル内に混在する送信フレームを受信する受信部と、
前記制御情報を復号し、伝送パラメータを取得する制御情報復号部と、
前記伝送パラメータに基づき、MIMO符号化データを復調する送信データ復調部と、
を有し、
前記制御情報に対してはMIMO符号化が行われず、複数の送信アンテナから同一内容として送信が行われるか、または1つの送信アンテナからのみ送信が行われる
ことを特徴とする受信装置。 - MIMO(Multiple Input Multiple Output)での通信を実行する機能を有する送信装置における送信方法であって、
送信データに対して誤り訂正符号化する誤り訂正符号化ステップと、
前記誤り訂正符号化されたデータを所定数のビットずつ変調シンボルにマッピングしてマッピングデータを生成するマッピングステップと、
前記マッピングデータに対してMIMO符号化を行うMIMO符号化ステップと、
伝送パラメータを含んだ制御情報を生成する制御情報生成ステップと、
前記MIMO符号化ステップで生成されたMIMO符号化データと、前記制御情報を、同一OFDMシンボル内に混在させて送信フレームを構成するフレーム構成ステップと、
前記送信フレームに対して、OFDM(Orthogonal Frequency Division Multiplexing)方式を適用するOFDM信号生成ステップと、
を含み、
前記制御情報に対してはMIMO符号化を行わず、複数の送信アンテナから同一内容として送信を行うか、または1つの送信アンテナからのみ送信を行う
ことを特徴とする送信方法。 - MIMO(Multiple Input Multiple Output)での通信を実行する機能を有する受信装置における受信方法であって、
MIMO符号化データと前記制御情報が同一OFDMシンボル内に混在する送信フレームを受信する受信ステップと、
前記制御情報を復号し、伝送パラメータを取得する制御情報復号ステップと、
前記伝送パラメータに基づき、MIMO符号化データを復調する送信データ復調ステップと、
を含み、
前記制御情報に対してはMIMO符号化が行われず、複数の送信アンテナから同一内容として送信が行われるか、または1つの送信アンテナからのみ送信が行われる
ことを特徴とする受信方法。
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US20200266923A1 (en) | 2020-08-20 |
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US9258083B2 (en) | 2016-02-09 |
US20150003544A1 (en) | 2015-01-01 |
US20160119081A1 (en) | 2016-04-28 |
US10666385B2 (en) | 2020-05-26 |
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