JP2009081821A - Transmitter, receiver, and transmitting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent degradation of transmission characteristics by arranging signal points most suitably for each error correction code. <P>SOLUTION: An LDPC (Low Density Parity Check) coding section 11-1 carries out error correction coding by using an LDPC code such that its coding rate is a specific value such as 27/40. The LDPC code is subjected to, e.g., 16 APSK modulation or 32 APSK modulation and transmitted. The signal points of the 16 and 32 APSK modulation are arranged in positions most suitable for the LDPC code of each coding rate. The invention can be applied to, e.g., a BS digital broadcast system. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transmission device, a reception device, and a transmission method, and more particularly to, for example, a transmission device, a reception device, and a transmission method that perform optimal signal point arrangement for each error correction code.

  In 1962, Gallagher proposed an LDPC (Low Density Parity Check) code (see, for example, Non-Patent Document 1), which has recently been put into practical use as one of the powerful error correction codes with performance approaching the Shannon limit. It is coming.

  The LDPC code is a linear code defined by a very sparse check matrix H (the elements of the check matrix are 0 and 1 and the number of 1 is very small). The code word C of the LDPC code can be generated according to Expression (1) that multiplies the information vector m and the generator matrix G.

・・・（１）

... (1)

Here, the generator matrix G is a non-zero matrix in which the relationship of Expression (2) is established with the transposed matrix H ^T of the check matrix H.

・・・（２）

... (2)

  By preparing a very sparse check matrix H in advance, obtaining a generator matrix G from Equation (2), and using Equation (1), it is possible to obtain an LDPC encoded codeword. LDPC codes are classified into regular LDPC codes in which row weights and column weights in parity check matrix H are constant, and non-regular LDPC codes that are not constant. Various methods have been proposed for constructing the parity check matrix used in LDPC codes. Regular LDPC codes with column weight 3 have good decoding performance, and irregular LDPC codes with optimized row and column weights are regular LDPCs. It has been reported that decoding performance is better than that of codes (see Non-Patent Document 2, for example).

  Here, FIG. 1 shows an example of a parity check matrix of a regular LDPC code having a row weight of 4 and a column weight of 3.

  LDGM (Low Density Generation Matrix) structure that enables codeword c to be obtained directly from the check matrix by making the submatrix corresponding to the parity length of the parity of codeword c in check matrix H into a lower triangular structure. Has been proposed (see, for example, Non-Patent Document 3).

  LDPC code is a powerful error correction code that can obtain transmission characteristics approaching the Shannon limit by increasing the code length and using an appropriate check matrix H, and is a standard for digital data transmission systems that transmit (transmit) digital data. For example, in the European DVB-S2 (Digital Video Broadcasting S2) standard, an LDPC code is employed.

  Also, in the DVB-S2 standard, when ideal error correction coding is performed, the required communication capacity (bit rate per 1 Hz) is achieved with the lowest C / N (Carrier to Noise Ratio). In addition, the arrangement of signal points for digital modulation is designed (see Non-Patent Document 4).

R. G. Gallager, “Low-Density Parity-Check Codes,” in Research Monograph series Cambridge, MIT Press, December 1963 D. J. C. MacKay, “Good error-correcting codes based on very sparse matrices,” IEEE Trans. Inform. Theory, vol.45, 1999, p.399−431 M. Rashidpour and S. H. Jamali, “Low-Density Parity-Check codes with Simple Irregular Semi-Random Parity Check Matrix for Finite-Length Applications,” IEEE PIMRC 2003, Proc., September 2003, p.439-443 Riccardo De Gaudenzi et.al., “Turbo-coded APSK modulations design for satellite broadband communications”, International Journal of Satellite Communications and Networking. 2006; 24: pp.261-281

  When the arrangement of signal points is determined as described in Non-Patent Document 4, the signal points are not optimally arranged for an error correction code that is actually used, and transmission characteristics deteriorate. May occur.

  The present invention has been made in view of such a situation, and performs an optimal signal point arrangement for each error correction code, thereby preventing deterioration of transmission characteristics. is there.

  A transmission apparatus or transmission method according to the first aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data. Error correction coding means or step for performing error correction coding with a code having a rate of 73/120, and the signal points of the 16APSK modulation are 4 signal points on the inner circle and 12 points on the outer circle The radius of the outer circumference circle is 2.87 times the radius of the inner circumference circle.

  Note that the radius ratio here means that a value as close to this value as possible is used. For example, a modulator included in an actual transmission apparatus is mapped and modulated to signal point coordinates based on these optimum radius ratios. However, when the D / A converter used for mapping is, for example, 10-bit precision The signal point is mapped within a range of an amplitude value that can be expressed by binary 10 bits, and becomes a value including an error in quantization accuracy at that time. Further, in a demodulator included in an actual receiving apparatus, maximum likelihood decoding is performed based on these optimal radius ratios. However, when the table used for likelihood calculation has, for example, an accuracy of 10 bits, a signal point is Likelihood calculation is performed within the range of the amplitude value that can be expressed by binary 10 bits, and the likelihood at that time is a value including an error caused by quantization accuracy. (The same applies hereinafter).

  In the first aspect of the present invention, there are four signal points on the inner circle whose radius is 2.87 times the radius of the inner circle, and 12 points on the outer circle. A code having a coding rate of 73/120 is arranged at any one of the signal points.

  A transmission apparatus or transmission method according to a second aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code and performs 16APSK modulation to perform digital data transmission, and includes a coding rate. Error correction coding means or step for performing error correction coding using a 27/40 code, and the 16 APSK modulation signal points include four signal points on the inner circle and twelve points on the outer circle. It is a signal point, and the radius of the outer circumference circle is 2.92 times the radius of the inner circumference circle.

  In the second aspect of the present invention, there are four signal points on the inner circle where the radius of the outer circle is 2.92 times the radius of the inner circle, and 12 points on the outer circle. A code having a coding rate of 27/40 is arranged at any one of the signal points.

  A transmission apparatus or transmission method according to a third aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data, and includes a coding rate. Error correction coding means or step for performing error correction coding using a code of 89/120, and the signal points of the 16APSK modulation are four signal points on the inner circle and twelve points on the outer circle. It is a signal point, and the radius of the outer circumference circle is 2.97 times the radius of the inner circumference circle.

  In the third aspect of the present invention, there are four signal points on the inner circle whose radius is 2.97 times the radius of the inner circle, and 12 points on the outer circle. A code having a coding rate of 89/120 is arranged at any of the signal points.

  A transmission apparatus or transmission method according to a fourth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data, and has a coding rate. Error correction coding means or step for performing error correction coding with a code of 97/120, and the signal points of the 16APSK modulation are four signal points on the inner circle and twelve points on the outer circle. It is a signal point, and the radius of the outer circumference circle is 2.73 times the radius of the inner circumference circle.

  In the fourth aspect of the present invention, there are four signal points on the inner circle where the radius of the outer circle is 2.73 times the radius of the inner circle, and 12 points on the outer circle. A code having a coding rate of 97/120 is arranged at any one of the signal points.

  A transmission apparatus or transmission method according to a fifth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data, and has a coding rate. Error correction coding means or step for performing error correction coding with a code of 101/120, and the 16 APSK modulation signal points include four signal points on the inner circle and twelve points on the outer circle. It is a signal point, and the radius of the outer circumference circle is 2.67 times the radius of the inner circumference circle.

  In the fifth aspect of the present invention, there are four signal points on the inner circle whose radius is 2.67 times the radius of the inner circle and 12 points on the outer circle. A code having a coding rate of 101/120 is arranged at any one of the signal points.

  A transmission apparatus or transmission method according to a sixth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data, and includes a coding rate. Error correction coding means or step for performing error correction coding using a 7/8 code, and the signal points of the 16APSK modulation are 4 signal points on the inner circle and 12 signal points on the outer circle. It is a signal point, and the radius of the outer circumference circle is 2.76 times the radius of the inner circumference circle.

  In the sixth aspect of the present invention, the radius of the outer circumference circle is 4 signal points on the inner circumference circle that is 2.76 times the radius of the inner circumference circle, and 12 points on the outer circumference circle. A code having a coding rate of 7/8 is arranged at any one of the signal points.

  A transmission apparatus or transmission method according to a seventh aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data, and has a coding rate. Error correction coding means or step for performing error correction coding with a code of 109/120, and the signal points of the 16APSK modulation are four signal points on the inner circle and twelve points on the outer circle. It is a signal point, and the radius of the outer circumference circle is 2.69 times the radius of the inner circumference circle.

  In the seventh aspect of the present invention, there are four signal points on the inner circle where the radius of the outer circle is 2.69 times the radius of the inner circle, and 12 points on the outer circle. A code having a coding rate of 109/120 is arranged at any one of the signal points.

  A transmission apparatus or transmission method according to an eighth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data. Comprises error correction coding means or step for performing error correction coding with a 27/40 code, and the signal points of the 32APSK modulation are the four signal points on the first inner circle, the first inner circle 12 signal points on the second inner circle having a larger radius than the above, and 16 signal points on the outer circle, and the radius of the second inner circle is the radius of the first inner circle The radius of the outer circumference circle is 5.68 times the radius of the first inner circumference circle.

  In an eighth aspect of the present invention, the radius of the second inner circumference circle is 2.92 times the radius of the first inner circumference circle, and the radius of the outer circumference circle is the first inner circumference circle. Of the four signal points on the first inner circle, which are 5.68 times the radius of the circle, the 12 signal points on the second inner circle, and the 16 signal points on the outer circle A code having a coding rate of 27/40 is placed in any of the above.

  A transmission apparatus or transmission method according to a ninth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data, and has a coding rate. Comprises error correction coding means or step for performing error correction coding with a code of 89/120, and the signal points of the 32APSK modulation are the four signal points on the first inner circle, the first inner circle 12 signal points on the second inner circle having a larger radius than the above, and 16 signal points on the outer circle, and the radius of the second inner circle is the radius of the first inner circle The radius of the outer circumference circle is 5.57 times the radius of the first inner circumference circle.

  In a ninth aspect of the present invention, the radius of the second inner circumference circle is 2.97 times the radius of the first inner circumference circle, and the radius of the outer circumference circle is the first inner circumference circle. Of the four signal points on the first inner circle, which are 5.57 times the radius of the circle, the 12 signal points on the second inner circle, and the 16 signal points on the outer circle A code having a coding rate of 89/120 is arranged in any of the above.

  A transmitting apparatus or a transmitting method according to a tenth aspect of the present invention is a transmitting apparatus or a transmitting method for performing digital data transmission by performing 32APSK modulation by performing encoding using at least one error correction code, and encoding rate Error correction coding means or step for performing error correction coding with a code of 97/120, the signal points of the 32APSK modulation are four signal points on the first inner circle, the first inner circle 12 signal points on the second inner circle having a larger radius than the above, and 16 signal points on the outer circle, and the radius of the second inner circle is the radius of the first inner circle The radius of the outer circumference circle is 5.05 times the radius of the first inner circumference circle.

  In a tenth aspect of the present invention, the radius of the second inner circumference circle is 2.73 times the radius of the first inner circumference circle, and the radius of the outer circumference circle is the first inner circumference circle. Of the four signal points on the first inner circle, which is 5.05 times the radius of the circle, the 12 signal points on the second inner circle, and the 16 signal points on the outer circle A code having a coding rate of 97/120 is placed in any of the above.

  A transmission apparatus or transmission method according to an eleventh aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data, and has a coding rate. Comprises error correction coding means or steps for performing error correction coding with a code of 101/120, and the signal points of the 32APSK modulation are four signal points on the first inner circle, the first inner circle 12 signal points on the second inner circle having a larger radius than the above, and 16 signal points on the outer circle, and the radius of the second inner circle is the radius of the first inner circle The radius of the outer circumference circle is 4.80 times the radius of the first inner circumference circle.

  In an eleventh aspect of the present invention, the radius of the second inner circumference circle is 2.67 times the radius of the first inner circumference circle, and the radius of the outer circumference circle is the first inner circumference circle. Of the four signal points on the first inner circle, which are 4.80 times the radius of the circle, the 12 signal points on the second inner circle, and the 16 signal points on the outer circle In any of the cases, a code having a coding rate of 101/120 is arranged.

  A transmission apparatus or transmission method according to a twelfth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data, and has a coding rate. Is provided with error correction coding means or step for performing error correction coding with a code of 7/8, and the signal points of the 32APSK modulation are four signal points on the first inner circle, the first inner circle 12 signal points on the second inner circle having a larger radius than the above, and 16 signal points on the outer circle, and the radius of the second inner circle is the radius of the first inner circle The radius of the outer circumference circle is 4.82 times the radius of the first inner circumference circle.

  In a twelfth aspect of the present invention, the radius of the second inner circumference circle is 2.76 times the radius of the first inner circumference circle, and the radius of the outer circumference circle is the first inner circumference circle. Of the four signal points on the first inner circle, which is 4.82 times the radius of the circle, the 12 signal points on the second inner circle, and the 16 signal points on the outer circle In any of the cases, a code having a coding rate of 7/8 is arranged.

  A transmission apparatus or transmission method according to a thirteenth aspect of the present invention is a transmission apparatus or transmission method that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data. Comprises error correction coding means or step for performing error correction coding with a code of 109/120, and the signal points of the 32APSK modulation are four signal points on the first inner circle, the first inner circle 12 signal points on the second inner circle having a larger radius than the above, and 16 signal points on the outer circle, and the radius of the second inner circle is the radius of the first inner circle The radius of the outer circumferential circle is 4.66 times the radius of the first inner circumferential circle.

  In a thirteenth aspect of the present invention, the radius of the second inner circumference circle is 2.69 times the radius of the first inner circumference circle, and the radius of the outer circumference circle is the first inner circumference circle. Of the four signal points on the first inner circle, which is 4.66 times the radius of the circle, the 12 signal points on the second inner circle, and the 16 signal points on the outer circle A code having a coding rate of 109/120 is arranged in any of the above.

  The receiver according to the fourteenth aspect of the present invention is characterized in that it receives data transmitted by the transmitter according to the first to eleventh aspects based on the arrangement of the signal points.

  In the fourteenth aspect of the present invention, data transmitted by the transmission device according to the first to eleventh aspects is received based on the arrangement of the signal points.

  The receiving device according to the fifteenth aspect of the present invention is characterized in that the data transmitted by the transmitting device according to the first to eleventh aspects is decoded based on the arrangement of the signal points and the check matrix.

  In the fifteenth aspect of the present invention, data transmitted by the transmission devices of the first to eleventh aspects is decoded based on the arrangement of the signal points and the check matrix.

  According to the first to thirteenth aspects of the present invention, optimal signal point arrangement is performed for each error correction code.

  According to the fourteenth and fifteenth aspects of the present invention, it is possible to receive a code arranged at an optimal signal point.

  Hereinafter, an embodiment of a transmission apparatus and a reception apparatus constituting a digital transmission system to which the present invention is applied will be described with reference to the drawings.

  FIG. 2 is a diagram illustrating a configuration example of a multiplex frame used in a digital data transmission system applied to, for example, a BS digital broadcasting system.

  The transmission apparatus 1 (FIG. 3) of the digital data transmission system designates a transmission method and a coding rate by using the multiple frame configuration shown in FIG. Then, the receiver 2 (FIG. 5) of the digital data transmission system performs demodulation and decoding of the error correction code based on this frame configuration.

  In this multi-frame configuration, the slot is configured by control information, data, outer code parity, stuff bit, and inner code parity, and its length is Sl bits, and the number of slots constituting one frame is N. In addition to the slot, it also has synchronization, pilot, TMCC (Transmission Multiplexing Configuration Control) and its error correction parity, its length is Sy bit, Pl bit and T bit, respectively, slot # 1 to # N / E are assigned bit numbers of Sy × N / E, Pl × N / E, and T × N / E, respectively.

  Here, the stuff bit is a bit that is inserted only when necessary to facilitate processing in byte units. For this reason, it is not inserted when it is not necessary to facilitate processing in byte units. For example, it is assumed that the number of bits that can be secured as control information is 182 bits, and the data is followed by X bytes. In this case, since the control information is 182 bits = 22 bytes and 16 bits, when trying to process on a byte unit basis, the subsequent byte unit data is purposely shifted by 2 bits and connected to the last 6 bits of the control information. Therefore, the receiving apparatus 2 needs to restore this connection and restore the original data in bytes. In such a case, out of the number of bits that can be used for the control information, it is more advantageous in terms of hardware to use 6 stuff bits that are not used for information transmission.

  The multi-frame configuration in FIG. 2 also includes inner code parity. For this reason, the rule for inserting a dummy slot needs to consider only the frequency utilization efficiency of the digital modulation scheme (hereinafter also simply referred to as modulation scheme) itself.

  Also, unlike the known multiple frame configuration, as will be described later, the number of dummy slots assigned to the modulation scheme to be used is determined without depending on the coding rate. Note that information for controlling transmission (hereinafter also referred to as transmission control information) is written in the TMCC signal, and has a value corresponding to the transmission mode for specifying the transmission mode for each slot. The transmission mode here can be specified as a combination of a modulation method and an inner code coding rate.

  In FIG. 2, N indicates the number of slots per frame. As the actual value of N, in ISDB-S (Satellite Integrated Services. Digital Broadcasting), the bit rate per slot is about 1.1 Mbps, so it is desirable to satisfy this condition.

  Therefore, among the modulation schemes used in the digital data transmission system, the modulation scheme having the maximum efficiency is 8PSK (Phase Shift Keying) (3 bps / Hz), 16 APSK (Amplitude Phase Shift Keying) (or 16 QAM (Quadrature Amplitude Modulation), 4 bps. / Hz) and 32APSK (or 32QAM, 5 bps / Hz), respectively, the transmission efficiency is 1.5 times, 2 times and 2 times that of ISDB-S TC8PSK (r: 2/3, 2 bps / Hz). Therefore, it is desirable that the number of slots N is 48 slots × 1.5 = 72 slots, 48 slots × 2 = 96 slots, and 48 slots × 2.5 = 120 slots, respectively.

  The reason why the dummy (Dummy) area is provided under the area of synchronization, pilot, TMCC and its error correction parity is as follows. This is because, in general, a low-efficiency modulation scheme is often employed, and an extra modulation symbol is occupied accordingly, so that this time region is secured. Since the dummy area is virtual and data in this area is not actually transmitted, there is no need to equip a corresponding memory area. Further, the value of E that defines the amount of dummy is the ratio of the frequency utilization efficiency of the modulation scheme that transmits these signals to the frequency utilization efficiency of the modulation scheme having the maximum efficiency in the modulation scheme group to be employed. For example, when the modulation scheme having the maximum efficiency is 32APSK (or 32QAM, 5 bps / Hz) and the modulation scheme for transmitting these signals is BPSK (1 bps / Hz), the value of E is 5 Similarly, if the modulation scheme having the maximum efficiency is 16 APSK (or 16 QAM, 4 bps / Hz) and the modulation scheme for transmitting these signals is BPSK (1 bps / Hz), the value of E is used. Becomes 4.

  The slot length Sl depends on the code length (code length). In recent years, in the standardized DVB-S2 system, LDPC codes having a code length of 64800 bits are used, and it is assumed that codes of this class will become mainstream in the future. For this reason, it is desirable that the slot length Sl be approximately the same as the code length (condition 1).

  Also, MPEG-2TS (packet length 188 bytes, excluding the first 1 byte synchronization code, 187 bytes = 1496 bits) will continue to be the mainstream of digital broadcasting. It is desirable to be able to transmit without any condition (condition 2).

  In addition, in order to transmit one slot of data with a plurality of modulation schemes without excess or deficiency, it is necessary to be the least common multiple of the number of bits per modulation symbol of each modulation scheme. For example, the modulation schemes employed in the transmission system are BPSK (1 bit / symbol), QPSK (2 bits / symbol), 8PSK (3 bits / symbol), 16APSK (or 16QAM, 4 bits / symbol) and 32APSK (or 32QAM, 5 bits / symbol), the least common multiple is 2 × 2 × 3 × 5 = 60 bits, and the slot length Sl needs to be an integral multiple of this. If the slot length needs to be in bytes, it must be a multiple of 8, and in that case, it must be an integral multiple of the least common multiple 120 of 60 and 8 (condition 3).

  In addition, when a periodic LDPC code as used in DVB-S2 is used as an inner code, the period Mt needs to be around 360 for ease of code creation. In addition, since Mt is a factor of 187 bytes of data unit to be transmitted = 23 × 11 × 17 bits, data and LDPC parity can be allocated flexibly, so this condition is satisfied, and Mt = 374 Thus, it is desirable that the slot length Sl be an integral multiple of 374 = 2 × 11 × 17 (condition 4).

In order to satisfy the above conditions 2, 3 and 4, when it is not necessary to process in units of bytes, the slot length is LCM (374, 60) = LCM (2 × 11 × 17, 2 × 2 × 3 × 5) = 2 × 2 × 3 × 5 × 11 × 17 = 11220 bits may be an integral multiple (LCM: least common multiple). Furthermore, in order to satisfy the condition 1, it is only necessary to set 11220 × 5 = 56100 and 11220 × 6 = 67320 as numbers similar to 64800. However, since the latter exceeds 2 ¹⁶ −1 = 65535 that can be expressed by 16 bits, there is a possibility that the scale of hardware may increase rapidly, which is not desirable. Therefore, it is desirable that the slot length Sl is 56100 bits. In addition, in order to flexibly allocate LDPC parity as data, the sum of the number of bits of control information, outer code parity, and stuff bits (the sum of the number of bits of control information and outer code parity when stuff bits are not used) , The same shall apply hereinafter) must be an integral multiple of the LDPC cycle Mt (= 374). If the unit of data to be transmitted is not 187 bytes, for example, 188 bytes, 189 bytes, 190 bytes, and 192 bytes, the LDPC cycle Mt is 376, 378, 380, and 384 and the slot lengths at this time are 62040, 60480, 63840, and 65280, respectively.

  Further, when it is necessary to process in units of bytes, the slot length is LCM (374, 120) = LCM (2 × 11 × 17, 2 × 2 × 2 × 3 × 5) = 2 × 2 × 2 × 3 × What is necessary is just to make it an integral multiple of 5x11x17 = 22440. Further, there are 22440 × 2 = 44880 and 22440 × 3 = 67320 as numbers similar to 64800 in Condition 1, but the latter is not desirable for the same reason. Therefore, it is desirable that the slot length Sl be 44880. In order to flexibly allocate data and LDPC parity, the sum of the number of control information, outer code parity, and stuff bits needs to be an integral multiple of the LDPC cycle Mt (= 374).

  In the following, a description will be given of the transmission apparatus 1 and the reception apparatus 2 in the case of handling a multiple frame structure with a slot length Sl of 48880 so that data of one slot can be efficiently processed in units of bytes with a plurality of modulation schemes.

  FIG. 3 is a block diagram illustrating a configuration example of the transmission device 1 of the digital data transmission system.

  The transmission apparatus 1 includes a frame generation unit 10, LDPC encoding units 11-1 and 11-2, BCH encoding units 11-3 and 11-4, energy spreading units 12 and 13, a switch 14, a mapping unit 15, and a time When the division multiplexing / orthogonal modulation unit 16 is provided and a data stream is transmitted, a series of processing from generation of a multiplexed frame signal shown in FIG. 2 to generation of a modulated signal is performed.

  For the slot S1 bit, the frame generation unit 10 controls the control information and data, the outer code parity in which the control information and data are encoded by the BCH encoding unit 11-3, the stuff bit, and the LDPC encoding unit 11- 1 generates a frame composed of slots # 1 to #N composed of control information, data, and inner code parity in which outer code parity and stuff bits are LDPC-coded, and outputs the generated frame to the energy spreading unit 12.

  In addition, for the TMCC signal, the frame generation unit 10 generates a BCH parity by the BCH encoding unit 11-4, and further generates an LDPC parity by the LDPC encoding unit 11-2. The multiplexed frame generated by the frame generation unit 10 has the number of slots N, E that defines the amount of dummy, slot length Sl, synchronization bit length Sy, pilot bit length Pl, TMCC, and parity bit length T as described above. Generated to be a number.

  The BCH encoding units 11-3 and 11-4 are error correction encoding processes provided as necessary as outer codes, and perform BCH encoding on predetermined data.

  The LDPC encoding units 11-1 and 11-2 perform LDPC encoding with a period Mt on predetermined data or BCH encoded data as inner codes.

  The energy spreader 12 receives the slots # 1 to #N generated by the frame generator 10 and performs energy spread (bit randomization) on the entire data. This is realized by generating pseudo-random “1” and “0” patterns using the M-sequence, and adding this with the data in the slot by MOD2. As a result, “1” or “0” does not continue, so that the synchronous playback can be stabilized in the receiving device 2.

  The energy spreading unit 13 receives predetermined control information (information in T bits shown in FIG. 2) of # 1 to # N / E corresponding to each slot generated by the frame generating unit 10, and the energy spreading unit 12 At the same time, energy diffusion (bit randomization) is performed on the entire data.

  The switch 14 switches slots # 1 to #N according to various modulation schemes while appropriately inserting synchronization and pilot signals, and the mapping unit 15 performs mapping according to the modulation scheme designated by TMCC synchronization. The time division multiplexing / orthogonal modulation unit 16 performs time division multiplexing for each frame and performs orthogonal modulation to generate a modulated signal.

  For example, when the modulation scheme of maximum efficiency is 32APSK (or 32QAM), N = 120, E = 5, Sl = 44880, Sy = 120, Pl = 160, T = 1320, the modulation signal is equivalent to one frame. Information is divided into # 1 to # 120 modulation slots and transmitted

  FIG. 4 shows the format of the modulation signal.

  In an odd-numbered modulation slot, first, BPSK-modulated slot synchronization Sync1 (24 symbols) and a pilot signal (32 symbols) corresponding to the modulation scheme of the modulation slot are transmitted. Subsequently, the main signal data (136 symbols) multiplexed with the image, sound, data broadcast, etc., modulated by the modulation method specified by the TMCC signal, and the TMCC signal (4 symbols) modulated with BPSK are alternately displayed. It is transmitted 66 times. In an even-numbered modulation slot, BPSK-modulated slot synchronization Sync2 (24 symbols) or its inverted pattern! Sync2 (24 symbols) and a pilot signal (32 symbols) corresponding to the modulation scheme of the modulation slot are transmitted. Subsequently, the main signal data (136 symbols) multiplexed with the image, sound, data broadcast, etc., modulated by the modulation method specified by the TMCC signal, and the TMCC signal (4 symbols) modulated with BPSK are alternately displayed. It is transmitted 66 times.

  The above sync pattern Sync1, Sync2, and its reverse pattern! Sync2 needs to have a sharp autocorrelation peak itself and low cross-correlation with each other in order to avoid pseudo-synchronization. As such codes, 0x36715a = 001101100111000101011010 as Sync1, 0x52f866 = 010100101111100001100110 as Sync2, and 0xad0799 = 101011010000011110011001 as the bit inversion pattern! Sync2 enables reception with less pseudo synchronization.

  By repeating such processing for 120 modulation slots, the information written in the TMCC signal is transmitted to the receiving device 2 (FIG. 5). By continuously monitoring the information of the TMCC signal, the reception device 2 can switch the reception method and the like following it even if various transmission controls are performed in the transmission device 1.

  In summary, the transmission apparatus 1 includes at least a frame generation unit 10, LDPC encoding units 11-1 and 11-2, BCH encoding units 11-3 and 11-4, energy spreading units 12 and 13, a switch 14, and a mapping unit. 15 and a time division multiplexing / orthogonal modulation unit 16, and transmission control in which multiplexed data having a frame configuration in which a plurality of slots composed of at least data, outer code parity and inner code parity are collected is written in a transmission control signal Transmit based on information. In this case, by setting the slot length to 48880 bits, it is possible to transmit 187-byte information removed from MPEG (Moving Picture Expert Group) -2TS (Transport Stream) without excess or deficiency regardless of the modulation scheme.

  If the unit of data to be transmitted is not 187 bytes, for example, 188 bytes, 189 bytes, 190 bytes, and 192 bytes, the slot lengths at this time are set to 62040, 64260, 64980, and 65280, respectively. Transmission is possible without excess or deficiency regardless of the modulation method. In addition, when the code length is set in units of bytes, the transmission can be performed without excess or deficiency regardless of the modulation method by setting the values to 62040, 60480, 63840, and 65280, respectively.

  FIG. 5 is a block diagram illustrating a configuration example of the receiving device 2 of the digital data transmission system.

  The receiving device 2 includes a channel selection unit 20, an orthogonal detection unit 21, a transmission control signal decoding unit 22, a decoder 23, an energy despreading unit 24, and an outer code decoding unit 25.

  The channel selection unit 20 receives the modulation signal from the transmission device 1, selects a channel of a predetermined frequency band, and converts the signal of the channel into a signal of a predetermined frequency handled by the quadrature detection unit 21. For example, if the modulated signal is a satellite broadcast wave, a 12 GHz band broadcast wave (modulated signal) is received by a BS (Broadcasting Satellite) antenna, and a 1 GHz band BS− is received using a known frequency converter (not shown). Convert to IF (Intermediate Frequency) signal.

  The quadrature detection unit 21 inputs a signal having a predetermined frequency (for example, a BS-IF signal) of the channel selected by the channel selection unit 20 and converts it into a synchronous baseband signal.

  The transmission control signal decoding unit 22 receives the synchronous baseband signal converted by the quadrature detection unit 21, first detects the synchronization byte of the TMCC signal, and uses the BPSK modulated wave that is periodically multiplexed with reference thereto as a reference. The position of a certain phase reference burst signal is also detected. In addition, detection of modulation scheme and error correction information transmitted by the TMCC signal is also performed here. The information decoded by the transmission control signal decoding unit 22 is input to the decoder 23, the energy despreading unit 24, and the outer code decoding unit 25.

  The decoder 23 is configured as an LDPC decoder, and receives the synchronous baseband signal from the quadrature detection unit 21 and the modulation scheme / error correction information detected by the transmission control signal decoding unit 22 and receives 32APSK modulation. The part is subjected to 32APSK decoding, and the 16APSK, 8PSK, QPSK or BPSK modulation part is also decoded accordingly.

  The energy despreading unit 24 adds the same pseudorandom code again with MOD2 in order to restore the process in which the pseudorandom code is added by MOD2 in the energy spreading units 12 and 13 of the transmission apparatus 1, and performs the energy despreading process again. Do.

  The outer code decoding unit 25 performs decoding on, for example, a BCH encoded signal in the outer code encoding units 11-3 and 11-4 of the transmission apparatus 1.

  As described above, the transmission apparatus 1 can cope with an error correction code such as LDPC having a long code length, and can freely combine a modulation scheme and a coding rate. Therefore, it is possible to efficiently transmit MPEG-2TS and other digital data streams.

  Next, the process of the LDPC encoders 11-1 and 11-2 in FIG. 3 will be described.

  The LDPC encoding units 11-1 and 11-2 have a code length N of, for example, 48880 bits and an encoding rate of, for example, 73/120 (hereinafter also referred to as nominal 3/5), 27/40 ( Hereinafter, also referred to as nominal 2/3), 89/120 (hereinafter also referred to as nominal 3/4), 97/120 (hereinafter also referred to as nominal 4/5), 101/120 (hereinafter, nominal 5 / 6), 7/8, or 109/120 (hereinafter also referred to as nominal 9/10) LDPC code (LDPC encoding).

  LDPC encoding units 11-1 and 11-2 perform LDPC encoding according to parity check matrix H of the LDPC code.

The parity check matrix H has an LDGM (Low-Density Generation Matrix) structure, a partial matrix (left partial matrix) H _A corresponding to the information length corresponding to the coding rate of the LDPC code, and a portion corresponding to the parity length matrix by the (right partial _{matrix) H T, H = [H} a | H T] can be represented by (the partial matrix H _a elements to the left of elements, the elements of the partial matrix H _T matrix to the right of the element) Can do.

FIG. 6 shows a submatrix _HA corresponding to the parity length.

The partial matrix H _T is a matrix in which one element having the lower triangular structure shown in FIG. 6 is arranged in a staircase pattern. The row weight of the submatrix H _T is 1 for the first row and 2 for all the remaining rows. The column weight is 1 for the last column and 2 for all the remaining columns.

  FIG. 7 shows a basic structure of parity check matrix H of an LDPC code having a coding rate of 89/120.

  Since the code length N is 44880, the information length N-P is 33286 (= 44880 × 89/120), and the parity length P is 11594 (= 448800−44880 × 89/120).

The partial matrix H _A corresponding to the information length NP of the parity check matrix H is a P × (NP) matrix, and the partial matrix H _T corresponding to the parity length P is a P × P matrix.

  In FIG. 8, the coding rates are 73/120 (nominal 3/5), 27/40 (nominal 2/3), 89/120 (nominal 3/4), 97/120 (nominal 4/5), 101. / 120 (nominal 5/6), 7/8, and 109/120 (nominal 9/10) LDPC codes, respectively, have information length NP and parity length P.

  Note that the code length N is constant at 48880 for all coding rates as described above.

  FIG. 9 illustrates a configuration example of the LDPC encoding unit 11-1 illustrated in FIG.

  Note that the LDPC encoding unit 11-2 in FIG. 3 is configured in the same manner as the LDPC encoding unit 11-1.

  The LDPC encoding unit 11-1 includes an arithmetic / control unit 11a that can be configured with a central processing unit (CPU) and a storage unit 11b that can be configured with a memory or a register.

  The storage unit 11b includes a plurality of parity check matrix initial value tables corresponding to each of the above-described plurality of coding rates, a control program for causing the arithmetic / control unit 11a to function as various units, data necessary for processing, and the like. Stored.

  The calculation / control unit 11a executes a control program, thereby performing an encoding rate determination unit 101, an initial value table reading unit 102, a parity check matrix generation unit 103, an information bit string reading unit 104, an encoded parity calculation unit 105, and a control. It functions as the unit 106.

  The coding rate determination unit 101 reads out the coding rate information included in the transmission control information, determines for each multiplex transmission frame, and determines the coding rate to be encoded.

  The initial value table reading unit 102 reads a parity check matrix initial value table corresponding to the coding rate determined by the coding rate determination unit 101 from the storage unit 11b.

Based on the parity check matrix initial value table read by the initial value table reading unit 102, the parity check matrix generation unit 103 sets 374 elements in the column direction to 1 element of the submatrix _HA corresponding to the information length NP corresponding to the coding rate. A parity check matrix H is generated by arranging in a cycle for each column and stored in the storage unit 11b.

  The information bit string reading unit 104 reads an information bit string having an information length NP from input data.

  The encoded parity calculation unit 105 reads the check matrix H generated by the check matrix generation unit 103 from the storage unit 11b, calculates a parity bit string for the information bit string read by the information bit string reading unit 104 based on a predetermined formula, Generate a word (LDPC code).

  The control unit 106 controls each block constituting the LDPC encoding unit 11-1.

  FIG. 10 is a flowchart showing a processing procedure of the LDPC encoding unit 11-1 in FIG.

  In step S101, the coding rate determination unit 101 determines (sets) a predetermined coding rate. For example, it is determined to perform LDPC encoding using a parity check matrix H having an encoding rate of 89/120 (nominal 3/4).

  Here, the determination of the coding rate in step S101 is performed, for example, according to a command from the operator of the transmission apparatus 1 or the like.

  In step S102, a predetermined parity check matrix initial value table corresponding to the coding rate determined in step S101 is read from the storage unit 11b by the initial value table reading unit 102.

  In step S103, the parity check matrix generation unit 103 uses the parity check matrix initial value table read from the storage unit 11b by the initial value table reading unit 102, and the LDPC having a predetermined coding rate determined by the coding rate determination unit 101. A code check matrix H is obtained (generated), supplied to the storage unit 11b, and stored.

  In step S104, the information bit string reading unit 104 reads out an information bit string having an information length NP corresponding to the predetermined coding rate determined by the coding rate determining unit 101 from the input data, and an encoded parity calculation unit. In step 105, the parity check matrix H obtained in step S103 is read from a predetermined memory area in the storage unit 11b.

  In step S105, the encoded parity calculation unit 105 sequentially calculates the parity bit string of the code word c that satisfies Expression (3).

・・・（３）

... (3)

Here, in Expression (3), c represents a row vector as a code word (LDPC code), and c ^T represents transposition of the row vector c.

  Assuming that a row vector as an information bit string is represented by I and a row vector as a parity bit string is represented by Z, the row vector c is expressed by c = [I | Z] by the information bit string I and the parity bit string Z. (The row vector having the element of the row vector I as the left element and the element of the row vector Z as the right element).

Since the partial matrix H _T corresponding to the parity length of the parity check matrix H is a step-like matrix, as shown in FIG. 6, the transpose c ^T of the parity check matrix H and the row vector c in Equation (3) The elements of the row vector Z as a parity bit string in which each row of the column vector that is the product of 0 is set to 0 (that is, satisfies the expression (3)) can be sequentially calculated.

  When the encoded parity calculation unit 105 obtains the parity bit string Z for the information bit string I, the encoded bit string I of the information bit string I is represented by the code word c = [I | Z] represented by the information bit string I and the parity bit string Z. Output as LDPC encoding result. The code word c is 44880 bits for one slot.

  Thereafter, in step S106, the control unit 106 determines whether or not to end LDPC encoding. If it is determined in step S106 that the LDPC encoding is not finished, that is, for example, if there is still data to be LDPC encoded, the process returns to step S101, and the processes of steps S101 to S106 are repeated thereafter. .

  Also, when it is determined in step S106 that LDPC encoding is to be ended, that is, for example, when there is no data to be LDPC encoded, the LDPC encoding unit 11-1 ends the processing.

  As described above, the LDPC encoding unit 11-1 has a code length N of 44880, and an encoding rate of 73/120 (nominal 3/5), 27/40 (nominal 2/3), 89/120. (Nominal 3/4), 97/120 (Nominal 4/5), 101/120 (Nominal 5/6), 7/8, or 109/120 (Nominal 9/10) LDPC encoding is performed.

  Then, a parity check matrix initial value table corresponding to each coding rate is prepared, and LDPC coding at a predetermined coding rate is performed as shown in FIG. 10 by referring to a parity check matrix corresponding to the predetermined coding rate. This is performed using a check matrix H generated from the initial value table.

The parity check matrix initial value table is one element of the submatrix H _A (FIG. 7) corresponding to the information length NP corresponding to the coding rate of the LDPC code (LDPC code defined by the parity check matrix H) of the parity check matrix H. Is generated for each optimum check matrix H for each coding rate (optimum check matrix H that defines an LDPC code for each coding rate).

  Therefore, according to the parity check matrix initial value table corresponding to each coding rate, an optimal parity check matrix H for performing LDPC coding at that coding rate can be generated.

  FIG. 11 to FIG. 24 show a parity check matrix initial value table for the optimal parity check matrix H at each coding rate.

  That is, FIGS. 11 and 12 show a parity check matrix initial value table with an encoding rate of 73/120 (nominal 3/5), and FIGS. 13 and 14 show an encoding rate of 27/40 (nominal 2 / 15), FIG. 15 and FIG. 16 show the parity check matrix initial value table of 89/120 (nominal 3/4), and FIG. 17 and FIG. , 97/120 (nominal 4/5) parity check matrix initial value table, FIGS. 19 and 20 show the parity check matrix initial value table with coding rate 101/120 (nominal 5/6), FIG. FIG. 22 shows a parity check matrix initial value table with a coding rate of 7/8, and FIGS. 23 and 24 show a parity check matrix initial value table with a coding rate of 109/120 (nominal 9/10), respectively. Show.

  Note that the parity check matrix initial value tables in FIG. 11 to FIG. 24 can be said to represent the parity check matrix H. Such a representation of the parity check matrix H follows the DVB-S2 standard. .

  The parity check matrix generation unit 103 (FIG. 9) obtains the parity check matrix H as follows using the parity check matrix initial value table.

  That is, FIG. 25 illustrates a method for obtaining the parity check matrix H from the parity check matrix initial value table.

  Note that the parity check matrix initial value table in FIG. 25 is a part of the parity check matrix initial value table shown in FIGS. 15 and 16 and having a coding rate of 89/120 (nominal 3/4).

As described above, the parity check matrix initial value table is a table that represents the position of one element of the submatrix H _A (FIG. 7) corresponding to the information length NP corresponding to the coding rate of the LDPC code for each 374 columns. In the i-th row, the row number of the 1 element of the 1 + 374 × (i-1) column of the parity check matrix H (the row number where the row number of the first row of the parity check matrix is 0) is The 1 + 374 × (i−1) -th column is arranged in the number of column weights.

Here, since the partial matrix H _T (FIG. 7) corresponding to the parity length P of the parity check matrix H is determined as shown in FIG. 6, according to the parity check matrix initial value table, _A submatrix H _A (FIG. 7) corresponding to the information length NP is obtained.

  The number k + 1 of rows in the parity check matrix initial value table varies depending on the coding rate. When the coding rate is 89/120, k = 88.

  Note that the relationship of Equation (4) holds between the information length N−P and the number k + 1 of rows in the parity check matrix initial value table.

・・・（４）

... (4)

  In the parity check matrix initial value table with a coding rate of 89/120 (nominal 3/4), as shown in FIGS. 15 and 16, 10 numerical values are arranged from the first line to the 15th line. Three numbers are lined up from the line to the 89th line.

  Therefore, the column weight of the parity check matrix H with a coding rate of 89/120 (nominal 3/4) is 10 from the first column to the 5610 (= 1 + 374 × (16-1) −1) column. From the 5611 (= 1 + 374 × (16-1)) column to the 33286 (= 374 × (k + 1) = NP) column is 3.

  The first row of the parity check matrix initial value table in FIG. 25 (FIGS. 15 and 16) is 1372, 1492, 2242, 2362, 3502, 3622, 6472, 7912, 8362, 10252, which is the parity check matrix. In the first column of H, the elements of the lines whose row numbers are 1372, 1492, 2242, 2362, 3502, 3622, 6472, 7912, 8362, 10252 are 1 (and the other elements are 0) ).

  The second row of the parity check matrix initial value table of FIG. 25 is 3775, 4732, 6682, 7942, 9712, 10162, 10501, 10343, 10852, 11184, which is 375 (= In the (1 + 374 × (2-1))-th column, the row number 3775, 4732, 6682, 7942, 9712, 10162, 10501, 10343, 10852, 11184 indicates that the element is 1.

As described above, the parity check matrix initial value table represents the position of one element of the partial matrix H _A of the parity check matrix H for every 374 columns.

  Columns other than the 1 + 374 × (i-1) -th column of the parity check matrix H, that is, each column from the 2 + 374 × (i-1) -th column to the 374 × i-th column is a parity check matrix initial value table. The 1 element in the 1 + 374 × (i−1) th column determined by is arranged cyclically and shifted downward (downward in the column) according to the parity length P.

  That is, for example, the 2 + 374 × (i-1) column is a cyclic shift of the 1 + 374 × (i-1) column by P / 374 downward, and the following 3 + 374 × (i-1) column is 1 + 374 × (i-1) column cyclically shifted downward by 2 × P / 374 (2 + 374 × (i-1) column The eye is cyclically shifted downward by P / 374).

The numerical value of the i-th row (i-th from the top) and j-th column (j-th from the left) in the parity check matrix initial value table is represented as h _{i, j} and _{j in} the q-th column of the parity check matrix H. If the row number of the first element is represented as H _qj , the row number H of the first element in the q column, which is a column other than the 1 + 374 × (i−1) column of the check matrix H _qj can be obtained by equation (5).

・・・（５）

... (5)

  Here, mod (x, y) means a remainder obtained by dividing x by y. Q in Equation (5) is a value corresponding to the parity length P, and is obtained according to Equation (6).

・・・（６）

... (6)

  When the coding rate is 89/120, since the parity length P is 11594 as shown in FIG. 8, Q = 31 (= 11594/374).

  Here, FIG. 26 shows a list of k and Q when the coding rates are 73/120, 27/40, 89/120, 97/120, 101/120, 7/8, and 109/120, respectively. Show.

  The parity check matrix generation unit 103 (FIG. 9) specifies the row number of the 1 element in the 1 + 374 × (i−1) column of the parity check matrix H by using the parity check matrix initial value table.

Further, the parity check matrix generation unit 103 (FIG. 9) _calculates the row number H _qj of the first element of the qth column, which is a column other than the 1 + 374 × (i−1) th column of the parity check matrix H, by the formula ( 5), a parity check matrix H in which the element of the row number obtained as described above is set to 1 is generated.

  Next, FIG. 27 is a flowchart for explaining a transmission signal generation process of the transmission apparatus 1 of FIG.

  In step S201, the frame generation unit 10 determines a predetermined modulation scheme and coding rate. For example, the determined modulation scheme and coding rate are transmitted to the receiving apparatus 2 (FIG. 5) as TMCC signals as transmission control information including transmission mode information.

In step S202, an information bit string I _i (i = 1 to n) is prepared. Here, the information bit string I _i is a bit string composed of 0 and 1, and the length n of the information bit string I _i varies depending on the coding rate. As an assumed information bit string, an MPEG-TS stream or the like can be cited. In order to further improve the transmission performance, the information bit string I _i is preliminarily determined by another error correction code (not limited to block coding such as BCH coding or Reed-Solomon coding, but may be a convolutional code or another LDPC code). It is also possible to use an encoded signal (step S203). As an example, the case of applying the 12-bit correctable BCH code information bit I _i in the Galois-type GF (2 ^16), the block diagram and BCH generator polynomial list of information bits I _i shown in FIG. 28. In this case, the net information bit sequence is a parity string of _{IBCH i (i = 1~n-192} ) and BCH codes are PBCH _{i (i} = 1~192). Further, since the generator polynomial shown in FIG. 28 has a solution on GF (2 ¹⁶ ), it is possible to perform error correction for the entire information bit string I _i by the correction capability of the BCH code using the generator polynomial of FIG. Become. In addition, the generator polynomial shown in FIG. 28 can be used for all the coding rates that can be used in the LDPC encoding units 11-1 and 11-2.

In step S204, as described above, LDPC encoding is performed on the information bits I _i (i = 1 to n) by the LDPC encoding units 11-1 and 11-2, and the 1-slot code word C _i (i = 1 to 44880).

In step S205, a temporary memory having a two-dimensional structure corresponding to 44880 / M in the horizontal direction and M in the vertical direction is prepared by the switch 14, and the code word C _i (i = 1 to 44880) is stored in the temporary memory from the top. The operation of recording 48880 / M bits in the horizontal direction is performed M times in the vertical direction. Here, M corresponds to the modulation order (the number of bits of one symbol). In the case of phase modulation, M = 2 for QPSK, M = 3 for 8PSK, M = 4 for 16APSK, and M = 5 for 32APSK. After the recording is completed, the operation of reading the recorded codeword C _i (i = 1 to 44880) from the top of the temporary memory in the horizontal direction in the vertical direction is repeated 48880 / M times in the horizontal direction. The above operation is called bit interleave processing. FIG. 29 shows a configuration diagram of bit interleaving processing in M-value modulation.

In step S206, the codeword C _i (i = 1 to 44880) subjected to bit interleaving processing read from the temporary memory by the mapping unit 15 is arranged at each signal point (phase point) determined by the modulation method for each M bits. (Mapping) to generate modulation symbols. Further, since M corresponds to the modulation order, the codewords C _i (i = 1 to 44880) can be arranged at each phase point without excess or deficiency by the above operation.

  In step S207, the time division multiplexing / orthogonal modulation unit 16 performs orthogonal modulation using the modulation symbol in step S206 to generate a transmission signal (that is, a modulation signal).

  By repeating the processes of steps S201 to S207, the modulation method and coding rate are changed for each 44880 bits from the transmission apparatus 1, and a transmission signal that is LDPC-coded for every 48880 bits can be generated.

  The LDPC encoding units 11-1 and 11-2 have 44880 bits as a basic unit, and 44880 is 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, etc. It is a value divisible by the value. Therefore, the transmission apparatus 1 can use various values as the modulation order M, and various values such as BPSK, QPSK, 8PSK, 16APSK (16QAM), 32APSK (32QAM), 64QAM, 256QAM, and 1024QAM. It can correspond to a modulation system. Therefore, the transmission apparatus 1 can perform signal transmission combining a very flexible modulation scheme and coding rate. Note that the parity check matrix initial value table for the parity check matrix H used in the LDPC encoding in step 204 can be transmitted as auxiliary information from the transmission apparatus 1 to the reception apparatus 2 or is held in advance by the reception apparatus 2. You may let them. Alternatively, the check matrix H itself can be transmitted from the transmission device 1 to the reception device 2, or the check matrix H itself may be held in advance by the reception device 2.

  FIG. 30 is a flowchart showing the process of the decoder 23 in the receiving apparatus 2 (FIG. 5).

  The decoder 23 can be configured by a control unit and a storage unit, similarly to the LDPC encoding units 11-1 and 11-2 (FIG. 9) described above, and a control program for executing each process by the control unit is a storage unit. Stored in

  In step S301, the decoder 23 reads the coding rate information from the transmission control information decoded through the quadrature detection unit 21 (FIG. 9) as a demodulator, and determines the check matrix H.

In step S302, the decoder 23 calculates the log likelihood ratio λ _n (n = 1 to 44880) of the LDPC code y _n for one slot from the signal supplied from the orthogonal detection unit 21 via the energy despreading unit 24. Is calculated. The log likelihood ratio λ _n is a probability P (y _n | x _n = 0) that a received bit received at the receiving side is y _n when a transmission bit x _n having a value of 1 is transmitted, when the transmission bit x _n values 0 was transmitted, received bits received on the receiving side, the probability is y _n P | a logarithm of the ratio of the _{(y n x n = 1)} , the receiving Represents the zeroness of bit y _n .

The log likelihood ratio λ _n is expressed by Equation (7).

・・・（７）

... (7)

In step S303, the decoder 23 performs so-called iterative decoding of the LDPC code by the sum-product decoding method or the like using the likelihood ratio λ _n obtained in step S302. At this time, the decoder 23 performs decoding using the parity check matrix H determined in the LDPC encoding units 11-1 and 11-2 of the transmission apparatus 1. The decoder 23 may calculate a parity check matrix using the parity check matrix initial value table, similarly to the case of the LDPC encoding units 11-1 and 11-2. The number of iteration decoding is an arbitrary value. LDPC decoding can also be performed by a min-sum decoding method other than the sum-product decoding method, for example.

In step S304, the decoded word C ′ _i (i = 1 to 44880) decoded in step S303 is output. In step S305, steps S301 to S304 are repeated for the sequentially demodulated signals until LDPC decoding by the decoder 23 is completed. If all decoding is completed (Yes in the drawing), a series of LDPC decoding processes are completed.

  FIG. 31 is a flowchart showing a process of the receiving device 2 (FIG. 5).

  In step S401, the modulation signal transmitted from the transmission device 1 is received and demodulated by the quadrature detection unit 21.

  In step S402, the modulation scheme and coding rate of the received modulation signal are determined in advance, and the transmission control signal decoding unit 22 decodes the TMCC signal demodulated through the channel selection unit 20 and the quadrature detection unit 21. To read the transmission control information. Thereby, the modulation scheme and coding rate information can be read from the transmission mode information of the transmission control information.

In step S403, the channel selection unit 20 and the quadrature detection unit 21 demodulate the signal received by the reception device 2 to generate reception symbols y _i (i = 1 to 44880 / M).

In step S404, the decoder 23 calculates a likelihood ratio λ _n (n = 1 to 44880) from the received symbols y _i (i = 1 to 44880 / M). The calculation of the likelihood ratio λ _n (n = 1 to 44880) is the same as the processing in step S302 of the decoder 23.

In step S405, a temporary memory having a two-dimensional structure corresponding to M in the horizontal direction and 44880 / M in the vertical direction is prepared by the decoder 23 or another deinterleave processing unit (not shown), and the likelihood ratio λ _The operation of recording _n (n = 1 to 44880) M from the top in the horizontal direction of the temporary memory is repeated 44880 / M times in the vertical direction. As an example, FIG. 32 shows a configuration diagram of deinterleaving processing in M-value modulation. After the recording is completed, an operation of reading the likelihood ratio λ _n (n = 1 to 44880) every 44880 / M bits from the top in the horizontal direction of the temporary memory in the vertical direction is read M times in the horizontal direction. The above operation is called deinterleave processing.

In step S406, the decoder 23 performs LDPC decoding using the likelihood ratio λ _n (n = 1 to 44880) after the deinterleaving process read in step S405, and the decoded word C ′ _i (i = 1 to 1). 44880) and an information bit string I ′ _i (i = 1 to 44880-P) is output.

In step S407, when the information bit string is encoded with another error correction code connected to the LDPC code in the transmission apparatus 1 (for example, BCH code), the information bit string I ′ _i (i = 1 to 44880-P). The outer code decoding unit 25 performs a decoding process corresponding to the used error correction code and outputs a decoding result. When a BCH code is used, syndrome calculation is performed from the bit string of the information bit string I ′ _i (i = 1 to 44880-P) that has been LDPC decoded, and the net information bit string is decoded by the Barrenkamp-Massie method or the like. Is possible.

  As described above, by repeating Step S401 to Step S407, it is possible to receive the transmission signal (modulated signal) generated by the transmission apparatus 1 in units of 48880 bits.

  In this way, the reception device 2 can receive transmission signals corresponding to various combinations of coding rates and modulation methods generated by the transmission device 1.

  By the way, in the parity check matrix initial value table shown in FIGS. 11 to 24, the coding rate is 73/120 (nominal 3/5), 27/40 (nominal 2/3), 89/120 (nominal 3/4). ), 97/120 (nominal 4/5), 101/120 (nominal 5/6), 7/8, and 109/120 (nominal 9/10) are created for each optimal check matrix H.

The optimal check matrix H for each coding rate is an LDPC code modulation signal obtained from the check matrix H for each coding rate with a low E _b / N _o (signal power to noise power ratio per bit). It is a parity check matrix that satisfies a predetermined condition that minimizes BER (Bit Error Rate) when transmitted.

Optimal parity check matrix H with a predetermined coding rate performs a simulation to measure BER when LDPC code modulation signals obtained from various parity check matrices satisfying a predetermined condition are transmitted at a low E _b / N _o Is required.

As the predetermined condition that the optimal check matrix H should satisfy, for example, there is a column having a column weight of 3 in the partial matrix H _A (FIG. 7), and a column of a column having a column weight of 3 The ratio of the number of columns of the column whose column weight is another value to the number is a predetermined value, the row weight is constant regardless of the row, and one element called cycle 4 is 2 × There is a state where there is no lined-up state.

  Here, FIG. 33 shows a state called cycle 4 and a state called cycle 6.

In the partial matrix H _A , it is known that when one element is dense as in the cycle 4 or the like, the decoding performance of the LDPC code deteriorates. For this reason, the predetermined check matrix H must satisfy As a condition of the above, it is required that the cycle 4 does not exist.

  Note that the predetermined condition to be satisfied by the optimal check matrix H is appropriately determined from the viewpoints of improving the decoding performance of the LDPC code and facilitating (simplifying) the decoding process of the LDPC code.

  The coding rate is 73/120 (nominal 3/5), 27/40 (nominal 2/3), 89/120 (nominal 3/4), which satisfies the predetermined condition and minimizes the BER. Created for each parity check matrix H (optimal parity check matrix H) of 97/120 (nominal 4/5), 101/120 (nominal 5/6), 7/8, and 109/120 (nominal 9/10) The parity check matrix initial value table is the parity check matrix initial value table shown in FIGS.

Next, in transmitting apparatus 1 (FIG. 3), mapping section 15 maps data such as LDPC code (codeword C _i (i = 1 to 44880)) to each signal point determined by the modulation scheme.

That is, the mapping unit 15 sets the data supplied thereto on an IQ plane (IQ constellation) defined by an I axis representing an I component in phase with a carrier wave and a Q axis representing a Q component orthogonal to the carrier wave. Are symbolized into symbols (symbol values) represented by signal points determined by the modulation method.

  FIG. 34 shows an arrangement of 16 signal points with a modulation scheme of 16 APSK.

16 signal points of 16APSK, the radius and the inner circumferential circle of R _1, the radius is arranged on the outer peripheral circle of the large of R ₂ from R _1.

In other words, the radius on the inner circumference of the R _1, at equal angles, are arranged four signal points, the radius on the outer periphery ¥ R _2, at equal angles, the 12 signal points Is arranged.

Further, for the 16 signal points of 16APSK, the radius R ₂ of the outer circumference, the radius R ₂ of the radius ratio (outer circumference which is the ratio of the radius R ₁ of the inner circumferential circle of the inner circumferential circle radius R ₁ Γ = R ₂ / R ₁ is determined to be an optimum value for each coding rate of the LDPC code to be mapped to the signal point.

That is, for LDPC codes with a coding rate of nominal 3/5, nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal 9/10, the optimum radius The ratio γ = R ₂ / R ₁ is 2.87, 2.92, 2.97, 2.73, 2.67, 2.76, and 2.69, respectively.

In an actual modulator, it is mapped to a signal point coordinate and modulated based on these optimal radius ratios γ = R ₂ / R ₁ . Therefore, for example, in a modulator having a D / A converter with 10-bit accuracy, the signal point is a value rounded to a binary 10-bit value. For this reason, the radius ratio γ = R ₂ / R ₁ as a strict numerical value is also a value with an accuracy of about 10 bits, and may be different for each code point. This is an implementation limitation and not an essential difference.

  FIG. 35 shows an arrangement of 32 signal points with a modulation scheme of 32APSK.

32 signal points of 32APSK, the radius of the first inner circumferential circle of R _1, the radius is larger than R ₁ of R ₂ the second inner peripheral circle, and the radius is larger than R ₂ R It is arranged on ₃ outer circles.

That is, four signal points are equiangularly arranged on the first inner circle with radius R ₁ and equiangular on the second inner circle with radius R ₂ . , Twelve signal points are arranged. The radius On the outer periphery ¥ R _3, at equal angles, the 16 signal points are arranged.

Further, for 32 signal points of 32APSK, a first radius ratio (second inner circumference) which is a ratio of the radius R ₂ of the second inner circumference circle and the radius R _{1 of} the first inner circumference circle. radius R ₂ of the circle is, many times a one value representing a) gamma ₁ = R ₂ / R ₁ is the radius R ₁ of the first inner circumference is, the coding rate of the subject of the LDPC code to be mapped to the signal point together is defined to an optimum value each time, and the radius R ₃ of the outer circumference, the second radius ratio (the radius R ₃ of the outer circumference which is the ratio of the radius R ₁ of the first inner circumference, the many times a value indicating _{which) γ 2 = R 3 / R} 1 of the inner circumferential circle radius R ₁ of 1, determined to an optimum value for each coding rate of the LDPC codes subject to be mapped to the signal point ing.

That is, the optimal first radius ratio γ for LDPC codes having a coding rate of nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal 9/10. ₁ = R ₂ / R ₁ is 2.92, 2.97, 2.73, 2.67, 2.76, and 2.69, which are the same as the radius ratio γ of 16APSK, respectively, and the optimal second radius ratio γ ₂ = R ₃ / R ₁ is 5.68, 5.57, 5.05, 4.80, 4.82, and 4.66, respectively.

In an actual modulator, mapping is performed to signal point coordinates and modulation based on these optimum radius ratios γ ₁ = R ₂ / R ₁ and γ ₂ = R ₃ / R ₁ . Therefore, for example, in a modulator having a D / A converter with 10-bit accuracy, the signal point is a value rounded to a binary 10-bit value. For this reason, the radius ratios γ ₁ = R ₂ / R ₁ and γ ₂ = R ₃ / R ₁ as strict numerical values also have values of approximately 10 bits, and may be different values for each code point. This is an implementation limitation and not an essential difference.

Here, the optimum first radius ratio γ ₁ (radius ratio γ) and the optimum second radius ratio γ ₂ for the LDPC code of each coding rate are, for example, the parity check matrix initial value table described above. Perform a simulation (hereinafter referred to as a measurement simulation as appropriate) to measure the BER when transmitting modulated signals of 16APSK and 32APSK of LDPC code obtained from the optimal check matrix H for each coding rate , The first radius ratio γ ₁ (radius ratio γ) that minimizes the BER and the second radius ratio γ ₂ are detected.

FIG. 36 shows E _b / N _o used in the measurement simulation and the number of frames used in the BER measurement.

That is, in FIG. 36, in the measurement simulation, the coding rates are nominal 3/5, nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal 9/10. For each of the above, E _b / N _o when the 16 APSK modulated signal of the LDPC code obtained from the above optimal check matrix H and the number of frames used for BER measurement are shown.

Also, the lower part of FIG. 36 shows that in the measurement simulation, the coding rate is about 2/3 nominal, 3/4 nominal, 4/5 nominal, 5/6 nominal, 7/8 nominal and 9/10 nominal. shows the E _b / N _o at the time of transmitting modulation signals of 32APSK the LDPC code obtained from the optimum parity check matrix H described above, the number of frames used for measuring the BER.

In the measurement simulation, E _b / N _o is the value of BER when the radius ratio γ (γ ₁ , γ ₂ ) is changed so that the minimum value of BER can be accurately detected. As the shape in the vicinity of the minimum value, it is adjusted to a value such that the shape of a substantially parabola can be observed), and FIG. 36 shows E _b / N _o of such a value.

  FIG. 37 shows that the coding rates obtained by measurement simulation for 16APSK are nominal 3/5, nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal. The relationship between the radius ratio γ and the BER for each of 9/10 is shown.

  FIG. 38 is an enlarged view of a portion where the BER in FIG. 37 is minimum.

  According to FIGS. 37 and 38, when the coding rate is different, the radius ratio γ that minimizes the BER is different. Therefore, for 16 APSK, the optimum radius ratio γ, that is, the BER, is different for each coding rate. It can be seen that there is a radius ratio γ that minimizes.

FIG. 39 shows that the coding rates obtained by the measurement simulation for 32APSK are nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal 9/10, respectively. Shows the relationship between the _second radius ratio γ ₂ and the BER.

  FIG. 40 is an enlarged view of a portion where the BER of FIG. 39 is minimum.

In the measurement simulation for 32APSK, the coding rate is the first for each of nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal 9/10. As the radius ratio γ ₁ , the optimum radius ratio γ obtained by the measurement simulation for 16APSK was used.

According to FIG. 39 and FIG. 40, when the coding rate is different, the second radius ratio γ _{2 at} which the BER is minimum is different. Therefore, for 32APSK as well as 16APSK, for each coding rate, best second radius ratio gamma _2, that is, it can be seen that the second radius ratio gamma ₂ that the BER minimizes exists.

FIG. 41 shows the coding rate obtained by the measurement simulation for 16APSK performed by setting E _b / N _o to the value shown in FIG. 36 and a value larger by 0.03 dB or 0.05 dB than that shown in FIG. / 3, Nominal 3/4, Nominal 4/5, Nominal 5/6, 7/8, and Nominal 9/10, the relationship between the radius ratio γ and BER is shown.

According to FIG. 41, it can be seen that the radius ratio γ, which is the minimum BER, varies depending on the coding rate, but is almost constant regardless of E _b / N _o .

  FIG. 42 shows that the coding rates obtained by measurement simulation for 16APSK are nominal 3/5, nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal. The radius ratio γ at which the BER is minimum is shown for each of 9/10.

  The optimum radius ratio γ described with reference to FIG. 34 is the radius ratio γ of FIG. 42 that minimizes the BER.

FIG. 43 shows that the coding rates obtained by the measurement simulation for 32APSK are nominal 2/3, nominal 3/4, nominal 4/5, nominal 5/6, 7/8, and nominal 9/10, respectively. The first radius ratio γ ₁ and the second radius ratio γ ₂ with the smallest BER are shown.

The optimum first radius ratio γ ₁ and second radius ratio γ ₂ described with reference to FIG. 35 are respectively the first radius ratio γ ₁ and the second radius ratio γ _{2 in FIG.} It has become.

  As described above, transmitting apparatus 1 (FIG. 3) performs LDPC encoding using optimal check matrix H for each coding rate in LDPC encoding section 11-1. Therefore, the error correction performance can be improved.

Furthermore, the transmission apparatus 1 uses the mapping unit 15 to obtain an LDPC code obtained by using the optimal check matrix H for each coding rate and an optimum radius ratio (γ, γ ₁ , γ ₂₎ for each coding rate. ) Signal points (and thus optimum signal points). Therefore, deterioration of transmission characteristics can be prevented.

  The receiving device 2 (FIG. 5) receives the data from the transmitting device 1 as described above based on the optimal signal point arrangement for each coding rate, as in the transmitting device 1, Decode according to the optimal check matrix H for each conversion rate. Therefore, the error correction performance can be improved.

In an actual receiving apparatus, the likelihood is determined and demodulated based on these optimum radius ratios γ = R ₂ / R ₁ or γ ₁ = R ₂ / R ₁ , γ ₂ = R ₃ / R ₁ . Therefore, for example, in a demodulator having an A / D converter with 10-bit accuracy, the signal value is a value rounded to a binary 10-bit value. For this reason, the radius ratios γ = R ₂ / R ₁ or γ ₁ = R ₂ / R ₁ and γ ₂ = R ₃ / R ₁ as strict numerical values are values of about 10 bits, and are different for each code point. Sometimes it becomes a value. This is an implementation limitation and not an essential difference.

  Next, at least a part of a series of processes of the transmission device 1 and the reception device 2 described above can be performed by dedicated hardware or can be performed by software. When a series of processing is performed by software, a program constituting the software is installed in a general-purpose computer or the like.

  Therefore, FIG. 44 shows a configuration example of an embodiment of a computer in which a program for executing the series of processes described above is installed.

  The program can be recorded in advance on a hard disk 305 or a ROM 303 as a recording medium built in the computer.

  Alternatively, the program is stored temporarily on a removable recording medium 311 such as a flexible disk, a CD-ROM (Compact Disc Read Only Memory), an MO (Magneto Optical) disk, a DVD (Digital Versatile Disc), a magnetic disk, or a semiconductor memory. It can be stored permanently (recorded). Such a removable recording medium 311 can be provided as so-called package software.

  The program is installed in the computer from the removable recording medium 311 as described above, or transferred from the download site to the computer wirelessly via a digital satellite broadcasting artificial satellite, or a LAN (Local Area Network), The program can be transferred to a computer via a network such as the Internet. The computer can receive the program transferred in this way by the communication unit 308 and install it in the built-in hard disk 305.

  The computer includes a CPU (Central Processing Unit) 302. An input / output interface 310 is connected to the CPU 302 via the bus 301, and the CPU 302 is operated by an input unit 307 including a keyboard, a mouse, a microphone, and the like by the user via the input / output interface 310. When a command is input as a result of the equalization, a program stored in a ROM (Read Only Memory) 303 is executed accordingly. Alternatively, the CPU 302 also transfers a program stored in the hard disk 305, a program transferred from a satellite or a network, received by the communication unit 308 and installed in the hard disk 305, or a removable recording medium 311 attached to the drive 309. The program read and installed in the hard disk 305 is loaded into a RAM (Random Access Memory) 304 and executed. Thereby, the CPU 302 performs processing according to the above-described flowchart or processing performed by the configuration of the above-described block diagram. Then, the CPU 302 outputs the processing result from the output unit 306 configured with an LCD (Liquid Crystal Display), a speaker, or the like, for example, via the input / output interface 310, or from the communication unit 308 as necessary. Transmission and further recording on the hard disk 305 are performed.

  Here, in this specification, the processing steps for describing a program for causing a computer to perform various types of processing do not necessarily have to be processed in time series according to the order described in the flowchart, but in parallel or individually. This includes processing to be executed (for example, parallel processing or processing by an object).

  Further, the program may be processed by one computer or may be distributedly processed by a plurality of computers. Furthermore, the program may be transferred to a remote computer and executed.

  Other error correction codes combined with LDPC codes may be block codes such as Reed-Solomon codes or convolutional codes in addition to BCH encoding.

  In the present embodiment, the transmitting apparatus 1 stores a parity check matrix initial value table, and generates an optimal parity check matrix H for each coding rate from the parity check matrix initial value table. If there is no problem in the storage capacity, the optimal check matrix H for each coding rate can be stored instead of the check matrix initial value table. In this case, it is not necessary to perform processing for generating the check matrix H from the check matrix initial value table. The same applies to the receiving device 2.

  The embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

It is a figure which shows an example of the check matrix of column weight 3 and row weight 4. It is a figure which shows the structural example of the multiplex frame which the transmitter 1 transmits. It is a block diagram which shows the structural example of one Embodiment of the transmitter of the digital data transmission system to which this invention is applied. It is a figure which shows an example of the modulation signal which the transmitter 1 transmits. It is a block diagram which shows the structural example of one Embodiment of the receiver of the digital data transmission system to which this invention is applied. Is a diagram illustrating an example of a partial matrix H _T corresponding to parity length P of the check matrix H. 2 is a diagram illustrating a basic structure of a check matrix H. FIG. It is a figure which shows the information length and parity length for every encoding rate. It is a block diagram which shows the structural example of the LDPC encoding part 11-1. It is a flowchart which shows the process of the LDPC encoding part 11-1. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 3/5. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 3/5. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 2/3. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 2/3. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 3/4. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 3/4. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 4/5. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 4/5. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 5/6. It is a figure which shows the parity check matrix initial value table whose encoding rate is nominal 5/6. It is a figure which shows the parity check matrix initial value table with a coding rate of 7/8. It is a figure which shows the parity check matrix initial value table with a coding rate of 7/8. It is a figure which shows the parity check matrix initial value table with a code rate of 9/10. It is a figure which shows the parity check matrix initial value table with a code rate of 9/10. It is a figure explaining the method to produce | generate the check matrix H from a check matrix initial value table. It is a figure which shows the list | wrist of k corresponding to the information length for every coding rate, and Q corresponding to parity length. 4 is a flowchart for explaining processing of the transmission device 1. It is a diagram showing a configuration view and a BCH generator polynomial list of information bits I _i. 6 is a diagram for describing bit interleaving processing in M-value modulation in the transmission apparatus 1. FIG. 5 is a flowchart showing a processing process of a decoder 23. 5 is a flowchart for explaining processing of the reception device 2. 6 is a diagram for explaining deinterleaving processing in M-value modulation in the receiving device 2. FIG. It is a figure which shows the example of the cycle 4 and the cycle 6. FIG. It is a figure which shows arrangement | positioning of the signal point of 16APSK. It is a figure which shows arrangement | positioning of the signal point of 32APSK. And E _b / N _o of employing the measurement simulation illustrates the number of frames used for calculation of the BER. It is a figure which shows the relationship between radius ratio (gamma) and BER in case a modulation system is 16APSK. It is the figure which expanded a part of FIG. It is a figure which shows the relationship between _2nd radius ratio (gamma) ₂ and BER in case a modulation system is 32APSK. It is the figure which expanded a part of FIG. For different E _b / N _o, which is a diagram showing the relationship between the radius ratio γ and BER. It is a figure which shows radius ratio (gamma) from which the BER obtained by the measurement simulation about 16APSK becomes the minimum. It is a figure which shows _1st radius ratio (gamma) ₁ and 2nd radius ratio (gamma) _{2 from} which the BER obtained by the measurement simulation about 32APSK becomes the minimum. It is a block diagram which shows the structural example of one Embodiment of the computer to which this invention is applied.

Explanation of symbols

  1 transmitter, 2 receiver, 10 frame generator, 11-1, 11-2 LDPC encoder (LDPC encoding), 11-3, 11-4 outer code encoder (BCH encoding), 11a control Unit, 11b storage unit, 12, 13 energy spreading unit, 14 switch, 15 modulation mapping unit, 16 time division multiplexing / orthogonal modulation unit, 20 channel selection unit, 21 orthogonal detection unit, 22 transmission control signal decoding unit, 23 decoder (LDPC decoding), 24 energy despreading unit, 25 outer code decoding unit (BCH decoding), 301 bus, 302 CPU, 303 ROM, 304 RAM, 305 hard disk, 306 output unit, 307 input unit, 308 communication unit, 309 drive 310 Input / output interface, 311 Removable recording medium

Claims (54)

A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 73/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the above-mentioned circumference circle is 2.87 times the radius of the above-mentioned circumference circle. The transmitting device characterized by things. The transmission device according to claim 1,
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
357 954 7119 7201 7951 8660 8833 10902 13537 15019 16162 17393 17414
415 1005 2768 4478 6376 6992 10421 11744 13008 13294 16054 16103 17398
33 1278 5158 7309 7692 7725 10635 12376 12386 14426 14624 15432 17361
1005 2169 2215 3348 3667 4112 6118 8391 9296 9353 14480 16954 17519
789 1675 1751 6153 6377 13166 13887 13905 14217 14507 14753 15707 15896
355 1880 2959 3279 3328 6405 7962 9391 11195 11415 13999 14370 17134
1487 2810 3059 3354 3515 4282 8082 14613 15099 15268 16682 17303 17559
1140 2561 2662 2668 3505 4851 5341 6138 10407 12194 13150 13223 13239
3068 3856 4550 8151 8244 9602 9752 11365 11636 11768 12134 13566 17105
1435 1664 2304 3212 4974 8135 11314 11588 11667 12195 15385 15715 16714
1741 1947 2773 4045 4340 8244 9170 9583 12382 13645 13768 14027 16709
4247 5364 12994
24 1585 9160
5678 9509 12795
1584 2932 7313
5311 6685 16318
1053 9398 14842
9448 12744 13810
3040 3679 7686
9816 11028 13609
352 3396 7645
293 6003 12642
6840 11000 13886
3030 6910 11489
4601 16312 16351
5633 5708 9483
6931 12266 15863
4080 11013 16587
6077 6901 8660
11160 12563 16833
12610 13589 17255
597 6780 12541
3572 5296 16178
2772 10557 16953
8315 9497 12811
9076 10590 17513
9464 11633 12939
117 11613 11782
4008 7056 12120
2156 6956 9614
11255 11681 14684
374 5204 5316
5750 10140 10754
3246 15326 16788
4839 13725 14859
3760 13834 16089
2988 3455 12733
5093 8924 16859
3592 3621 16569
6053 7951 8316
7331 13216 17181
8094 11141 16500
1956 3488 10371
2852 5454 8847
3016 3177 10250
2990 12736 13293
8599 10333 12826
11154 13241 16994
6472 14558 15541
309 3770 15650
3890 6732 12686
1791 5409 16925
10464 14384 14699
1282 10278 15135
5851 9569 10063
9527 13932 17090
4192 6788 17248
2322 2357 9161
1381 7313 16246
196 3561 7252
5881 10640 14399
1451 14495 17425
2911 8369 9439
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding by a code having a coding rate of 73/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.87 times the radius of the inner circumference circle. The transmission method according to claim 3, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
357 954 7119 7201 7951 8660 8833 10902 13537 15019 16162 17393 17414
415 1005 2768 4478 6376 6992 10421 11744 13008 13294 16054 16103 17398
33 1278 5158 7309 7692 7725 10635 12376 12386 14426 14624 15432 17361
1005 2169 2215 3348 3667 4112 6118 8391 9296 9353 14480 16954 17519
789 1675 1751 6153 6377 13166 13887 13905 14217 14507 14753 15707 15896
355 1880 2959 3279 3328 6405 7962 9391 11195 11415 13999 14370 17134
1487 2810 3059 3354 3515 4282 8082 14613 15099 15268 16682 17303 17559
1140 2561 2662 2668 3505 4851 5341 6138 10407 12194 13150 13223 13239
3068 3856 4550 8151 8244 9602 9752 11365 11636 11768 12134 13566 17105
1435 1664 2304 3212 4974 8135 11314 11588 11667 12195 15385 15715 16714
1741 1947 2773 4045 4340 8244 9170 9583 12382 13645 13768 14027 16709
4247 5364 12994
24 1585 9160
5678 9509 12795
1584 2932 7313
5311 6685 16318
1053 9398 14842
9448 12744 13810
3040 3679 7686
9816 11028 13609
352 3396 7645
293 6003 12642
6840 11000 13886
3030 6910 11489
4601 16312 16351
5633 5708 9483
6931 12266 15863
4080 11013 16587
6077 6901 8660
11160 12563 16833
12610 13589 17255
597 6780 12541
3572 5296 16178
2772 10557 16953
8315 9497 12811
9076 10590 17513
9464 11633 12939
117 11613 11782
4008 7056 12120
2156 6956 9614
11255 11681 14684
374 5204 5316
5750 10140 10754
3246 15326 16788
4839 13725 14859
3760 13834 16089
2988 3455 12733
5093 8924 16859
3592 3621 16569
6053 7951 8316
7331 13216 17181
8094 11141 16500
1956 3488 10371
2852 5454 8847
3016 3177 10250
2990 12736 13293
8599 10333 12826
11154 13241 16994
6472 14558 15541
309 3770 15650
3890 6732 12686
1791 5409 16925
10464 14384 14699
1282 10278 15135
5851 9569 10063
9527 13932 17090
4192 6788 17248
2322 2357 9161
1381 7313 16246
196 3561 7252
5881 10640 14399
1451 14495 17425
2911 8369 9439
A transmission method characterized by comprising: A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Error correction coding means for performing error correction coding with a code having a coding rate of 27/40,
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the above-mentioned circumference circle is 2.92 times the radius of the above-mentioned circumference circle. The transmitting device characterized by things. The transmission device according to claim 5, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
4958 6639 6721 8238 9540 9550 10491 11742 11641 12092 13056 13460
1135 1453 1545 1594 2703 3390 4538 4466 6018 11272 11598 12726
4975 4835 7828 9796 9878 11211 11805 11887 12215 12732 13357 14181
477 1914 3849 5397 5569 7818 7910 10083 10247 11108 13025 13558
918 2825 3050 3130 3347 9325 11410 11549 12972 13560 14292 14183
1996 6166 6176 6922 7396 8318 8722 8976 9837 10272 11541 12611
899 1746 2968 3374 5260 5393 6379 7054 8048 9534 10696 14550
1166 4372 5364 5573 10123 10104 10586 10967 10971 10780 13320 14450
653 1703 1713 3800 4999 7275 7457 8366 8515 9175 9770 14341
897 1176 1100 1689 2011 1912 2195 3827 4942 5395 6179 8525
883 1697 2535 2785 7982 8505 8794 9803 10643 10411 12033 13592
4688 4907 6004 6338 6537 9299 11769 12841 13341 13843 13650 14362
5526 6516 10983
11959 13659 13523
2947 5532 8679
8687 12867 13486
5450 6719 10727
1432 3767 12129
735 4095 11557
9755 10288 13978
694 5899 6270
5696 6393 10124
4384 4710 7582
7500 11231 12010
5694 9259 11477
5983 6762 8156
2004 8197 11969
1881 4872 8853
7242 9017 9751
241 2168 8361
7254 7375 10401
3236 3726 5446
4979 5151 5778
4093 5858 6926
3714 13072 14265
2537 6752 9503
3599 10153 10534
2406 6141 14388
2334 12379 12664
2086 9319 14140
895 11639 13814
405 4456 13349
3601 8072 11104
7908 11344 12523
362 8113 10934
2330 3931 9632
1266 3150 3564
2494 4013 7900
1186 9395 9216
1553 7090 7377
4085 6389 8894
8730 9591 12502
6434 7131 13691
7172 7295 10575
1184 9936 14358
5284 8884 10438
407 5149 14548
5079 7049 13527
3685 7642 7992
2209 2453 3177
2978 4341 8029
846 3478 12943
2332 10276 13322
1871 8802 13277
2580 4292 10329
3277 7785 14210
6832 12949 13117
1994 4257 4425
2158 4782 13568
530 11096 11723
3183 12564 14152
403 6842 9509
9895 14161 14474
487 3318 11590
2517 6266 14306
3031 3769 11928
3029 3154 11846
6268 14052 14585
3933 5327 11826
6514 12785 13158
7888 11414 12662
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 27/40,
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.92 times the radius of the inner circumference circle. The transmission method according to claim 7, comprising:
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
4958 6639 6721 8238 9540 9550 10491 11742 11641 12092 13056 13460
1135 1453 1545 1594 2703 3390 4538 4466 6018 11272 11598 12726
4975 4835 7828 9796 9878 11211 11805 11887 12215 12732 13357 14181
477 1914 3849 5397 5569 7818 7910 10083 10247 11108 13025 13558
918 2825 3050 3130 3347 9325 11410 11549 12972 13560 14292 14183
1996 6166 6176 6922 7396 8318 8722 8976 9837 10272 11541 12611
899 1746 2968 3374 5260 5393 6379 7054 8048 9534 10696 14550
1166 4372 5364 5573 10123 10104 10586 10967 10971 10780 13320 14450
653 1703 1713 3800 4999 7275 7457 8366 8515 9175 9770 14341
897 1176 1100 1689 2011 1912 2195 3827 4942 5395 6179 8525
883 1697 2535 2785 7982 8505 8794 9803 10643 10411 12033 13592
4688 4907 6004 6338 6537 9299 11769 12841 13341 13843 13650 14362
5526 6516 10983
11959 13659 13523
2947 5532 8679
8687 12867 13486
5450 6719 10727
1432 3767 12129
735 4095 11557
9755 10288 13978
694 5899 6270
5696 6393 10124
4384 4710 7582
7500 11231 12010
5694 9259 11477
5983 6762 8156
2004 8197 11969
1881 4872 8853
7242 9017 9751
241 2168 8361
7254 7375 10401
3236 3726 5446
4979 5151 5778
4093 5858 6926
3714 13072 14265
2537 6752 9503
3599 10153 10534
2406 6141 14388
2334 12379 12664
2086 9319 14140
895 11639 13814
405 4456 13349
3601 8072 11104
7908 11344 12523
362 8113 10934
2330 3931 9632
1266 3150 3564
2494 4013 7900
1186 9395 9216
1553 7090 7377
4085 6389 8894
8730 9591 12502
6434 7131 13691
7172 7295 10575
1184 9936 14358
5284 8884 10438
407 5149 14548
5079 7049 13527
3685 7642 7992
2209 2453 3177
2978 4341 8029
846 3478 12943
2332 10276 13322
1871 8802 13277
2580 4292 10329
3277 7785 14210
6832 12949 13117
1994 4257 4425
2158 4782 13568
530 11096 11723
3183 12564 14152
403 6842 9509
9895 14161 14474
487 3318 11590
2517 6266 14306
3031 3769 11928
3029 3154 11846
6268 14052 14585
3933 5327 11826
6514 12785 13158
7888 11414 12662
A transmission method characterized by comprising: A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 89/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.97 times the radius of the inner circumference circle. The transmission device according to claim 9,
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1372 1492 2242 2362 3502 3622 6472 7912 8362 10252
3775 4732 6682 7942 9712 10162 10501 10343 10852 11184
1086 2482 2812 2932 5550 5602 6807 6862 8433 10042
1282 2844 5543 6147 7492 8122 8842 10282 10582 11573
682 986 2274 5780 5872 6595 7712 7674 7972 10828
1552 3000 5218 5182 5423 5635 7528 8756 9742 10553
473 2431 4224 4952 4762 6542 7413 8905 9446 11242
1262 1582 1793 3865 4590 4852 7854 8032 10137 11433
1109 1225 2302 3382 4232 6352 7312 8637 9757 10134
1922 4882 4972 5307 5610 7913 9204 10372 10860 11582
1111 2123 3833 4711 6238 6353 7102 8260 8872 11512
563 2003 3988 3748 3832 6515 7105 8550 10588 10617
689 1102 1735 2724 3023 4135 5309 7026 8334 9532
1384 1882 3594 4385 5784 9832 10752 11064 11274 11393
1316 1373 2040 4287 5483 6239 8878 9745 10855 11454
5243 7344 7493
1710 3597 11007
3472 6323 10974
1649 3082 5812
6444 9481 9809
1134 3352 9502
4553 8782 10972
4462 7073 8814
4781 10023 9989
2303 5754 6262
3055 5513 7162
3053 8337 9952
4012 4853 7015
3685 4583 10709
4588 5184 5242
3952 4288 7884
3112 5303 11152
803 5999 9144
688 1734 3202
2363 9412 9862
3052 7223 7794
8453 9954 11572
562 5093 9172
4709 5693 10095
5752 8573 11004
2244 4403 8452
4258 9442 9534
3263 5157 10919
7553 8932 11488
1402 3683 4644
3353 6684 8062
2093 8002 10164
2820 7432 7824
5363 6804 9232
3203 7734 10167
8518 9085 9052
2723 2995 9802
3328 9112 10614
3474 5046 8583
653 7137 7434
1294 6059 11484
1224 1343 1912
2184 4253 8512
1764 6474 8367
4915 6237 7914
1073 10494 11182
2453 2997 3292
4468 6954 10497
5964 6273 7252
3773 8572 8664
2008 2097 2064
4858 4942 8939
623 4764 8392
2760 6983 10192
982 2573 2694
1732 3743 9024
6712 9332 11223
1252 11363 11544
4312 6365 8662
3303 6925 11135
2753 6811 7225
4314 10823 11062
3448 3924 9562
5453 7704 9622
742 6628 7174
867 833 5632
6481 6717 11373
2452 7583 9324
2640 7222 8902
6173 9352 10889
1222 1522 7582
5758 6234 11452
2100 7020 10822
2633 4792 8214
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 89/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.97 times the radius of the inner circumference circle. The transmission method according to claim 11, comprising:
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1372 1492 2242 2362 3502 3622 6472 7912 8362 10252
3775 4732 6682 7942 9712 10162 10501 10343 10852 11184
1086 2482 2812 2932 5550 5602 6807 6862 8433 10042
1282 2844 5543 6147 7492 8122 8842 10282 10582 11573
682 986 2274 5780 5872 6595 7712 7674 7972 10828
1552 3000 5218 5182 5423 5635 7528 8756 9742 10553
473 2431 4224 4952 4762 6542 7413 8905 9446 11242
1262 1582 1793 3865 4590 4852 7854 8032 10137 11433
1109 1225 2302 3382 4232 6352 7312 8637 9757 10134
1922 4882 4972 5307 5610 7913 9204 10372 10860 11582
1111 2123 3833 4711 6238 6353 7102 8260 8872 11512
563 2003 3988 3748 3832 6515 7105 8550 10588 10617
689 1102 1735 2724 3023 4135 5309 7026 8334 9532
1384 1882 3594 4385 5784 9832 10752 11064 11274 11393
1316 1373 2040 4287 5483 6239 8878 9745 10855 11454
5243 7344 7493
1710 3597 11007
3472 6323 10974
1649 3082 5812
6444 9481 9809
1134 3352 9502
4553 8782 10972
4462 7073 8814
4781 10023 9989
2303 5754 6262
3055 5513 7162
3053 8337 9952
4012 4853 7015
3685 4583 10709
4588 5184 5242
3952 4288 7884
3112 5303 11152
803 5999 9144
688 1734 3202
2363 9412 9862
3052 7223 7794
8453 9954 11572
562 5093 9172
4709 5693 10095
5752 8573 11004
2244 4403 8452
4258 9442 9534
3263 5157 10919
7553 8932 11488
1402 3683 4644
3353 6684 8062
2093 8002 10164
2820 7432 7824
5363 6804 9232
3203 7734 10167
8518 9085 9052
2723 2995 9802
3328 9112 10614
3474 5046 8583
653 7137 7434
1294 6059 11484
1224 1343 1912
2184 4253 8512
1764 6474 8367
4915 6237 7914
1073 10494 11182
2453 2997 3292
4468 6954 10497
5964 6273 7252
3773 8572 8664
2008 2097 2064
4858 4942 8939
623 4764 8392
2760 6983 10192
982 2573 2694
1732 3743 9024
6712 9332 11223
1252 11363 11544
4312 6365 8662
3303 6925 11135
2753 6811 7225
4314 10823 11062
3448 3924 9562
5453 7704 9622
742 6628 7174
867 833 5632
6481 6717 11373
2452 7583 9324
2640 7222 8902
6173 9352 10889
1222 1522 7582
5758 6234 11452
2100 7020 10822
2633 4792 8214
A transmission method characterized by comprising: A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Error correction coding means for performing error correction coding with a code having a coding rate of 97/120,
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.73 times the radius of the inner circumference circle. The transmission device according to claim 13, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1215 1303 1606 1628 1804 2200 2244 5522 8475 8514
1364 2122 3569 4163 4554 4906 5418 4109 7150 8250
1043 1220 2916 4604 4827 6094 6492 6996 7527 8275
1134 2530 4052 3072 6060 5711 6170 6210 6938 8409
1321 1672 2073 2426 3481 4480 7678 7421 7835 8519
1598 1611 2200 2024 4938 5106 5216 6434 7750 8011
1932 1677 2800 3345 5811 6161 7132 7326 7713 7524
1855 1084 5315 5399 5846 6047 6497 7567 8414 7907
1262 3747 4097 5788 5733 6109 6832 6976 8437 8489
902 2082 1986 2479 2926 3666 4527 6857 8145 8522
1067 2848 4332 4822 4603 4759 5250 6182 6296 7900
2465 4449 4402
3939 5505 8147
4444 5346 7062
2046 3235 4116
2427 4335 5033
2118 4322 7480
819 1277 8343
3834 5128 6248
1877 2377 2513
2179 5632 8492
3332 7656 7925
930 2332 6424
804 6056 7350
2757 6645 7174
3547 5232 6940
2229 5493 7943
2008 2794 2884
2135 3158 3874
1149 2883 8010
4423 4445 8379
688 3036 4011
3272 3882 5414
890 1722 3239
4453 5638 7806
2730 4847 5588
1240 3058 7788
4533 6798 6954
3037 6715 7866
871 3640 6426
2797 8097 8421
1830 3549 3762
3786 3938 4229
3702 4752 7722
748 1023 7568
2150 2136 2913
3307 8301 8580
1543 5172 6956
684 6249 7876
6030 7041 7634
2048 2597 5109
2795 4555 6842
3306 4050 5214
3631 4957 8272
2514 4889 8541
2784 6759 8234
3940 5084 8382
6297 6634 6580
1129 8300 8470
2420 3349 7239
1480 6475 6804
841 2028 6436
3301 5766 6116
552 5045 7539
3279 4539 7422
2333 6820 8118
2268 6870 8316
4026 5921 8013
731 1212 6167
3438 5509 6688
1282 5594 8123
1903 3791 7551
893 1440 1501
1914 4340 6628
2647 2994 5018
2786 3245 8016
1614 3743 5258
1018 5065 6293
4291 6937 7640
3636 6077 7992
1265 1586 5765
3830 4599 6716
1122 7508 8213
1567 3213 6471
4978 5544 5874
2993 4405 5786
1826 4885 5681
4664 5907 6338
2621 3542 6491
2178 6143 6974
4105 7267 7282
1232 1431 5808
947 6103 7182
3752 5173 6060
2816 3635 6073
1343 4226 7744
3241 7047 7546
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 97/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.73 times the radius of the inner circumference circle. The transmission method according to claim 15, comprising:
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1215 1303 1606 1628 1804 2200 2244 5522 8475 8514
1364 2122 3569 4163 4554 4906 5418 4109 7150 8250
1043 1220 2916 4604 4827 6094 6492 6996 7527 8275
1134 2530 4052 3072 6060 5711 6170 6210 6938 8409
1321 1672 2073 2426 3481 4480 7678 7421 7835 8519
1598 1611 2200 2024 4938 5106 5216 6434 7750 8011
1932 1677 2800 3345 5811 6161 7132 7326 7713 7524
1855 1084 5315 5399 5846 6047 6497 7567 8414 7907
1262 3747 4097 5788 5733 6109 6832 6976 8437 8489
902 2082 1986 2479 2926 3666 4527 6857 8145 8522
1067 2848 4332 4822 4603 4759 5250 6182 6296 7900
2465 4449 4402
3939 5505 8147
4444 5346 7062
2046 3235 4116
2427 4335 5033
2118 4322 7480
819 1277 8343
3834 5128 6248
1877 2377 2513
2179 5632 8492
3332 7656 7925
930 2332 6424
804 6056 7350
2757 6645 7174
3547 5232 6940
2229 5493 7943
2008 2794 2884
2135 3158 3874
1149 2883 8010
4423 4445 8379
688 3036 4011
3272 3882 5414
890 1722 3239
4453 5638 7806
2730 4847 5588
1240 3058 7788
4533 6798 6954
3037 6715 7866
871 3640 6426
2797 8097 8421
1830 3549 3762
3786 3938 4229
3702 4752 7722
748 1023 7568
2150 2136 2913
3307 8301 8580
1543 5172 6956
684 6249 7876
6030 7041 7634
2048 2597 5109
2795 4555 6842
3306 4050 5214
3631 4957 8272
2514 4889 8541
2784 6759 8234
3940 5084 8382
6297 6634 6580
1129 8300 8470
2420 3349 7239
1480 6475 6804
841 2028 6436
3301 5766 6116
552 5045 7539
3279 4539 7422
2333 6820 8118
2268 6870 8316
4026 5921 8013
731 1212 6167
3438 5509 6688
1282 5594 8123
1903 3791 7551
893 1440 1501
1914 4340 6628
2647 2994 5018
2786 3245 8016
1614 3743 5258
1018 5065 6293
4291 6937 7640
3636 6077 7992
1265 1586 5765
3830 4599 6716
1122 7508 8213
1567 3213 6471
4978 5544 5874
2993 4405 5786
1826 4885 5681
4664 5907 6338
2621 3542 6491
2178 6143 6974
4105 7267 7282
1232 1431 5808
947 6103 7182
3752 5173 6060
2816 3635 6073
1343 4226 7744
3241 7047 7546
A transmission method characterized by comprising: A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 101/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.67 times the radius of the inner circumference circle. The transmission device according to claim 17, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
836 3140 3644 3968 4238 5858 5930 6470 6542 6866
1183 2385 3689 3248 3680 4112 4616 4868 5210 6344
494 1179 2908 3158 3715 5432 5426 5617 6998 6600
1325 2485 3466 5228 4605 5244 6102 6286 5107 6955
880 2704 3752 4204 4493 5403 6368 6308 5265 6950
538 1209 1201 1330 2205 2887 2931 3016 3613 6036
1699 2414 2441 1307 3886 4716 5761 6712 6817 5491
1299 1143 1974 2683 3880 4554 4851 5714 5811 6896
913 2626 4797 2922 3181 4324 5023 5936 6717 2455
2620 2983 3267 3036 4460 5026 5366 6428 6442 6644
2115 3862 3472 4369 4889 6431 6995 6743 7086 6093
3375 5631 7082
972 1348 5296
1001 1365 1684
1396 4861 4841
5103 5607 6092
1089 2876 5303
2731 4742 5733
1214 1594 5145
2046 4078 5566
3252 6375 6528
2138 2942 6892
983 3759 5216
1402 1888 4552
4033 6110 6794
2510 4725 6459
1188 3936 6868
430 900 3284
651 6083 6115
2973 4458 4475
2592 3141 5737
2194 5620 6060
3785 4332 4562
1652 4412 4736
778 2943 7104
695 2619 6133
2104 3650 6099
1680 6920 6970
1526 2109 3268
732 1075 3914
2958 3393 5055
1858 6297 6926
3673 3667 6852
3445 5500 6503
787 3071 6512
477 712 2852
914 2121 2898
2187 3251 3769
391 4383 6766
1338 1713 5858
1182 1905 2622
459 685 2150
2048 4077 4976
389 2360 2858
482 3852 5918
1666 4881 6507
1304 2709 5788
578 5561 6276
1938 2456 4323
929 1559 5859
1941 3070 3266
2710 3820 4452
4295 5300 5717
841 1845 4461
2087 3257 5057
3199 4322 4796
3992 4258 4639
3547 3786 5040
1099 3646 5320
1199 1593 2116
1835 6078 6693
1360 4214 5686
1655 2661 5662
3478 5227 5993
3201 4482 5066
659 1701 6062
4720 5070 6264
2408 4415 6264
2259 5124 7054
5558 5810 5863
3205 4959 6353
1305 3467 6132
639 4348 5894
567 3050 4065
1082 2497 4129
2006 5420 5247
1358 1600 3883
1060 1136 2716
1620 2407 6841
1899 6146 6386
1492 1792 4762
606 1648 4064
679 2534 7084
4403 6195 6601
3704 4840 5560
612 2406 2755
523 5545 6783
2296 3774 6996
1413 4713 7033
2386 3119 5283
3291 4930 6981
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 101/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The transmission method according to claim 1, wherein a radius of the outer circumference circle is 2.67 times a radius of the inner circumference circle. The transmission method according to claim 19, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
836 3140 3644 3968 4238 5858 5930 6470 6542 6866
1183 2385 3689 3248 3680 4112 4616 4868 5210 6344
494 1179 2908 3158 3715 5432 5426 5617 6998 6600
1325 2485 3466 5228 4605 5244 6102 6286 5107 6955
880 2704 3752 4204 4493 5403 6368 6308 5265 6950
538 1209 1201 1330 2205 2887 2931 3016 3613 6036
1699 2414 2441 1307 3886 4716 5761 6712 6817 5491
1299 1143 1974 2683 3880 4554 4851 5714 5811 6896
913 2626 4797 2922 3181 4324 5023 5936 6717 2455
2620 2983 3267 3036 4460 5026 5366 6428 6442 6644
2115 3862 3472 4369 4889 6431 6995 6743 7086 6093
3375 5631 7082
972 1348 5296
1001 1365 1684
1396 4861 4841
5103 5607 6092
1089 2876 5303
2731 4742 5733
1214 1594 5145
2046 4078 5566
3252 6375 6528
2138 2942 6892
983 3759 5216
1402 1888 4552
4033 6110 6794
2510 4725 6459
1188 3936 6868
430 900 3284
651 6083 6115
2973 4458 4475
2592 3141 5737
2194 5620 6060
3785 4332 4562
1652 4412 4736
778 2943 7104
695 2619 6133
2104 3650 6099
1680 6920 6970
1526 2109 3268
732 1075 3914
2958 3393 5055
1858 6297 6926
3673 3667 6852
3445 5500 6503
787 3071 6512
477 712 2852
914 2121 2898
2187 3251 3769
391 4383 6766
1338 1713 5858
1182 1905 2622
459 685 2150
2048 4077 4976
389 2360 2858
482 3852 5918
1666 4881 6507
1304 2709 5788
578 5561 6276
1938 2456 4323
929 1559 5859
1941 3070 3266
2710 3820 4452
4295 5300 5717
841 1845 4461
2087 3257 5057
3199 4322 4796
3992 4258 4639
3547 3786 5040
1099 3646 5320
1199 1593 2116
1835 6078 6693
1360 4214 5686
1655 2661 5662
3478 5227 5993
3201 4482 5066
659 1701 6062
4720 5070 6264
2408 4415 6264
2259 5124 7054
5558 5810 5863
3205 4959 6353
1305 3467 6132
639 4348 5894
567 3050 4065
1082 2497 4129
2006 5420 5247
1358 1600 3883
1060 1136 2716
1620 2407 6841
1899 6146 6386
1492 1792 4762
606 1648 4064
679 2534 7084
4403 6195 6601
3704 4840 5560
612 2406 2755
523 5545 6783
2296 3774 6996
1413 4713 7033
2386 3119 5283
3291 4930 6981
A transmission method characterized by comprising: A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Error correction coding means for performing error correction coding with a code having a coding rate of 7/8,
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.76 times the radius of the inner circumference circle. The transmission device according to claim 21, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
93 1986 2504 2631 2810 2877 3763 4354 4824
76 385 1193 1434 3481 3979 4379 4436 4587
160 350 911 964 1180 1428 2212 3465 4738
130 389 620 865 1966 1999 2315 3714 4392
139 2226 2900 2932 3167 3550 4630 5155 5271
163 519 902 1789 2809 3731 3759 5270 5287
390 2117 2436 2877 3378 3731 4882 5205 5463
2131 3304 3681 4382 4462 4594 4808 4929 4985
592 676 3162 3391 3817 4392 4847 5492 5513
640 1392 1583 1742 2649 3827 3918 4029 4319
479 669 1097 1380 2222 2538 2809 3727 3750
1214 1592 2559 3574 3966 4108 4284 4646 4930
205 641 1947 2048 2066 2589 3277 3999 4869
424 662 1243 1414 1873 1943 2212 3271 3493
993 1122 1453 2626 3469 3568 3981 4930 5392
892 928 3979
90 2273 4406
1890 2999 3206
2411 4980 5104
712 3958 4361
497 1159 3611
3145 4022 4896
1120 2568 3522
132 888 980
934 1275 2660
2797 3622 5588
2797 4621 5312
4070 4922 5171
851 2474 3190
57 2355 2527
3254 3519 5061
484 1948 4085
405 1895 5547
4288 4338 5337
1695 4773 5356
810 2881 5523
1077 2731 3000
796 3631 5170
1028 1679 3049
1138 3176 3866
2928 3499 4448
1079 1322 4875
1651 2305 3871
3223 3792 5541
833 2418 5504
1918 3292 5534
2953 4430 5553
1487 4715 4964
2396 2686 3438
4201 4519 5427
179 1193 3181
848 987 2822
1136 2399 4467
2909 3650 4553
129 1325 5190
3046 5252 5403
4120 4290 4687
150 3304 5605
16 4685 5478
2910 3667 4453
2471 2565 4228
1694 4247 4900
2116 4092 4412
3003 4733 5351
1377 1432 5404
1024 3100 3224
681 2154 5526
1844 1985 4974
330 2520 3746
2573 3454 5496
2088 4939 5384
1072 3111 3171
3672 3858 5543
2211 5080 5325
673 1822 2238
2003 2825 4007
2880 3302 4719
2080 2877 5362
402 756 2132
2318 2523 5597
241 1344 5488
3164 3215 5465
24 1943 2458
1704 5151 5608
1071 2514 3944
645 2392 3526
1484 1586 5052
3551 4029 5016
891 2493 5049
1686 3183 5438
3366 3538 3698
2033 3490 3792
1366 5137 5476
635 2040 5395
1678 1694 4675
268 849 1655
1400 2723 5093
363 1781 5053
1925 2804 2956
505 1267 2720
1880 2601 4547
2258 3386 5337
2094 5123 5159
1881 2988 3881
201 690 1016
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 7/8,
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.76 times the radius of the inner circumference circle. The transmission method according to claim 23, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
93 1986 2504 2631 2810 2877 3763 4354 4824
76 385 1193 1434 3481 3979 4379 4436 4587
160 350 911 964 1180 1428 2212 3465 4738
130 389 620 865 1966 1999 2315 3714 4392
139 2226 2900 2932 3167 3550 4630 5155 5271
163 519 902 1789 2809 3731 3759 5270 5287
390 2117 2436 2877 3378 3731 4882 5205 5463
2131 3304 3681 4382 4462 4594 4808 4929 4985
592 676 3162 3391 3817 4392 4847 5492 5513
640 1392 1583 1742 2649 3827 3918 4029 4319
479 669 1097 1380 2222 2538 2809 3727 3750
1214 1592 2559 3574 3966 4108 4284 4646 4930
205 641 1947 2048 2066 2589 3277 3999 4869
424 662 1243 1414 1873 1943 2212 3271 3493
993 1122 1453 2626 3469 3568 3981 4930 5392
892 928 3979
90 2273 4406
1890 2999 3206
2411 4980 5104
712 3958 4361
497 1159 3611
3145 4022 4896
1120 2568 3522
132 888 980
934 1275 2660
2797 3622 5588
2797 4621 5312
4070 4922 5171
851 2474 3190
57 2355 2527
3254 3519 5061
484 1948 4085
405 1895 5547
4288 4338 5337
1695 4773 5356
810 2881 5523
1077 2731 3000
796 3631 5170
1028 1679 3049
1138 3176 3866
2928 3499 4448
1079 1322 4875
1651 2305 3871
3223 3792 5541
833 2418 5504
1918 3292 5534
2953 4430 5553
1487 4715 4964
2396 2686 3438
4201 4519 5427
179 1193 3181
848 987 2822
1136 2399 4467
2909 3650 4553
129 1325 5190
3046 5252 5403
4120 4290 4687
150 3304 5605
16 4685 5478
2910 3667 4453
2471 2565 4228
1694 4247 4900
2116 4092 4412
3003 4733 5351
1377 1432 5404
1024 3100 3224
681 2154 5526
1844 1985 4974
330 2520 3746
2573 3454 5496
2088 4939 5384
1072 3111 3171
3672 3858 5543
2211 5080 5325
673 1822 2238
2003 2825 4007
2880 3302 4719
2080 2877 5362
402 756 2132
2318 2523 5597
241 1344 5488
3164 3215 5465
24 1943 2458
1704 5151 5608
1071 2514 3944
645 2392 3526
1484 1586 5052
3551 4029 5016
891 2493 5049
1686 3183 5438
3366 3538 3698
2033 3490 3792
1366 5137 5476
635 2040 5395
1678 1694 4675
268 849 1655
1400 2723 5093
363 1781 5053
1925 2804 2956
505 1267 2720
1880 2601 4547
2258 3386 5337
2094 5123 5159
1881 2988 3881
201 690 1016
A transmission method characterized by comprising: A transmitter for encoding at least one error correction code and performing 16APSK modulation to transmit digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 109/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the above-mentioned circumference circle is 2.69 times the radius of the above-mentioned circumference circle. The transmitting device characterized by things. The transmission device according to claim 25, comprising:
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
220 484 3688 3808
880 1335 2704 4106
544 556 2092 2416
1504 1660 2152
1336 3700 3891
1564 2320 4024
1168 2644 4060
1958 2056 3712
938 2992 3004
3100 3459 4047
1045 1576 3050
278 1826 2235
1000 1984 3255
1178 3662 3724
172 2907 3532
160 2380 3064
628 1116 1790
579 2212 3328
302 435 1264
1479 1792 3796
1300 3591 3901
820 1143 3856
724 1093 2968
1106 3099 3604
255 2164 2656
951 1684 3472
592 2027 2308
2473 2487 3887
1024 1288 2269
736 1851 3172
1166 2436 2547
374 1312 2848
854 1924 3304
456 1108 1372
950 2091 2799
915 1708 1970
304 1059 3804
292 2030 2620
841 1240 1827
1492 2376 3160
546 976 1813
2127 2786 3972
604 2871 3652
471 2822 3040
290 640 3544
2282 2824 3784
1204 3500 4055
699 1743 3364
527 1599 2978
1250 3748 4074
316 373 2692
3220 3324 3490
925 3431 3736
1934 2007 3904
734 1971 2584
2055 3279 3964
1551 1672 4108
1596 2488 2560
1518 3614 3916
2607 3013 4012
663 2942 3940
1659 3267 3730
1740 2559 2752
496 1539 1800
2437 2798 4094
817 1420 3649
1480 1863 2200
2031 2187 2884
274 2716 3049
1491 2960 3232
1899 2523 3316
844 1655 2428
2339 2474 3919
388 2869 3952
999 2139 3508
1180 2115 2668
2379 3520 3589
564 2728 3903
616 1153 3196
697 759 3388
975 1864 3347
711 1418 2307
405 827 1712
1466 3107 3396
2691 3480 3992
952 2173 2605
519 543 1744
1146 1931 2812
1702 2919 3411
687 1593 1634
3384 3460 3528
856 2232 3170
195 411 1443
2522 3190 3988
1406 2377 2464
387 3202 3976
1320 2248 2795
243 2087 2367
448 1227 3698
1478 2999 3208
2546 2619 2632
196 1107 2272
2943 3178 3855
1252 1742 3551
364 591 3076
807 1404 1900
1192 3239 3579
890 2068 3650
793 1850 4048
A transmitting device comprising: A transmission method that performs encoding using at least one error correction code, performs 16APSK modulation, and transmits digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 109/120;
The 16 APSK modulation signal points are 4 signal points on the inner circle and 12 signal points on the outer circle,
The radius of the outer circumference circle is 2.69 times the radius of the inner circumference circle. The transmission method according to claim 27, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
220 484 3688 3808
880 1335 2704 4106
544 556 2092 2416
1504 1660 2152
1336 3700 3891
1564 2320 4024
1168 2644 4060
1958 2056 3712
938 2992 3004
3100 3459 4047
1045 1576 3050
278 1826 2235
1000 1984 3255
1178 3662 3724
172 2907 3532
160 2380 3064
628 1116 1790
579 2212 3328
302 435 1264
1479 1792 3796
1300 3591 3901
820 1143 3856
724 1093 2968
1106 3099 3604
255 2164 2656
951 1684 3472
592 2027 2308
2473 2487 3887
1024 1288 2269
736 1851 3172
1166 2436 2547
374 1312 2848
854 1924 3304
456 1108 1372
950 2091 2799
915 1708 1970
304 1059 3804
292 2030 2620
841 1240 1827
1492 2376 3160
546 976 1813
2127 2786 3972
604 2871 3652
471 2822 3040
290 640 3544
2282 2824 3784
1204 3500 4055
699 1743 3364
527 1599 2978
1250 3748 4074
316 373 2692
3220 3324 3490
925 3431 3736
1934 2007 3904
734 1971 2584
2055 3279 3964
1551 1672 4108
1596 2488 2560
1518 3614 3916
2607 3013 4012
663 2942 3940
1659 3267 3730
1740 2559 2752
496 1539 1800
2437 2798 4094
817 1420 3649
1480 1863 2200
2031 2187 2884
274 2716 3049
1491 2960 3232
1899 2523 3316
844 1655 2428
2339 2474 3919
388 2869 3952
999 2139 3508
1180 2115 2668
2379 3520 3589
564 2728 3903
616 1153 3196
697 759 3388
975 1864 3347
711 1418 2307
405 827 1712
1466 3107 3396
2691 3480 3992
952 2173 2605
519 543 1744
1146 1931 2812
1702 2919 3411
687 1593 1634
3384 3460 3528
856 2232 3170
195 411 1443
2522 3190 3988
1406 2377 2464
387 3202 3976
1320 2248 2795
243 2087 2367
448 1227 3698
1478 2999 3208
2546 2619 2632
196 1107 2272
2943 3178 3855
1252 1742 3551
364 591 3076
807 1404 1900
1192 3239 3579
890 2068 3650
793 1850 4048
A transmission method characterized by comprising: A transmission device that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data,
Error correction coding means for performing error correction coding with a code having a coding rate of 27/40,
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.92 times the radius of the first inner circumference circle,
The radius of the outer circumference circle is 5.68 times the radius of the first inner circumference circle. 30. The transmission device according to claim 29, wherein:
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
4958 6639 6721 8238 9540 9550 10491 11742 11641 12092 13056 13460
1135 1453 1545 1594 2703 3390 4538 4466 6018 11272 11598 12726
4975 4835 7828 9796 9878 11211 11805 11887 12215 12732 13357 14181
477 1914 3849 5397 5569 7818 7910 10083 10247 11108 13025 13558
918 2825 3050 3130 3347 9325 11410 11549 12972 13560 14292 14183
1996 6166 6176 6922 7396 8318 8722 8976 9837 10272 11541 12611
899 1746 2968 3374 5260 5393 6379 7054 8048 9534 10696 14550
1166 4372 5364 5573 10123 10104 10586 10967 10971 10780 13320 14450
653 1703 1713 3800 4999 7275 7457 8366 8515 9175 9770 14341
897 1176 1100 1689 2011 1912 2195 3827 4942 5395 6179 8525
883 1697 2535 2785 7982 8505 8794 9803 10643 10411 12033 13592
4688 4907 6004 6338 6537 9299 11769 12841 13341 13843 13650 14362
5526 6516 10983
11959 13659 13523
2947 5532 8679
8687 12867 13486
5450 6719 10727
1432 3767 12129
735 4095 11557
9755 10288 13978
694 5899 6270
5696 6393 10124
4384 4710 7582
7500 11231 12010
5694 9259 11477
5983 6762 8156
2004 8197 11969
1881 4872 8853
7242 9017 9751
241 2168 8361
7254 7375 10401
3236 3726 5446
4979 5151 5778
4093 5858 6926
3714 13072 14265
2537 6752 9503
3599 10153 10534
2406 6141 14388
2334 12379 12664
2086 9319 14140
895 11639 13814
405 4456 13349
3601 8072 11104
7908 11344 12523
362 8113 10934
2330 3931 9632
1266 3150 3564
2494 4013 7900
1186 9395 9216
1553 7090 7377
4085 6389 8894
8730 9591 12502
6434 7131 13691
7172 7295 10575
1184 9936 14358
5284 8884 10438
407 5149 14548
5079 7049 13527
3685 7642 7992
2209 2453 3177
2978 4341 8029
846 3478 12943
2332 10276 13322
1871 8802 13277
2580 4292 10329
3277 7785 14210
6832 12949 13117
1994 4257 4425
2158 4782 13568
530 11096 11723
3183 12564 14152
403 6842 9509
9895 14161 14474
487 3318 11590
2517 6266 14306
3031 3769 11928
3029 3154 11846
6268 14052 14585
3933 5327 11826
6514 12785 13158
7888 11414 12662
A transmitting device comprising: A transmission method in which at least one error correction code is encoded, and 32APSK modulation is performed to transmit digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 27/40,
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.92 times the radius of the first inner circumference circle,
The transmission method according to claim 1, wherein a radius of the outer circumference circle is 5.68 times a radius of the first inner circumference circle. The transmission method according to claim 31, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
4958 6639 6721 8238 9540 9550 10491 11742 11641 12092 13056 13460
1135 1453 1545 1594 2703 3390 4538 4466 6018 11272 11598 12726
4975 4835 7828 9796 9878 11211 11805 11887 12215 12732 13357 14181
477 1914 3849 5397 5569 7818 7910 10083 10247 11108 13025 13558
918 2825 3050 3130 3347 9325 11410 11549 12972 13560 14292 14183
1996 6166 6176 6922 7396 8318 8722 8976 9837 10272 11541 12611
899 1746 2968 3374 5260 5393 6379 7054 8048 9534 10696 14550
1166 4372 5364 5573 10123 10104 10586 10967 10971 10780 13320 14450
653 1703 1713 3800 4999 7275 7457 8366 8515 9175 9770 14341
897 1176 1100 1689 2011 1912 2195 3827 4942 5395 6179 8525
883 1697 2535 2785 7982 8505 8794 9803 10643 10411 12033 13592
4688 4907 6004 6338 6537 9299 11769 12841 13341 13843 13650 14362
5526 6516 10983
11959 13659 13523
2947 5532 8679
8687 12867 13486
5450 6719 10727
1432 3767 12129
735 4095 11557
9755 10288 13978
694 5899 6270
5696 6393 10124
4384 4710 7582
7500 11231 12010
5694 9259 11477
5983 6762 8156
2004 8197 11969
1881 4872 8853
7242 9017 9751
241 2168 8361
7254 7375 10401
3236 3726 5446
4979 5151 5778
4093 5858 6926
3714 13072 14265
2537 6752 9503
3599 10153 10534
2406 6141 14388
2334 12379 12664
2086 9319 14140
895 11639 13814
405 4456 13349
3601 8072 11104
7908 11344 12523
362 8113 10934
2330 3931 9632
1266 3150 3564
2494 4013 7900
1186 9395 9216
1553 7090 7377
4085 6389 8894
8730 9591 12502
6434 7131 13691
7172 7295 10575
1184 9936 14358
5284 8884 10438
407 5149 14548
5079 7049 13527
3685 7642 7992
2209 2453 3177
2978 4341 8029
846 3478 12943
2332 10276 13322
1871 8802 13277
2580 4292 10329
3277 7785 14210
6832 12949 13117
1994 4257 4425
2158 4782 13568
530 11096 11723
3183 12564 14152
403 6842 9509
9895 14161 14474
487 3318 11590
2517 6266 14306
3031 3769 11928
3029 3154 11846
6268 14052 14585
3933 5327 11826
6514 12785 13158
7888 11414 12662
A transmission method characterized by comprising: A transmission device that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 89/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.97 times the radius of the first inner circumference circle,
The radius of the perimeter circle is 5.57 times the radius of the 1st inner circumference circle. The transmitting device characterized by things. 34. The transmission device according to claim 33, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1372 1492 2242 2362 3502 3622 6472 7912 8362 10252
3775 4732 6682 7942 9712 10162 10501 10343 10852 11184
1086 2482 2812 2932 5550 5602 6807 6862 8433 10042
1282 2844 5543 6147 7492 8122 8842 10282 10582 11573
682 986 2274 5780 5872 6595 7712 7674 7972 10828
1552 3000 5218 5182 5423 5635 7528 8756 9742 10553
473 2431 4224 4952 4762 6542 7413 8905 9446 11242
1262 1582 1793 3865 4590 4852 7854 8032 10137 11433
1109 1225 2302 3382 4232 6352 7312 8637 9757 10134
1922 4882 4972 5307 5610 7913 9204 10372 10860 11582
1111 2123 3833 4711 6238 6353 7102 8260 8872 11512
563 2003 3988 3748 3832 6515 7105 8550 10588 10617
689 1102 1735 2724 3023 4135 5309 7026 8334 9532
1384 1882 3594 4385 5784 9832 10752 11064 11274 11393
1316 1373 2040 4287 5483 6239 8878 9745 10855 11454
5243 7344 7493
1710 3597 11007
3472 6323 10974
1649 3082 5812
6444 9481 9809
1134 3352 9502
4553 8782 10972
4462 7073 8814
4781 10023 9989
2303 5754 6262
3055 5513 7162
3053 8337 9952
4012 4853 7015
3685 4583 10709
4588 5184 5242
3952 4288 7884
3112 5303 11152
803 5999 9144
688 1734 3202
2363 9412 9862
3052 7223 7794
8453 9954 11572
562 5093 9172
4709 5693 10095
5752 8573 11004
2244 4403 8452
4258 9442 9534
3263 5157 10919
7553 8932 11488
1402 3683 4644
3353 6684 8062
2093 8002 10164
2820 7432 7824
5363 6804 9232
3203 7734 10167
8518 9085 9052
2723 2995 9802
3328 9112 10614
3474 5046 8583
653 7137 7434
1294 6059 11484
1224 1343 1912
2184 4253 8512
1764 6474 8367
4915 6237 7914
1073 10494 11182
2453 2997 3292
4468 6954 10497
5964 6273 7252
3773 8572 8664
2008 2097 2064
4858 4942 8939
623 4764 8392
2760 6983 10192
982 2573 2694
1732 3743 9024
6712 9332 11223
1252 11363 11544
4312 6365 8662
3303 6925 11135
2753 6811 7225
4314 10823 11062
3448 3924 9562
5453 7704 9622
742 6628 7174
867 833 5632
6481 6717 11373
2452 7583 9324
2640 7222 8902
6173 9352 10889
1222 1522 7582
5758 6234 11452
2100 7020 10822
2633 4792 8214
A transmitting device comprising: A transmission method in which at least one error correction code is encoded, and 32APSK modulation is performed to transmit digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 89/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.97 times the radius of the first inner circumference circle,
The radius of the perimeter circle is 5.57 times the radius of the 1st inner circumference circle. The transmission method characterized by things. 36. The transmission method according to claim 35, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1372 1492 2242 2362 3502 3622 6472 7912 8362 10252
3775 4732 6682 7942 9712 10162 10501 10343 10852 11184
1086 2482 2812 2932 5550 5602 6807 6862 8433 10042
1282 2844 5543 6147 7492 8122 8842 10282 10582 11573
682 986 2274 5780 5872 6595 7712 7674 7972 10828
1552 3000 5218 5182 5423 5635 7528 8756 9742 10553
473 2431 4224 4952 4762 6542 7413 8905 9446 11242
1262 1582 1793 3865 4590 4852 7854 8032 10137 11433
1109 1225 2302 3382 4232 6352 7312 8637 9757 10134
1922 4882 4972 5307 5610 7913 9204 10372 10860 11582
1111 2123 3833 4711 6238 6353 7102 8260 8872 11512
563 2003 3988 3748 3832 6515 7105 8550 10588 10617
689 1102 1735 2724 3023 4135 5309 7026 8334 9532
1384 1882 3594 4385 5784 9832 10752 11064 11274 11393
1316 1373 2040 4287 5483 6239 8878 9745 10855 11454
5243 7344 7493
1710 3597 11007
3472 6323 10974
1649 3082 5812
6444 9481 9809
1134 3352 9502
4553 8782 10972
4462 7073 8814
4781 10023 9989
2303 5754 6262
3055 5513 7162
3053 8337 9952
4012 4853 7015
3685 4583 10709
4588 5184 5242
3952 4288 7884
3112 5303 11152
803 5999 9144
688 1734 3202
2363 9412 9862
3052 7223 7794
8453 9954 11572
562 5093 9172
4709 5693 10095
5752 8573 11004
2244 4403 8452
4258 9442 9534
3263 5157 10919
7553 8932 11488
1402 3683 4644
3353 6684 8062
2093 8002 10164
2820 7432 7824
5363 6804 9232
3203 7734 10167
8518 9085 9052
2723 2995 9802
3328 9112 10614
3474 5046 8583
653 7137 7434
1294 6059 11484
1224 1343 1912
2184 4253 8512
1764 6474 8367
4915 6237 7914
1073 10494 11182
2453 2997 3292
4468 6954 10497
5964 6273 7252
3773 8572 8664
2008 2097 2064
4858 4942 8939
623 4764 8392
2760 6983 10192
982 2573 2694
1732 3743 9024
6712 9332 11223
1252 11363 11544
4312 6365 8662
3303 6925 11135
2753 6811 7225
4314 10823 11062
3448 3924 9562
5453 7704 9622
742 6628 7174
867 833 5632
6481 6717 11373
2452 7583 9324
2640 7222 8902
6173 9352 10889
1222 1522 7582
5758 6234 11452
2100 7020 10822
2633 4792 8214
A transmission method characterized by comprising: A transmission device that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data,
Error correction coding means for performing error correction coding with a code having a coding rate of 97/120,
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.73 times the radius of the first inner circumference circle,
The radius of the perimeter circle is 5.05 times the radius of the 1st inner circumference circle. The transmitting device characterized by things. The transmission device according to claim 37, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1215 1303 1606 1628 1804 2200 2244 5522 8475 8514
1364 2122 3569 4163 4554 4906 5418 4109 7150 8250
1043 1220 2916 4604 4827 6094 6492 6996 7527 8275
1134 2530 4052 3072 6060 5711 6170 6210 6938 8409
1321 1672 2073 2426 3481 4480 7678 7421 7835 8519
1598 1611 2200 2024 4938 5106 5216 6434 7750 8011
1932 1677 2800 3345 5811 6161 7132 7326 7713 7524
1855 1084 5315 5399 5846 6047 6497 7567 8414 7907
1262 3747 4097 5788 5733 6109 6832 6976 8437 8489
902 2082 1986 2479 2926 3666 4527 6857 8145 8522
1067 2848 4332 4822 4603 4759 5250 6182 6296 7900
2465 4449 4402
3939 5505 8147
4444 5346 7062
2046 3235 4116
2427 4335 5033
2118 4322 7480
819 1277 8343
3834 5128 6248
1877 2377 2513
2179 5632 8492
3332 7656 7925
930 2332 6424
804 6056 7350
2757 6645 7174
3547 5232 6940
2229 5493 7943
2008 2794 2884
2135 3158 3874
1149 2883 8010
4423 4445 8379
688 3036 4011
3272 3882 5414
890 1722 3239
4453 5638 7806
2730 4847 5588
1240 3058 7788
4533 6798 6954
3037 6715 7866
871 3640 6426
2797 8097 8421
1830 3549 3762
3786 3938 4229
3702 4752 7722
748 1023 7568
2150 2136 2913
3307 8301 8580
1543 5172 6956
684 6249 7876
6030 7041 7634
2048 2597 5109
2795 4555 6842
3306 4050 5214
3631 4957 8272
2514 4889 8541
2784 6759 8234
3940 5084 8382
6297 6634 6580
1129 8300 8470
2420 3349 7239
1480 6475 6804
841 2028 6436
3301 5766 6116
552 5045 7539
3279 4539 7422
2333 6820 8118
2268 6870 8316
4026 5921 8013
731 1212 6167
3438 5509 6688
1282 5594 8123
1903 3791 7551
893 1440 1501
1914 4340 6628
2647 2994 5018
2786 3245 8016
1614 3743 5258
1018 5065 6293
4291 6937 7640
3636 6077 7992
1265 1586 5765
3830 4599 6716
1122 7508 8213
1567 3213 6471
4978 5544 5874
2993 4405 5786
1826 4885 5681
4664 5907 6338
2621 3542 6491
2178 6143 6974
4105 7267 7282
1232 1431 5808
947 6103 7182
3752 5173 6060
2816 3635 6073
1343 4226 7744
3241 7047 7546
A transmitting device comprising: A transmission method in which at least one error correction code is encoded, and 32APSK modulation is performed to transmit digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 97/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.73 times the radius of the first inner circumference circle,
The transmission method according to claim 1, wherein a radius of the outer circumference circle is 5.05 times a radius of the first inner circumference circle. 40. The transmission method according to claim 39, comprising:
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
1215 1303 1606 1628 1804 2200 2244 5522 8475 8514
1364 2122 3569 4163 4554 4906 5418 4109 7150 8250
1043 1220 2916 4604 4827 6094 6492 6996 7527 8275
1134 2530 4052 3072 6060 5711 6170 6210 6938 8409
1321 1672 2073 2426 3481 4480 7678 7421 7835 8519
1598 1611 2200 2024 4938 5106 5216 6434 7750 8011
1932 1677 2800 3345 5811 6161 7132 7326 7713 7524
1855 1084 5315 5399 5846 6047 6497 7567 8414 7907
1262 3747 4097 5788 5733 6109 6832 6976 8437 8489
902 2082 1986 2479 2926 3666 4527 6857 8145 8522
1067 2848 4332 4822 4603 4759 5250 6182 6296 7900
2465 4449 4402
3939 5505 8147
4444 5346 7062
2046 3235 4116
2427 4335 5033
2118 4322 7480
819 1277 8343
3834 5128 6248
1877 2377 2513
2179 5632 8492
3332 7656 7925
930 2332 6424
804 6056 7350
2757 6645 7174
3547 5232 6940
2229 5493 7943
2008 2794 2884
2135 3158 3874
1149 2883 8010
4423 4445 8379
688 3036 4011
3272 3882 5414
890 1722 3239
4453 5638 7806
2730 4847 5588
1240 3058 7788
4533 6798 6954
3037 6715 7866
871 3640 6426
2797 8097 8421
1830 3549 3762
3786 3938 4229
3702 4752 7722
748 1023 7568
2150 2136 2913
3307 8301 8580
1543 5172 6956
684 6249 7876
6030 7041 7634
2048 2597 5109
2795 4555 6842
3306 4050 5214
3631 4957 8272
2514 4889 8541
2784 6759 8234
3940 5084 8382
6297 6634 6580
1129 8300 8470
2420 3349 7239
1480 6475 6804
841 2028 6436
3301 5766 6116
552 5045 7539
3279 4539 7422
2333 6820 8118
2268 6870 8316
4026 5921 8013
731 1212 6167
3438 5509 6688
1282 5594 8123
1903 3791 7551
893 1440 1501
1914 4340 6628
2647 2994 5018
2786 3245 8016
1614 3743 5258
1018 5065 6293
4291 6937 7640
3636 6077 7992
1265 1586 5765
3830 4599 6716
1122 7508 8213
1567 3213 6471
4978 5544 5874
2993 4405 5786
1826 4885 5681
4664 5907 6338
2621 3542 6491
2178 6143 6974
4105 7267 7282
1232 1431 5808
947 6103 7182
3752 5173 6060
2816 3635 6073
1343 4226 7744
3241 7047 7546
A transmission method characterized by comprising: A transmission device that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 101/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.67 times the radius of the first inner circumference circle,
The radius of the outer circumference circle is 4.80 times the radius of the first inner circumference circle. The transmission device according to claim 41, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
836 3140 3644 3968 4238 5858 5930 6470 6542 6866
1183 2385 3689 3248 3680 4112 4616 4868 5210 6344
494 1179 2908 3158 3715 5432 5426 5617 6998 6600
1325 2485 3466 5228 4605 5244 6102 6286 5107 6955
880 2704 3752 4204 4493 5403 6368 6308 5265 6950
538 1209 1201 1330 2205 2887 2931 3016 3613 6036
1699 2414 2441 1307 3886 4716 5761 6712 6817 5491
1299 1143 1974 2683 3880 4554 4851 5714 5811 6896
913 2626 4797 2922 3181 4324 5023 5936 6717 2455
2620 2983 3267 3036 4460 5026 5366 6428 6442 6644
2115 3862 3472 4369 4889 6431 6995 6743 7086 6093
3375 5631 7082
972 1348 5296
1001 1365 1684
1396 4861 4841
5103 5607 6092
1089 2876 5303
2731 4742 5733
1214 1594 5145
2046 4078 5566
3252 6375 6528
2138 2942 6892
983 3759 5216
1402 1888 4552
4033 6110 6794
2510 4725 6459
1188 3936 6868
430 900 3284
651 6083 6115
2973 4458 4475
2592 3141 5737
2194 5620 6060
3785 4332 4562
1652 4412 4736
778 2943 7104
695 2619 6133
2104 3650 6099
1680 6920 6970
1526 2109 3268
732 1075 3914
2958 3393 5055
1858 6297 6926
3673 3667 6852
3445 5500 6503
787 3071 6512
477 712 2852
914 2121 2898
2187 3251 3769
391 4383 6766
1338 1713 5858
1182 1905 2622
459 685 2150
2048 4077 4976
389 2360 2858
482 3852 5918
1666 4881 6507
1304 2709 5788
578 5561 6276
1938 2456 4323
929 1559 5859
1941 3070 3266
2710 3820 4452
4295 5300 5717
841 1845 4461
2087 3257 5057
3199 4322 4796
3992 4258 4639
3547 3786 5040
1099 3646 5320
1199 1593 2116
1835 6078 6693
1360 4214 5686
1655 2661 5662
3478 5227 5993
3201 4482 5066
659 1701 6062
4720 5070 6264
2408 4415 6264
2259 5124 7054
5558 5810 5863
3205 4959 6353
1305 3467 6132
639 4348 5894
567 3050 4065
1082 2497 4129
2006 5420 5247
1358 1600 3883
1060 1136 2716
1620 2407 6841
1899 6146 6386
1492 1792 4762
606 1648 4064
679 2534 7084
4403 6195 6601
3704 4840 5560
612 2406 2755
523 5545 6783
2296 3774 6996
1413 4713 7033
2386 3119 5283
3291 4930 6981
A transmitting device comprising: A transmission method in which at least one error correction code is encoded, and 32APSK modulation is performed to transmit digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 101/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.67 times the radius of the first inner circumference circle,
The radius of the outer circumference circle is 4.80 times the radius of the first inner circumference circle. The transmission method according to claim 43, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
836 3140 3644 3968 4238 5858 5930 6470 6542 6866
1183 2385 3689 3248 3680 4112 4616 4868 5210 6344
494 1179 2908 3158 3715 5432 5426 5617 6998 6600
1325 2485 3466 5228 4605 5244 6102 6286 5107 6955
880 2704 3752 4204 4493 5403 6368 6308 5265 6950
538 1209 1201 1330 2205 2887 2931 3016 3613 6036
1699 2414 2441 1307 3886 4716 5761 6712 6817 5491
1299 1143 1974 2683 3880 4554 4851 5714 5811 6896
913 2626 4797 2922 3181 4324 5023 5936 6717 2455
2620 2983 3267 3036 4460 5026 5366 6428 6442 6644
2115 3862 3472 4369 4889 6431 6995 6743 7086 6093
3375 5631 7082
972 1348 5296
1001 1365 1684
1396 4861 4841
5103 5607 6092
1089 2876 5303
2731 4742 5733
1214 1594 5145
2046 4078 5566
3252 6375 6528
2138 2942 6892
983 3759 5216
1402 1888 4552
4033 6110 6794
2510 4725 6459
1188 3936 6868
430 900 3284
651 6083 6115
2973 4458 4475
2592 3141 5737
2194 5620 6060
3785 4332 4562
1652 4412 4736
778 2943 7104
695 2619 6133
2104 3650 6099
1680 6920 6970
1526 2109 3268
732 1075 3914
2958 3393 5055
1858 6297 6926
3673 3667 6852
3445 5500 6503
787 3071 6512
477 712 2852
914 2121 2898
2187 3251 3769
391 4383 6766
1338 1713 5858
1182 1905 2622
459 685 2150
2048 4077 4976
389 2360 2858
482 3852 5918
1666 4881 6507
1304 2709 5788
578 5561 6276
1938 2456 4323
929 1559 5859
1941 3070 3266
2710 3820 4452
4295 5300 5717
841 1845 4461
2087 3257 5057
3199 4322 4796
3992 4258 4639
3547 3786 5040
1099 3646 5320
1199 1593 2116
1835 6078 6693
1360 4214 5686
1655 2661 5662
3478 5227 5993
3201 4482 5066
659 1701 6062
4720 5070 6264
2408 4415 6264
2259 5124 7054
5558 5810 5863
3205 4959 6353
1305 3467 6132
639 4348 5894
567 3050 4065
1082 2497 4129
2006 5420 5247
1358 1600 3883
1060 1136 2716
1620 2407 6841
1899 6146 6386
1492 1792 4762
606 1648 4064
679 2534 7084
4403 6195 6601
3704 4840 5560
612 2406 2755
523 5545 6783
2296 3774 6996
1413 4713 7033
2386 3119 5283
3291 4930 6981
A transmission method characterized by comprising: A transmission device that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data,
Error correction coding means for performing error correction coding with a code having a coding rate of 7/8,
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.76 times the radius of the first inner circumference circle,
The radius of the outer circumference circle is 4.82 times the radius of the first inner circumference circle. The transmission device according to claim 45, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
93 1986 2504 2631 2810 2877 3763 4354 4824
76 385 1193 1434 3481 3979 4379 4436 4587
160 350 911 964 1180 1428 2212 3465 4738
130 389 620 865 1966 1999 2315 3714 4392
139 2226 2900 2932 3167 3550 4630 5155 5271
163 519 902 1789 2809 3731 3759 5270 5287
390 2117 2436 2877 3378 3731 4882 5205 5463
2131 3304 3681 4382 4462 4594 4808 4929 4985
592 676 3162 3391 3817 4392 4847 5492 5513
640 1392 1583 1742 2649 3827 3918 4029 4319
479 669 1097 1380 2222 2538 2809 3727 3750
1214 1592 2559 3574 3966 4108 4284 4646 4930
205 641 1947 2048 2066 2589 3277 3999 4869
424 662 1243 1414 1873 1943 2212 3271 3493
993 1122 1453 2626 3469 3568 3981 4930 5392
892 928 3979
90 2273 4406
1890 2999 3206
2411 4980 5104
712 3958 4361
497 1159 3611
3145 4022 4896
1120 2568 3522
132 888 980
934 1275 2660
2797 3622 5588
2797 4621 5312
4070 4922 5171
851 2474 3190
57 2355 2527
3254 3519 5061
484 1948 4085
405 1895 5547
4288 4338 5337
1695 4773 5356
810 2881 5523
1077 2731 3000
796 3631 5170
1028 1679 3049
1138 3176 3866
2928 3499 4448
1079 1322 4875
1651 2305 3871
3223 3792 5541
833 2418 5504
1918 3292 5534
2953 4430 5553
1487 4715 4964
2396 2686 3438
4201 4519 5427
179 1193 3181
848 987 2822
1136 2399 4467
2909 3650 4553
129 1325 5190
3046 5252 5403
4120 4290 4687
150 3304 5605
16 4685 5478
2910 3667 4453
2471 2565 4228
1694 4247 4900
2116 4092 4412
3003 4733 5351
1377 1432 5404
1024 3100 3224
681 2154 5526
1844 1985 4974
330 2520 3746
2573 3454 5496
2088 4939 5384
1072 3111 3171
3672 3858 5543
2211 5080 5325
673 1822 2238
2003 2825 4007
2880 3302 4719
2080 2877 5362
402 756 2132
2318 2523 5597
241 1344 5488
3164 3215 5465
24 1943 2458
1704 5151 5608
1071 2514 3944
645 2392 3526
1484 1586 5052
3551 4029 5016
891 2493 5049
1686 3183 5438
3366 3538 3698
2033 3490 3792
1366 5137 5476
635 2040 5395
1678 1694 4675
268 849 1655
1400 2723 5093
363 1781 5053
1925 2804 2956
505 1267 2720
1880 2601 4547
2258 3386 5337
2094 5123 5159
1881 2988 3881
201 690 1016
A transmitting device comprising: A transmission method in which at least one error correction code is encoded, and 32APSK modulation is performed to transmit digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 7/8,
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.76 times the radius of the first inner circumference circle,
The transmission method according to claim 1, wherein a radius of the outer circumference circle is 4.82 times a radius of the first inner circumference circle. The transmission method according to claim 47, wherein
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
93 1986 2504 2631 2810 2877 3763 4354 4824
76 385 1193 1434 3481 3979 4379 4436 4587
160 350 911 964 1180 1428 2212 3465 4738
130 389 620 865 1966 1999 2315 3714 4392
139 2226 2900 2932 3167 3550 4630 5155 5271
163 519 902 1789 2809 3731 3759 5270 5287
390 2117 2436 2877 3378 3731 4882 5205 5463
2131 3304 3681 4382 4462 4594 4808 4929 4985
592 676 3162 3391 3817 4392 4847 5492 5513
640 1392 1583 1742 2649 3827 3918 4029 4319
479 669 1097 1380 2222 2538 2809 3727 3750
1214 1592 2559 3574 3966 4108 4284 4646 4930
205 641 1947 2048 2066 2589 3277 3999 4869
424 662 1243 1414 1873 1943 2212 3271 3493
993 1122 1453 2626 3469 3568 3981 4930 5392
892 928 3979
90 2273 4406
1890 2999 3206
2411 4980 5104
712 3958 4361
497 1159 3611
3145 4022 4896
1120 2568 3522
132 888 980
934 1275 2660
2797 3622 5588
2797 4621 5312
4070 4922 5171
851 2474 3190
57 2355 2527
3254 3519 5061
484 1948 4085
405 1895 5547
4288 4338 5337
1695 4773 5356
810 2881 5523
1077 2731 3000
796 3631 5170
1028 1679 3049
1138 3176 3866
2928 3499 4448
1079 1322 4875
1651 2305 3871
3223 3792 5541
833 2418 5504
1918 3292 5534
2953 4430 5553
1487 4715 4964
2396 2686 3438
4201 4519 5427
179 1193 3181
848 987 2822
1136 2399 4467
2909 3650 4553
129 1325 5190
3046 5252 5403
4120 4290 4687
150 3304 5605
16 4685 5478
2910 3667 4453
2471 2565 4228
1694 4247 4900
2116 4092 4412
3003 4733 5351
1377 1432 5404
1024 3100 3224
681 2154 5526
1844 1985 4974
330 2520 3746
2573 3454 5496
2088 4939 5384
1072 3111 3171
3672 3858 5543
2211 5080 5325
673 1822 2238
2003 2825 4007
2880 3302 4719
2080 2877 5362
402 756 2132
2318 2523 5597
241 1344 5488
3164 3215 5465
24 1943 2458
1704 5151 5608
1071 2514 3944
645 2392 3526
1484 1586 5052
3551 4029 5016
891 2493 5049
1686 3183 5438
3366 3538 3698
2033 3490 3792
1366 5137 5476
635 2040 5395
1678 1694 4675
268 849 1655
1400 2723 5093
363 1781 5053
1925 2804 2956
505 1267 2720
1880 2601 4547
2258 3386 5337
2094 5123 5159
1881 2988 3881
201 690 1016
A transmission method characterized by comprising: A transmission device that performs encoding using at least one error correction code, performs 32APSK modulation, and transmits digital data,
Comprising error correction coding means for performing error correction coding with a code having a coding rate of 109/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.69 times the radius of the first inner circumference circle,
The radius of the above-mentioned circumference circle is 4.66 times the radius of the above-mentioned 1st circumference circle. The transmitting device characterized by things. 50. The transmission device according to claim 49, wherein
The error correction encoding means performs error correction encoding by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
220 484 3688 3808
880 1335 2704 4106
544 556 2092 2416
1504 1660 2152
1336 3700 3891
1564 2320 4024
1168 2644 4060
1958 2056 3712
938 2992 3004
3100 3459 4047
1045 1576 3050
278 1826 2235
1000 1984 3255
1178 3662 3724
172 2907 3532
160 2380 3064
628 1116 1790
579 2212 3328
302 435 1264
1479 1792 3796
1300 3591 3901
820 1143 3856
724 1093 2968
1106 3099 3604
255 2164 2656
951 1684 3472
592 2027 2308
2473 2487 3887
1024 1288 2269
736 1851 3172
1166 2436 2547
374 1312 2848
854 1924 3304
456 1108 1372
950 2091 2799
915 1708 1970
304 1059 3804
292 2030 2620
841 1240 1827
1492 2376 3160
546 976 1813
2127 2786 3972
604 2871 3652
471 2822 3040
290 640 3544
2282 2824 3784
1204 3500 4055
699 1743 3364
527 1599 2978
1250 3748 4074
316 373 2692
3220 3324 3490
925 3431 3736
1934 2007 3904
734 1971 2584
2055 3279 3964
1551 1672 4108
1596 2488 2560
1518 3614 3916
2607 3013 4012
663 2942 3940
1659 3267 3730
1740 2559 2752
496 1539 1800
2437 2798 4094
817 1420 3649
1480 1863 2200
2031 2187 2884
274 2716 3049
1491 2960 3232
1899 2523 3316
844 1655 2428
2339 2474 3919
388 2869 3952
999 2139 3508
1180 2115 2668
2379 3520 3589
564 2728 3903
616 1153 3196
697 759 3388
975 1864 3347
711 1418 2307
405 827 1712
1466 3107 3396
2691 3480 3992
952 2173 2605
519 543 1744
1146 1931 2812
1702 2919 3411
687 1593 1634
3384 3460 3528
856 2232 3170
195 411 1443
2522 3190 3988
1406 2377 2464
387 3202 3976
1320 2248 2795
243 2087 2367
448 1227 3698
1478 2999 3208
2546 2619 2632
196 1107 2272
2943 3178 3855
1252 1742 3551
364 591 3076
807 1404 1900
1192 3239 3579
890 2068 3650
793 1850 4048
A transmitting device comprising: A transmission method in which at least one error correction code is encoded, and 32APSK modulation is performed to transmit digital data.
An error correction coding step for performing error correction coding with a code having a coding rate of 109/120;
The 32 APSK modulation signal points are 4 signal points on the first inner circle, 12 signal points on the second inner circle having a radius larger than the first inner circle, and on the outer circle. Of 16 signal points,
The radius of the second inner circumference circle is 2.69 times the radius of the first inner circumference circle,
The radius of the outer circumference circle is 4.66 times the radius of the first inner circumference circle. 52. The transmission method according to claim 51, comprising:
In the error correction encoding step, error correction encoding is performed by an LDPC code having a code length of 44880 bits,
The parity check matrix of the LDPC code is determined by a parity check matrix initial value table that represents the position of one element of the partial matrix corresponding to the information length according to the coding rate of the parity check matrix for each 374 columns. 1 elements are arranged in a cycle of 374 columns in the column direction,
The parity check matrix initial value table is:
220 484 3688 3808
880 1335 2704 4106
544 556 2092 2416
1504 1660 2152
1336 3700 3891
1564 2320 4024
1168 2644 4060
1958 2056 3712
938 2992 3004
3100 3459 4047
1045 1576 3050
278 1826 2235
1000 1984 3255
1178 3662 3724
172 2907 3532
160 2380 3064
628 1116 1790
579 2212 3328
302 435 1264
1479 1792 3796
1300 3591 3901
820 1143 3856
724 1093 2968
1106 3099 3604
255 2164 2656
951 1684 3472
592 2027 2308
2473 2487 3887
1024 1288 2269
736 1851 3172
1166 2436 2547
374 1312 2848
854 1924 3304
456 1108 1372
950 2091 2799
915 1708 1970
304 1059 3804
292 2030 2620
841 1240 1827
1492 2376 3160
546 976 1813
2127 2786 3972
604 2871 3652
471 2822 3040
290 640 3544
2282 2824 3784
1204 3500 4055
699 1743 3364
527 1599 2978
1250 3748 4074
316 373 2692
3220 3324 3490
925 3431 3736
1934 2007 3904
734 1971 2584
2055 3279 3964
1551 1672 4108
1596 2488 2560
1518 3614 3916
2607 3013 4012
663 2942 3940
1659 3267 3730
1740 2559 2752
496 1539 1800
2437 2798 4094
817 1420 3649
1480 1863 2200
2031 2187 2884
274 2716 3049
1491 2960 3232
1899 2523 3316
844 1655 2428
2339 2474 3919
388 2869 3952
999 2139 3508
1180 2115 2668
2379 3520 3589
564 2728 3903
616 1153 3196
697 759 3388
975 1864 3347
711 1418 2307
405 827 1712
1466 3107 3396
2691 3480 3992
952 2173 2605
519 543 1744
1146 1931 2812
1702 2919 3411
687 1593 1634
3384 3460 3528
856 2232 3170
195 411 1443
2522 3190 3988
1406 2377 2464
387 3202 3976
1320 2248 2795
243 2087 2367
448 1227 3698
1478 2999 3208
2546 2619 2632
196 1107 2272
2943 3178 3855
1252 1742 3551
364 591 3076
807 1404 1900
1192 3239 3579
890 2068 3650
793 1850 4048
A transmission method characterized by comprising: Claims 1, 2, 5, 6, 9, 10, 13, 14, 17, 18, 21, 22, 25, 26, 29, 30, 33, 34, 37, 38, 41, 42, 45, 46, 49. A receiving apparatus that receives data transmitted by a transmitting apparatus according to any one of 49 and 50 based on the arrangement of the signal points. Data transmitted by the transmission device according to any one of claims 2, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46, or 50, the arrangement of the signal points, and the A receiving apparatus that performs decoding based on a parity check matrix.

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