CN105376028A - Interleaving and mapping method and de-interleaving and de-mapping method of LDPC code word - Google Patents

Interleaving and mapping method and de-interleaving and de-mapping method of LDPC code word Download PDF

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Publication number
CN105376028A
CN105376028A CN201410439090.4A CN201410439090A CN105376028A CN 105376028 A CN105376028 A CN 105376028A CN 201410439090 A CN201410439090 A CN 201410439090A CN 105376028 A CN105376028 A CN 105376028A
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China
Prior art keywords
bit
ldpc code
code word
value data
time
Prior art date
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Application number
CN201410439090.4A
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Chinese (zh)
Inventor
张文军
郭序峰
赵杰
杨帆
尧勇仕
史毅俊
徐胤
徐洪亮
何大治
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Shanghai National Engineering Research Center of Digital Television Co Ltd
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Shanghai National Engineering Research Center of Digital Television Co Ltd
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Priority to CN201410439090.4A priority Critical patent/CN105376028A/en
Publication of CN105376028A publication Critical patent/CN105376028A/en
Withdrawn legal-status Critical Current

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Abstract

The invention provides an interleaving and mapping method and a de-interleaving and de-mapping method of LDPC code word. The method includes: performing the first bit interleaving of a verification portion in the LDPC code word and obtaining a verification bit stream; splicing an information bit portion in the LDPC code word and the verification bit stream to form the LDPC code word after the first bit interleaving; dividing the LDPC code word after the first bit interleaving into a plurality of continuous bit sub-blocks according to a predetermined length, transforming the arranging sequence of the bit sub-blocks according to a corresponding bit transformation pattern, and forming the LDPC code word after the second bit interleaving; writing in the LDPC code word after the second bit interleaving according to the column sequence and reading out and obtaining the LDPC code word after the third bit interleaving according to the row sequence; and performing constellation mapping of the LDPC code word after the third bit interleaving according to a constellation diagram in order to obtain a symbol stream. The interleaving mapping and de-interleaving and de-mapping methods are selected according to different LDPC code lists, and the system performance can be better enhanced.

Description

The intertexture of LDPC code word and mapping method and deinterleaving de-mapping method
Technical field
The present invention relates to digital television techniques field, particularly a kind of intertexture of LDPC code word and mapping method and deinterleaving de-mapping method.
Background technology
In existing broadcast communication standard, LDPC coding, Bit Interleave and constellation mapping are code modulation modes the most common.In different emission systems, LDPC coding, Bit Interleave and constellation mapping all need independent design, and combined debugging, to obtain best channel performance.Therefore, how forming Bit Interleave targetedly for specific LDPC code word and constellation mapping mode, is a technical barrier of this area.
Summary of the invention
The problem that the present invention solves cannot form Bit Interleave targetedly for specific LDPC code word and constellation mapping mode in prior art.
For solving the problem, embodiments providing a kind of intertexture and mapping method of LDPC code word, comprising the steps: the check part in described LDPC code word to carry out first time Bit Interleave to obtain check bit stream; Information bit part in described LDPC code word and described check bit stream are spliced into the LDPC code word after first time Bit Interleave; LDPC code word after described first time Bit Interleave is divided into the multiple sub-blocks of bits of continuous print by predetermined length, and puts in order the LDPC code word after forming second time Bit Interleave according to sub-blocks of bits described in corresponding bit exchange pattern change; LDPC code word column major order write memory space after described second time Bit Interleave is also sequentially read the LDPC code word after obtaining third time Bit Interleave by row in this memory space; Constellation mapping is carried out to obtain symbol stream according to corresponding planisphere to the LDPC code word after described third time Bit Interleave.
The embodiment of the present invention additionally provides a kind of deinterleaving de-mapping method of LDPC code word, comprises the steps: to carry out soft demapping process to obtain bit soft value data to symbol stream soft value data according to corresponding planisphere; Wherein said symbol stream soft value data are the symbol stream that interlace map method that receiving terminal receives LDPC code word described above obtains; Described bit soft value data are sequentially written in memory space by row and column major order reads to obtain first time than the bit soft value data after deinterleave in this memory space; Described first time is divided into the multiple bit soft value data sub-block of continuous print than the bit soft value data after deinterleave by predetermined length, and according to bit soft value data sub-block described in corresponding bit exchange pattern change put in order form second time than the bit soft value data after deinterleave; Described second time is carried out third time than deinterleave to obtain third time than the bit soft value data after deinterleave than the bit soft value data of the check part corresponded in LDPC code word in the bit soft value data after deinterleave; Described second time is spliced into bit soft value data flow with described third time than the bit soft value data after deinterleave than in the bit soft value data after deinterleave; LDPC decoding process is carried out to obtain decoded bitstream data to described bit soft value data flow.
Compared with prior art, technical solution of the present invention has the following advantages:
Corresponding interlace map and deinterleaving de-mapping method is selected better to be promoted to make systematic function for specific LDPC code table.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the interlace map method of a kind of LDPC code word of the present invention;
Fig. 2 is the schematic flow sheet of the embodiment of the deinterleaving de-mapping method of a kind of LDPC code word of the present invention;
Fig. 3 be in the interlace map method of a kind of LDPC code word of the present invention to the check part in LDPC code word carry out first time Bit Interleave to obtain the schematic diagram of check bit stream;
Fig. 4 is the schematic diagram put in order according to sub-blocks of bits described in bit exchange pattern change in the interlace map method of a kind of LDPC code word of the present invention.
Embodiment
Inventor finds in prior art, cannot form Bit Interleave targetedly for specific LDPC code word and constellation mapping mode.
For the problems referred to above, inventor is through research, provide a kind of interlace map method and deinterleaving de-mapping method of LDPC code word, select corresponding interlace map and deinterleaving de-mapping method better to be promoted to make systematic function for different LDPC code tables.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
In embodiments of the present invention, transmitter terminal is: first the bit stream after message sink coding, Bose-Chaudhuri-Hocquenghem Code is input to the coding that LDPC encoder carries out the LDPC code word of specific code check code length, input bit interleaver afterwards, interleaving treatment is carried out according to certain specific Bit Interleave patterning method, subsequently the data after Bit Interleave process are carried out the 1024QAM constellation mapping of corresponding code check, modulate afterwards, launch, experience channel.Receiver end is: the data after channel are carried out demodulation, and the data input De-mapping module then after demodulation, carries out 1024QAM demapping.Afterwards the bit soft value information that De-mapping module exports is input to de-interleaving block and carries out deinterleaving, output to ldpc decoder afterwards, the decoding based on specific LDPC code word is carried out to it, output bit flow of finally decoding.
As shown in Figure 1 be the schematic flow sheet of the embodiment of the interlace map method of a kind of LDPC code word of the present invention.With reference to figure 1, the interlace map method of LDPC code word comprises the steps:
Step S11: the check part in described LDPC code word is carried out first time Bit Interleave to obtain check bit stream;
Step S12: the information bit part in described LDPC code word and described check bit stream are spliced into the LDPC code word after first time Bit Interleave;
Step S13: the LDPC code word after described first time Bit Interleave is divided into the multiple sub-blocks of bits of continuous print by predetermined length, and put in order the LDPC code word after forming second time Bit Interleave according to sub-blocks of bits described in corresponding bit exchange pattern change;
Step S14: the LDPC code word column major order write memory space after described second time Bit Interleave is also sequentially read the LDPC code word after obtaining third time Bit Interleave by row in this memory space;
Step S15: constellation mapping is carried out to obtain symbol stream according to corresponding planisphere to the LDPC code word after described third time Bit Interleave.
In the present embodiment, described step S11 specifically comprises the steps: the check part column major order write memory space in described LDPC code word and sequentially reads to obtain check bit stream in this memory space by row.
Particularly, the check portion generating LDPC code word is divided and carries out Bit Interleave: check part M the bit altogether of LDPC code word, write in a memory space by row, often arrange Q bit, altogether L row, that is M=Q*L, then sequentially reads by row.Its specific implementation process is with reference to shown in figure 3.
In described step S13, the LDPC code word after described first time Bit Interleave is divided into the multiple sub-blocks of bits of continuous print by predetermined length, and wherein said predetermined length is 320.Further, according to sub-blocks of bits described in corresponding bit exchange pattern change put in order formed second time Bit Interleave after LDPC code word.Its detailed process is detailed as shown in Figure 4, in the diagram, and (m 0, m 1..., m n/320-1) be the bit exchange pattern of 320 length bits sub-blocks.
Particularly, the code length of the LDPC code word in LDPC code table is 57600, and corresponding bit exchange pattern is:
It should be noted that, in the present embodiment, each numerical value in described bit exchange pattern refers to the position without sub-blocks of bits described before bit exchange.Such as, second numerical value 142 implication in above-mentioned bit exchange pattern refers to and original after bit exchange, nowadays becomes second sub-blocks of bits without the 143rd sub-blocks of bits before bit exchange.
Corresponding planisphere is:
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1002 -0.0354-0.3530i
1003 -0.0921-0.3530i
1004 -0.2185-0.2910i
1005 -0.1602-0.2910i
1006 -0.2185-0.3530i
1007 -0.1602-0.3530i
1008 -0.4947-0.4947i
1009 -0.4264-0.4947i
1010 -0.4947-0.4264i
1011 -0.4264-0.4264i
1012 -0.2910-0.4947i
1013 -0.3530-0.4947i
1014 -0.2910-0.4264i
1015 -0.3530-0.4264i
1016 -0.4947-0.2910i
1017 -0.4264-0.2910i
1018 -0.4947-0.3530i
1019 -0.4264-0.3530i
1020 -0.2910-0.2910i
1021 -0.3530-0.2910i
1022 -0.2910-0.3530i
1023 -0.3530-0.3530i
In described step S14, such as, be the LDPC code word (the LDPC code word after second time Bit Interleave) of 57600 bits for code length, its column major order write memory space is also sequentially read by row in this memory space, wherein every row 5760 bit, totally 10 row.
Afterwards to the bitstream data (b after above-mentioned Bit Interleave 0, b 1..., b n-1), according to 1024QAM planisphere, the decimal number corresponding to every ten binary bit sequence is mapped to some constellation point, obtains symbol stream (the corresponding constellation point of each complex symbol).Such as, ten corresponding decimal numbers of bit ' 0000001101 ' of input are 13, then correspond to the constellation point of the 1.0529+0.9385i in 1024QAM planisphere, this constellation point being shown as on real number axis and axis of imaginaries, real number axis 1.0529, axis of imaginaries 0.9385.Then utilize symbol stream to carry out generation OFDM symbol at modulation module, finally launch.
In the present embodiment, described LDPC code word be to message sink coding after bit stream obtain after specific LDPC coding, wherein said specific LDPC coding can adopt prior art to realize.
Particularly, the code word of this LDPC is with L × L (L is generally 320) for sub-block size, and code table is as follows:
Table 1 code check 4/5N ldpc=19200, L × L=320 × 320, Q=36, M=11520
Its coding method is as follows:
By the bit stream after message sink coding, be split as block of information one by one, each block of information is made up of K information bit, is expressed as S=(s 0, s 1..., s k-1).By the specific LDPC coding in Fig. 1, be will according to S=(s 0, s 1..., s k-1) generate M check bit P=(p 0, p 1..., p m-1).Namely the code word Λ=(λ of N number of bit is obtained 0, λ 1..., λ n-1), wherein N=K+M.Λ can be expressed as again, Λ=(s 0, s 1..., s k-1, p 0, p 1..., p m-1).
The step of coding is:
1) initialization λ i=s i, i=0,1 ..., K-1.p j＝0，j＝0,1,...,M-1
2) to information bit λ 0, add up for the check bit of address to the first row numeral in code table, lift table 1 code check 4/5, the code table of code length 57600 is example:
p 63 = p 63 ⊕ λ 0 , p 412 = p 412 ⊕ λ 0 , p 1346 = p 1346 ⊕ λ 0 , . . . . . . , p 10690 = p 10690 ⊕ λ 0 , p 11175 = p 11175 ⊕ λ 0 .
3) for an ensuing L-1 information bit, (usual L=320), λ m, m=1,2 ...., L-1, by each information bit respectively be the school of address according to following y
Test bit to add up:
y＝{x+(mmod320)×Q}modM
Wherein, x refers to and λ 0relevant check digit address, act table 1 is example, the numeral of the first row in x and code table:
6341213461483184721632520262437844315443647515397
626565046716707778978322866595331069011175。
And wherein m is the quantity of check bit, and be also the quantity that check matrix is capable, L is the size of sub-block in check matrix, is generally 320.
Code word for table 1 is example,
Q = M L = 11520 320 = 36 .
p 99 = p 99 ⊕ λ 1 , p 448 = p 448 ⊕ λ 1 , p 1382 = p 1382 ⊕ λ 1 , . . . . . . , p 10726 = p 10726 ⊕ λ 1 , p 11211 = p 11211 ⊕ λ 1 .
4) for L information bit λ l, according to the second line number word address in code table, check bit is added up.Same for L information bit λ lan ensuing L-1 information bit, continues according to step 3) in formula check bit is added up, the at this time numeral of the second row in the x of the formula of step 3 kind and code table.
5) in like manner, for 2L, 3L, 4L ... iL ... individual information bit, according to difference the 3rd in code table, 4, 5, (i+1) L .... add up to check bit in the address of row, L-1 information bit after its information bit is then respectively according to step 3) in formula check bit is added up, note the x of the formula of at this time step 3 kind corresponding be row in code table corresponding to a current i-th L information bit, L-1 bit after such as the i-th L information bit, its applying step 3) in formula time corresponding x address be (i+1) in code table OK.
6) step 5 is finished) after, be done as follows:
wherein i=1,2,3 ..., M-1.
The embodiment of the present invention additionally provides a kind of deinterleaving de-mapping method of LDPC code word.As shown in Figure 2 be the schematic flow sheet of the embodiment of the deinterleaving de-mapping method of a kind of LDPC code word of the present invention.With reference to figure 2, the deinterleaving de-mapping method of LDPC code word comprises the steps:
Step S21: soft demapping process is carried out to obtain bit soft value data according to corresponding planisphere to symbol stream soft value data;
Step S22: described bit soft value data are sequentially written in memory space by row and column major order reads to obtain first time than the bit soft value data after deinterleave in this memory space;
Step S23: described first time is divided into the multiple bit soft value data sub-block of continuous print than the bit soft value data after deinterleave by predetermined length, and according to bit soft value data sub-block described in corresponding bit exchange pattern change put in order form second time than the bit soft value data after deinterleave;
Step S24: described second time is carried out third time than deinterleave to obtain third time than the bit soft value data after deinterleave than the bit soft value data of the check part corresponded in LDPC code word in the bit soft value data after deinterleave;
Step S25: described second time is spliced into bit soft value data flow with described third time than the bit soft value data after deinterleave than in the bit soft value data after deinterleave;
Step S26: LDPC decoding process is carried out to obtain decoded bitstream data to described bit soft value data flow.
In the present embodiment, described step S24 specifically comprises: described second time is sequentially written in memory space by row than the bit soft value data of the check part corresponded in LDPC code word in the bit soft value data after deinterleave and column major order reads to obtain third time than the bit soft value data after deinterleave in this memory space.
By the coding of above-mentioned LDPC, intertexture and modulation system, the thresholding of system under awgn channel can be made to reach 25.62, and the thresholding under rayleigh fading channel reaches 28.94, effectively can increase coverage rate.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection range of technical solution of the present invention.

Claims (7)

1. an interlace map method for LDPC code word, is characterized in that, comprise the steps:
Check part in described LDPC code word is carried out first time Bit Interleave to obtain check bit stream;
Information bit part in described LDPC code word and described check bit stream are spliced into the LDPC code word after first time Bit Interleave;
LDPC code word after described first time Bit Interleave is divided into the multiple sub-blocks of bits of continuous print by predetermined length, and puts in order the LDPC code word after forming second time Bit Interleave according to sub-blocks of bits described in corresponding bit exchange pattern change;
LDPC code word column major order write memory space after described second time Bit Interleave is also sequentially read by row in this memory space, obtains the LDPC code word after third time Bit Interleave;
Constellation mapping is carried out to obtain symbol stream according to corresponding planisphere to the LDPC code word after described third time Bit Interleave; Wherein, described bit exchange pattern and described planisphere are all corresponding from the LDPC code table of different code check.
2. the interlace map method of LDPC code word as claimed in claim 1, is characterized in that, the check part in described LDPC code word is carried out first time Bit Interleave and comprises to obtain check bit stream:
Check part column major order write memory space in described LDPC code word also is sequentially read to obtain check bit stream by row in this memory space.
3. the interlace map method of LDPC code word as claimed in claim 1, it is characterized in that, described predetermined length is 320 bits.
4. the interlace map method of LDPC code word as claimed in claim 1, is characterized in that, in described LDPC code table, the code length of LDPC code word is 57600 bits, code check is 4/5; Code table is:
Corresponding bit exchange pattern is:
Corresponding planisphere is:
Constellation point Complex symbol 0 1.3675+1.3675i 1 1.1917+1.3675i 2 1.3675+1.1917i 3 1.1917+1.1917i 4 0.9385+1.3675i 5 1.0529+1.3675i 6 0.9385+1.1917i 7 1.0529+1.1917i 8 1.3675+0.9385i 9 1.1917+0.9385i 10 1.3675+1.0529i
11 1.1917+1.0529i 12 0.9385+0.9385i 13 1.0529+0.9385i 14 0.9385+1.0529i 15 1.0529+1.0529i 16 0.5763+1.3675i 17 0.6531+1.3675i 18 0.5763+1.1917i 19 0.6531+1.1917i 20 0.8324+1.3675i 21 0.7417+1.3675i 22 0.8324+1.1917i 23 0.7417+1.1917i 24 0.5763+0.9385i 25 0.6531+0.9385i 26 0.5763+1.0529i 27 0.6531+1.0529i 28 0.8324+0.9385i 29 0.7417+0.9385i 30 0.8324+1.0529i 31 0.7417+1.0529i
32 1.3675+0.5763i 33 1.1917+0.5763i 34 1.3675+0.6531i 35 1.1917+0.6531i 36 0.9385+0.5763i 37 1.0529+0.5763i 38 0.9385+0.6531i 39 1.0529+0.6531i 40 1.3675+0.8324i 41 1.1917+0.8324i 42 1.3675+0.7417i 43 1.1917+0.7417i 44 0.9385+0.8324i 45 1.0529+0.8324i 46 0.9385+0.7417i 47 1.0529+0.7417i 48 0.5763+0.5763i 49 0.6531+0.5763i 50 0.5763+0.6531i 51 0.6531+0.6531i 52 0.8324+0.5763i
53 0.7417+0.5763i 54 0.8324+0.6531i 55 0.7417+0.6531i 56 0.5763+0.8324i 57 0.6531+0.8324i 58 0.5763+0.7417i 59 0.6531+0.7417i 60 0.8324+0.8324i 61 0.7417+0.8324i 62 0.8324+0.7417i 63 0.7417+0.7417i 64 0.0354+1.3675i 65 0.0921+1.3675i 66 0.0354+1.1917i 67 0.0921+1.1917i 68 0.2185+1.3675i 69 0.1602+1.3675i 70 0.2185+1.1917i 71 0.1602+1.1917i 72 0.0354+0.9385i 73 0.0921+0.9385i
74 0.0354+1.0529i 75 0.0921+1.0529i 76 0.2185+0.9385i 77 0.1602+0.9385i 78 0.2185+1.0529i 79 0.1602+1.0529i 80 0.4947+1.3675i 81 0.4264+1.3675i 82 0.4947+1.1917i 83 0.4264+1.1917i 84 0.2910+1.3675i 85 0.3530+1.3675i 86 0.2910+1.1917i 87 0.3530+1.1917i 88 0.4947+0.9385i 89 0.4264+0.9385i 90 0.4947+1.0529i 91 0.4264+1.0529i 92 0.2910+0.9385i 93 0.3530+0.9385i 94 0.2910+1.0529i
95 0.3530+1.0529i 96 0.0354+0.5763i 97 0.0921+0.5763i 98 0.0354+0.6531i 99 0.0921+0.6531i 100 0.2185+0.5763i 101 0.1602+0.5763i 102 0.2185+0.6531i 103 0.1602+0.6531i 104 0.0354+0.8324i 105 0.0921+0.8324i 106 0.0354+0.7417i 107 0.0921+0.7417i 108 0.2185+0.8324i 109 0.1602+0.8324i 110 0.2185+0.7417i 111 0.1602+0.7417i 112 0.4947+0.5763i 113 0.4264+0.5763i 114 0.4947+0.6531i 115 0.4264+0.6531i
116 0.2910+0.5763i 117 0.3530+0.5763i 118 0.2910+0.6531i 119 0.3530+0.6531i 120 0.4947+0.8324i 121 0.4264+0.8324i 122 0.4947+0.7417i 123 0.4264+0.7417i 124 0.2910+0.8324i 125 0.3530+0.8324i 126 0.2910+0.7417i 127 0.3530+0.7417i 128 1.3675+0.0354i 129 1.1917+0.0354i 130 1.3675+0.0921i 131 1.1917+0.0921i 132 0.9385+0.0354i 133 1.0529+0.0354i 134 0.9385+0.0921i 135 1.0529+0.0921i 136 1.3675+0.2185i
137 1.1917+0.2185i 138 1.3675+0.1602i 139 1.1917+0.1602i 140 0.9385+0.2185i 141 1.0529+0.2185i 142 0.9385+0.1602i 143 1.0529+0.1602i 144 0.5763+0.0354i 145 0.6531+0.0354i 146 0.5763+0.0921i 147 0.6531+0.0921i 148 0.8324+0.0354i 149 0.7417+0.0354i 150 0.8324+0.0921i 151 0.7417+0.0921i 152 0.5763+0.2185i 153 0.6531+0.2185i 154 0.5763+0.1602i 155 0.6531+0.1602i 156 0.8324+0.2185i 157 0.7417+0.2185i
158 0.8324+0.1602i 159 0.7417+0.1602i 160 1.3675+0.4947i 161 1.1917+0.4947i 162 1.3675+0.4264i 163 1.1917+0.4264i 164 0.9385+0.4947i 165 1.0529+0.4947i 166 0.9385+0.4264i 167 1.0529+0.4264i 168 1.3675+0.2910i 169 1.1917+0.2910i 170 1.3675+0.3530i 171 1.1917+0.3530i 172 0.9385+0.2910i 173 1.0529+0.2910i 174 0.9385+0.3530i 175 1.0529+0.3530i 176 0.5763+0.4947i 177 0.6531+0.4947i 178 0.5763+0.4264i
179 0.6531+0.4264i 180 0.8324+0.4947i 181 0.7417+0.4947i 182 0.8324+0.4264i 183 0.7417+0.4264i 184 0.5763+0.2910i 185 0.6531+0.2910i 186 0.5763+0.3530i 187 0.6531+0.3530i 188 0.8324+0.2910i 189 0.7417+0.2910i 190 0.8324+0.3530i 191 0.7417+0.3530i 192 0.0354+0.0354i 193 0.0921+0.0354i 194 0.0354+0.0921i 195 0.0921+0.0921i 196 0.2185+0.0354i 197 0.1602+0.0354i 198 0.2185+0.0921i 199 0.1602+0.0921i
200 0.0354+0.2185i 201 0.0921+0.2185i 202 0.0354+0.1602i 203 0.0921+0.1602i 204 0.2185+0.2185i 205 0.1602+0.2185i 206 0.2185+0.1602i 207 0.1602+0.1602i 208 0.4947+0.0354i 209 0.4264+0.0354i 210 0.4947+0.0921i 211 0.4264+0.0921i 212 0.2910+0.0354i 213 0.3530+0.0354i 214 0.2910+0.0921i 215 0.3530+0.0921i 216 0.4947+0.2185i 217 0.4264+0.2185i 218 0.4947+0.1602i 219 0.4264+0.1602i 220 0.2910+0.2185i
221 0.3530+0.2185i 222 0.2910+0.1602i 223 0.3530+0.1602i 224 0.0354+0.4947i 225 0.0921+0.4947i 226 0.0354+0.4264i 227 0.0921+0.4264i 228 0.2185+0.4947i 229 0.1602+0.4947i 230 0.2185+0.4264i 231 0.1602+0.4264i 232 0.0354+0.2910i 233 0.0921+0.2910i 234 0.0354+0.3530i 235 0.0921+0.3530i 236 0.2185+0.2910i 237 0.1602+0.2910i 238 0.2185+0.3530i 239 0.1602+0.3530i 240 0.4947+0.4947i 241 0.4264+0.4947i
242 0.4947+0.4264i 243 0.4264+0.4264i 244 0.2910+0.4947i 245 0.3530+0.4947i 246 0.2910+0.4264i 247 0.3530+0.4264i 248 0.4947+0.2910i 249 0.4264+0.2910i 250 0.4947+0.3530i 251 0.4264+0.3530i 252 0.2910+0.2910i 253 0.3530+0.2910i 254 0.2910+0.3530i 255 0.3530+0.3530i 256 -1.3675+1.3675i 257 -1.1917+1.3675i 258 -1.3675+1.1917i 259 -1.1917+1.1917i 260 -0.9385+1.3675i 261 -1.0529+1.3675i 262 -0.9385+1.1917i
263 -1.0529+1.1917i 264 -1.3675+0.9385i 265 -1.1917+0.9385i 266 -1.3675+1.0529i 267 -1.1917+1.0529i 268 -0.9385+0.9385i 269 -1.0529+0.9385i 270 -0.9385+1.0529i 271 -1.0529+1.0529i 272 -0.5763+1.3675i 273 -0.6531+1.3675i 274 -0.5763+1.1917i 275 -0.6531+1.1917i 276 -0.8324+1.3675i 277 -0.7417+1.3675i 278 -0.8324+1.1917i 279 -0.7417+1.1917i 280 -0.5763+0.9385i 281 -0.6531+0.9385i 282 -0.5763+1.0529i 283 -0.6531+1.0529i
284 -0.8324+0.9385i 285 -0.7417+0.9385i 286 -0.8324+1.0529i 287 -0.7417+1.0529i 288 -1.3675+0.5763i 289 -1.1917+0.5763i 290 -1.3675+0.6531i 291 -1.1917+0.6531i 292 -0.9385+0.5763i 293 -1.0529+0.5763i 294 -0.9385+0.6531i 295 -1.0529+0.6531i 296 -1.3675+0.8324i 297 -1.1917+0.8324i 298 -1.3675+0.7417i 299 -1.1917+0.7417i 300 -0.9385+0.8324i 301 -1.0529+0.8324i 302 -0.9385+0.7417i 303 -1.0529+0.7417i 304 -0.5763+0.5763i
305 -0.6531+0.5763i 306 -0.5763+0.6531i 307 -0.6531+0.6531i 308 -0.8324+0.5763i 309 -0.7417+0.5763i 310 -0.8324+0.6531i 311 -0.7417+0.6531i 312 -0.5763+0.8324i 313 -0.6531+0.8324i 314 -0.5763+0.7417i 315 -0.6531+0.7417i 316 -0.8324+0.8324i 317 -0.7417+0.8324i 318 -0.8324+0.7417i 319 -0.7417+0.7417i 320 -0.0354+1.3675i 321 -0.0921+1.3675i 322 -0.0354+1.1917i 323 -0.0921+1.1917i 324 -0.2185+1.3675i 325 -0.1602+1.3675i
326 -0.2185+1.1917i 327 -0.1602+1.1917i 328 -0.0354+0.9385i 329 -0.0921+0.9385i 330 -0.0354+1.0529i 331 -0.0921+1.0529i 332 -0.2185+0.9385i 333 -0.1602+0.9385i 334 -0.2185+1.0529i 335 -0.1602+1.0529i 336 -0.4947+1.3675i 337 -0.4264+1.3675i 338 -0.4947+1.1917i 339 -0.4264+1.1917i 340 -0.2910+1.3675i 341 -0.3530+1.3675i 342 -0.2910+1.1917i 343 -0.3530+1.1917i 344 -0.4947+0.9385i 345 -0.4264+0.9385i 346 -0.4947+1.0529i
347 -0.4264+1.0529i 348 -0.2910+0.9385i 349 -0.3530+0.9385i 350 -0.2910+1.0529i 351 -0.3530+1.0529i 352 -0.0354+0.5763i 353 -0.0921+0.5763i 354 -0.0354+0.6531i 355 -0.0921+0.6531i 356 -0.2185+0.5763i 357 -0.1602+0.5763i 358 -0.2185+0.6531i 359 -0.1602+0.6531i 360 -0.0354+0.8324i 361 -0.0921+0.8324i 362 -0.0354+0.7417i 363 -0.0921+0.7417i 364 -0.2185+0.8324i 365 -0.1602+0.8324i 366 -0.2185+0.7417i 367 -0.1602+0.7417i
368 -0.4947+0.5763i 369 -0.4264+0.5763i 370 -0.4947+0.6531i 371 -0.4264+0.6531i 372 -0.2910+0.5763i 373 -0.3530+0.5763i 374 -0.2910+0.6531i 375 -0.3530+0.6531i 376 -0.4947+0.8324i 377 -0.4264+0.8324i 378 -0.4947+0.7417i 379 -0.4264+0.7417i 380 -0.2910+0.8324i 381 -0.3530+0.8324i 382 -0.2910+0.7417i 383 -0.3530+0.7417i 384 -1.3675+0.0354i 385 -1.1917+0.0354i 386 -1.3675+0.0921i 387 -1.1917+0.0921i 388 -0.9385+0.0354i
389 -1.0529+0.0354i 390 -0.9385+0.0921i 391 -1.0529+0.0921i 392 -1.3675+0.2185i 393 -1.1917+0.2185i 394 -1.3675+0.1602i 395 -1.1917+0.1602i 396 -0.9385+0.2185i 397 -1.0529+0.2185i 398 -0.9385+0.1602i 399 -1.0529+0.1602i 400 -0.5763+0.0354i 401 -0.6531+0.0354i 402 -0.5763+0.0921i 403 -0.6531+0.0921i 404 -0.8324+0.0354i 405 -0.7417+0.0354i 406 -0.8324+0.0921i 407 -0.7417+0.0921i 408 -0.5763+0.2185i 409 -0.6531+0.2185i
410 -0.5763+0.1602i 411 -0.6531+0.1602i 412 -0.8324+0.2185i 413 -0.7417+0.2185i 414 -0.8324+0.1602i 415 -0.7417+0.1602i 416 -1.3675+0.4947i 417 -1.1917+0.4947i 418 -1.3675+0.4264i 419 -1.1917+0.4264i 420 -0.9385+0.4947i 421 -1.0529+0.4947i 422 -0.9385+0.4264i 423 -1.0529+0.4264i 424 -1.3675+0.2910i 425 -1.1917+0.2910i 426 -1.3675+0.3530i 427 -1.1917+0.3530i 428 -0.9385+0.2910i 429 -1.0529+0.2910i 430 -0.9385+0.3530i
431 -1.0529+0.3530i 432 -0.5763+0.4947i 433 -0.6531+0.4947i 434 -0.5763+0.4264i 435 -0.6531+0.4264i 436 -0.8324+0.4947i 437 -0.7417+0.4947i 438 -0.8324+0.4264i 439 -0.7417+0.4264i 440 -0.5763+0.2910i 441 -0.6531+0.2910i 442 -0.5763+0.3530i 443 -0.6531+0.3530i 444 -0.8324+0.2910i 445 -0.7417+0.2910i 446 -0.8324+0.3530i 447 -0.7417+0.3530i 448 -0.0354+0.0354i 449 -0.0921+0.0354i 450 -0.0354+0.0921i 451 -0.0921+0.0921i
452 -0.2185+0.0354i 453 -0.1602+0.0354i 454 -0.2185+0.0921i 455 -0.1602+0.0921i 456 -0.0354+0.2185i 457 -0.0921+0.2185i 458 -0.0354+0.1602i 459 -0.0921+0.1602i 460 -0.2185+0.2185i 461 -0.1602+0.2185i 462 -0.2185+0.1602i 463 -0.1602+0.1602i 464 -0.4947+0.0354i 465 -0.4264+0.0354i 466 -0.4947+0.0921i 467 -0.4264+0.0921i 468 -0.2910+0.0354i 469 -0.3530+0.0354i 470 -0.2910+0.0921i 471 -0.3530+0.0921i 472 -0.4947+0.2185i
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515 1.1917-1.1917i 516 0.9385-1.3675i 517 1.0529-1.3675i 518 0.9385-1.1917i 519 1.0529-1.1917i 520 1.3675-0.9385i 521 1.1917-0.9385i 522 1.3675-1.0529i 523 1.1917-1.0529i 524 0.9385-0.9385i 525 1.0529-0.9385i 526 0.9385-1.0529i 527 1.0529-1.0529i 528 0.5763-1.3675i 529 0.6531-1.3675i 530 0.5763-1.1917i 531 0.6531-1.1917i 532 0.8324-1.3675i 533 0.7417-1.3675i 534 0.8324-1.1917i 535 0.7417-1.1917i
536 0.5763-0.9385i 537 0.6531-0.9385i 538 0.5763-1.0529i 539 0.6531-1.0529i 540 0.8324-0.9385i 541 0.7417-0.9385i 542 0.8324-1.0529i 543 0.7417-1.0529i 544 1.3675-0.5763i 545 1.1917-0.5763i 546 1.3675-0.6531i 547 1.1917-0.6531i 548 0.9385-0.5763i 549 1.0529-0.5763i 550 0.9385-0.6531i 551 1.0529-0.6531i 552 1.3675-0.8324i 553 1.1917-0.8324i 554 1.3675-0.7417i 555 1.1917-0.7417i 556 0.9385-0.8324i
557 1.0529-0.8324i 558 0.9385-0.7417i 559 1.0529-0.7417i 560 0.5763-0.5763i 561 0.6531-0.5763i 562 0.5763-0.6531i 563 0.6531-0.6531i 564 0.8324-0.5763i 565 0.7417-0.5763i 566 0.8324-0.6531i 567 0.7417-0.6531i 568 0.5763-0.8324i 569 0.6531-0.8324i 570 0.5763-0.7417i 571 0.6531-0.7417i 572 0.8324-0.8324i 573 0.7417-0.8324i 574 0.8324-0.7417i 575 0.7417-0.7417i 576 0.0354-1.3675i 577 0.0921-1.3675i
578 0.0354-1.1917i 579 0.0921-1.1917i 580 0.2185-1.3675i 581 0.1602-1.3675i 582 0.2185-1.1917i 583 0.1602-1.1917i 584 0.0354-0.9385i 585 0.0921-0.9385i 586 0.0354-1.0529i 587 0.0921-1.0529i 588 0.2185-0.9385i 589 0.1602-0.9385i 590 0.2185-1.0529i 591 0.1602-1.0529i 592 0.4947-1.3675i 593 0.4264-1.3675i 594 0.4947-1.1917i 595 0.4264-1.1917i 596 0.2910-1.3675i 597 0.3530-1.3675i 598 0.2910-1.1917i
599 0.3530-1.1917i 600 0.4947-0.9385i 601 0.4264-0.9385i 602 0.4947-1.0529i 603 0.4264-1.0529i 604 0.2910-0.9385i 605 0.3530-0.9385i 606 0.2910-1.0529i 607 0.3530-1.0529i 608 0.0354-0.5763i 609 0.0921-0.5763i 610 0.0354-0.6531i 611 0.0921-0.6531i 612 0.2185-0.5763i 613 0.1602-0.5763i 614 0.2185-0.6531i 615 0.1602-0.6531i 616 0.0354-0.8324i 617 0.0921-0.8324i 618 0.0354-0.7417i 619 0.0921-0.7417i
620 0.2185-0.8324i 621 0.1602-0.8324i 622 0.2185-0.7417i 623 0.1602-0.7417i 624 0.4947-0.5763i 625 0.4264-0.5763i 626 0.4947-0.6531i 627 0.4264-0.6531i 628 0.2910-0.5763i 629 0.3530-0.5763i 630 0.2910-0.6531i 631 0.3530-0.6531i 632 0.4947-0.8324i 633 0.4264-0.8324i 634 0.4947-0.7417i 635 0.4264-0.7417i 636 0.2910-0.8324i 637 0.3530-0.8324i 638 0.2910-0.7417i 639 0.3530-0.7417i 640 1.3675-0.0354i
641 1.1917-0.0354i 642 1.3675-0.0921i 643 1.1917-0.0921i 644 0.9385-0.0354i 645 1.0529-0.0354i 646 0.9385-0.0921i 647 1.0529-0.0921i 648 1.3675-0.2185i 649 1.1917-0.2185i 650 1.3675-0.1602i 651 1.1917-0.1602i 652 0.9385-0.2185i 653 1.0529-0.2185i 654 0.9385-0.1602i 655 1.0529-0.1602i 656 0.5763-0.0354i 657 0.6531-0.0354i 658 0.5763-0.0921i 659 0.6531-0.0921i 660 0.8324-0.0354i 661 0.7417-0.0354i
662 0.8324-0.0921i 663 0.7417-0.0921i 664 0.5763-0.2185i 665 0.6531-0.2185i 666 0.5763-0.1602i 667 0.6531-0.1602i 668 0.8324-0.2185i 669 0.7417-0.2185i 670 0.8324-0.1602i 671 0.7417-0.1602i 672 1.3675-0.4947i 673 1.1917-0.4947i 674 1.3675-0.4264i 675 1.1917-0.4264i 676 0.9385-0.4947i 677 1.0529-0.4947i 678 0.9385-0.4264i 679 1.0529-0.4264i 680 1.3675-0.2910i 681 1.1917-0.2910i 682 1.3675-0.3530i
683 1.1917-0.3530i 684 0.9385-0.2910i 685 1.0529-0.2910i 686 0.9385-0.3530i 687 1.0529-0.3530i 688 0.5763-0.4947i 689 0.6531-0.4947i 690 0.5763-0.4264i 691 0.6531-0.4264i 692 0.8324-0.4947i 693 0.7417-0.4947i 694 0.8324-0.4264i 695 0.7417-0.4264i 696 0.5763-0.2910i 697 0.6531-0.2910i 698 0.5763-0.3530i 699 0.6531-0.3530i 700 0.8324-0.2910i 701 0.7417-0.2910i 702 0.8324-0.3530i 703 0.7417-0.3530i
704 0.0354-0.0354i 705 0.0921-0.0354i 706 0.0354-0.0921i 707 0.0921-0.0921i 708 0.2185-0.0354i 709 0.1602-0.0354i 710 0.2185-0.0921i 711 0.1602-0.0921i 712 0.0354-0.2185i 713 0.0921-0.2185i 714 0.0354-0.1602i 715 0.0921-0.1602i 716 0.2185-0.2185i 717 0.1602-0.2185i 718 0.2185-0.1602i 719 0.1602-0.1602i 720 0.4947-0.0354i 721 0.4264-0.0354i 722 0.4947-0.0921i 723 0.4264-0.0921i 724 0.2910-0.0354i
725 0.3530-0.0354i 726 0.2910-0.0921i 727 0.3530-0.0921i 728 0.4947-0.2185i 729 0.4264-0.2185i 730 0.4947-0.1602i 731 0.4264-0.1602i 732 0.2910-0.2185i 733 0.3530-0.2185i 734 0.2910-0.1602i 735 0.3530-0.1602i 736 0.0354-0.4947i 737 0.0921-0.4947i 738 0.0354-0.4264i 739 0.0921-0.4264i 740 0.2185-0.4947i 741 0.1602-0.4947i 742 0.2185-0.4264i 743 0.1602-0.4264i 744 0.0354-0.2910i 745 0.0921-0.2910i
746 0.0354-0.3530i 747 0.0921-0.3530i 748 0.2185-0.2910i 749 0.1602-0.2910i 750 0.2185-0.3530i 751 0.1602-0.3530i 752 0.4947-0.4947i 753 0.4264-0.4947i 754 0.4947-0.4264i 755 0.4264-0.4264i 756 0.2910-0.4947i 757 0.3530-0.4947i 758 0.2910-0.4264i 759 0.3530-0.4264i 760 0.4947-0.2910i 761 0.4264-0.2910i 762 0.4947-0.3530i 763 0.4264-0.3530i 764 0.2910-0.2910i 765 0.3530-0.2910i 766 0.2910-0.3530i
767 0.3530-0.3530i 768 -1.3675-1.3675i 769 -1.1917-1.3675i 770 -1.3675-1.1917i 771 -1.1917-1.1917i 772 -0.9385-1.3675i 773 -1.0529-1.3675i 774 -0.9385-1.1917i 775 -1.0529-1.1917i 776 -1.3675-0.9385i 777 -1.1917-0.9385i 778 -1.3675-1.0529i 779 -1.1917-1.0529i 780 -0.9385-0.9385i 781 -1.0529-0.9385i 782 -0.9385-1.0529i 783 -1.0529-1.0529i 784 -0.5763-1.3675i 785 -0.6531-1.3675i 786 -0.5763-1.1917i 787 -0.6531-1.1917i
788 -0.8324-1.3675i 789 -0.7417-1.3675i 790 -0.8324-1.1917i 791 -0.7417-1.1917i 792 -0.5763-0.9385i 793 -0.6531-0.9385i 794 -0.5763-1.0529i 795 -0.6531-1.0529i 796 -0.8324-0.9385i 797 -0.7417-0.9385i 798 -0.8324-1.0529i 799 -0.7417-1.0529i 800 -1.3675-0.5763i 801 -1.1917-0.5763i 802 -1.3675-0.6531i 803 -1.1917-0.6531i 804 -0.9385-0.5763i 805 -1.0529-0.5763i 806 -0.9385-0.6531i 807 -1.0529-0.6531i 808 -1.3675-0.8324i
809 -1.1917-0.8324i 810 -1.3675-0.7417i 811 -1.1917-0.7417i 812 -0.9385-0.8324i 813 -1.0529-0.8324i 814 -0.9385-0.7417i 815 -1.0529-0.7417i 816 -0.5763-0.5763i 817 -0.6531-0.5763i 818 -0.5763-0.6531i 819 -0.6531-0.6531i 820 -0.8324-0.5763i 821 -0.7417-0.5763i 822 -0.8324-0.6531i 823 -0.7417-0.6531i 824 -0.5763-0.8324i 825 -0.6531-0.8324i 826 -0.5763-0.7417i 827 -0.6531-0.7417i 828 -0.8324-0.8324i 829 -0.7417-0.8324i
830 -0.8324-0.7417i 831 -0.7417-0.7417i 832 -0.0354-1.3675i 833 -0.0921-1.3675i 834 -0.0354-1.1917i 835 -0.0921-1.1917i 836 -0.2185-1.3675i 837 -0.1602-1.3675i 838 -0.2185-1.1917i 839 -0.1602-1.1917i 840 -0.0354-0.9385i 841 -0.0921-0.9385i 842 -0.0354-1.0529i 843 -0.0921-1.0529i 844 -0.2185-0.9385i 845 -0.1602-0.9385i 846 -0.2185-1.0529i 847 -0.1602-1.0529i 848 -0.4947-1.3675i 849 -0.4264-1.3675i 850 -0.4947-1.1917i
851 -0.4264-1.1917i 852 -0.2910-1.3675i 853 -0.3530-1.3675i 854 -0.2910-1.1917i 855 -0.3530-1.1917i 856 -0.4947-0.9385i 857 -0.4264-0.9385i 858 -0.4947-1.0529i 859 -0.4264-1.0529i 860 -0.2910-0.9385i 861 -0.3530-0.9385i 862 -0.2910-1.0529i 863 -0.3530-1.0529i 864 -0.0354-0.5763i 865 -0.0921-0.5763i 866 -0.0354-0.6531i 867 -0.0921-0.6531i 868 -0.2185-0.5763i 869 -0.1602-0.5763i 870 -0.2185-0.6531i 871 -0.1602-0.6531i
872 -0.0354-0.8324i 873 -0.0921-0.8324i 874 -0.0354-0.7417i 875 -0.0921-0.7417i 876 -0.2185-0.8324i 877 -0.1602-0.8324i 878 -0.2185-0.7417i 879 -0.1602-0.7417i 880 -0.4947-0.5763i 881 -0.4264-0.5763i 882 -0.4947-0.6531i 883 -0.4264-0.6531i 884 -0.2910-0.5763i 885 -0.3530-0.5763i 886 -0.2910-0.6531i 887 -0.3530-0.6531i 888 -0.4947-0.8324i 889 -0.4264-0.8324i 890 -0.4947-0.7417i 891 -0.4264-0.7417i 892 -0.2910-0.8324i
893 -0.3530-0.8324i 894 -0.2910-0.7417i 895 -0.3530-0.7417i 896 -1.3675-0.0354i 897 -1.1917-0.0354i 898 -1.3675-0.0921i 899 -1.1917-0.0921i 900 -0.9385-0.0354i 901 -1.0529-0.0354i 902 -0.9385-0.0921i 903 -1.0529-0.0921i 904 -1.3675-0.2185i 905 -1.1917-0.2185i 906 -1.3675-0.1602i 907 -1.1917-0.1602i 908 -0.9385-0.2185i 909 -1.0529-0.2185i 910 -0.9385-0.1602i 911 -1.0529-0.1602i 912 -0.5763-0.0354i 913 -0.6531-0.0354i
914 -0.5763-0.0921i 915 -0.6531-0.0921i 916 -0.8324-0.0354i 917 -0.7417-0.0354i 918 -0.8324-0.0921i 919 -0.7417-0.0921i 920 -0.5763-0.2185i 921 -0.6531-0.2185i 922 -0.5763-0.1602i 923 -0.6531-0.1602i 924 -0.8324-0.2185i 925 -0.7417-0.2185i 926 -0.8324-0.1602i 927 -0.7417-0.1602i 928 -1.3675-0.4947i 929 -1.1917-0.4947i 930 -1.3675-0.4264i 931 -1.1917-0.4264i 932 -0.9385-0.4947i 933 -1.0529-0.4947i 934 -0.9385-0.4264i
935 -1.0529-0.4264i 936 -1.3675-0.2910i 937 -1.1917-0.2910i 938 -1.3675-0.3530i 939 -1.1917-0.3530i 940 -0.9385-0.2910i 941 -1.0529-0.2910i 942 -0.9385-0.3530i 943 -1.0529-0.3530i 944 -0.5763-0.4947i 945 -0.6531-0.4947i 946 -0.5763-0.4264i 947 -0.6531-0.4264i 948 -0.8324-0.4947i 949 -0.7417-0.4947i 950 -0.8324-0.4264i 951 -0.7417-0.4264i 952 -0.5763-0.2910i 953 -0.6531-0.2910i 954 -0.5763-0.3530i 955 -0.6531-0.3530i
956 -0.8324-0.2910i 957 -0.7417-0.2910i 958 -0.8324-0.3530i 959 -0.7417-0.3530i 960 -0.0354-0.0354i 961 -0.0921-0.0354i 962 -0.0354-0.0921i 963 -0.0921-0.0921i 964 -0.2185-0.0354i 965 -0.1602-0.0354i 966 -0.2185-0.0921i 967 -0.1602-0.0921i 968 -0.0354-0.2185i 969 -0.0921-0.2185i 970 -0.0354-0.1602i 971 -0.0921-0.1602i 972 -0.2185-0.2185i 973 -0.1602-0.2185i 974 -0.2185-0.1602i 975 -0.1602-0.1602i 976 -0.4947-0.0354i
977 -0.4264-0.0354i 978 -0.4947-0.0921i 979 -0.4264-0.0921i 980 -0.2910-0.0354i 981 -0.3530-0.0354i 982 -0.2910-0.0921i 983 -0.3530-0.0921i 984 -0.4947-0.2185i 985 -0.4264-0.2185i 986 -0.4947-0.1602i 987 -0.4264-0.1602i 988 -0.2910-0.2185i 989 -0.3530-0.2185i 990 -0.2910-0.1602i 991 -0.3530-0.1602i 992 -0.0354-0.4947i 993 -0.0921-0.4947i 994 -0.0354-0.4264i 995 -0.0921-0.4264i 996 -0.2185-0.4947i 997 -0.1602-0.4947i
998 -0.2185-0.4264i 999 -0.1602-0.4264i 1000 -0.0354-0.2910i 1001 -0.0921-0.2910i 1002 -0.0354-0.3530i 1003 -0.0921-0.3530i 1004 -0.2185-0.2910i 1005 -0.1602-0.2910i 1006 -0.2185-0.3530i 1007 -0.1602-0.3530i 1008 -0.4947-0.4947i 1009 -0.4264-0.4947i 1010 -0.4947-0.4264i 1011 -0.4264-0.4264i 1012 -0.2910-0.4947i 1013 -0.3530-0.4947i 1014 -0.2910-0.4264i 1015 -0.3530-0.4264i 1016 -0.4947-0.2910i 1017 -0.4264-0.2910i 1018 -0.4947-0.3530i
1019 -0.4264-0.3530i 1020 -0.2910-0.2910i 1021 -0.3530-0.2910i 1022 -0.2910-0.3530i 1023 -0.3530-0.3530i
5. the interlace map method of LDPC code word as claimed in claim 1, it is characterized in that, the number of described column major order is 10 row.
6. a deinterleaving de-mapping method for LDPC code word, is characterized in that, comprise the steps:
Soft demapping process is carried out to obtain bit soft value data according to corresponding planisphere to symbol stream soft value data; Wherein said symbol stream soft value data are the symbol stream that interlace map method that receiving terminal receives LDPC code word as claimed in claim 1 obtains;
Described bit soft value data are sequentially written in memory space by row and column major order reads to obtain first time than the bit soft value data after deinterleave in this memory space;
Described first time is divided into the multiple bit soft value data sub-block of continuous print than the bit soft value data after deinterleave by predetermined length, and according to bit soft value data sub-block described in corresponding bit exchange pattern change put in order form second time than the bit soft value data after deinterleave;
Described second time is carried out third time than deinterleave to obtain third time than the bit soft value data after deinterleave than the bit soft value data of the check part corresponded in LDPC code word in the bit soft value data after deinterleave;
Described second time is spliced into bit soft value data flow with described third time than the bit soft value data after deinterleave than in the bit soft value data after deinterleave;
LDPC decoding process is carried out to obtain decoded bitstream data to described bit soft value data flow.
7. the deinterleaving de-mapping method of LDPC code word as claimed in claim 6, it is characterized in that, describedly described second time is carried out third time than the bit soft value data of the check part corresponded in LDPC code word in the bit soft value data after deinterleave comprise than the bit soft value data after deinterleave to obtain third time than deinterleave:
Described second time is sequentially written in memory space by row than the bit soft value data of the check part corresponded in LDPC code word in the bit soft value data after deinterleave and column major order reads in this memory space, the described columns that also column major order reads of write is by row 10 row, obtains third time than the bit soft value data after deinterleave.
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