CN107483145A - Information processor - Google Patents
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- CN107483145A CN107483145A CN201710474024.4A CN201710474024A CN107483145A CN 107483145 A CN107483145 A CN 107483145A CN 201710474024 A CN201710474024 A CN 201710474024A CN 107483145 A CN107483145 A CN 107483145A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention provides a kind of information processor, including：Coded modulation unit, each described information bit stream is separately encoded according to emitting side coded modulation information and the system version information and is modulated to emitting side symbol stream, and by the corresponding combined carry out coded modulation of emitting side coded modulation information and other signalings of the system version information, each described information bit stream, obtain signaling symbols stream；And framing generation unit, all emitting side symbol streams and the signaling symbols stream are subjected to framing and generate baseband symbol stream.Can be under conditions of a large amount of infrastructure rebuildings and terminal staging not be needed by the information processor so that newest coding modulation technique is merged in time and is possibly realized into existing standard.
Description
The application is the divisional application of original bill, the application number 201410498851.3 of original bill, 2014 applyings date September 25
Day, invention and created name " information processing method and device ".
Technical field
The present invention relates to digital information transmission field, more particularly to a kind of information processor.
Background technology
Coded modulation, demodulation coding technology are one of core technologies in communication system, while in order to adapt to high speed development
Demand, also require coded modulation, the improvement speed of demodulation coding technology, popularize speed should faster, it is more flexible.
Many broadcast systems, for example, the system such as DVB-S2, DVB-T2, DTMB and DVB-NGH can be related to coded modulation,
Demodulation coding technology, for example, more advanced low density parity check code (LDPC) coding techniques and constellation mapping are handed over bit
The technology of knitting is used in combination, and can effectively improve the transmission performance of broadcast system.
But the life cycle applied to a broadcast standard of broadcast system often has 10 to 20 years, during this period to the greatest extent
The existing more advanced coding modulation technique of pipe occurs, and can not but be fused in time in existing broadcast standard, also tend to be,
The popularization of each new standard also relates to substantial amounts of infrastructure rebuilding and terminal staging, brings disappearing for a large amount of material resources manpowers
Consumption.
The content of the invention
The present invention solves the problems, such as it is that more advanced coding modulation technique can not be fused into existing broadcast in time
In standard, and the popularization of so new standard will also tend to be related to substantial amounts of infrastructure rebuilding and terminal staging.
To solve the above problems, the embodiments of the invention provide a kind of information processing method, for by system version information
Coded modulation is carried out to be transmitted with message bit stream, and the information processing method, which is characterized in that, to be had steps of：According to
Each message bit stream is separately encoded by emitting side coded modulation information and system version information is modulated to emitting side symbol stream,
Also, by system version information, the emitting side coded modulation information and other signalings corresponding with each message bit stream
Combined progress coded modulation obtains signaling symbols stream；And all emitting side symbol streams and signaling symbols stream are subjected to framing simultaneously
Generate baseband symbol stream.
Optionally, system version information is correspondingly reflected with emitting side coded modulation information according to scheduled field mapping ruler
Penetrate as each information field, and each information field is spliced into rule according to scheduled field with other signalings and mutually spliced.
Optionally, above-mentioned scheduled field mapping ruler includes：Different system version informations, emitting side coded modulation are believed
The field value that breath is each mapped to have corresponding predetermined bit length according to mapping corresponding relation, above-mentioned scheduled field splicing rule
Then include：By with system version information, emitting side coded modulation information is corresponding and field value with predetermined bit length is pressed
Splicing is ranked up according to preset order rule.
Optionally, above-mentioned emitting side coded modulation packet contains：Code length, code check and constellation mapping exponent number, above-mentioned field
Value includes：The first field value, the second word to match respectively with system version information, code length, code check and constellation mapping exponent number
Segment value, the 3rd field value and the 4th field value, above-mentioned mapping corresponding relation include：Based at least one in system version information
Individual version correspondingly goes out the first different field values；Different second field values are correspondingly gone out based on different code lengths；Based on code check and it is
Version information unite to correspond to out different 3rd field values jointly；And difference the 4th is correspondingly gone out based on different constellation mapping exponent numbers
Field value.
Optionally, each message bit stream is carried out respectively according to emitting side coded modulation information and system version information
Coded modulation includes following sub-step：According to emitting side coded modulation information and system version information, message bit stream is carried out
Encode and be divided into each first bitstream block of predefined size；, will according to emitting side coded modulation information and system version information
It is the second bitstream block that each first bitstream block, which interweaves,；And the second bitstream block is entered according to predetermined constellation mapping rule
Row mapping obtains emitting side symbol stream.
The embodiment of the present invention additionally provides a kind of information processing method, goes out system version information and information for demodulation coding
Bit stream, the information processing method, which is characterized in that, to be had steps of：Baseband symbol stream is received, the baseband symbol stream is by such as
The above-mentioned information processing method for being used to carry out coded modulation obtains；Recover signaling and system version letter is parsed from the signaling
Breath and receiving side coded modulation information corresponding with emitting side coded modulation information and by channel, also, recover to extract
The receiving side symbol stream corresponding with emitting side symbol stream；And according to the receiving side coded modulation information and system recovered
Receiving side symbol stream demodulation coding is at least one message bit stream by version information.
Optionally, rule is split according to scheduled field from signaling, scheduled field demapping rule splits demapping and goes out word
Segment value, so as to parse system version information and receiving side coded modulation information.
Optionally, above-mentioned receiving side coded modulation packet contains：Code length, code check and constellation mapping exponent number, reflect according to solution
Corresponding relation is penetrated, the first field value, the second field value, the 3rd field value in the field value that split demapping is gone out and
Four field values, code length, code check and the constellation parsed respectively in system version information and receiving side coded modulation information reflect
Penetrate exponent number.
In addition, the embodiment of the present invention additionally provides a kind of information processor, for by system version information and information ratio
Spy's stream carries out coded modulation to be transmitted, it is characterised in that including：Coded modulation unit, adjusted for being encoded according to emitting side
Each message bit stream is separately encoded by information processed and system version information is modulated to emitting side symbol stream, also, by system
Version information, the emitting side coded modulation information corresponding with each message bit stream and the combined progress of other signalings
Coded modulation obtains signaling symbols stream；And framing generation unit, for all emitting side symbol streams to be flowed into signaling symbols
Row framing simultaneously generates baseband symbol stream.
In addition, present invention also offers a kind of information processor, go out system version information and information for demodulation coding
Bit stream, it is characterised in that including：Receiving unit, for receiving baseband symbol stream, the baseband symbol stream is by information as above
Obtained by processing unit；Extract resolution unit, for recover signaling and parsed from the signaling system version information and with
Emitting side coded modulation information is corresponding and passes through the receiving side coded modulation information of channel, also, recovers to extract and launch
The corresponding receiving side symbol stream of side symbol stream；And demodulation coding unit, adjusted for being encoded according to the receiving side recovered
Receiving side symbol stream demodulation coding is at least one message bit stream by information processed and system version information.
Compared with prior art, technical solution of the present invention has the advantages that：
According to information processing method and device involved in the present invention, because relevant to being added in the message bit stream of transmitting
The signaling of version information so that receiving terminal can be extracted by these signalings and identify corresponding version information, and be selected accordingly
Select and determine corresponding demodulation coding method, so as to which demodulation coding goes out message bit stream, a large amount of infrastructure can not needed to change
Make with conditions of terminal staging so that newest coding modulation technique is merged in time and is possibly realized into existing standard.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of information processing method for transmitting terminal in embodiment of the invention；
Fig. 2 is the block diagram of the information process of transmitting terminal in embodiment of the invention；
Fig. 3 is the block diagram of coded modulation process in embodiment of the invention；
Fig. 4 is a kind of schematic flow sheet of information processing method for receiving terminal in embodiment of the invention；
Fig. 5 is the block diagram of the information process of receiving terminal in embodiment of the invention；And
Fig. 6 is the block diagram of demodulation coding process in embodiment of the invention.
Embodiment
Inventor has found in the prior art, in time can not be fused to more advanced coding modulation technique existing wide
Broadcast in standard, and the popularization of so new standard will also tend to be related to substantial amounts of infrastructure rebuilding and terminal staging.
In view of the above-mentioned problems, inventor is by research, there is provided a kind of information processing method and device, because to being launched
Message bit stream in add the signaling about version information so that receiving terminal can by these signalings extract identify it is corresponding
Version information, and select to determine corresponding demodulation coding method accordingly, so as to which demodulation coding goes out message bit stream, Ke Yi
Under conditions of not needing a large amount of infrastructure rebuildings and terminal staging so that by newest coding modulation technique merge in time into
Existing standard is possibly realized.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
It is used to system version information and message bit stream carrying out coded modulation to enter the embodiments of the invention provide one kind
The information processing method that row is sent.Be as shown in Figure 1 the present invention embodiment at a kind of information for transmitting terminal
The schematic flow sheet of reason method.
With reference to figure 1, for the information processing method of transmitting terminal, for system version information and message bit stream to be compiled
Code modulation is comprised the following steps with being transmitted：
Step S11：Sub-step S11a is according to emitting side coded modulation information and system version information by each information ratio
Coded modulation be emitting side symbol stream to spy's stream respectively, also, sub-step S11b is by system version information and each information bit
Flow corresponding emitting side coded modulation information and the combined coded modulation that carries out of other signalings obtains signaling symbols stream；With
And
Step S12：All emitting side symbol streams and signaling symbols stream are subjected to framing and generate baseband symbol stream.
Specifically, in sub-step S11b, by system version information and emitting side coded modulation information according to scheduled field
Mapping ruler is correspondingly mapped as each information field, and each information field and other signalings are spliced according to scheduled field and advised
Then mutually splice.
Scheduled field mapping ruler includes：By different system version informations, emitting side coded modulation information according to mapping
Corresponding relation is each mapped to the field value with corresponding predetermined bit length.Scheduled field splicing rule includes：Will be with being
Version information, the emitting side coded modulation information of uniting are corresponding and have the field value of predetermined bit length according to preset order rule
It is ranked up splicing.
Wherein, field value includes：Match respectively with system version information, code length, code check and constellation mapping exponent number
First field value, the second field value, the 3rd field value and the 4th field value.
The specific matching of this above-mentioned four field values maps corresponding relation：Based at least one in system version information
Version correspondingly goes out the first different field values；Different second field values are correspondingly gone out based on different code lengths；Based on code check and system
Version information corresponds to out different 3rd field values jointly；And different 4th words are correspondingly gone out based on different constellation mapping exponent numbers
Segment value.
Fig. 2 is the block diagram of the information process of transmitting terminal in embodiment of the invention.Below by way of with reference to figure 2
Information processing method in above-mentioned Fig. 1 and information processor are illustrated.
In the present embodiment, information processing is carried out to n message bit stream (1 to n), then, n coded modulation mould of one side
Each message bit stream according to corresponding emitting side coded modulation information and system version information, is separately encoded tune by block respectively
Corresponding emitting side symbol stream (1 to n) is made as, also, on the other hand generates signalling module by system version information and each
The corresponding emitting side coded modulation information of message bit stream and other signaling combinations together, and the coding for passing through signaling
Modulation obtains signaling symbols stream.
Then, framing accords with n resulting emitting side symbol stream and resulting signaling with baseband signalling generation module
Number stream carries out framing and generates baseband symbol stream.
Fig. 3 is the block diagram of coded modulation process in embodiment of the invention.In the present embodiment, different information bits
Stream can be distinguished with different reception patterns, such as fixed reception program stream (a1), mobile receive program stream (a2), outdoor reception
Program stream (an) etc..
By Fig. 3 to a message bit stream a in above-mentioned Fig. 21In code modulating method be specifically described, save herein
Slightly message bit stream a2To anThe repeat specification based on same principle.
Code modulation module 1 includes coding module, Bit interleaving block and constellation mapping block in Fig. 2, then, accordingly
Ground, coded modulation process specifically includes following 3 steps in step S11a：
Step 1：Predictive encoding rule and system version information 1 in emitting side coded modulation information 1, by information ratio
Spy's stream a1It is divided into the message bit stream block one by one of predefined size, such as i-th of message bit stream block is [bi,0, bi,1...,
bi,K-1], wherein K is the length of each message bit stream block, then each message bit stream block is encoded into one first ratio
Spy's stream block, such as i-th of first bitstream blocks are [ci,0, ci,1..., ci,N-1], wherein N is the length of each the first bitstream block
Degree, wherein, BCH code, LDPC code, RS codes can be used comprising information, coding modes such as code check, code lengths in coded modulation scheme information
And their cascade, this is not limited by the present invention；
Step 2：Predetermined bit interlacing rule of the Bit interleaving block in emitting side coded modulation information 1 and system version
This information 1, by each the first bitstream block [ci,0,ci,1,…,ci,N-1] interweave be a second bitstream block [di,0,
di,1,…,di,N-1].It is understood that [di,0,di,1,…,di,N-1] it is by exchanging [ci,0,ci,1,…,ci,N-1] element order
Obtained from.Wherein, the information such as code check, code length, order of modulation are included in coded modulation scheme information；And
Step 3：Predetermined constellation mapping rule and system version of the constellation mapping block in emitting side coded modulation information 1
This information 1, by each the second bitstream block [di,0,di,1,…,di,N-1] it is mapped as an emitting side symbol stream i.e. coded modulation
Symbol stream block [si,0,si,1,…,si,N/L-1], wherein L is order of modulation.Constellation mapping block is first by each group of the second bit
Stream is N/L group by L components, then by L bit map of every a small group is a plural number, is N/ so as to obtain length
L [si,0,si,1,…,si,N/L-1].The information such as code check, constellation mapping exponent number are included wherein in coded modulation scheme information.
The embodiment of the present invention additionally provides a kind of information for going out system version information and message bit stream for demodulation coding
Processing method.Fig. 4 is a kind of schematic flow sheet of information processing method for receiving terminal in embodiment of the invention.
With reference to figure 4, the information processing method for receiving terminal comprises the following steps：
Step S21：Baseband symbol stream is received, the baseband symbol stream is the information processing by being used for transmitting terminal in above-mentioned Fig. 1
Method obtains；
Step S22：Signaling is recovered by sub-step S22a and parsed from the signaling system version information and with hair
Penetrate that side coded modulation information is corresponding and receiving side coded modulation information by channel, also, recovered by sub-step S22b
Extract the receiving side symbol stream corresponding with emitting side symbol stream；And
Step S23：According to the receiving side coded modulation information and system version information recovered by corresponding receiving side
Symbol stream demodulation coding is a corresponding message bit stream, can go out at least one information according to the demand demodulation coding of receiving terminal
Bit stream.
Specifically in step S22a, rule is split according to scheduled field from signaling, scheduled field demapping rule is torn open
Decomposition maps out field value, so as to parse system version information and receiving side coded modulation information.
Wherein, according to demapping corresponding relation, the first field value, the second word in the field value that split demapping is gone out
Segment value, the 3rd field value and the 4th field value, parse respectively in system version information and receiving side coded modulation information
Code length, code check and constellation mapping exponent number.
Fig. 5 is the block diagram of the information process of receiving terminal in embodiment of the invention.By Fig. 5 to above-mentioned figure
Information processing method and information processor in 4 for receiving terminal are specifically described.
Receiving terminal baseband symbol stream is synchronized with after equilibrium treatment, on the one hand, by extracting receiving side symbol stream
Module combines parsing signalling module and recovers other signalings that parsing comes, and extraction obtains right with the emitting side symbol stream of transmitting terminal institute
Each receiving side symbol stream (1 to n) of channel and should be have passed through.On the other hand, not only recover to parse by parsing signalling module
Go out system version information, and recover to parse corresponding with each emitting side coded modulation information and connect by each of channel
Receive side coded modulation information (1 to n).
At least one demodulation coding module is according at least one the receiving side coded modulation information and system version recovered
This information, by least one receiving side symbol stream, correspondingly demodulation coding is at least one message bit stream.Receiving terminal demodulation is translated
The method of code is corresponding with the method for transmitting terminal modulating-coding.
Fig. 6 is the block diagram of demodulation coding process in embodiment of the invention.Without loss of generality, Fig. 6 pairs is passed through
Demodulation coding method in above-mentioned steps S23 for message bit stream 1 is specifically described.
Predetermined constellation demapping rule and system version information of the De-mapping module in receiving side coded modulation information 1
1, by each receiving side symbol stream block [ti,0,ti,1,…,ti,N/L-1] it is that the demapping of receiving side symbol stream 1 is one group of the first LLR
Flow block [li,0,li,1,…,li,N-1].Wherein [ti,0,ti,1,…,ti,N/L-1] with an emitting side symbol stream block of transmitting terminal
[si,0,si,1,…,si,N/L-1] corresponding, [li,0,li,1,…,li,N-1] with a second bitstream block [d of transmitting terminali,0,
di,1,…,di,N-1] corresponding.Wherein, L is constellation mapping exponent number.Constellation demapping module is by each coded modulation symbolic solution
Be mapped as L LLR, the LLR table show log-likelihood ratio be 0 to the bit of transmitting terminal or be 1 estimation.Wherein, coding is adjusted
The information such as code check, order of modulation are included in pattern information processed.
Predetermined bit of the bit de-interleaving block in receiving side coded modulation information 1 deinterleaves rule and system version
Information 1, each the first LLR is flowed into block [li,0,li,1,…,li,N-1] deinterleave and flow block [m for the 2nd LLRi,0,mi,1,…,
mi,N-1].It is, [mi,0,mi,1,…,mi,N-1] by exchanging [li,0,li,1,…,li,N-1] the order of element obtain.Deinterleave
Exchange method it is corresponding with the method for transmitting terminal Bit Interleave so that [mi,0,mi,1,…,mi,N-1] order and corresponding one
Individual first bitstream block [ci,0,ci,1,…,ci,N-1] order it is corresponding.Code check, code are included wherein in coded modulation scheme information
The information such as length, order of modulation.
Decoding module is according to predetermined decoding rule in receiving side coded modulation information 1 and system version information 1, by each
2nd LLR stream blocks [mi,0,mi,1,…,mi,N-1] be decoded as a message bit stream block [b i,0,b i,1,…,b i,K-1], decode out
The message bit stream block and transmitting terminal a message bit stream block [bi,0,bi,1,…,bi,K-1] corresponding, translated so as to demodulate
Code goes out a corresponding message bit stream a1。
An example is set forth below and further describes technical scheme.
<Embodiment 1>
In the information processing system of the present embodiment, transmitting terminal is set as only for a message bit stream, therefore only
There is a code modulation module.Correspondingly, receiving terminal also only has a demodulation coding module.In addition, it is bag by the default
Include two versions, i.e. version 1.0 and version 1.1.
Signalling module is generated in Fig. 2 to be pressed such as table 1 below to the institute of table 4 according to system version information and emitting side coded modulation information
The scheduled field mapping ruler shown is respectively mapped as corresponding each information field, and by these information fields and other
Signaling field is spliced together according to the scheduled field splicing rule of table 5,
And coded modulation is carried out to signaling.
Table 1：Field mapping ruler between system version information and the first field value
| First field value | Corresponding system version |
| “00010000” | 1.0 |
| “00010001” | 1.1 |
| Other | It is undefined |
Table 2：Field mapping ruler between code length and the second field value
Table 3：Field mapping ruler between code check, system version information and the 3rd field value
| System version information | 3rd field value | Code check |
| 1.0 | “0000” | 2/15 |
| 1.0 | “0001” | 3/15 |
| 1.0 | “0010” | 4/15 |
| 1.0 | “0011” | 5/15 |
| 1.0 | “0100” | 6/15 |
| 1.0 | “0101” | 7/15 |
| 1.0 | “0110” | 8/15 |
| 1.0 | “0111” | 9/15 |
| 1.0 | “1000” | 10/15 |
| 1.0 | “1001” | 11/15 |
| 1.0 | “1010” | 12/15 |
| 1.0 | “1011” | 13/15 |
| 1.0 | Other | It is undefined |
| 1.1 | “0000” | 1/12 |
| 1.1 | “0001” | 2/12 |
| 1.1 | “0010” | 3/12 |
| 1.1 | “0011” | 4/12 |
| 1.1 | “0100” | 5/12 |
| 1.1 | “0101” | 6/12 |
| 1.1 | “0110” | 7/12 |
| 1.1 | “0111” | 8/12 |
| 1.1 | “1000” | 9/12 |
| 1.1 | “1001” | 10/12 |
| 1.1 | “1010” | 11/12 |
| 1.1 | Other | It is undefined |
Table 4：Field mapping ruler between constellation mapping exponent number and the 4th field value
| 4th field value | Constellation mapping exponent number |
| “0000” | 2 |
| “0001” | 4 |
| “0010” | 6 |
| “0011” | 8 |
| “0100” | 10 |
| Other | It is undefined |
Table 5：Part scheduled field splicing rule
| Length | Corresponding informance | |
| First field value | 8 bits | System version information |
| Second field value | 1 bit | Code length |
| 3rd field value | 4 bits | Code check |
| 4th field value | 3 bits | Constellation mapping exponent number |
In the present embodiment, system version information includes version 1.0 and version 1.1, by Fig. 2, such as three information bits
The system version that message bit stream 1 uses in stream is 1.0, the system version of other information bit stream 2 and the use of message bit stream 3
For 1.1.So, concrete numerical value in the coded modulation scheme of these three message bit streams is included respectively by table 6 below.
Table 6：Coded modulation scheme is illustrated
| Pattern example one | Pattern example two | Pattern example three | |
| System version information | 1.0 | 1.1 | 1.1 |
| Code length | 64800 | 64800 | 64800 |
| Code check | 5/15 | 4/12 | 8/12 |
| Constellation mapping exponent number | 4 | 4 | 2 |
Message bit stream is divided into one group of group information bit by coding module according to system version information, code length and code check, and
It is one group of bit stream of group first by this group of group information bits of encoded.
Specifically as known from Table 6, when system version information and emitting side coded modulation information meet that pattern example for the moment, encodes
Input information bits flow point is the message bit stream block that size one by one is 21600 bits by module, and with the first predictive encoding
Each message bit stream block is encoded to the first bitstream block that size is 64800 by rule.The present embodiment is delimited the organizational structure in advance to first
Code rule is not specifically described.
When system version information and emitting side coded modulation information meet pattern example two, coding module will also input information
Bit stream is divided into the message bit stream block that size one by one is 21600 bits, and is believed each piece with the second predictive encoding rule
Breath bit block is encoded to the first bitstream block that size is 64800 bits.Second predictive encoding rule is delimited the organizational structure in advance different from first
Code rule.Second predictive encoding rule is also not specifically described the present embodiment.
When system version information and emitting side coded modulation information meet pattern example three, coding module will input information ratio
Special flow point is the message bit stream block that size one by one is 43200 bits, and with the second predictive encoding rule by each block message
Bit block is encoded to the first bitstream block that size is 64800.It is pre- that second predictive encoding rule is clearly different from first or second
Determine coding rule.3rd predictive encoding rule is also not specifically described the present embodiment.
The Bit interleaving block of transmitting terminal according to system version information, code length, code check and constellation mapping exponent number by each
First bitstream block carries out Bit Interleave and obtains the second bitstream block, that is, the arrangement for changing the element in the first bitstream block is suitable
Sequence, but do not change element content.The module is interweaved with different predetermined bits respectively in the case of pattern example one, two, three advises
Then it is interleaved, that is, the method for changing order of elements is different.The present embodiment is not made to have to these three predetermined bit interlacing rules
Body describes.
The constellation mapping block of transmitting terminal according to code length, code check, constellation mapping exponent number and system version information by each
Second bitstream block is mapped to emitting side symbol stream, is formed as coded modulation symbol stream block.
As shown in table 7, when system version information and emitting side coded modulation information meet pattern example one or pattern example two,
The second bitstream block that one block length is 64800 is divided into 16200 groups by constellation mapping block by 4 bit a small group first.
Then it is a plural number by 4 bit maps of each group according to table 7, so as to obtain the coded modulation that length is 16200
Symbol stream block.For example, working as in the case of pattern example one, if a certain group of four bits are " 1010 ", constellation mapping block will
It is mapped as A10。[A0,A1,…,A15] and [B0,B1,…,B15] different.The present embodiment is to [A0,A1,…,A15] and [B0,
B1,…,B15] concrete numerical value be not described.
Table 7：Pattern example one, two constellation mapping methods
| Bit group | Pattern example one | Pattern example two |
| “0000” | A0 | B0 |
| “0001” | A1 | B1 |
| “0010” | A2 | B2 |
| “0011” | A3 | B3 |
| “0100” | A4 | B4 |
| “0101” | A5 | B5 |
| “0110” | A6 | B6 |
| “0111” | A7 | B7 |
| “1000” | A8 | B8 |
| “1001” | A9 | B9 |
| “1010” | A10 | B10 |
| “1011” | A11 | B11 |
| “1100” | A12 | B12 |
| “1101” | A13 | B13 |
| “1110” | A14 | B14 |
| “1111” | A15 | B15 |
As shown in table 8, when system version information and emitting side coded modulation information meet pattern example three, constellation mapping mould
Block is that a small group is divided into 32400 groups by 2 bits first by the second bitstream block that a block length is 64800.Then basis
2 bit maps of each group are a plural number by table 8, so as to obtain the coded modulation symbol stream block that length is 32400.
Table 8：The constellation mapping method of pattern example three
| Bit group | Coded modulation symbol |
| “00” | 1+1i |
| “01” | 1-1i |
| “10” | -1+1i |
| “11” | -1-1i |
Signaling is finally carried out framing with resulting emitting side symbol stream and generates baseband signalling by transmitting terminal.
Receiving terminal obtains signaling after sync equalizing, by signaling resolution module and therefrom extracts the first field value,
Two field values, the 3rd field value and the 4th field value, and system version information is parsed according to table 1 to table 5 and compiled with emitting side
The code corresponding receiving side coded modulation information of modulation intelligence.
Equally after sync equalizing, also by extract receiving side symbol flow module obtained it is corresponding with emitting side symbol stream
Receiving side symbol stream.
Demodulation coding module is according to the receiving side coded modulation information and system version information extracted by receiving side symbol
Stream demodulation coding is message bit stream.
Constellation demapping module adjusts one group of group coding according to code length, code check, constellation mapping exponent number and system version information
Symbol stream demapping processed is that one group of LLR of group the first flows.For example, when system version information and receiving side coded modulation information meet mould
During formula example one or two, each a length of 16200 receiving side symbol stream block demapping is length according to table 7 by constellation demapping module
Block is flowed for the first LLR of 64800 bits.When system version information and receiving side coded modulation information meet pattern example three, star
Each a length of 32400 receiving side symbol stream block demapping is a length of 64800 bit according to form 8 by seat De-mapping module
First LLR flows block.LLR in one the first LLR stream block corresponds the bit in second bitstream block of transmitting terminal.
The present embodiment is not construed as limiting to predetermined demapping rule, specific algorithm.
Bit de-interleaving block according to code length, code check and constellation mapping exponent number and system version information by each first
LLR flows root tuber and is deinterleaved according to than deinterleave rule as a 2nd LLR stream block.
It is a group information that each group of the 2nd LLR is flowed block decoding by decoding module according to code length, code check and system version information
Bitstream block, it is corresponding with a group information bitstream block of transmitting terminal.For example, when system version information and receiving side coding are adjusted
Information processed meets pattern example for the moment, and decoding module leads to according to the first predetermined decoding rule corresponding with the first predictive encoding rule
Cross 64800 LLR and translate to obtain 21600 bits, when system version information and receiving side coded modulation information meet pattern example two,
Decoding module according to the second predictive encoding corresponding the second predetermined decoding rule of rule by 64800 LLR translate 21600
Individual bit, when system version information meets pattern example three with receipts side coded modulation information, decoding module makes a reservation for according to the 3rd
The 3rd corresponding predetermined decoding rule of coding rule translates to obtain 43200 bits by 64800 LLR.The present embodiment is to above-mentioned
First and second and three the specific method of predetermined decoding rule be not described.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical scheme makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, according to the present invention
Any simple modifications, equivalents, and modifications made to above example of technical spirit, belong to technical solution of the present invention
Protection domain.
Claims (8)
1. a kind of information processor, for system version information and message bit stream to be carried out into coded modulation to be transmitted,
It is characterised in that it includes：
Coded modulation unit, according to emitting side coded modulation information and the system version information by each described information bit
Coded modulation is emitting side symbol stream to stream respectively, and the system version information, each described information bit stream is corresponding
The combined carry out coded modulation of emitting side coded modulation information and other signalings, obtain signaling symbols stream；And
Framing generation unit, all emitting side symbol streams and the signaling symbols stream are subjected to framing and generate baseband signalling
Stream.
2. information processor as claimed in claim 1, it is characterised in that：
Wherein, the coded modulation unit by the system version information and the emitting side coded modulation information according to reserved word
Section mapping ruler is correspondingly mapped as each information field, and by each information field and other described signalings according to predetermined
Field splicing rule is mutually spliced.
3. information processor as claimed in claim 2, it is characterised in that：
Wherein, the scheduled field mapping ruler includes：
The different system version informations, the emitting side coded modulation information are each mapped to according to mapping corresponding relation
Field value with corresponding predetermined bit length,
The scheduled field splicing rule includes：
Will be corresponding and with the predetermined bit length with the system version information, the emitting side coded modulation information
The field value is ranked up splicing according to preset order rule.
4. information processor as claimed in claim 3, it is characterised in that：
Wherein, the emitting side coded modulation information includes：Code length, code check and constellation mapping exponent number,
The field value includes：With the system version information, the code length, the code check and the constellation mapping exponent number point
The first field value, the second field value, the 3rd field value and the 4th field value not matched,
The mapping corresponding relation includes：
Correspondingly go out different first field values based at least one version in the system version information；
Correspondingly go out different second field values based on the different code lengths；
Correspond to different the 3rd field values based on the code check and the system version information come common；And
Correspondingly go out different the 4th field values based on the different constellation mapping exponent numbers.
5. information processor as claimed in claim 1, it is characterised in that：
Wherein, the coded modulation unit is according to the emitting side coded modulation information and the system version information, by described in
Message bit stream is encoded and is divided into each first bitstream block of predefined size, according to the emitting side coded modulation information
With the system version information, it is the second bitstream block that each described first bitstream block, which is interweaved, and according to predetermined constellation
Mapping ruler is mapped second bitstream block to obtain the emitting side symbol stream.
6. a kind of information processor, go out system version information and message bit stream for demodulation coding, it is characterised in that bag
Include：
Receiving unit, baseband symbol stream is received, the baseband symbol stream is by information processor institute as claimed in claim 1
Obtain；
Extract resolution unit, recover signaling and parsed from the signaling system version information and with the emitting side
Coded modulation information is corresponding and passes through the receiving side coded modulation information of channel, and recovers to extract and the emitting side symbol
Flow corresponding receiving side symbol stream；And
Demodulation coding unit, according to the receiving side coded modulation information parsed and the system version information, by institute
It is at least one described information bit stream to state receiving side symbol stream demodulation coding.
7. information processor as claimed in claim 6, it is characterised in that：
Wherein, the extraction resolution unit splits rule, scheduled field demapping rule from the signaling according to scheduled field
Split demapping and go out field value, so as to parse the system version information and the receiving side coded modulation information.
8. information processor as claimed in claim 7, it is characterised in that：
Wherein, the receiving side coded modulation information includes：Code length, code check and constellation mapping exponent number, the extraction parsing are single
Member is according to demapping corresponding relation, by the first field value split in the field value that demapping goes out, the second field value, the 3rd
Field value and the 4th field value, parse respectively in the system version information and the receiving side coded modulation information
The code length, the code check and the constellation mapping exponent number.
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| CN107483145B (en) | 2020-12-18 |
| CN107453841A (en) | 2017-12-08 |
| CN105515722B (en) | 2020-12-22 |
| CN107453841B (en) | 2020-12-18 |
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