CN105515722A - Information processing method and device - Google Patents
Information processing method and device Download PDFInfo
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- CN105515722A CN105515722A CN201410498851.3A CN201410498851A CN105515722A CN 105515722 A CN105515722 A CN 105515722A CN 201410498851 A CN201410498851 A CN 201410498851A CN 105515722 A CN105515722 A CN 105515722A
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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)
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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention provides an information processing method and device. The method is characterized in that aimed at the sending end, each information bit stream is coded and modulated into an emission-side symbol stream according to emission-side coding modulation information and system version information, the system version information, the emission-side coding modulation information corresponding to each information bit stream and other signaling are combined implement coding modulation and further to obtain a signaling symbol stream, and all the emission-side symbol streams and the signaling symbol stream are framed to generate a baseband symbol stream; aimed at the reception end, the baseband symbol stream is received, signaling is recovered, the system version information and reception-side coding modulation information corresponding to the emission-side coding modulation information and received via a channel are obtained via analysis, and reception-side symbol streams corresponding to the emission-side symbol streams are recovered and extracted; and according to the recovered reception-side coding modulation information and the system version information, the reception-side symbol stream is demodulated and decoded into at least one information bit stream.
Description
Technical field
The present invention relates to digital information transmission field, particularly a kind of information processing method and device.
Background technology
Coded modulation, demodulation coding technology are one of core technologies in communication system, simultaneously in order to adapt to high speed development demand, also require the improvement speed of coded modulation, demodulation coding technology, penetration and promotion speed should sooner, more flexible.
Many broadcast systems, the systems such as such as DVB-S2, DVB-T2, DTMB and DVB-NGH all can relate to coded modulation, demodulation coding technology, such as, more advanced low density parity check code (LDPC) coding techniques and constellation mapping are combined with Bit Interleave technology and uses, effectively can improve the transmission performance of broadcast system.
But, the life cycle being applied to a broadcast standard of broadcast system often has 10 to 20 years, although coding modulation technique existing more advanced during this period occurs, but cannot be fused in time in existing broadcast standard, also often, the popularization of each new standard also relates to a large amount of infrastructure rebuilding and terminal staging, brings the consumption of a large amount of material resources manpower.
Summary of the invention
The problem that the present invention solves to be fused in existing broadcast standard by more advanced coding modulation technique in time, and the popularization of new standard often also can relate to a large amount of infrastructure rebuilding and terminal staging like this.
For solving the problem, embodiments provide a kind of information processing method, for system version information and message bit stream are carried out coded modulation to send, this information processing method is characterized in that having following steps: according to emitting side coded modulation information and system version information by each message bit stream respectively coded modulation be emitting side symbol stream, further, combined to system version information, the emitting side coded modulation information corresponding with each message bit stream and other signalings coded modulation of carrying out is obtained signaling symbols stream; And all emitting side symbol stream and signaling symbols stream are carried out framing and generates baseband symbol stream.
Optionally, system version information and emitting side coded modulation information are correspondingly mapped as each information field according to predetermined field mapping ruler, and each information field is spliced rule with other signalings according to predetermined field splice mutually.
Optionally, above-mentioned predetermined field mapping ruler comprises: different system version information, emitting side coded modulation information should be related to the field value being mapped as respectively and having corresponding predetermined bit length according to mapping pair, and above-mentioned predetermined field splicing rule comprises: by corresponding with system version information, emitting side coded modulation information and the field value with predetermined bit length carries out sequence according to preset order rule splices.
Optionally, above-mentioned emitting side coded modulation packets of information contains: code length, code check and constellation mapping exponent number, above-mentioned field value comprises: the first field value matched respectively with system version information, code length, code check and constellation mapping exponent number, the second field value, the 3rd field value and the 4th field value, and above-mentioned mapping corresponding relation comprises: go out the first different field values based at least one version correspondence in system version information; Different second field value is gone out based on different code length correspondences; Carry out common correspondence based on code check and system version information and go out different 3rd field value; And go out different 4th field value based on different constellation mapping exponent number correspondences.
Optionally, according to emitting side coded modulation information and system version information, each message bit stream is carried out coded modulation respectively and comprise following sub-step: according to emitting side coded modulation information and system version information, message bit stream is carried out encoding and is divided into each first bitstream block of pre-sizing; According to emitting side coded modulation information and system version information, being interweaved by each first bitstream block is the second bitstream block; And according to predetermined constellation mapping rule, mapping is carried out to the second bitstream block and obtain emitting side symbol stream.
The embodiment of the present invention additionally provides a kind of information processing method, system version information and message bit stream is gone out for demodulation coding, this information processing method is characterized in that having following steps: receive baseband symbol stream, this baseband symbol stream is obtained for carrying out code modulated information processing method by such as above-mentioned; Recover signaling and from this signaling, parse system version information and corresponding with emitting side coded modulation information and through the receiver side coded modulation information of channel, and, recover to extract the receiver side symbol stream corresponding with emitting side symbol stream; And be at least one message bit stream according to recovered receiver side coded modulation information and system version information by receiver side symbol stream demodulation coding.
Optionally, from signaling, split rule according to predetermined field, predetermined field demapping rule fractionation demapping goes out field value, thus parse system version information and receiver side coded modulation information.
Optionally, above-mentioned receiver side coded modulation packets of information contains: code length, code check and constellation mapping exponent number, according to demapping corresponding relation, the first field value in the field value go out split demapping, the second field value, the 3rd field value and the 4th field value, parse code length, code check and the constellation mapping exponent number in system version information and receiver side coded modulation information respectively.
In addition, the embodiment of the present invention additionally provides a kind of information processor, for system version information and message bit stream are carried out coded modulation to send, it is characterized in that, comprise: coded modulation unit, for according to emitting side coded modulation information and system version information by each message bit stream respectively coded modulation be emitting side symbol stream, further, combined to system version information, the emitting side coded modulation information corresponding with each message bit stream and other signalings coded modulation of carrying out is obtained signaling symbols stream; And framing generation unit, for all emitting side symbol stream and signaling symbols stream are carried out framing and generate baseband symbol stream.
In addition, present invention also offers a kind of information processor, go out system version information and message bit stream for demodulation coding, it is characterized in that, comprise: receiving element, for receiving baseband symbol stream, this baseband symbol stream obtained by information processor as above; Extract resolution unit, for recovering signaling and parse system version information and corresponding with emitting side coded modulation information and through the receiver side coded modulation information of channel from this signaling, further, recover to extract the receiver side symbol stream corresponding with emitting side symbol stream; And demodulation coding unit, for being at least one message bit stream according to recovered receiver side coded modulation information and system version information by receiver side symbol stream demodulation coding.
Compared with prior art, technical solution of the present invention has following beneficial effect:
According to information processing method involved in the present invention and device, because to the signaling of adding in the message bit stream launched about version information, receiving terminal is extracted by these signalings and identifies corresponding version information, and select accordingly to determine corresponding demodulation coding method, thus demodulation coding goes out message bit stream, can, under the condition not needing a large amount of infrastructure rebuilding and terminal staging, make up-to-date coding modulation technique merge in time to become possibility into existing standard.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of information processing method for transmitting terminal in the specific embodiment of the present invention;
Fig. 2 is the block diagram of the information process of transmitting terminal in the specific embodiment of the present invention;
Fig. 3 is the block diagram of coded modulation process in the specific embodiment of the present invention;
Fig. 4 is the schematic flow sheet of a kind of information processing method for receiving terminal in the specific embodiment of the present invention;
Fig. 5 is the block diagram of the information process of receiving terminal in the specific embodiment of the present invention; And
Fig. 6 is the block diagram of demodulation coding process in the specific embodiment of the present invention.
Embodiment
Inventor finds in prior art, cannot be fused in existing broadcast standard by more advanced coding modulation technique in time, and the popularization of new standard often also can relate to a large amount of infrastructure rebuilding and terminal staging like this.
For the problems referred to above, inventor is through research, provide a kind of information processing method and device, because to the signaling of adding in launched message bit stream about version information, receiving terminal is extracted by these signalings and identifies corresponding version information, and select accordingly to determine corresponding demodulation coding method, thus demodulation coding goes out message bit stream, can, under the condition not needing a large amount of infrastructure rebuilding and terminal staging, make up-to-date coding modulation technique merge in time to become possibility into existing standard.
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.
Embodiments provide a kind of for system version information and message bit stream being carried out coded modulation to carry out the information processing method sent.The schematic flow sheet of a kind of information processing method for transmitting terminal in the specific embodiment of the present invention as shown in Figure 1.
With reference to figure 1, for the information processing method of transmitting terminal, for system version information and message bit stream are carried out coded modulation to send, comprise the steps:
Step S11: sub-step S11a according to emitting side coded modulation information and system version information by each message bit stream respectively coded modulation be emitting side symbol stream, further, combined to system version information, the emitting side coded modulation information corresponding with each message bit stream and other signalings coded modulation of carrying out is obtained signaling symbols stream by sub-step S11b; And
Step S12: all emitting side symbol stream and signaling symbols stream are carried out framing and generates baseband symbol stream.
Particularly, in sub-step S11b, system version information and emitting side coded modulation information are correspondingly mapped as each information field according to predetermined field mapping ruler, and each information field is spliced rule with other signalings according to predetermined field splice mutually.
Predetermined field mapping ruler comprises: different system version information, emitting side coded modulation information should be related to the field value being mapped as respectively and having corresponding predetermined bit length according to mapping pair.Predetermined field splicing rule comprises: by corresponding with system version information, emitting side coded modulation information and the field value with predetermined bit length carries out sequence according to preset order rule splices.
Wherein, field value comprises: the first field value matched respectively with system version information, code length, code check and constellation mapping exponent number, the second field value, the 3rd field value and the 4th field value.
The concrete coupling of these four field values above-mentioned maps corresponding relation and is: go out the first different field values based at least one version correspondence in system version information; Different second field value is gone out based on different code length correspondences; Carry out common correspondence based on code check and system version information and go out different 3rd field value; And go out different 4th field value based on different constellation mapping exponent number correspondences.
Fig. 2 is the block diagram of the information process of transmitting terminal in the specific embodiment of the present invention.Below by way of with reference to figure 2, the 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), so, n code modulation module is respectively according to corresponding emitting side coded modulation information and system version information on the one hand, by each message bit stream respectively coded modulation be corresponding emitting side symbol stream (1 to n), and, generate signalling module by system version information, the emitting side coded modulation information corresponding with each message bit stream and other signaling combination together on the other hand, and obtain signaling symbols stream by the coded modulation of signaling.
Then, obtained n emitting side symbol stream and the signaling symbols stream obtained are carried out framing and generate baseband symbol stream by framing and baseband signalling generation module.
Fig. 3 is the block diagram of coded modulation process in the specific embodiment of the present invention.In the present embodiment, different message bit stream can distinguish with different receiving mode, such as fixed reception program stream (a
1), mobile reception program stream (a
2), outdoor program receiving stream (a
n) etc.
By Fig. 3 to a message bit stream a in above-mentioned Fig. 2
1in code modulating method be specifically described, omit message bit stream a at this
2to a
nthe repeat specification based on same principle.
In Fig. 2, code modulation module 1 comprises coding module, Bit interleaving block and constellation mapping block, and so, correspondingly, in step S11a, coded modulation process specifically comprises following 3 steps:
Step 1: according to the predictive encoding rule in emitting side coded modulation information 1 and system version information 1, by message bit stream a
1be divided into the block of message bit stream one by one of pre-sizing, if i-th message bit stream block is [b
i, 0, b
i, 1..., b
i, K-1], wherein K is the length of each message bit stream block, then is first bitstream block by each message bit stream block forecast, if i-th the first bitstream block is [c
i, 0, c
i, 1..., c
i, N-1], wherein N is the length of each the first bitstream block, wherein, comprises the information such as code check, code length in coded modulation scheme information, and coding mode can use BCH code, LDPC code, RS code and their cascade, and the present invention is not construed as limiting this;
Step 2: Bit interleaving block according to the predetermined bit interlacing rule in emitting side coded modulation information 1 and system version information 1, by each the first bitstream block [c
i, 0, c
i, 1..., c
i, N-1] interweave be a second bitstream block [d
i, 0, d
i, 1..., d
i, N-1].Can be regarded as, [d
i, 0, d
i, 1..., d
i, N-1] be by exchange [c
i, 0, c
i, 1..., c
i, N-1] the order of element obtain.Wherein, the information such as code check, code length, order of modulation are comprised in coded modulation scheme information; And
Step 3: constellation mapping block is regular and system version information 1 according to the predetermined constellation mapping in emitting side coded modulation information 1, by each the second bitstream block [d
i, 0, d
i, 1..., d
i, N-1] be mapped as an emitting side symbol stream and coded modulation symbol stream block [s
i, 0, s
i, 1..., s
i, N/L-1], wherein L is order of modulation.First each is organized the second bit stream by a L component by constellation mapping block is N/L group, then is a plural number by the L of an every a small group bit mapping, thus obtains [the s that length is N/L
i, 0, s
i, 1..., s
i, N/L-1].Wherein comprise the information such as code check, constellation mapping exponent number in coded modulation scheme information.
The embodiment of the present invention additionally provides a kind of information processing method going out system version information and message bit stream for demodulation coding.Fig. 4 is the schematic flow sheet of a kind of information processing method for receiving terminal in the specific embodiment of the present invention.
With reference to figure 4, the information processing method for receiving terminal comprises the steps:
Step S21: receive baseband symbol stream, this baseband symbol stream is obtained by the information processing method for transmitting terminal in above-mentioned Fig. 1;
Step S22: recover signaling by sub-step S22a and parse system version information and corresponding with emitting side coded modulation information and through the receiver side coded modulation information of channel from this signaling, further, recover to extract the receiver side symbol stream corresponding with emitting side symbol stream by sub-step S22b; And
Step S23: be a corresponding message bit stream by corresponding receiver side symbol stream demodulation coding according to recovered receiver side coded modulation information and system version information, can go out at least one message bit stream according to the demand demodulation coding of receiving terminal.
Particularly in step S22a, from signaling, split rule according to predetermined field, predetermined field demapping rule fractionation demapping goes out field value, thus parse system version information and receiver side coded modulation information.
Wherein, according to demapping corresponding relation, the first field value in the field value go out split demapping, the second field value, the 3rd field value and the 4th field value, parse code length, code check and the constellation mapping exponent number in system version information and receiver side coded modulation information respectively.
Fig. 5 is the block diagram of the information process of receiving terminal in the specific embodiment of the present invention.Be specifically described for the information processing method of receiving terminal and information processor in above-mentioned Fig. 4 by Fig. 5.
Receiving terminal is after carrying out synchronous and equilibrium treatment to baseband symbol stream, on the one hand, combine and resolve signalling module institute by extracting receiver side symbol flow module and recover to resolve other signalings of coming, extraction to obtain corresponding to the emitting side symbol stream with transmitting terminal and have passed through each receiver side symbol stream (1 to n) of channel.On the other hand, not only recover to parse system version information by resolving signalling module, and recover to parse corresponding with each emitting side coded modulation information and through each receiver side coded modulation information (1 to n) of channel.
At least one demodulation coding module according to recovered at least one receiver side coded modulation information and system version information, by least one receiver side symbol stream correspondingly demodulation coding be at least one message bit stream.The method of receiving terminal demodulation coding is corresponding with the method for transmitting terminal modulating-coding.
Fig. 6 is the block diagram of demodulation coding process in the specific embodiment of the present invention.Without loss of generality, by Fig. 6, the demodulation coding method for message bit stream 1 in above-mentioned steps S23 is specifically described.
De-mapping module is regular and system version information 1 according to the predetermined constellation demapping in receiver side coded modulation information 1, by each receiver side symbol stream block [t
i, 0, t
i, 1..., t
i, N/L-1] namely receiver side symbol stream 1 demapping be that one group of the one LLR flows block [l
i, 0, l
i, 1..., l
i, N-1].Wherein [t
i, 0, t
i, 1..., t
i, N/L-1] with an emitting side symbol stream block [s of transmitting terminal
i, 0, s
i, 1..., s
i, N/L-1] corresponding, [l
i, 0, l
i, 1..., l
i, N-1] with a second bitstream block [d of transmitting terminal
i, 0, d
i, 1..., d
i, N-1] corresponding.Wherein, L is constellation mapping exponent number.Constellation demapping module by each coded modulation symbol de-maps be L LLR, this LLR represent log-likelihood ratio be to the bit of transmitting terminal be 0 or be 1 estimation.Wherein, the information such as code check, order of modulation is comprised in coded modulation scheme information.
Each LLR, according to the predetermined bit deinterleaving rule in receiver side coded modulation information 1 and system version information 1, is flowed block [l by bit de-interleaving block
i, 0, l
i, 1..., l
i, N-1] deinterleaving is that the 2nd LLR flows block [m
i, 0, m
i, 1..., m
i, N-1].Namely, [m
i, 0, m
i, 1..., m
i, N-1] by exchange [l
i, 0, l
i, 1..., l
i, N-1] the order of element obtain.The switching method of deinterleaving is corresponding with the method for transmitting terminal Bit Interleave, makes [m
i, 0, m
i, 1..., m
i, N-1] order and corresponding first bitstream block [c
i, 0, c
i, 1..., c
i, N-1] order corresponding.Wherein comprise the information such as code check, code length, order of modulation in coded modulation scheme information.
Each the 2nd LLR, according to predetermined decoding rule and system version information 1 in receiver side coded modulation information 1, is flowed block [m by decoding module
i, 0, m
i, 1..., m
i, N-1] be decoded as a message bit stream block [
b i, 0,
b i, 1...,
b i, K-1], a message bit stream block [b of this message bit stream block that institute's decoding goes out and transmitting terminal
i, 0, b
i, 1..., b
i, K-1] corresponding, thus demodulation coding goes out a corresponding message bit stream a
1.
Row cite an actual example and further describe technical scheme of the present invention below.
< embodiment 1>
In the information processing system of the present embodiment, transmitting terminal is set as, only for a message bit stream, therefore only have a code modulation module.Correspondingly, receiving terminal also only has a demodulation coding module.In addition, by this default for comprising two versions, i.e. version 1.0 and version 1.1.
Generate signalling module in Fig. 2 and be respectively correspondingly mapped as corresponding each information field to emitting side coded modulation information by the predetermined field mapping ruler such as shown in following table 1 to table 4 according to system version information, and these information fields and other signaling fields are spliced rule according to the predetermined field of table 5 stitch together, and coded modulation is carried out to signaling.
Table 1: the field mappings rule between system version information and the first field value
| First field value | Corresponding system version |
| “00010000” | 1.0 |
| “00010001” | 1.1 |
| Other | Undefined |
Table 2: the field mappings rule between code length and the second field value
| Second field value | Code length |
| “0” | 64800 |
| “1” | 16200 |
Table 3: code check, between system version information and the 3rd field value field mappings rule
| 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 | 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 | Undefined |
Form 4: the field mappings rule 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 | Undefined |
Form 5: part predetermined 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 comprises version 1.0 and version 1.1, and by Fig. 2, the system version that such as, in three message bit streams message bit stream 1 adopts is 1.0, and the system version that out of Memory bit stream 2 and message bit stream 3 adopt is 1.1.So, by concrete numerical value in the coded modulation scheme that lists these three message bit streams with following table 6 respectively.
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 according to system version information, code length and code check by coding module, and this group group information bit is encoded to one group of group first bit stream.
Particularly as known from Table 6, when system version information and emitting side coded modulation information meet pattern example for the moment, input information bits flow point is that size is the message bit stream block of 21600 bits one by one by coding module, and with first predictive encoding rule sized by each message bit stream block forecast will be 64800 the first bitstream block.The present embodiment is not described specifically the first predictive encoding rule.
When system version information and emitting side coded modulation information meet pattern example two, input information bits flow point is also that size is the message bit stream block of 21600 bits one by one by coding module, and by the second predictive encoding rule, each block message bit block is encoded to the first bitstream block that size is 64800 bits.Second predictive encoding rule is different from the first predictive encoding rule.The present embodiment is not also described specifically the second predictive encoding rule.
When system version information and emitting side coded modulation information meet pattern example three, input information bits flow point is that size is the message bit stream block of 43200 bits one by one by coding module, and by the second predictive encoding rule, each block message bit block is encoded to the first bitstream block that size is 64800.Second predictive encoding rule is obviously different from the first or second predictive encoding rule.The present embodiment is not also described specifically the 3rd predictive encoding rule.
Each first bitstream block is carried out Bit Interleave according to system version information, code length, code check and constellation mapping exponent number and obtains the second bitstream block by the Bit interleaving block of transmitting terminal, that is change putting in order of element in the first bitstream block, but do not change element content.This module interweaves with different predetermined bit interlacing rules respectively when pattern example one, two, three, that is the method changing order of elements is different.The present embodiment is not described specifically these three kinds of predetermined bit interlacing rules.
Each second bitstream block is mapped to emitting side symbol stream according to code length, code check, constellation mapping exponent number and system version information by the constellation mapping block of transmitting terminal, is formed as coded modulation symbol stream block.
As shown in table 7, when system version information and emitting side coded modulation information conforms pattern example one or pattern example two, constellation mapping block first by a block length be 64800 the second bitstream block be divided into 16200 groups by 4 bit a small group.Then be a plural number according to table 7 by 4 of each group bit mappings, thus obtain the coded modulation symbol stream block that length is 16200.Such as, when when pattern example one, if a certain group four bits are " 1010 ", it is mapped as A by constellation mapping block
10.[A
0, A
1..., A
15] and [B
0, B
1..., B
15] different.The present embodiment is to [A
0, A
1..., A
15] and [B
0, B
1..., B
15] concrete numerical value do not describe.
Table 7: pattern example one, two constellation mapping method
| Bit group | Pattern example one | Pattern example two |
| “0000” | A 0 | B 0 |
| “0001” | A 1 | B 1 |
| “0010” | A 2 | B 2 |
| “0011” | A 3 | B 3 |
| “0100” | A 4 | B 4 |
| “0101” | A 5 | B 5 |
| “0110” | A 6 | B 6 |
| “0111” | A 7 | B 7 |
| “1000” | A 8 | B 8 |
| “1001” | A 9 | B 9 |
| “1010” | A 10 | B 10 |
| “1011” | A 11 | B 11 |
| “1100” | A 12 | B 12 |
| “1101” | A 13 | B 13 |
| “1110” | A 14 | B 14 |
| “1111” | A 15 | B 15 |
As shown in table 8, when system version information and emitting side coded modulation information conforms pattern example three, constellation mapping block first by a block length be 64800 the second bitstream block be that a small group is divided into 32400 groups by 2 bits.Then be a plural number according to table 8 by 2 of each group bit mappings, thus obtain the coded modulation symbol stream block that length is 32400.
Table 8: pattern example three constellation mapping method
| Bit group | Coded modulation symbol |
| “00” | 1+1i |
| “01” | 1-1i |
| “10” | -1+1i |
| “11” | -1-1i |
Signaling and the emitting side symbol stream obtained finally are carried out framing and generate baseband signalling by transmitting terminal.
Receiving terminal is after sync equalizing, obtain signaling by signaling resolution module and therefrom extract the first field value, the second field value, the 3rd field value and the 4th field value, and parsing system version information and the receiver side coded modulation information corresponding to emitting side coded modulation information according to table 1 to table 5.
Same after sync equalizing, also obtain the receiver side symbol stream corresponding with emitting side symbol stream by extracting receiver side symbol flow module.
Receiver side symbol stream demodulation coding is message bit stream according to the receiver side coded modulation information extracted and system version information by demodulation coding module.
One group of group coding stream of modulation symbols demapping is that one group of group the one LLR flows according to code length, code check, constellation mapping exponent number and system version information by constellation demapping module.Such as, when system version information and receiver side coded modulation information conforms pattern example one or two, constellation demapping module flows block according to a LLR of the receiver side symbol stream block demapping that each length is 16200 by table 7 to be length be 64800 bits.When system version information and receiver side coded modulation information conforms pattern example three, constellation demapping module flows block according to a LLR of the receiver side symbol stream block demapping that each length is 32400 by form 8 to be length be 64800 bits.The bit of LLR one_to_one corresponding in second bitstream block of transmitting terminal in an one LLR stream block.The present embodiment is not construed as limiting predetermined demapping rule, specific algorithm.
It is that the 2nd LLR flows block that each LLR is flowed block according to carrying out deinterleaving than deinterleave rule according to code length, code check and constellation mapping exponent number with system version information by bit de-interleaving block.
Each to be organized the 2nd LLR according to code length, code check and system version information by decoding module, and to flow block decoding be one group of message bit stream block, and it is corresponding with one group of message bit stream block of transmitting terminal.Such as, when system version information and receiver side coded modulation information conforms pattern example for the moment, decoding module translates to obtain 21600 bits according to the first predetermined decoding rule corresponding with the first predictive encoding rule by 64800 LLR, when system version information and receiver side coded modulation information conforms pattern example two, decoding module translates to obtain 21600 bits according to the second predetermined decoding rule corresponding with the second predictive encoding rule by 64800 LLR, when system version information with when receiving side coded modulation information conforms pattern example three, decoding module translates to obtain 43200 bits according to the 3rd predetermined decoding rule corresponding with the 3rd predictive encoding rule by 64800 LLR.The concrete grammar of the present embodiment to above-mentioned first and second and three predetermined decoding rules does not describe.
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 (10)
1. an information processing method, for system version information and message bit stream are carried out coded modulation to send, is characterized in that having following steps:
According to emitting side coded modulation information and described system version information by message bit stream described in each respectively coded modulation be emitting side symbol stream, further, combined to system version information, the emitting side coded modulation information corresponding with each message bit stream and other signalings coded modulation of carrying out is obtained signaling symbols stream; And
All described emitting side symbol stream and described signaling symbols stream are carried out framing and generates baseband symbol stream.
2. information processing method as claimed in claim 1, is characterized in that:
Wherein, described system version information and described emitting side coded modulation information are correspondingly mapped as each information field according to predetermined field mapping ruler, and each information field described is spliced rule with other signalings described according to predetermined field splice mutually.
3. information processing method as claimed in claim 2, is characterized in that:
Wherein, described predetermined field mapping ruler comprises:
Different described system version information, described emitting side coded modulation information should be related to the field value being mapped as respectively and having corresponding predetermined bit length according to mapping pair,
Described predetermined field splicing rule comprises:
By corresponding with described system version information, described emitting side coded modulation information and the described field value with described predetermined bit length carries out sequence according to preset order rule splices.
4. information processing method as claimed in claim 3, is characterized in that:
Wherein, described emitting side coded modulation packets of information contains: code length, code check and constellation mapping exponent number,
Described field value comprises: the first field value matched respectively with described system version information, described code length, described code check and described constellation mapping exponent number, the second field value, the 3rd field value and the 4th field value,
Described mapping corresponding relation comprises:
Different described first field values is gone out based at least one version correspondence in described system version information;
Different described second field value is gone out based on different described code length correspondences;
Carry out common correspondence based on described code check and described system version information and go out Bu Tong described 3rd field value; And
Different described 4th field value is gone out based on different described constellation mapping exponent number correspondences.
5. information processing method as claimed in claim 1, is characterized in that:
Wherein, according to described emitting side coded modulation information and described system version information, message bit stream described in each is carried out coded modulation respectively and comprises following sub-step:
According to described emitting side coded modulation information and described system version information, described message bit stream is carried out encoding and is divided into each first bitstream block of pre-sizing;
According to described emitting side coded modulation information and described system version information, be the second bitstream block by described in each, the first bitstream block interweaves; And
According to predetermined constellation mapping rule, mapping is carried out to described second bitstream block and obtain emitting side symbol stream.
6. an information processing method, goes out system version information and message bit stream for demodulation coding, it is characterized in that, have following steps:
Receive baseband symbol stream, this baseband symbol stream is obtained by information processing method as claimed in claim 1;
Recover signaling and from this signaling, parse described system version information and corresponding with described emitting side coded modulation information and through the receiver side coded modulation information of channel, further, recover to extract the receiver side symbol stream corresponding with described emitting side symbol stream; And
Be message bit stream described at least one according to recovered described receiver side coded modulation information and described system version information by described receiver side symbol stream demodulation coding.
7. information processing method as claimed in claim 6, is characterized in that:
Wherein, from described signaling, split rule according to predetermined field, predetermined field demapping rule fractionation demapping goes out field value, thus parse described system version information and described receiver side coded modulation information.
8. information processing method as claimed in claim 7, is characterized in that:
Wherein, described receiver side coded modulation packets of information contains: code length, code check and constellation mapping exponent number,
According to demapping corresponding relation, the first field value in the described field value split demapping gone out, the second field value, the 3rd field value and the 4th field value, parse described code length, described code check and the described constellation mapping exponent number in described system version information and described receiver side coded modulation information respectively.
9. an information processor, for carrying out coded modulation to enter by system version information and message bit stream
Row sends, and it is characterized in that, comprising:
Coded modulation unit, for according to emitting side coded modulation information and described system version information by message bit stream described in each respectively coded modulation be emitting side symbol stream, further, combined to system version information, the emitting side coded modulation information corresponding with each message bit stream and other signalings coded modulation of carrying out is obtained signaling symbols stream; And
Framing generation unit, for carrying out framing by all described emitting side symbol stream and described signaling symbols stream and generate baseband symbol stream.
10. an information processor, goes out system version information and message bit stream for demodulation coding, it is characterized in that, comprising:
Receiving element, for receiving baseband symbol stream, this baseband symbol stream obtained by information processor as claimed in claim 9;
Extract resolution unit, for recovering signaling and parse described system version information and corresponding with described emitting side coded modulation information and through the receiver side coded modulation information of channel from this signaling, further, recover to extract the receiver side symbol stream corresponding with described emitting side symbol stream; And
Demodulation coding unit, for being message bit stream described at least one according to recovered described receiver side coded modulation information and described system version information by described receiver side symbol stream demodulation coding.
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| CN105515722B (en) | 2020-12-22 |
| CN107453841B (en) | 2020-12-18 |
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