CN109039538A - A kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with - Google Patents
A kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with Download PDFInfo
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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
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/71—Interference-related aspects the interference being narrowband interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- 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
- H04L1/0045—Arrangements at the receiver end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
- H04B2001/7152—Interference-related aspects with means for suppressing interference
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Abstract
A kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with, belongs to spread spectrum communication and signal of communication processing technology field.It sends data and carries out message sink coding, information source intertexture, modulation, channel coding, channel interleaving, direct expansion and frequency hopping feeding channel；Receiving end carries out dehop, despreading, solution channel interleaving, channel decoding, demodulation, information source deinterleaving and source coding to received data；Wherein, the prime codes family sequence that the prime number parameter 1 that information source interweaves, source coding is exported according to interleave parameter control unit generates is interleaved and deinterleaves respectively to input symbol as interleaving address；Channel interleaving and channel deinterleave the prime codes family sequence that the prime number parameter 2 exported according to interleave parameter control unit generates and input symbol are interleaved and are deinterleaved respectively as interleaving address.The method of the invention has stronger signal transmission ability of anti-interception and information hiding, and realizes flexibly, using adaptability extensively and requirement of being close to the users.
Description
Technical field
The present invention relates to a kind of prime codes races for the fast frequency hopping system that is concerned with to combine deinterleaving method, belongs at signal of communication
Manage technical field.
Background technique
It is information-based modern war, architecture and fast reaction based on " examining/beating/to ruin/comment " integrated operation thinking
Concentrated reflection, indispensable basis are that have reliable information transmission link between all kinds of platforms for constituting weapon system.It considers
The opening of wireless propagation environment and the complexity of battlefield surroundings, the wireless communication system applied to weapon platform must have
Very strong noiseproof feature.It is traditional for novel interference transmission power is big, interference band is wide, the feature more than jamming signal type
Spread spectrum is difficult to cope with.
Resistant DS Spread Spectrum System carries out spread spectrum to information symbol sequence using the pseudo noise code of high code rate, when despreading
Spread-spectrum signal can effectively restore after passing through correlator, and interference signal is suppressed due to uncorrelated.Frequency-hopping system is then according to jump
Frequency pattern converts carrier frequency, and solution does not meet frequency hopping pattern signal when jumping is suppressed.The jump of relevant fast frequency hopping system
It is fast fast, and there is inherent frequency-time diversity mechanism, in conjunction with both direct expansion and frequency-hopping system advantage, have stronger anti-dry
Disturb ability.
Mapping relations reindexing sequence is woven through, burst error is switched into random error.The present invention is to relevant fast jump
Sequence after display system source coding and channel coding is recombinated in the way of intertexture, and for information source and channel
Different situations adjust interleave parameter, in the case where slightly adding complexity, are encrypted to information source data, improve system
Concealment, while further enhancing the anti-interference ability of relevant fast frequency hopping system.
Summary of the invention
It is an object of the invention to further increase the concealment of relevant fast frequency hopping system and communication reliability, one is proposed
Prime codes race of the kind for the fast frequency hopping system that is concerned with combines deinterleaving method.
A kind of relevant fast frequency hopping system packet that the prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with is relied on
Interleave parameter control unit is included, signal processing module is sent and receives signal processing module；
It sends signal processing module and is located at transmitting terminal, by source coding unit, information source interleave unit, modulation unit, channel
Coding unit, channel interleaving unit, direct expansion unit and frequency hopping unit composition；
It receives signal processing module and is located at receiving end, unit, channel are deinterleaved by dehop unit, despread unit, channel
Decoding unit, demodulating unit, information source deinterleave unit and source coding unit composition；
The connection relationship of relevant each module of fast frequency hopping system is as follows:
Interleave parameter control unit is connected with transmission signal processing module and reception signal processing module respectively, specifically:
Interleave parameter control unit is by parameter p1Respectively with send signal processing module in information source interleave unit and reception signal processing
Information source in module deinterleaves unit and is connected；Interleave parameter control unit is by parameter p2Respectively and in transmission signal processing module
Channel interleaving unit deinterleaves unit with the channel received in signal processing module and is connected；
The source coding unit sent in signal processing module is connected with information source interleave unit, information source interleave unit and modulation
Unit is connected, and modulation unit is connected with channel encoding unit, and channel encoding unit is connected with channel interleaving unit, channel interleaving list
Member is connected with direct expansion unit, and direct expansion unit is connected with frequency hopping unit；
The dehop unit received in signal processing module is connected with despread unit, and despread unit and channel deinterleave unit
It is connected, channel deinterleaves unit and channel decoding unit, channel decoding unit are connected with demodulating unit, demodulating unit and information source solution
Interleave unit is connected, and information source deinterleaves unit and is connected with source coding unit.
The function of relevant each module of fast frequency hopping system is as follows:
The function of interleave parameter control unit is to export prime number according to sourcesink requirement and sending and receiving end signal-to-noise ratio demand
Parameter 1 and prime number parameter 2；
Wherein, prime number parameter 1 and prime number parameter 2 are the prime number value of prime codes and prime number square yard；
It gives information source interleave unit and information source deinterleaves the prime number parameter 1 of unit, be denoted as p1；Give channel interleaving unit
And channel deinterleaves the prime number parameter 2 of unit, is denoted as p2；
Information source interleave unit and information source deinterleave unit and generate transmitting terminal information source de-interleaving receiving end according to prime number parameter 1
The address that information source deinterleaves；
Channel interleaving unit and channel deinterleave unit and generate transmitting terminal channel interleaving solution receiving end according to prime number parameter 2
The address that channel deinterleaves；
The function of source coding unit is that the transmission data to transmitting terminal carry out message sink coding；
The function of information source interleave unit is carried out to the symbol after transmitting terminal message sink coding based on interleave parameter control unit
The source symbol of the prime number parameter 1 of output interweaves；
The function of modulation unit is that the symbol after interweaving to transmitting terminal information source is modulated；
The function of channel encoding unit is to carry out channel coding to the symbol of transmitting terminal modulated unit output；
The function of channel interleaving unit is to carry out the symbol of transmitting terminal channel coding unit output based on interleave parameter
The intertexture of the prime number parameter 2 of control unit output；
The function of direct expansion unit is to carry out Direct Sequence Spread Spectrum to the symbol of transmitting terminal channel interleave unit output；
The function of frequency hopping unit is that the symbol exported to transmitting terminal through direct expansion unit carries out frequency hopping；
The function of dehop unit is to export transmitting terminal frequency hopping unit to channel, then the received symbol in received end carries out
Dehop；
The function of despread unit is that solution Direct Sequence Spread Spectrum operation is carried out to the symbol of receiving end dehop unit output；
The function that channel deinterleaves unit is to carry out the symbol of the despread unit in receiving end output based on interleave parameter control
The deinterleaving operation of the prime number parameter 2 of unit output processed；
The function of channel decoding unit is that the symbol progress channel decoding of unit output is deinterleaved to receiving end channel；
The function of demodulating unit is to believe receiving end to decoded symbol to demodulate；
The function that information source deinterleaves unit is to be based on interleave parameter control unit to the demodulation symbol of receiving end demodulation output
The prime number parameter 1 of output is deinterleaved；
The function of source coding unit is the data progress source coding that unit output is deinterleaved to receiving end information source.
A kind of joint deinterleaving method for the fast frequency hopping system that is concerned with, its step are as follows:
Step 1: source coding unit carries out message sink coding to the transmission data that relevant fast frequency hopping system waits for, information source is exported
Symbol after coding；
Wherein, source coding unit is located in the transmission signal processing module of transmitting terminal；
It is interleaved Step 2: sending the symbol after the message sink coding of step 1 output to information source interleave unit, obtains letter
Symbol after the intertexture of source, specifically:
Step 2.1 information source interleave unit generates prime codes race sequence according to the prime number parameter 1 that interleave parameter control unit exports
Column 1；
The message sink coding that step 2.2 information source interleave unit exports prime codes family sequence 1 as interleaving address to step 1
Symbol afterwards is interleaved, the symbol after output information source intertexture；
Step 3: the symbol after modulation unit interweaves to the information source that step 2 exports is modulated, symbol after output modulation；
Step 4: symbol carries out channel coding after the modulation that channel encoding unit exports step 3, channel coding is exported
Symbol afterwards；
Step 5: symbol carries out channel friendship after the channel coding that channel interleaving unit exports step 4 channel encoding unit
It knits, exports symbol after channel interleaving, specifically:
Step 5.1 channel interleaving unit generates prime codes race sequence according to the prime number parameter 2 that interleave parameter control unit exports
Column 2；
The channel coding that step 5.2 channel interleaving unit exports prime codes family sequence 2 as interleaving address to step 4
Symbol is interleaved afterwards, exports symbol after channel interleaving；
Step 6: symbol carries out Direct Sequence Spread Spectrum after the channel interleaving that direct expansion unit exports step 5, direct expansion is exported
Symbol afterwards；
Wherein, after the channel interleaving that direct expansion unit exports step 5 symbol and locally generated pseudo noise code carry out mutually with
Direct Sequence Spread Spectrum operation is completed in operation, exports symbol after direct expansion；
Wherein, pseudo noise code, i.e. Pseudo-Noise code, abbreviation PN code；
Step 7: the carrier frequency of symbol carries out frequency hopping after the direct expansion that frequency hopping unit exports step 6, symbol after frequency hopping is exported；
Wherein, frequency hopping takes one of frequency hopping in symbol, intersymbol frequency hopping and Synthesized Frequency Hopping Three models；
Wherein, Synthesized Frequency Hopping is the frequency hopping that frequency hopping and intersymbol stepped-frequency interval occur in digit symbol；
Step 8: symbol carries out being transmitted to receiving end by channel after the frequency hopping of step 8 output；
Step 9: receiving end receives the symbol of transmission, and the symbol received is solved through dehop unit
Frequency hopping exports dehop symbol；
Wherein, dehop mode is identical as the frequency-hopping mode that step 7 uses；
Step 10: receiving end despread unit carries out solution Direct Sequence Spread Spectrum operation to the dehop symbol that step 9 exports,
Symbol after output solution direct expansion；
Wherein, the dehop symbol that despread unit exports step 9 carries out phase and operation with locally generated pseudo noise code
Complete solution Direct Sequence Spread Spectrum operation, symbol after output solution direct expansion；
Wherein, the local pseudo noise code generated in locally generated pseudo noise code and step 6 is identical；
Step 11: symbol carries out solution channel solution after the channel of receiving end deinterleaves the solution direct expansion that unit exports step 10
Interweave, symbol after output channel deinterleaves, specifically:
Step 11.1 channel deinterleaves unit and generates prime codes race according to the prime number parameter 2 that interleave parameter control unit exports
Sequence 2；
Step 11.2 channel deinterleaves the solution direct expansion that unit exports prime codes family sequence 2 as interleaving address to step 10
Symbol is deinterleaved afterwards, symbol after output channel deinterleaves；
Step 12: symbol carries out solution channel after receiving end channel decoding unit deinterleaves the channel that step 11 exports
Decoding, symbol after output channel decoding；
Step 13: symbol demodulates after the channel decoding that demodulating unit exports step 12, accorded with after output demodulation
Number；
Step 14: symbol is based on interleave parameter control unit after information source deinterleaves the demodulation that unit exports step 13
The prime number parameter 1 of output is deinterleaved, symbol after output information source deinterleaves, specifically:
Step 14.1 information source deinterleaves unit and generates prime codes race according to the prime number parameter 1 that interleave parameter control unit exports
Sequence 1；
Step 14.2 information source deinterleaves the demodulation that unit exports prime codes family sequence 1 as interleaving address to step 13
Symbol is deinterleaved afterwards, symbol after output information source deinterleaves；
Step 15: symbol carries out source coding after source coding unit deinterleaves the information source that step 14 exports, it is defeated
Data are received out.
Beneficial effect
A kind of prime codes race for the fast frequency hopping system that is concerned with of the present invention combines deinterleaving method, compared with prior art, tool
It has the advantages that:
1. generating interleaving address sequence using prime codes race to realize the intertexture in relevant fast frequency hopping system, realize flexibly,
Without the Dimension Characteristics for deliberately considering matrix afterwards；
2. information source and channel strip interleave parameter can jointly control, extensive using adaptability, requirement of being close to the users；
3. the higher and big amount of storage feelings that are delayed that the method for the invention improves interleaving technology in existing frequency hopping communications
Condition can relax system complexity demand and simplify equipment；
4. the method for the invention slightly increases complexity, so compared with the unused communication system for interweaving and deinterleaving
And it can improve the error-resilient performance beyond Error Correction of Coding error correcting capability when there is consecutive mistake, and reduce what signal cracked
Probability improves signal transmission ability of anti-interception and information hiding；
5. the method for the invention especially has preferable inhibitory effect to single tone jamming and narrowband interference.
Detailed description of the invention
It is relevant fast that Fig. 1 is that a kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with of the present invention is relied on
The structural schematic diagram of frequency-hopping system；
Fig. 2 is related to intertexture single in a kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with of the present invention
The flow diagram of member；
Fig. 3 is in the embodiment of the present invention to the emulation knot of relevant fast frequency hopping system different interleaving mode rejecting single-tone jamming performance
Fruit figure；
Wherein, abscissa is Eb/No, that is, unit symbol energy and noise power spectral density ratio, and ordinate is error symbol
Rate.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples and detailed description.
Embodiment 1
The present embodiment describes a kind of specific implementation of the joint deinterleaving method of relevant fast frequency hopping system of the present invention, realizes
Structural schematic diagram is as shown in Figure 1.
As seen from Figure 1, transmission data enter information source interleave unit by source coding unit and carry out based on prime codes race square
The information source of battle array interweaves, the parameter p that information source interleave parameter issues in interleave parameter control unit1；Symbol after information source intertexture
It number is modulated by modulation unit, the modulated symbols of output are sent to channel encoding unit and carry out channel coding, channel coding
Enter channel interleaving unit afterwards and carry out channel interleaving, channel interleaving unit utilizes the parameter p of interleave parameter control unit output2It is raw
Channel interleaving is carried out at prime codes race matrix, then to the symbol after channel coding, the symbol after intertexture is introduced into direct expansion unit
Direct Sequence Spread Spectrum is completed, enters back into after frequency hopping unit carries out frequency hopping and exports to transmission.
After undergoing noise and interference in channel, the signal received first passes around dehop and despread unit carry out solution jump and
De-spreading operation enters back into channel and deinterleaves unit.Channel deinterleaves unit and receives parameter p from interleave parameter control unit2It generates
Channel deinterleaving is carried out with the identical prime codes race matrix that channel interleaving unit uses, the symbol input that channel exports after deinterleaving
Channel decoding unit；Symbol after channel decoding unit deinterleaves channel carries out channel decoding, exports symbol after channel decoding,
It enters back into demodulating unit to be demodulated, symbol after output demodulation.Symbol after demodulation enters information source and deinterleaves unit, and information source solution is handed over
It knits unit and receives parameter p from " interleave parameter control unit "1Generate the identical prime codes race matrix used with information source interleave unit
Carry out information source deinterleaving, the symbol after output information source deinterleaving.Symbol after information source deinterleaves enters the progress of source coding unit
Output receives data after source coding.
Embodiment 2
It is jumped specific to the present embodiment when single tone jamming jamming-to-signal ratio is lower than 10dB or narrowband interference jamming-to-signal ratio is lower than 3dB
Frequency unit reconciliation frequency hopping unit does not access this system.
When not accessing frequency hopping unit reconciliation frequency hopping unit, corresponding operating in summary of the invention: step 7 and step 9
It deletes, remaining sequence of steps shifts to an earlier date.
Embodiment 3
When implementing specific to the present embodiment, when Eb/No is higher than 30dB, direct expansion unit and despread unit do not access this and are
System.
When deleting direct expansion unit and when despread unit, the corresponding operating in summary of the invention: step 6 and step 10 are also deleted,
Remaining sequence of steps shifts to an earlier date.
Embodiment 4
In the specific implementation, direct expansion unit and modulation unit can exchange position to the present invention.Corresponding step also exchanges
Sequentially, i.e. step 3 and step 6 exchange sequence；Step 10 and step 13 exchange sequence.
Embodiment 5
A kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with shown in Fig. 1 is relied on relevant fast
In frequency-hopping system, " information source interleave unit and information source deinterleave unit " is collectively referred to as information source interleaving block；" channel interleaving unit and letter
Road deinterleaves unit " it is collectively referred to as channel interleaving module；
Specific to the present embodiment, both information source interleaving block and channel interleaving module select one access system.
When not accessing information source interleaving block, module corresponding to Fig. 1 shifts to an earlier date in order, the corresponding behaviour in summary of the invention
Make: step 2 and step 14 are also deleted, remaining sequence of steps shifts to an earlier date；
When not accessing channel interleaving module, module corresponding to Fig. 1 shifts to an earlier date in order, the corresponding behaviour in summary of the invention
Make: step 5 and step 11 are also deleted, remaining sequence of steps shifts to an earlier date.
Embodiment 6
The present embodiment specifically describes the specific implementation of information source interleaving block and channel interleaving module.
Fig. 2 is related to intertexture single in a kind of prime codes race joint deinterleaving method for the fast frequency hopping system that is concerned with of the present invention
The flow diagram of member.
From Figure 2 it can be seen that deinterleaving unit for information source interleave unit and information source, specific operation process is as follows:
Step A1) the information source interleave unit foundation generation prime codes family sequence 1 of prime number parameter 1；
Step A2) information source interleave unit by summary of the invention step 1 source coding unit export " accorded with after message sink coding
Number " it is transformed into the matrix that dimension is m1 × n1；
Wherein, the row or column of dimension m1 × n1 is less than prime number parameter 1 or the power less than prime number parameter 1, specifically:
A2.1) interweaving if prime codes, when being interweaved with behavior, dimension m1 is less than prime number parameter 1, when with column to interweave, dimension
It spends n1 and is less than prime number parameter 1；
A2.2) interweave if Quadratic Prime Codes, when being interweaved with behavior, dimension m1 is less than square of prime number parameter 1, is with column
When intertexture, dimension n1 is less than square of prime number parameter 1；
Wherein, when it is implemented, further to save time, step A1) and step A2) can at the same Parallel Implementation；
Step A3) dimension of the information source interleave unit according to step A1) the prime codes family sequence 1 and step A2) transformation generated
It is interleaved for the matrix of m1 × n1, specifically: information source interleave unit is by prime codes family sequence 1 as interleaving address to step
A2 the matrix of m1 × n1) is interleaved, the symbol after output information source intertexture；It send to modulation unit；
Step A4) the information source deinterleaving unit foundation generation prime codes family sequence 1 of prime number parameter 1；
Step A5) information source deinterleave unit by summary of the invention step 13 export " symbol after demodulation " be transformed into dimension
For the matrix of m1 × n1；
Wherein, the row or column of dimension m1 × 1n is less than prime number parameter 1 or the power less than prime number parameter 1, specifically:
A5.1 it) being deinterleaved if prime codes, when being interweaved with behavior, dimension m1 is less than prime number parameter 1, when with column to interweave,
Dimension n1 is less than prime number parameter 1；
A5.2 it) is deinterleaved if Quadratic Prime Codes, when being interweaved with behavior, dimension m1 is less than square of prime number parameter 1, with column
When to interweave, dimension n1 is less than square of prime number parameter 1；
Wherein, when it is implemented, further to save time, step A4) and step A5) can at the same Parallel Implementation；
Step A6) dimension of the information source deinterleaving unit according to step A4) the prime codes family sequence 1 and step A5) transformation generated
Degree is that the matrix of m1 × n1 is deinterleaved, specifically: information source deinterleaves unit for prime codes family sequence 1 as deinterleaving address
The matrix of m1 × n1 of step A5) is deinterleaved, the symbol after output information source deinterleaving, the symbol after output information source deinterleaving
Number, it send to source coding unit.
Similarly, unit is deinterleaved for channel interleaving unit and channel, specific operation process is as follows:
Step B1) the channel interleaving unit foundation generation prime codes family sequence 2 of prime number parameter 2；
Step B2) channel interleaving unit by summary of the invention step 4 export " symbol after channel coding " be transformed into dimension
Degree is the matrix of m2 × n2；
Wherein, the row or column of dimension m2 × n2 is less than prime number parameter 2 or the power less than prime number parameter 2, specifically:
B2.1) interweaving if prime codes, when being interweaved with behavior, dimension m2 is less than prime number parameter 2, when with column to interweave, dimension
It spends n2 and is less than prime number parameter 2；
B2.2) interweave if Quadratic Prime Codes, when being interweaved with behavior, dimension m2 is less than square of prime number parameter 2, is with column
When intertexture, dimension n2 is less than square of prime number parameter 2；
Wherein, when it is implemented, further to save time, step B1) and step B2) can at the same Parallel Implementation；
Step B3) dimension of the channel interleaving unit according to step B1) the prime codes family sequence 2 and step B2) transformation generated
It is interleaved for the matrix of m2 × n2, specifically: channel interleaving unit is by prime codes family sequence 2 as interleaving address to step
B2 the matrix of m2 × n2) is interleaved, and the symbol after exporting channel interleaving is sent to direct expansion unit；
Step B4) the channel deinterleaving unit foundation generation prime codes family sequence 2 of prime number parameter 2；
Step B5) channel deinterleaves unit for sign reversing after solution direct expansion that step 10 in summary of the invention exports and at dimension is
The matrix of m2 × n2；
Wherein, the row or column of dimension m2 × n2 is less than prime number parameter 2 or the power less than prime number parameter 2, specifically:
B5.1 it) being deinterleaved if prime codes, when being interweaved with behavior, dimension m2 is less than prime number parameter 1, when with column to interweave,
Dimension n2 is less than prime number parameter 1；
B5.2 it) is deinterleaved if Quadratic Prime Codes, when being interweaved with behavior, dimension m2 is less than square of prime number parameter 1, with column
When to interweave, dimension n2 is less than square of prime number parameter 1；
Wherein, when it is implemented, further to save time, step B4) and step B5) can at the same Parallel Implementation；
Step B6) dimension of the channel deinterleaving unit according to step B4) the prime codes family sequence 2 and step B5) transformation generated
Degree is that the matrix of m2 × n2 is deinterleaved, specifically: channel deinterleaves unit for prime codes family sequence 2 as deinterleaving address
The matrix of m2 × n2 of step B5) is deinterleaved, the symbol after output channel deinterleaving, the symbol after output channel deinterleaving
Number, it send to channel decoding unit.
Embodiment 7
The present embodiment is by taking the relevant fast frequency hopping system there are single tone jamming as an example, to of the present invention a kind of for being concerned with
The simulation implementation process of the prime codes race joint deinterleaving method of fast frequency hopping system is illustrated.
It is above-mentioned there are the relevant fast frequency hopping system centre frequency of single tone jamming be 400MHz, single-tone interference frequency offset is
1MHz, interference signal jamming-to-signal ratio are 30dB, and noise is white Gaussian noise.
Step I, the source symbol after relevant fast frequency hopping system message sink coding is used into random sequence, sends 1000 altogether
Point, character rate 2.5kbps；
Step II, the prime sequence codes to parameter P=37 are sent to carry out information source intertexture source symbol, after showing that information source interweaves
Signal；
The specific implementation rule of prime sequence codes is as follows:
Prime codes are finite field gf (P2) upper mold P multiplication as a result, it is k (m, l)=ml (modP) that it, which generates expression formula, and
0 < m, l < P；
Wherein P is prime number, and k indicates that ordinate label, m indicate code word serial number, and l indicates abscissa label.
Such as the prime codes constructed when P=7 are as shown in table 1 below.
Table 1 is based on the prime codes matrix of GF (P2)
| I | ki0 | ki1 | ki2 | ki3 | ki4 | ki5 | ki6 |
| k1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| k2 | 0 | 2 | 4 | 6 | 1 | 3 | 5 |
| k3 | 0 | 3 | 6 | 2 | 5 | 1 | 4 |
| k4 | 0 | 4 | 1 | 5 | 2 | 6 | 3 |
| k5 | 0 | 5 | 3 | 1 | 6 | 4 | 2 |
| k6 | 0 | 6 | 5 | 4 | 3 | 2 | 1 |
Deinterleaving method interleaving address sequence uses nonzero value and non-natural collating sequence in prime sequence codes, i.e., upper table 1
Shown in the middle lower right corner, except first trip and first, font is relatively thick, biggish 5 row of number, 6 column totally 30 numbers, as intertexture side
Address sequence in method.
Deinterleaving method proposed by the present invention interweaves simple and realizes flexibly than ranks, because when specific implementation, it is only necessary to give
Prime codes information out, memory space can reduce significantly, only need storing one row prime number value.
The value of prime P is determined according to every group information symbol numbers in interleaving process, as long as guaranteeing the member of prime codes matrix
Element is greater than the number of information symbol.When interweave last column for proceeding to prime codes matrix when often information symbol number
An inadequate column, as long as successively choosing the element composition address sequence no more than remaining information symbol number in corresponding column at this time
?.And ranks intertexture will form complete matrix, therefore the value of row and column according to the number of the information symbol to interweave every time
It to be determined by calculating.
Step III, the signal after the information source for exporting above-mentioned steps II interweaves carries out Direct Sequence Spread Spectrum, and spread spectrum is using length
The PN code that degree is 1024.Channel coding carried out to the signal after spread spectrum, coding use code rate for 1/2 convolutional code, code after coding
First rate is 5.12Mbps.The prime codes matrix interleaver to parameter P=47 is sent to carry out letter the channel symbol after channel coding
It is consistent in road intertexture, prime codes matric generating method and step II；
Step IV, the signal after above-mentioned channel interleaving is subjected to BPSK modulation and frequency hopping, data is sent to different frequencies
It is sent on point.Design parameter and operation are as follows: the base-band spread-spectrum signal after intertexture carries out dipole inversion, send to interpolation filter and carries out
Base band interpolation and intermediate frequency interpolation, intermediate frequency nominal frequency are 400MHz.BPSK modulation then is carried out using frequency-hopping carrier, and to jump
The mode of frequency sends signal.Frequency hopping rate is 20000hop/s, and totally 80 frequency point random selections, frequency hopping bandwidth are
200MHz, frequency point start for 350MHz, and 2.5MHz is interval, until 450MHz.If signal sampling rate is 1024MHz, base band
Data sampling rate is 25.6MHz；
Step V, after the receiving end of relevant fast frequency hopping system synchronizes, the frequency hopping pattern and direct sequence of transmitting terminal have been obtained
Spread PN code used；After the signal containing interference and noise for receiving transmitting terminal sending, Frequency Hopping Signal solution is jumped and is demodulated；
Step VI, the signal after jumping signal to solution using prime codes matrix identical with originator parameter P=47 carries out channel
It deinterleaves；
Step VII, despreading and channel decoding process are carried out to the signal after deinterleaving, reused and originator parameter P=
37 identical prime codes matrixes jump the signal progress information source deinterleaving after signal to solution, obtain the symbol of information source transmission.
The simulation result for the fast frequency hopping system rejecting single-tone jamming performance that is concerned in the embodiment of the present invention is as shown in figure 3, plus single-tone
The jamming-to-signal ratio of interference is JSR=30, and frequency deviation fp is 1MHz, and Eb/No variation range is 15 to arrive 20dB, and bit error rate numerical value is all in table
It is by 10 times, every time 106A data volume emulate and averagely obtain.
From figure 3, it can be seen that the bit error rate value when Eb/No changes from 15dB to 20dB, when using no deinterleaving method
Highest, performance is worst, and least obvious with signal-to-noise ratio increase downward trend；The bit error rate and no intertexture errored bit that ranks interweave
Rate is close, and performance is slightly good, but bit error rate is reduced relatively limited；The performance of BER that prime codes and Quadratic Prime Codes interweave
It is better than ranks intertexture, two groups of data have overlapping, both show that performance is suitable；Pseudo random interleaving performance is best, but with signal-to-noise ratio
Increase, prime codes and Quadratic Prime Codes felt properties gradually approach pseudo random interleaving.Intertexture proposed in this paper as can be seen from Figure 3
Method has a preferable inhibitory effect to single tone jamming, and the performance of interference is inhibited to be better than common ranks deinterleaving method, and with
The performance of pseudo random interleaving method is not much different.
Prime codes race interweaves and will interweave in all respects better than ranks, and ranks intertexture is especially better than in amount of storage, with
This simultaneously, prime codes race proposed by the present invention deinterleaving method is compared on interleaving delay and amount of storage with pseudo random interleaving method
Occupy certain advantage.
The above is presently preferred embodiments of the present invention, and it is public that the present invention should not be limited to embodiment and attached drawing institute
The content opened.It is all not depart from the lower equivalent or modification completed of spirit disclosed in this invention, both fall within the model that the present invention protects
It encloses.
Claims (1)
1. a kind of prime codes race for the fast frequency hopping system that is concerned with combines deinterleaving method, it is characterised in that: that is relied on is relevant fast
Frequency-hopping system includes interleave parameter control unit, sends signal processing module and receive signal processing module；
It sends signal processing module and is located at transmitting terminal, by source coding unit, information source interleave unit, modulation unit, channel coding
Unit, channel interleaving unit, direct expansion unit and frequency hopping unit composition；
It receives signal processing module and is located at receiving end, unit is deinterleaved by dehop unit, despread unit, channel, channel decodes
Unit, demodulating unit, information source deinterleave unit and source coding unit composition；
The connection relationship of relevant each module of fast frequency hopping system is as follows:
Interleave parameter control unit is connected with transmission signal processing module and reception signal processing module respectively, specifically: interweave
Parameter control unit is by parameter p1Respectively with send signal processing module in information source interleave unit and reception signal processing module
In information source deinterleave unit be connected；Interleave parameter control unit is by parameter p2Respectively with send signal processing module in channel
Interleave unit deinterleaves unit with the channel received in signal processing module and is connected；
The source coding unit sent in signal processing module is connected with information source interleave unit, information source interleave unit and modulation unit
Be connected, modulation unit is connected with channel encoding unit, and channel encoding unit is connected with channel interleaving unit, channel interleaving unit and
Direct expansion unit is connected, and direct expansion unit is connected with frequency hopping unit；
The dehop unit received in signal processing module is connected with despread unit, and despread unit deinterleaves unit phase with channel
Even, channel deinterleaves unit and channel decoding unit, channel decoding unit are connected with demodulating unit, and demodulating unit and information source solution are handed over
It knits unit to be connected, information source deinterleaves unit and is connected with source coding unit.
The function of relevant each module of fast frequency hopping system is as follows:
The function of interleave parameter control unit is to export prime number parameter according to sourcesink requirement and sending and receiving end signal-to-noise ratio demand
1 and prime number parameter 2；
Wherein, prime number parameter 1 and prime number parameter 2 are the prime number value of prime codes and prime number square yard；
It gives information source interleave unit and information source deinterleaves the prime number parameter 1 of unit, be denoted as p1；Give channel interleaving unit and
Channel deinterleaves the prime number parameter 2 of unit, is denoted as p2；
Information source interleave unit and information source deinterleave unit and generate transmitting terminal information source de-interleaving receiving end information source according to prime number parameter 1
The address of deinterleaving；
Channel interleaving unit and channel deinterleave unit and generate transmitting terminal channel interleaving solution receiving end channel according to prime number parameter 2
The address of deinterleaving；
The function of source coding unit is that the transmission data to transmitting terminal carry out message sink coding；
The function of information source interleave unit is to carry out exporting based on interleave parameter control unit to the symbol after transmitting terminal message sink coding
Prime number parameter 1 source symbol interweave；
The function of modulation unit is that the symbol after interweaving to transmitting terminal information source is modulated；
The function of channel encoding unit is to carry out channel coding to the symbol of transmitting terminal modulated unit output；
The function of channel interleaving unit is control based on interleave parameter to the symbol of transmitting terminal channel coding unit output
The intertexture of the prime number parameter 2 of unit output；
The function of direct expansion unit is to carry out Direct Sequence Spread Spectrum to the symbol of transmitting terminal channel interleave unit output；
The function of frequency hopping unit is that the symbol exported to transmitting terminal through direct expansion unit carries out frequency hopping；
The function of dehop unit is to export transmitting terminal frequency hopping unit to channel, then the received symbol in received end carries out solution jump
Frequently；
The function of despread unit is that solution Direct Sequence Spread Spectrum operation is carried out to the symbol of receiving end dehop unit output；
The function that channel deinterleaves unit is carried out to the symbol of the despread unit in receiving end output based on interleave parameter control list
The deinterleaving operation of the prime number parameter 2 of member output；
The function of channel decoding unit is that the symbol progress channel decoding of unit output is deinterleaved to receiving end channel；
The function of demodulating unit is to believe receiving end to decoded symbol to demodulate；
The function that information source deinterleaves unit is to be exported to the demodulation symbol of receiving end demodulation output based on interleave parameter control unit
Prime number parameter 1 be deinterleaved；
The function of source coding unit is the data progress source coding that unit output is deinterleaved to receiving end information source.
A kind of joint deinterleaving method for the fast frequency hopping system that is concerned with, its step are as follows:
Step 1: source coding unit carries out message sink coding to the transmission data that relevant fast frequency hopping system waits for, message sink coding is exported
Symbol afterwards；
Wherein, source coding unit is located in the transmission signal processing module of transmitting terminal；
It is interleaved Step 2: sending the symbol after the message sink coding of step 1 output to information source interleave unit, obtains information source friendship
Symbol after knitting, specifically:
Step 2.1 information source interleave unit generates prime codes family sequence 1 according to the prime number parameter 1 that interleave parameter control unit exports；
After the message sink coding that step 2.2 information source interleave unit exports prime codes family sequence 1 as interleaving address to step 1
Symbol is interleaved, the symbol after output information source intertexture；
Step 3: the symbol after modulation unit interweaves to the information source that step 2 exports is modulated, symbol after output modulation；
Step 4: symbol carries out channel coding after the modulation that channel encoding unit exports step 3, accorded with after exporting channel coding
Number；
Step 5: symbol carries out channel interleaving after the channel coding that channel interleaving unit exports step 4 channel encoding unit,
Symbol after output channel interleaving, specifically:
Step 5.1 channel interleaving unit generates prime codes family sequence 2 according to the prime number parameter 2 that interleave parameter control unit exports；
Step 5.2 channel interleaving unit will accord with after channel coding that prime codes family sequence 2 exports step 4 as interleaving address
It number is interleaved, exports symbol after channel interleaving；
Step 6: symbol carries out Direct Sequence Spread Spectrum after the channel interleaving that direct expansion unit exports step 5, accorded with after exporting direct expansion
Number；
Wherein, symbol carries out phase and operation with locally generated pseudo noise code after the channel interleaving that direct expansion unit exports step 5
Direct Sequence Spread Spectrum operation is completed, symbol after direct expansion is exported；
Wherein, pseudo noise code, i.e. Pseudo-Noise code, abbreviation PN code；
Step 7: the carrier frequency of symbol carries out frequency hopping after the direct expansion that frequency hopping unit exports step 6, symbol after frequency hopping is exported；
Wherein, frequency hopping takes one of frequency hopping in symbol, intersymbol frequency hopping and Synthesized Frequency Hopping Three models；
Wherein, Synthesized Frequency Hopping is the frequency hopping that frequency hopping and intersymbol stepped-frequency interval occur in digit symbol；
Step 8: symbol carries out being transmitted to receiving end by channel after the frequency hopping of step 8 output；
Step 9: receiving end receives the symbol of transmission, and dehop is carried out to the symbol received through dehop unit,
Export dehop symbol；
Wherein, dehop mode is identical as the frequency-hopping mode that step 7 uses；
Step 10: receiving end despread unit carries out solution Direct Sequence Spread Spectrum operation, output to the dehop symbol that step 9 exports
Symbol after solution direct expansion；
Wherein, the dehop symbol that despread unit exports step 9 mutually complete with operation with locally generated pseudo noise code
Solve Direct Sequence Spread Spectrum operation, symbol after output solution direct expansion；
Wherein, the local pseudo noise code generated in locally generated pseudo noise code and step 6 is identical；
Step 11: symbol carries out solution channel solution friendship after the channel of receiving end deinterleaves the solution direct expansion that unit exports step 10
It knits, symbol after output channel deinterleaves, specifically:
Step 11.1 channel deinterleaves unit and generates prime codes family sequence according to the prime number parameter 2 that interleave parameter control unit exports
2；
Step 11.2 channel deinterleaves unit and will accord with after solution direct expansion that prime codes family sequence 2 exports step 10 as interleaving address
It number is deinterleaved, symbol after output channel deinterleaves；
Step 12: symbol carries out solution channel solution after receiving end channel decoding unit deinterleaves the channel that step 11 exports
Code, symbol after output channel decoding；
Step 13: symbol demodulates after the channel decoding that demodulating unit exports step 12, symbol after output demodulation；
Step 14: symbol is exported based on interleave parameter control unit after information source deinterleaves the demodulation that unit exports step 13
Prime number parameter 1 be deinterleaved, output information source deinterleave after symbol, specifically:
Step 14.1 information source deinterleaves unit and generates prime codes family sequence according to the prime number parameter 1 that interleave parameter control unit exports
1；
Step 14.2 information source deinterleaves unit and will accord with after demodulation that prime codes family sequence 1 exports step 13 as interleaving address
It number is deinterleaved, symbol after output information source deinterleaves；
Step 15: symbol carries out source coding after source coding unit deinterleaves the information source that step 14 exports, output is connect
Receive data.
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