CN107920351A - A kind of Wireless security communication method based on physical layer - Google Patents
A kind of Wireless security communication method based on physical layer Download PDFInfo
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- CN107920351A CN107920351A CN201711412158.XA CN201711412158A CN107920351A CN 107920351 A CN107920351 A CN 107920351A CN 201711412158 A CN201711412158 A CN 201711412158A CN 107920351 A CN107920351 A CN 107920351A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of Wireless security communication method based on physical layer, comprise the following steps：Time-frequency code non-stationary processing is carried out to the messaging parameter in original signal using end is transmitted wirelessly；Waveform conversion is carried out using weighted score Fourier transformation method to the signal after processing with reference to waveform encryption parameter；Signal after gained waveform is converted carries out up-conversion and enhanced processing, and is sent by antenna to physical layer；Using the wireless receiving termination collection of letters number, waveform reduction is carried out by down-converted and according to the wireless transmission end waveform encryption parameter to prestore, and non-stationary processing is carried out to the signal after reduction, reduction obtains original signal.Original signal is encrypted the present invention and waveform conversion protection, further lifts the security of wireless signal, promotion signal anti-intercepting and capturing performance, the secure communication of signal, the security performance of lifting system are realized in wireless communication physical layer.
Description
Technical field
The invention belongs to the technical field of wireless communication, is related to a kind of Wireless security communication method based on physical layer.
Background technology
Wireless communication technique is used widely in every profession and trade, and secure wireless communication performance obtains extensive concern always.
Secure wireless communication performance mainly includes two parts, one is raw information is encrypted by Encryption Algorithm so that recipient
Even if data flow can be parsed, raw information cannot be still restored；The second is physical layer is encrypted so that recipient receives
To after wireless signal, it is impossible to restore data flow, let alone raw information is reduced.
Physical layer wireless security communication at present is mainly combined scheme using spread spectrum, frequency hopping or frequency hopping spread spectrum, is modulating
In mode, generally using the common modulation system such as BPSK, QPSK, OFDM.Such a communication mode has the disadvantage that：When
Messaging parameter has certain feature, after carrying out statistical analysis by high-speed data acquisition, can parse messaging parameter, security performance
It is poor.Second, modulation system does not possess secured feature, recipient can recover data flow by simple process, and security performance is poor.
Therefore, only information is encrypted transmission in traditional communication, although being difficult to obtain information content for transmission,
But other side can still reduce messaging parameter, implement to attack for messaging parameter.
The content of the invention
Problems to be solved by the invention are that data transmission procedure cannot ensure information safety in existing communication means, modulation
The problem of mode does not possess secured feature, and recipient can recover data flow by simple process, and security performance is poor.
Technological means for solving problem is to provide a kind of Wireless security communication method based on physical layer, including following
Step：
Step 1, using transmit wirelessly end in original signal messaging parameter carry out time-frequency code non-stationary processing；
Step 2, with reference to waveform encryption parameter to step 1 processing after signal using weighted score Fourier transformation method into
Traveling wave fractal transform；
Signal after the conversion of step 2 gained waveform, is carried out up-conversion and enhanced processing by step 3, and by antenna transmission
To physical layer；
Step 4, the signal transmitted by using wireless receiving end receiving step 3, by down-converted and according to prestoring
Transmit wirelessly end waveform encryption parameter and carry out waveform reduction, and non-stationary processing is carried out to the signal after reduction, reduction obtains former
Beginning signal.
Further, as a preferred technical solution of the present invention：Messaging parameter in the step 1 in original signal
Including at least information symbol rate or spread-spectrum code chip speed, spreading code repetition period and carrier frequency.
Further, as a preferred technical solution of the present invention：The communication in original signal is joined in the step 1
Number carries out time-frequency code non-stationary processing, specifically includes：Using the power spectrum of Direct Sequence Spread Spectrum method processing signal.
Further, as a preferred technical solution of the present invention：Signal after step 1 is handled in the step 2
Medium wave deformation is changed to the waveform by constellation rotation.
Further, as a preferred technical solution of the present invention：The step 4, which further includes, carries out received signal
Low noise amplification processing.
Invention effect is that the present invention uses above-mentioned technical proposal, can produce following technique effect：
The present invention proposes a kind of Wireless security communication method based on physical layer, in wireless signal modulation mode, passes through
Waveform mapping mode, is transformed into another communication system, recipient only sets same waveform to add by a kind of communication system
Close parameter, could carry out waveform recovery.Then, non-stationary signal Construction treatment is carried out in symbol field, time-domain and frequency domain, made
Signal is detectd debit and cannot count messaging parameter, lift wireless signal transmission security performance on a physical layer.
This method carries out non-stationary processing in time, frequency, code domain to information, is difficult to messaging parameter feature on time-frequency plane
Statistics, while modulation system is encrypted so that signal constellation (in digital modulation) figure is inconsistent with original signal, improves wireless signal
Transmission security.Waveform signal layer protects communication waveforms, further lifts the security of wireless signal, promotion signal
Anti-intercepting and capturing performance, while be encrypted in modulation system, increase the security of signal.
The method of the invention realizes the secure communication of signal, the security performance of lifting system in wireless communication physical layer.
Brief description of the drawings
Fig. 1 is the flow diagram of the Wireless security communication method of the invention based on physical layer.
Fig. 2 is the schematic diagram of non-stationary processing procedure in the present invention.
Fig. 3 is medium wave fractal transform schematic diagram of the present invention.
Embodiment
Hereinafter, it is described in detail based on attached drawing for the present invention.
As shown in Figure 1, the present invention devises a kind of Wireless security communication method based on physical layer, this method is used for physics
Layer, and based on wireless transmission end and wireless receiving end, this method includes transmitting wirelessly and receiving two processes, specifically includes following
Step：
Step 1, using transmit wirelessly end in original signal messaging parameter carry out time-frequency code non-stationary processing.
In the present invention, the messaging parameter in original signal includes information symbol rate or spread-spectrum code chip speed, spreading code weight
Multiple cycle and carrier frequency, it is non-stationary characteristic, parametric characteristics receive count after present non-stationary, Shi Fei partners are not
Messaging parameter can be parsed, lifts information privacy.
The present embodiment carries out time-frequency code non-stationary processing to the messaging parameter in the beginning signal, as shown in Fig. 2, specific bag
Include：
(1) using the power spectrum of direct sequence spread spectrum skill processing signal, the power spectrum of signal is reduced, is instantaneously believed with realizing
Number frequency spectrum is hidden.
(2) using the data symbol for becoming length (cycle), to eliminate the cyclo-stationary of fixed data character rate introducing.
(3) using the speed change for becoming the duration, to eliminate following for the mechanical periodicity of fixed data character rate introducing
Ring stationarity.
(4) using the spread spectrum symbol for becoming length (cycle), to eliminate the cyclo-stationary that fixed spread spectrum symbol speed introduces.
(5) using the speed change for becoming the duration, followed with what the mechanical periodicity of the fixed spread spectrum symbol speed of elimination introduced
Ring stationarity.
(6) Frequency carrier signal is used, to eliminate the cyclo-stationary of fixed carrier frequency introducing.
(7) using the carrier frequency variation for becoming the duration, to eliminate following for the mechanical periodicity of fixed carrier frequency introducing
Ring stationarity.
(8) in order to avoid the information of the correlation introducing between the above-mentioned control parameter respectively changed is related
Property, each control parameter must be statistical iteration.
Step 2, with reference to waveform encryption parameter to step 1 processing after signal using weighted score Fourier transformation method into
Traveling wave fractal transform；Using weighted score Fourier Transform Technique, communication waveforms are transformed into another form, the ripple converted
Shape is as shown in Figure 3.And the waveform make it that wireless receiving end only sets same waveform encryption parameter, it is extensive waveform could to be carried out
It is multiple.
In the present embodiment, using weighted score Fourier transformation method, by 9 waveform encryption parameters, step 1 is obtained
Signal in BPSK waveforms become and be referred to as 16QAM waveforms by constellation rotation.
Signal after the conversion of step 2 gained waveform, is carried out up-conversion and enhanced processing by step 3, and by antenna transmission
To physical layer.
Step 4, reception of wireless signals are the inverse process that wireless signal is sent, and are sent out using wireless receiving end receiving step 3
The signal sent, handles by low noise amplification, down-converted and is carried out according to the wireless transmission end waveform encryption parameter to prestore
Waveform reduces, and non-stationary processing is carried out to the signal after reduction, and reduction obtains original signal.
Should during, wireless transmission end waveform encryption parameter that wireless receiving end prestores, wireless receiving end only prestores hair
After sending end waveform encryption parameter, initial data reduction could be carried out, otherwise cannot be parsed.Since planisphere is by encryption ginseng
After number encryption, deformity change occurs, after only wireless receiving end obtains whole waveform encryption parameters, it is extensive planisphere could to be carried out
Multiple, otherwise received signal cannot parse.
Thus, by carrying out non-stationary signal Construction treatment in symbol field, time-domain and frequency domain so that original signal quilt
Messaging parameter cannot be counted by detecing debit, lift wireless signal transmission security performance on a physical layer, lift the confidentiality of information.
It should be noted that described above is only the preferred embodiment of the present invention, it will be appreciated that for art technology
For personnel, some changes and improvements can also be made on the premise of the technology of the present invention design is not departed from, these are included in
In protection scope of the present invention.
Claims (5)
1. a kind of Wireless security communication method based on physical layer, it is characterised in that comprise the following steps：
Step 1, using transmit wirelessly end in original signal messaging parameter carry out time-frequency code non-stationary processing；
Step 2, weighted score Fourier transformation method is used into traveling wave to the signal after step 1 processing with reference to waveform encryption parameter
Fractal transform；
Step 3, the signal after step 2 gained waveform is converted carries out up-conversion and enhanced processing, and is sent by antenna to thing
Manage layer；
Step 4, using wireless receiving end receiving step 3 transmitted by signal, it is by down-converted and wireless according to what is prestored
Transmitting terminal waveform encryption parameter carries out waveform reduction, and non-stationary processing is carried out to the signal after reduction, and reduction obtains original letter
Number.
2. the Wireless security communication method according to claim 1 based on physical layer, it is characterised in that
Messaging parameter in the step 1 in original signal includes at least information symbol rate or spread-spectrum code chip speed, spreading code
Repetition period and carrier frequency.
3. the Wireless security communication method according to claim 1 based on physical layer, it is characterised in that
Time-frequency code non-stationary processing is carried out to the messaging parameter in original signal in the step 1, is specifically included：Using direct sequence
Row spectrum spreading method handles the power spectrum of signal.
4. the Wireless security communication method according to claim 1 based on physical layer, it is characterised in that
Signal medium wave deformation after step 1 is handled in the step 2 is changed to the waveform by constellation rotation.
5. the Wireless security communication method according to claim 1 based on physical layer, it is characterised in that
The step 4 is further included carries out low noise amplification processing to received signal.
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| CN201711412158.XA CN107920351A (en) | 2017-12-23 | 2017-12-23 | A kind of Wireless security communication method based on physical layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023134488A1 (en) * | 2022-01-11 | 2023-07-20 | 华为技术有限公司 | Communication method and apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222326A (en) * | 2008-01-18 | 2008-07-16 | 哈尔滨工业大学 | Communications security and decipherment method based on four-weighted score Fourier transform |
| CN103078817A (en) * | 2013-01-30 | 2013-05-01 | 哈尔滨工业大学 | Weighted score Fourier transform-based variable parameter spread spectrum sequence low-detection probability signal emitting and receiving method |
| CN103746804A (en) * | 2014-01-17 | 2014-04-23 | 哈尔滨工业大学 | Secure communication method based on multi-parameter fractional Fourier transform and constellation scrambling |
| CN103957027A (en) * | 2014-05-23 | 2014-07-30 | 哈尔滨工业大学 | Weighted score Fourier transformation domain signal transmission method based on multi-sequence combined spread spectrum |
-
2017
- 2017-12-23 CN CN201711412158.XA patent/CN107920351A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222326A (en) * | 2008-01-18 | 2008-07-16 | 哈尔滨工业大学 | Communications security and decipherment method based on four-weighted score Fourier transform |
| CN103078817A (en) * | 2013-01-30 | 2013-05-01 | 哈尔滨工业大学 | Weighted score Fourier transform-based variable parameter spread spectrum sequence low-detection probability signal emitting and receiving method |
| CN103746804A (en) * | 2014-01-17 | 2014-04-23 | 哈尔滨工业大学 | Secure communication method based on multi-parameter fractional Fourier transform and constellation scrambling |
| CN103957027A (en) * | 2014-05-23 | 2014-07-30 | 哈尔滨工业大学 | Weighted score Fourier transformation domain signal transmission method based on multi-sequence combined spread spectrum |
Non-Patent Citations (1)
| Title |
|---|
| 张雪梅: "基于HHT的非平稳信号特征提取与参数估计方法研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023134488A1 (en) * | 2022-01-11 | 2023-07-20 | 华为技术有限公司 | Communication method and apparatus |
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