CN106972929A - A kind of shared random digit generation method of Human disturbance auxiliary - Google Patents
A kind of shared random digit generation method of Human disturbance auxiliary Download PDFInfo
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- CN106972929A CN106972929A CN201710290028.7A CN201710290028A CN106972929A CN 106972929 A CN106972929 A CN 106972929A CN 201710290028 A CN201710290028 A CN 201710290028A CN 106972929 A CN106972929 A CN 106972929A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
Abstract
The present invention relates to a kind of shared random digit generation method of Human disturbance auxiliary, including：Receive direction originating party and send pilot frequency sequence or the training sequence arranged in advance；Originating party generates source signal and Human disturbance and selects the sending method of source signal, calculates the reception signal of each antenna of recipient, carries out sample quantization processing, generates the shared random number corresponding with each recipient；The reception mode of each recipient's selection signal, sampling, quantization receive signal, generate shared random number each corresponding with originating party；Originating party carries out shared random number negotiation with each recipient, corrects the inconsistent position in the shared random number of both sides' generation, and random number is finally shared in generation.The invention enables communicating pair in normal course of communications, shared random number is directly extracted from signal is received, recipient is avoided channel estimation process, it is easy to be combined with existing communication protocol, it is ensured that receiving signal has more preferable randomness.Simultaneously by sending Human disturbance, intercept probability of the eavesdropping side to transmission signal is reduced.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of shared random number life of utilization Human disturbance auxiliary
Into method.
Background technology
In recent years, wireless communication technology is quickly grown, and communication security starts to turn into focus of concern.Wire communication is led to
Wire medium completion is crossed, the security for greatly improving communication between wire medium the characteristics of physical isolation is utilized.And for
For radio communication, the communication information is sent by the form of broadcast, and transmission range is big, scope is wide, is that people's communication band is come
Easily it is ravesdropping while convenience, it is necessary to ensure communication security using tighter security mechanism.In existing radio communication peace
In entirety system, shared random number has extremely important effect, and the shared random number distributed in advance can be as wireless terminal
Authentication information, can be used as the generation seed of ciphering sequence.It is wireless whole with the appearance of the 5th third-generation mobile communication technology
The quantity at end will be in explosive increase, it is therefore desirable to which more safety is with easily sharing random number ways of distribution.
In wireless communications, send signal and carry out Free propagation in space, eventually arrive at recipient, its propagation path is
Random, i.e., wireless channel is a kind of natural stochastic source.And for legal radio communication both sides, studied table
Bright, down channel has reciprocity thereon, i.e., it is believed that channel parameter is constant within coherence time, legitimate correspondence both sides can lead to
Cross the channel parameter of channel estimation acquisition between the two.Therefore the wireless channel between legitimate correspondence both sides has measurability again.Profit
Random number, which is shared, with wireless channel these intrinsic feature extractions has become an important study hotspot.
However, channel information mainly is obtained by using channel estimation in shared generating random number scheme at present, and therefrom
Shared random number is extracted, following two problems are primarily present：First, the antenna number that originating party possesses often is much larger than recipient's node institute
The antenna number possessed, the signal handling capacity that both sides possess has greatest differences.For example under cellular mobile communication scene, hair
Side（Base station）It is equipped with aerial array（Such as MIMO）, channel quantity sharp rises, recipient（Mobile station）Complete large volumes of channels estimation
Cost it is very big；2nd, renewals for sharing random number places one's entire reliance upon the change of nature channel, when channel variation is slower, influences
The renewal rate and generation length of shared random number, reduce security performance.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of shared random digit generation method of Human disturbance auxiliary, makes
Legitimate correspondence both sides are obtained in normal course of communications, directly from the shared random number of middle extraction is sent and received signal, make recipient
The process of channel estimation is avoided, the dependence to natural channel is reduced, believed while sending Human disturbance reduction eavesdropping side sending
Number intercept probability, it is easy to be combined with existing communication protocol.
The present invention is achieved through the following technical solutions：
A kind of shared random digit generation method of Human disturbance auxiliary, comprises the following steps：
Step 1, reception direction originating party send pilot frequency sequence or the training sequence arranged in advance, and originating party is according to pilot frequency sequence or in advance
The training sequence of agreement calculates the channel estimation value between its own antenna and recipient's antenna；
Step 2, originating party generate source signal to be sent for recipient, and source signal is the random letter for sharing generating random number
Number, to be sent the general communication signal or the random signal and general communication signal that are loaded with business datum or signaling information
Both combinations；
Step 3, originating party calculate channel kernel according to step 1 gained channel estimation value, and generate Human disturbance；Originating party selection is treated
The sending method of source signal is sent, while all or part of antenna of originating party selection sends source signal to recipient, and determines that this connects
Reception signal amplitude and phase on debit's reception antenna；
Step 4, originating party send source signal and Human disturbance simultaneously, are generated according to the channel estimation value, step 2 that are obtained in step 1
Source signal to be sent, the sending method that selects of step 3 and recipient's receiving side signal formula for arranging in advance calculate recipient day
The reception signal of line, originating party generates the shared random number corresponding with recipient；
Step 5, recipient's docking collection of letters number carry out a sample quantization processing, and generate the shared random number corresponding with originating party；
Step 6, originating party and recipient carry out uniformity negotiation to respective shared random number, correct differing in shared random number
Position is caused, and generates originating party and the finally shared random number of recipient.
Also comprise the following steps：
Step 7, perform subsequent step successively again by return to step 1 or step 2, update finally shared random number.
Originating party is calculated when recipient is multiple antennas, in step 4 connects in the reception signal of all antennas of recipient, step 5
Debit carries out sample quantization processing to the reception signal on all antennas.
When there is multiple recipients, comprise the following steps：
Step 1, each recipient send pilot frequency sequence or the training sequence arranged in advance to originating party, originating party according to pilot frequency sequence or
The training sequence arranged in advance calculates the channel estimation value between its own antenna and each recipient's antenna；
Step 2, originating party generate source signal to be sent for each recipient, and source signal is for sharing the random of generating random number
Signal, general communication signal or the random signal and the general communication letter for being loaded with business datum or signaling information to be sent
Number both combination；
Step 3, originating party generate Human disturbance according to step 1 gained channel estimation value to each recipient's channel kernel, and selection is treated
The sending method of source signal is sent, selects all or part of antenna to send source signal respectively for each recipient, and it is true respectively
Reception signal amplitude and phase on fixed each all antennas of recipient；
Step 4, originating party send source signal and Human disturbance simultaneously, are generated according to the channel estimation value, step 2 that are obtained in step 1
Source signal to be sent, the sending method that selects of step 3 and recipient's receiving side signal formula for arranging in advance calculate each receive
The reception signal of Fang Suoyou antennas, the reception signal of all antennas of each recipient of originating party respectively to calculating carries out sampling quantity
Change is handled, and the shared random number corresponding with each recipient is generated respectively；
Step 5, each recipient docking, which are collected mail, number carries out a sample quantization processing, and generate it is corresponding with originating party it is shared at random
Number；
Step 6, originating party and each recipient carry out uniformity negotiation to respective shared random number, correct in shared random number
Inconsistent position, and generate the originating party finally shared random number corresponding with each recipient.
Channel estimation can use least square method in step 1, and be completed within coherence time.
Source signal can be used as using pseudo-random sequence in step 2.
Channel zero definition space is as follows in step 3：If the channel matrix between legitimate correspondence both sides is, then kernel, its
In, x represents the vector in kernel.
Sample quantization processing mode in step 5 can use uniform quantization mode, and quantification manner is known to communicating pair.
Uniformity consults that Cascade algorithms or Winnow algorithms can be used in step 6.
The present invention compared with prior art, with following obvious advantage：
1st, the present invention using recipient's node receive signal stochastic behaviour progress encryption in physical layer, recipient's node without
Under conditions of channel estimation, from recipient's random signal, shared random number is directly extracted, it is ensured that the safety of shared random number
Property, the link that recipient in the shared random digit generation method of tradition carries out channel estimation is reduced, the dependence to natural channel is reduced
Property, it is easy to control；Ensure shared random number distribution using channel reciprocity, the stochastic behaviour having in itself using signal ensures altogether
Random number security is enjoyed, relative to traditional shared random digit generation method, for originating party and the not reciprocity feelings of recipient's resource
Under condition, recipient need not carry out substantial amounts of channel estimation computing, it is easy to accomplish, it is a kind of encryption method of lightweight.
2nd, the communication process of the shared generating random number of the present invention can simultaneously be carried out with normal course of communications, not increase extra
Communication steps, be easy to be combined with existing communication protocol；The shared random number security of generation is simultaneously from letter naturally
The randomness of the randomness and transmission signal in road in itself, people's industry control can be still passed through under conditions of natural channel becomes slowly
The probability distribution of random sequence processed ensures the sufficiently long shared random number of generation, it is ensured that receive signal have it is preferably random
Property, reduce the dependence to natural channel, convenient control.
3rd, the present invention sends Human disturbance while sending and being used for and share the source signal of generating random number, reduces eavesdropping
The received signal to noise ratio of side, increases eavesdropping difficulty, makes the security of the shared random number of generation stronger.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the invention；
Fig. 2 is point-to-point communication protocol procedures schematic diagram of the present invention in the case where recipient is multiple antennas scene；
Fig. 3 is point-to-point communication protocol procedures schematic diagram of the present invention in the case where recipient is single antenna scene；
Fig. 4 is point-to-multipoint delivery protocol procedures schematic diagram of the present invention in the case where recipient is multiple antennas scene；
Fig. 5 is point-to-multipoint delivery protocol procedures schematic diagram of the present invention in the case where recipient is single antenna scene.
Embodiment
The present invention is further detailed explanation with technical scheme below in conjunction with the accompanying drawings, and detailed by preferred embodiment
Describe bright embodiments of the present invention in detail, but embodiments of the present invention are not limited to this.
As shown in figure 1, the shared random digit generation method of the Human disturbance auxiliary of the present invention is as described below.
Step 1, receive direction originating party and send pilot frequency sequence or the training sequence arranged in advance, originating party according to pilot frequency sequence or
The training sequence arranged in advance calculates the channel estimation value between its own antenna and recipient's antenna；The calculating of the channel estimation value can
To use existing use least square method, and completed within coherence time.
Step 2, originating party generate source signal to be sent for recipient, and source signal is for sharing the random of generating random number
Signal, general communication signal or the random signal and the general communication letter for being loaded with business datum or signaling information to be sent
Number both combination.It can be used in the present invention but be not limited to use pseudo-random sequence as source signal.
Step 3, originating party calculate channel kernel according to step 1 gained channel estimation value, and generate Human disturbance；Originating party is selected
The sending method of source signal to be sent is selected, while all or part of antenna of originating party selection sends source signal to recipient, and is determined
Reception signal amplitude and phase on recipient's reception antenna；The sending method of above-mentioned selectable signal is prior art；
Channel zero definition space is as follows：If the channel matrix between legitimate correspondence both sides is, then kernel, wherein, x is represented in kernel
Vector, Human disturbance can at random select out of kernel.
Step 4, originating party send source signal and Human disturbance simultaneously, according to the channel estimation value, step 2 obtained in step 1
Source signal to be sent, the sending method that step 3 is selected and the recipient's receiving side signal formula calculating reception arranged in advance of generation
The reception signal of square antenna, originating party generates the shared random number corresponding with recipient；
Receive signal to be determined by transmission signal and channel, generally order sends signal convolution channel and can be obtained by reception signal.
Step 5, recipient's docking, which are collected mail, number carries out a sample quantization processing, and generate it is corresponding with originating party it is shared at random
Number；
Step 6, originating party and recipient carry out uniformity negotiation to respective shared random number, correct differing in shared random number
Position is caused, and generates originating party and the finally shared random number of recipient；Uniformity consults to calculate using Cascade algorithms or Winnow
Method.
Step 7, perform subsequent step successively again by return to step 1 or step 2, update finally shared random number.
In the present invention, when the recipient is multiple antennas, the step 1 is still performed to step 6, with above-mentioned steps
Difference is：In step 4, originating party needs to calculate recipient's needs pair in the reception signal of all antennas of recipient, step 5
Reception signal on all antennas carries out sample quantization processing.The sample quantization processing mode can use uniform quantization mode, and
Quantification manner is known to communicating pair.
Recipient is probably one in above-mentioned steps 1 ~ 7, it is also possible to multiple, above-mentioned when there is multiple recipients
There is part change step 1 ~ 7, described in detail below：
Step 1, each recipient of multiple recipients send pilot frequency sequence or the training sequence arranged in advance, originating party root to originating party
The training sequence arranged according to pilot frequency sequence or in advance calculates the channel estimation value between its own antenna and each recipient's antenna；
Step 2, originating party generate source signal to be sent for each recipient, and source signal is for sharing the random of generating random number
Signal, general communication signal or the random signal and the general communication letter for being loaded with business datum or signaling information to be sent
Number both combination；
The channel estimation value of step 3, originating party according to obtained by step 1 generates Human disturbance, choosing to the channel kernel of each recipient
The sending method of source signal to be sent is selected, selects all or part of antenna to send source signal respectively for each recipient, and divide
The reception signal amplitude and phase on all antennas of each recipient are not determined；
Step 4, originating party send source signal and Human disturbance simultaneously, are generated according to the channel estimation value, step 2 that are obtained in step 1
Source signal to be sent, the sending method that selects of step 3 and recipient's receiving side signal formula for arranging in advance calculate each receive
The reception signal of Fang Suoyou antennas, the reception signal of all antennas of each recipient of originating party respectively to calculating carries out sampling quantity
Change is handled, and the shared random number corresponding with each recipient is generated respectively.
Step 5, each recipient docking, which are collected mail, number carries out a sample quantization processing, and generate it is corresponding with originating party share with
Machine number；
Step 6, originating party and each recipient carry out uniformity negotiation to respective shared random number, correct in shared random number
Inconsistent position, and generate the originating party finally shared random number corresponding with each recipient.
Embodiment one
As shown in Fig. 2 receive signal using recipient under point-to-point communication scene, directly generated in communication process it is shared with
Under machine number, this scene, the more one end of antenna number is originating party, and the other end is recipient, when transmitting-receiving two-end is multiple antennas, bag
Include the following steps：
Step 100：Receive direction originating party and send pilot frequency sequence or other training sequences arranged in advance, each antenna of originating party, which is utilized, to be connect
The pilot signal of receipts estimates the parameters of channel, and originating party preserves channel parameter, for follow-up evaluation work；This step
In, channel estimation can use but be not limited to least square method（LS）, and need to complete within coherence time；
Step 200：Originating party generates source signal to be sent for the recipient, the source signal can be exclusively for produce it is shared with
Machine number and the random or signal specific that specially generates or to be sent it is loaded with business datum or the routine of signaling information is led to
Believe signal, or above two mode combination；In this step, the m-sequence that the cycle is longer, i.e. pseudo-random sequence conduct can be used
Source signal；
Step 300：Originating party generates Human disturbance according to step 100 gained channel estimation value to channel kernel, selects source signal
Sending method, all or part of antenna of originating party selection sends source signal to the recipient, and determines the oriented recipient hair of institute
The amplitude and phase of signal on the antenna for the number of delivering letters；
Step 400：Originating party sends source signal and Human disturbance simultaneously, using channel parameter, the source signal of generation, sending method and
The recipient's receiving side signal formula appointed in advance calculates the reception signal of each antenna of recipient and carries out sample quantization processing,
The generation shared random number corresponding with the recipient；
Step 500：The mode that recipient's selection is appointed with originating party in advance handles reception signal, and result is sampled,
Also directly the reception signal on all reception antennas can be sampled；And quantification treatment, generation and hair are carried out to sampled result
The corresponding shared random number in side；
In this step, simple uniform quantization mode can be used, it would however also be possible to employ other quantification manners, but quantification manner needs
Known to legitimate correspondence both sides；
Step 600：Originating party is held consultation with recipient, corrects the inconsistent position in the shared random number of both sides' generation, generation is most
Random number is shared eventually；
In this step, uniformity consults simply use Cascade algorithms or Winnow algorithms, can also adopt as needed
Take other negotiation algorithms.
Step 700：, can according to real work demand if desired for the shared random number length of increase or the shared random number of renewal
To select return to step 100 to restart execution, or return to step 200 restarts to perform.
Embodiment two
Transmitting-receiving two-end is single antenna in this example or only recipient is single antenna, and Fig. 3 show the scene that recipient is single antenna,
Implement step identical with embodiment three, difference is：
Step 400：Originating party send source signal, using obtain channel estimation value, generation source signal, sending method and in advance about
The recipient's receiving side signal formula set calculates the reception signal and sample quantization of recipient's antenna, generation and recipient's phase
Corresponding shared random number；
Step 500：The mode that recipient's selection is appointed with originating party in advance handles reception signal, and result is sampled,
Or directly the reception signal on antenna is sampled；And quantification treatment is carried out to sampled result, generate corresponding with originating party
Shared random number；
In above-mentioned steps, simple uniform quantization mode can be used, it would however also be possible to employ other quantification manners, but quantification manner is needed
Want known to legitimate correspondence both sides；
And the subsequent step in embodiment one is performed successively.
Embodiment three,
It is shown in Figure 4, directly generated under point-to-multipoint delivery scene using recipient's reception signal in communication process altogether
Random number is enjoyed, when originating party and each recipient are multiple antennas, is specifically comprised the following steps：
Step 100：Each recipient sends pilot frequency sequence or other training sequences arranged in advance, each antenna of originating party to originating party respectively
The channel parameter between its own antenna and each recipient's antenna is estimated using the pilot signal of reception, originating party preserves channel parameter and used
In follow-up evaluation work；
In this step, channel estimation can use but be not limited to least square method（LS）, and need to complete within coherence time；
Step 200：Originating party generates source signal to be sent respectively for different recipients, and the source signal can be exclusively for production
Raw shared random number and the random or signal specific that specially generates or to be sent it is loaded with business datum or signaling information
General communication signal, or above two mode combination；
In this step, the m-sequence that the cycle is longer can be used, i.e. pseudo-random sequence is used as source signal；
Step 300：Originating party generates Human disturbance, selection to each recipient's channel kernel according to step 1 gained channel estimation value
The sending method of source signal, originating party is selected all for each recipient or difference selected section antenna sends source signal, respectively
It is determined that sending the amplitude and phase of signal on each antenna of signal to each recipient；
Step 400：Originating party sends source signal and Human disturbance simultaneously, using obtained channel parameter, the source signal of generation, sends
Mode and the recipient's receiving side signal formula appointed in advance calculate the reception signal of all antennas of each recipient and sampled
Quantify, generate the shared random number corresponding with each recipient；
Step 500：Each recipient selects the mode appointed in advance with originating party to handle reception signal respectively, and result is carried out
Sampling, directly can also sample to the reception signal on respective all reception antennas；Each recipient enters to sampled result respectively
Row quantification treatment, generates shared random number each corresponding with originating party；
In this step, simple uniform quantization mode can be used, it would however also be possible to employ other quantification manners, but quantification manner needs
Known to legitimate correspondence both sides；
Step 600：Originating party carries out shared random number with each recipient to be consulted, and corrects differing in the shared random number of both sides' generation
Position is caused, random number is finally shared in generation；
In this step, uniformity consults simply use Cascade algorithms or Winnow algorithms, can also adopt as needed
Take other negotiation algorithms.
Step 700：, can be with as some or some recipients need to increase shared random number length or update shared random number
Restart to perform for this or these recipient selection return to step 100, or according to real work needs, be this or these
Recipient's selection return to step 200 restarts to perform.
Example IV
Shown in Figure 5, now originating party and all recipients are single antenna or only each recipient when being single antenna, shown in Fig. 5
For the scene that recipient is single antenna, implement that step is identical with embodiment three, difference is：
Step 400：Originating party send source signal, using obtain channel estimation value, generation source signal, sending method and in advance about
The recipient's receiving side signal formula set calculates the reception signal and sample quantization of each recipient's antenna, and generation is received with each
The corresponding shared random number in side；
Step 500：The mode that each recipient's selection is appointed with originating party in advance handles reception signal, and result is adopted
Sample, or directly the reception signal on reception antenna is sampled；And to sampled result carry out quantification treatment, generation each with hair
The corresponding shared random number in side；
In above-mentioned steps, simple uniform quantization mode can be used, it would however also be possible to employ other quantification manners, but quantification manner is needed
Want known to legitimate correspondence both sides；
And the subsequent step in embodiment three is performed successively.
The present invention ensures shared random number distribution using channel reciprocity, while the stochastic behaviour having in itself using signal
Ensure shared random number security, relative to traditional shared random digit generation method, recipient need not carry out substantial amounts of channel
Estimate computing, it is easy to accomplish；Shared generating random number process can simultaneously be carried out with normal course of communications, not increase additional communication step
Suddenly, it is easy to be combined with existing communication agreement；Random spy of the shared random number security of generation simultaneously from natural channel
Property and send signal stochastic behaviour in itself, still can be random by manually controlling under conditions of natural channel becomes slowly
The probability distribution of sequence ensures to generate the length of shared random number, safe and reliable, it is easy to control；Sending signal is used to complete altogether
Human disturbance is sent while enjoying generating random number in the kernel of channel matrix, listener-in's intercept probability is reduced, improves
The security of the shared random number of generation.
The invention is not limited in above-mentioned embodiment, those skilled in the art can also make a variety of changes accordingly,
But it is any all to cover within the scope of the claims with equivalent or similar change of the invention.
Claims (9)
1. a kind of shared random digit generation method of Human disturbance auxiliary, it is characterised in that：Comprise the following steps：
Step 1, reception direction originating party send pilot frequency sequence or the training sequence arranged in advance, and originating party is according to pilot frequency sequence or in advance
The training sequence of agreement calculates the channel estimation value between its own antenna and recipient's antenna；
Step 2, originating party generate source signal to be sent for recipient, and source signal is the random letter for sharing generating random number
Number, to be sent the general communication signal or the random signal and general communication signal that are loaded with business datum or signaling information
Both combinations；
Step 3, originating party calculate channel kernel according to step 1 gained channel estimation value, and generate Human disturbance；Originating party selection is treated
The sending method of source signal is sent, while all or part of antenna of originating party selection sends source signal to recipient, and determines that this connects
Reception signal amplitude and phase on debit's reception antenna；
Step 4, originating party send source signal and Human disturbance simultaneously, are generated according to the channel estimation value, step 2 that are obtained in step 1
Source signal to be sent, the sending method that selects of step 3 and recipient's receiving side signal formula for arranging in advance calculate recipient day
The reception signal of line, originating party generates the shared random number corresponding with recipient；
Step 5, recipient's docking collection of letters number carry out a sample quantization processing, and generate the shared random number corresponding with originating party；
Step 6, originating party and recipient carry out uniformity negotiation to respective shared random number, correct differing in shared random number
Position is caused, and generates originating party and the finally shared random number of recipient.
2. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1, it is characterised in that：Also wrap
Containing following steps：
Step 7, perform subsequent step successively again by return to step 1 or step 2, update finally shared random number.
3. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1, it is characterised in that：When connecing
When debit is multiple antennas, originating party calculates in the reception signal of all antennas of recipient, step 5 recipient to all days in step 4
Reception signal on line carries out sample quantization processing.
4. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1, it is characterised in that：When depositing
In multiple recipients, comprise the following steps：
Step 1, each recipient send pilot frequency sequence or the training sequence arranged in advance to originating party, originating party according to pilot frequency sequence or
The training sequence arranged in advance calculates the channel estimation value between its own antenna and each recipient's antenna；
Step 2, originating party generate source signal to be sent for each recipient, and source signal is for sharing the random of generating random number
Signal, general communication signal or the random signal and the general communication letter for being loaded with business datum or signaling information to be sent
Number both combination；
Step 3, originating party generate Human disturbance according to step 1 gained channel estimation value to each recipient's channel kernel, and selection is treated
The sending method of source signal is sent, selects all or part of antenna to send source signal respectively for each recipient, and it is true respectively
Reception signal amplitude and phase on fixed each all antennas of recipient；
Step 4, originating party send source signal and Human disturbance simultaneously, are generated according to the channel estimation value, step 2 that are obtained in step 1
Source signal to be sent, the sending method that selects of step 3 and recipient's receiving side signal formula for arranging in advance calculate each receive
The reception signal of Fang Suoyou antennas, the reception signal of all antennas of each recipient of originating party respectively to calculating carries out sampling quantity
Change is handled, and the shared random number corresponding with each recipient is generated respectively；
Step 5, each recipient docking, which are collected mail, number carries out a sample quantization processing, and generate it is corresponding with originating party it is shared at random
Number；
Step 6, originating party and each recipient carry out uniformity negotiation to respective shared random number, correct in shared random number
Inconsistent position, and generate the originating party finally shared random number corresponding with each recipient.
5. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1 or 4, it is characterised in that：
Channel estimation can use least square method in step 1, and be completed within coherence time.
6. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1 or 4, it is characterised in that：
Source signal can be used as using pseudo-random sequence in step 2.
7. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1 or 4, it is characterised in that：
Channel zero definition space is as follows in step 3：If the channel matrix between legitimate correspondence both sides is, then kernel, wherein, x is represented
Vector in kernel.
8. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1 or 4, it is characterised in that：
Sample quantization processing mode in step 5 can use uniform quantization mode, and quantification manner is known to communicating pair.
9. a kind of shared random digit generation method of Human disturbance auxiliary according to claim 1 or 4, it is characterised in that：
Uniformity consults that Cascade algorithms or Winnow algorithms can be used in step 6.
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| CN108768443A (en) * | 2018-05-30 | 2018-11-06 | 中国人民解放军战略支援部队信息工程大学 | Spread spectrum parameter agile method based on random signal |
| CN108964782A (en) * | 2018-07-31 | 2018-12-07 | 深圳大学 | A kind of safety of physical layer Enhancement Method of free space optical-fiber network |
| WO2023240566A1 (en) * | 2022-06-16 | 2023-12-21 | Oppo广东移动通信有限公司 | Sequence generation method and device |
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| CN102223628A (en) * | 2011-05-27 | 2011-10-19 | 中国人民解放军信息工程大学 | Frequency domain encryption method and device for random subcarrier weight |
| CN105933894A (en) * | 2016-04-29 | 2016-09-07 | 金梁 | Method for carrying out secret key extraction by utilizing random characteristic of received signal of receiving party |
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| CN108768443A (en) * | 2018-05-30 | 2018-11-06 | 中国人民解放军战略支援部队信息工程大学 | Spread spectrum parameter agile method based on random signal |
| CN108964782A (en) * | 2018-07-31 | 2018-12-07 | 深圳大学 | A kind of safety of physical layer Enhancement Method of free space optical-fiber network |
| CN108964782B (en) * | 2018-07-31 | 2021-08-06 | 深圳大学 | Physical layer security enhancement method of free space optical network |
| WO2023240566A1 (en) * | 2022-06-16 | 2023-12-21 | Oppo广东移动通信有限公司 | Sequence generation method and device |
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