CN108601019A - Insincere relaying transmitted in both directions network security transmission method based on relay selection - Google Patents
Insincere relaying transmitted in both directions network security transmission method based on relay selection Download PDFInfo
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- CN108601019A CN108601019A CN201810280633.0A CN201810280633A CN108601019A CN 108601019 A CN108601019 A CN 108601019A CN 201810280633 A CN201810280633 A CN 201810280633A CN 108601019 A CN108601019 A CN 108601019A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
The insincere relaying transmitted in both directions network security transmission method based on relay selection that the present invention provides a kind of, take into account performance and complexity, multiple antennas, how insincere relaying application scenarios under, the insincere relaying for selecting performance best, and ensure that unchecked relaying cannot all receive useful signal using two-way Wave beam forming, and then improve the reliable and secure transmission performance of system.The present invention on the basis of reducing complexity, also have in performance with and the maximum relay selection scheme of rate approach very much.
Description
Technical field
The present invention relates to the information transferring methods in a kind of transmitted in both directions junction network.
Background technology
In recent years, due to the opening of wireless communication, wireless signal is made to be easy to be ravesdropping, distort and interfere, to give
The secure communication of user brings great threat, the safety issue of wireless network of increased attention.With tradition
Encryption mechanism is different, when safety of physical layer (Physical-Layer Security) has lower computation complexity and saves
Between and the advantages of frequency spectrum resource.Since the reliability of improvement wireless communication, safety issue become more and more urgent, physical layer peace
Entirely extensive attention is obtained in theoretical research and practical application.
With the development of safety of physical layer and cooperating relay technology, cooperating relay introducing safety of physical layer model is caused
More and more concerns.In more junction networks, majority is involved in cooperation transmission, the shortcomings of doing so using all relay nodes
It is that the severe relaying of channel condition still occupies system resource, it is extremely limited to the raising of system performance, or even can be due to dry
Disturb the performance of management failure reduction system.Therefore, relaying how is chosen to be also a matter of concern.In further considering
It is incredible after node itself, how to design effective reliable and secure transmission plan becomes increasingly complex.Therefore, for more days
Line, how insincere relay application scene carry out and are based on insincere relay selection conceptual design, to the reliable and secure transmission of lifting system
Performance has great significance.
" Yan S, Peng M, Wang W, the et al.Relay self-selection for secure of document 1
cooperative in Amplify-And-Forward networks[C].international conference on
communications,2012:581-585. ", which is directed to, has the single eavesdropping credible relaying one-way transport network of node, has studied
Based on the maximized relay selection strategy of safe capacity, analyze up to safe capacity and security interrupt probability.
" Ibrahim D H, Hassan E S, Eldolil S A, the et al.A New Relay and Jammer of document 2
Selection Schemes for Secure One-Way Cooperative Networks[J].Wireless
Personal Communications,2014,75(1):665-685. " is directed under the conditions of two kinds of single listener-in and more listener-ins
Credible relaying one-way transport network, have studied the part collaborative strategy in the more junction networks of DF, part relaying is used for decoding-
Forward signal, another part are used for emitting the eavesdropping of interference signal interference eavesdropping node.
" Wang W, Teh K C, Li K H, the et al.Relay Selection for Secure of document 3
Successive AF Relaying Networks With Untrusted Nodes[J].IEEE Transactions on
Information Forensics and Security,2016,11(11):2466-2476. " insincere for one-way transmission
Junction network, it is proposed that different insincere relayings have derived the definite expression formula of security interrupt probability to selection scheme.
" the B.Zhong and Z.Zhang.Secure Full-Duplex Two-Way Relaying of document 4
Networks With Optimal Relay Selection[J].IEEE Communications Letters,2017,21
(5):1123-1126. " be directed to exist eavesdropping node transmitted in both directions junction network (Two Way Relay Network,
TWRN), security interrupt probability existing for listener-in is analyzed, and selects optimal relaying using max-min optimization principles, but
It is that the influence of remaining self-interference limits security performance.
" Krikidis I, Suraweera H A, Smith P J, the et al.Full-Duplex Relay of document 5
Selection for Amplify-and-Forward Cooperative Networks[J].IEEE Transactions
on Wireless Communications,2012,11(12):4381-4393. " for full duplex amplification forward collaboration it is logical
Credible relay selection problem in letter, it is proposed that part relay selection, based on being selected from the channel quality for being relayed to destination
It relays and then reduces expense.
Cooperation credible junction network (such as text of the existing research more relayed about safety of physical layer both for one-way transmission
Offer 1,2), the insincere junction network (such as document 3) of one-way transmission or exist external eavesdropping node transmitted in both directions it is credible in
After network (such as document 4,5) relay selection carry out, the insincere relay selection being not directed in transmitted in both directions junction network
Problem.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of lower bound maximizing minimum one-way transmission safe rate
Relay selection scheme (being denoted as max-min LB), performance and complexity are taken into account, in the applied field of multiple antennas, how insincere relaying
Under scape, the insincere relaying for selecting performance best, and ensure that unchecked relaying cannot all receive using two-way Wave beam forming
To useful signal, and then improve the reliable and secure transmission performance of system.
The technical solution adopted by the present invention to solve the technical problems includes the following steps：
(1) insincere relaying is introduced into transmitted in both directions junction network, it includes two users that institute's research model, which is one,And N number of incredible amplification forwarding relay nodeTwo-way AF half-duplex relays network, each user is provided with
NtRoot antenna, each relaying only have an antenna, Nt>=N,WithBetween be not present direct communication link；
DefinitionWithTransmission power be respectively PAAnd PB；FromIt arrivesWith fromIt arrivesDecline
Channel coefficients are respectivelyWithAssuming that all nodes
All be operated in semiduplex mode, and the noise that receives of all nodes be all mean value be 0, variance isAdditivity multiple Gauss make an uproar
Sound；Definition fromIt arrivesNormalization received signal to noise ratioFromIt arrivesNormalization received signal to noise ratioThen optimum choice relays
(2) first time slot transmitted in information,By precoding vector wAThe signal x of codingAIt is sent toSimultaneouslyBy precoding vector wBThe signal x of codingBIt is sent toxAAnd xBInterference signal each other,WithIt indicates respectivelyWithThe useful signal of transmission,WithIt indicates respectivelyWithTransmission precoding vector, sAAnd sBIt indicates respectivelyWithThe useful data symbol of transmission, and meetIn selected relayingPlace's received signal is expressed as
Wherein,
Indicate fromIt arrivesOther institutes in addition
There is the channel matrix of relaying；Indicate fromIt arrivesIn addition
Other all relayings channel matrix；
Therefore, it relaysPlace receives userRate
Wherein,Be byInformation transmit to userInterference caused by transmission；
Similarly, it relaysPlace receives userRate
Wherein,Be byInformation transmit to userInterference caused by transmission；
(3) second time slot transmitted in information,With constant gainAmplify what a upper time slot received
Then signal relays to userIt is specific as follows：
The signal of transmittingWherein,Locate normalized emission signal power gain because
Son It indicatesTransmission power；
In two usersWithWhat place received comes fromSignal be respectively
Wherein, nAAnd nBIt is respectivelyWithPlace's mean value is zero, variance isAdditive white Gaussian noise；
Meanwhile other non-selected relayingsThe signal receivedFor
Wherein, be to channel coefficients, to transmission process in,Useful information, to transmission process in, be to have
Use information；
WithThe momentary rate at place is respectivelyWithWherein,Be fromIt arrivesNormalization receive noise
Than；Be fromIt arrivesNormalization received signal to noise ratio；
Receive userWithRate be respectivelyWithWherein,Be fromIt arrivesNormalization
Received signal to noise ratio；
(4) calculate fromIt arrivesThe safe rate of transmission linkWherein []+=max
{ 0, },Be in two time slots byThe highest of the signal of transmission is applied alone
Family decodable code rate；FromIt arrivesThe safe rate of transmission linkWhereinBe byThe highest single user decodable code rate of the signal of transmission；In transmitted in both directions
After the total safe rate of network
The beneficial effects of the invention are as follows：Insincere relaying is introduced into transmitted in both directions junction network, research is insincere
Relay selection problem in TWRN；And propose a kind of maximization minimum one-way transmission for taking into account reliable and secure performance and complexity
The relay selection scheme of the lower bound of safe rate, compared with the maximum relay selection scheme of rate, the program is calculating complexity
There is apparent reduction on degree；In addition, on the basis of reducing complexity, this programme also have in performance with and rate it is maximum in
It is approached very much after selection scheme.For synthesis, the present invention can improve the reliability of network transmission, and to lifting system safe transmission
Performance has great significance.
Description of the drawings
Fig. 1 is half-duplex bidirectional transmission trunking network communication models figure；
Fig. 2 is flow chart of the method for the present invention；
Fig. 3 is in N=4 and given targeted security rateWhen, not homology equivalence signal-to-noise ratio (Signal to Noise
Ratio, SNR) under the conditions of three kinds of relay selection Scheme Security outage probabilities compare；
Fig. 4 is in given targeted security rateWhen, lower the carried Wave beam forming security interrupt of different antennae configuration is general
Rate compares；
Fig. 5 is in N=4 and SNR=20dB, and the lower security interrupt probability of different antennae configuration compares；
Fig. 6 be the lower bound relay selection scheme for maximizing minimum one-way transmission safe rate under different SNR in N=4,
Compare with the average security rate of rate maximum relay selection scheme and part relay selection scheme.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples, and the present invention includes but are not limited to following implementations
Example.
The present invention by it is insincere relaying be introduced into transmitted in both directions junction network, and provide a kind of transmitted in both directions it is insincere in
After the relay selection algorithm of network, relay selection is carried out before signal transmission, and form technology using directional beam and effectively gather
Coke transmitting signal, keeps it orthogonal with every other non-selected relaying, to prevent not selected relay reception to useful information.
System model used in the embodiment of the present invention is a two-way AF half-duplex relays network, principle such as Fig. 1
It is shown, the model by two users (With) and N number of incredible amplification forwarding relay nodeComposition, each user
It is equipped with NtRoot antenna, and an only antenna is each relayed, and in view of effectively inhibiting other relay nodes to eavesdrop useful letter
Breath, N is arranged in wet≥N.Assuming thatWithBetween since direct communication link may be not present apart from too far, can only it is N number of not
Relay node can be appointedWith the help of exchange useful information.
Before signal transmission, it will be assumed that userWithAll selectA relayingAt first
Gap,By precoding vector wAThe signal x of codingAIt is sent toSimultaneouslyBy precoding vector wBThe signal x of codingBIt sends
It arrivesxAAnd xBInterference signal each other.Using Precoding Design, other relay nodes can be inhibited to receiveWithIt sends
Signal.Wherein,WithIt indicates respectivelyWithThe useful signal of transmission,WithIt indicates respectivelyWithTransmission precoding vector, sAAnd sBIt indicates respectivelyWithIt sends
Useful data symbol, and meet.In second time slot,With constant gain alphaiIn amplification
The signal that one time slot receives, then relays to userIt should be noted other relay nodesAlso it will receive this forward signal.
In the present invention, it definesWithTransmission power be P respectivelyAAnd PB；FromIt arrivesWith fromIt arrivesDecline letter
Road coefficient is respectivelyWithAnd assume all nodes
All it is operated in semiduplex mode, and it is 0 that the noise that receives of all nodes, which is all mean value, variance isAdditivity multiple Gauss make an uproar
Sound.
For the research flow that the present invention uses as shown in Fig. 2, before signal transmission, we will first complete relay selection, choosing
Select out most suitable relaying.Entire signals transmission is divided into four small steps to carry out, 1) two users route the message to institute
It chooses after this step is completed in first time slot of message transmitting procedure；2) information that selected relaying amplification receives, including
The signal that two users send in a upper time slot；3) it relays to two users and other all non-selected relay forwardings
Amplified signal；4) safe rate of each transmission link is analyzed.
The present invention, which is divided into two parts, to be described：Preparation stage before information transmission and information transmission.
The I preparation stages
Before information transmission, need first to complete relay selection, in the present invention, reliable and secure transmission performance in order to balance
And complexity, it is proposed that a kind of relay selection scheme for the lower bound maximizing minimum one-way transmission safe rate (is denoted as max-min
LB).Detailed process is described as follows：
FromIt arrivesThe safe rate lower bound of transmission link be
Wherein,Be fromIt arrivesNormalization received signal to noise ratio；Be fromIt arrivesNormalization received signal to noise ratio；Be fromIt arrivesNormalization received signal to noise ratio；Be fromIt arrivesNormalization received signal to noise ratio；Indicate fromIt arrivesTransmission link safety speed
Rate lower bound.Utilize formulaExpression formula (a1) can be obtained, by assuming high (the i.e. γ enough of trunking gainI, b
＞ ＞ 1) obtain expression formula (a2).
Equally, fromIt arrivesTransmission link safe rate lower boundIt can be expressed as
Since γA, iAnd γB, iAll it is positive value, according to formula (1) and (2), can obtains maximizing minimum one-way transmission peace
The relay selection scheme (being denoted as max-min LB) of the lower bound of full rate is represented by
II information is transmitted
(1) first time slot
In first time slot, selected relaying () at received signal can be expressed as
ForDesign, need as possible ensure only haveX can be receivedA, and other relay receptions are less than xA, with
This ensuresThe safety of transmission.Similarly, for wBDesign, need as possible ensure only haveX can be receivedB, and its
His relay reception less thanEnsured with thisThe secure safety of transmission.Based on the fact that we use ZFBF technologies
ConstructionWithPrecoding vector wAAnd wB, can obtain
With
Wherein,Indicate fromIt arrivesIn addition
The channel matrix of other all relayings；Indicate fromIt arrivesThe channel matrix of other all relayings in addition.
Transmission process,It is that single user is decodable, therefore, relayingPlace receives userRate can
To be calculated as：
Wherein,Be byInformation transmission caused by interference, formula prefixIt is because a transmission is
2 time slots are needed to complete.
Similarly, we can obtain relay nodePlace receives userRate be：
Wherein,Be byInformation transmission caused by interference.
(2) second stage
In second time slot of information transmission, it is respectively completed the operations such as relaying amplification forwarding, signal reception, detailed process
It is described as follows：
1) amplification forwarding is relayed
In second time slot,With constant gainAmplify the signal receivedThereforeTransmitting
SignalFor
Wherein,It indicatesLocate the power gain factors of normalized emission signal, and
Wherein,It indicatesTransmission power.
2) signal receives
In second time slot,Signal is transmitted to userBut other all relay nodesAlso it will receive this forward signal.
In two usersWithWhat place received comes fromSignal be respectively
Meanwhile other non-selected relayingsThe signal receivedFor
Wherein,Be fromIt arrivesChannel coefficients, fromIt arrivesTransmission process in,Useful information, fromIt arrivesTransmission process in,It is
Useful information；
In the present invention, it is assumed that userWithWith perfect channel state informationWithDue to xAAnd xBIt is
In userWithThe information that first stage sends, for userWithFor be known signal, so when receiving signal
This part when, the influence of the part signal can be eliminated, therefore can be omitted in formula the first item and formula of (11)
(12) Section 2 in, thenWithThe signal that place receives can be equivalent to
Therefore,WithPlace instantaneous Signal to Interference plus Noise Ratio (signal-to-interference-plus-noise ratio,
SINR it) can be expressed as
WithMomentary rate can be expressed as respectivelyWith
In second time slotPlace receives userWithRate be respectively：
Wherein,Be fromIt arrivesNormalization received signal to noise ratio.
3) the safe rate analysis of each transmission link
It is the difference in each transmission link between legitimate channel and tapping channel to define safe rate.In the present invention,
All relayings considered are all incredible, therefore should be regarded as listener-in to check network security.It is stolen in all relayings
The most weak relaying of auditory volume maximum (i.e. with relatively low system safe rate) is the bottleneck of transmitted in both directions network, in other words, most
Weak relaying fromIt arrivesAnd fromIt arrivesTransmission link in have highest single user decodable code rate.
Therefore, in the present invention, fromIt arrivesThe safe rate of transmission link is calculated based on the maximum relaying of eavesdropping capacity
, as long as the relaying intercepts useful information, then the safety of this link cannot be guaranteed.Therefore
Wherein, []+=max { 0, },Be in two time slots byHair
The highest single user decodable code rate of the signal sent.
Equally, fromIt arrivesThe safe rate of transmission link is
Wherein,Be byThe highest single user decodable code speed of the signal of transmission
Rate.
By formula (7) and (18) compare in first and second time slots fromThe single user decodable code of the signal of transmission
Rate, we conclude that：Single user decodable code rate always be equal to first time slot rate, i.e.,
This observation result can be obtained by comparing the expression formula of formula (7) and two rates in (18), this is because second
Occurs additional noise item in the rate of a time slot.Therefore, fromIt arrivesThe safe rate of transmission link is
Similarly, compare formula (8) and (19) can obtain fromIt arrivesThe safe rate of transmission link is
Therefore, the total safe rate of transmitted in both directions junction network is
In embodiment, the present invention has carried out numerical simulation to proposed relay selection optimization algorithm and has compared.All
It emulates and fading channel model is used to carry out 1000 independent experiments, and the safety under this 1000 different fading channel model is fast
Rate, which is averaged, is denoted as average security rate.Assuming that each userWithIt is provided with Nt=10 antennas, insincere relaying
Number N is set as 3 or 4 or 5, and each relaying is only equipped with an antenna.In order to without loss of generality, it will be assumed that all nodes
Noise variance is 1, userWithPower it is identical as relay node,Pass through changeTransmission work(
Rate PATo adjust SNR.In order to show the performance advantage of relay selection algorithm proposed by the present invention, we introduce other two kinds
Common safe transmission scheme is compared.The first be with rate maximum scheme (document [4]), be by comparing system and speed
The size of rate selects optimal relaying.Second scheme is part relay selection scheme (document [5]), is by from purpose section
Point selects optimal relaying to the channel quality quality of relaying.It should be noted that document [4] and [5] be all based on it is credible
Network expansion research, in order to compare we by its with it is proposed that insincere TWRN combine.
Fig. 3 compare max-min LB schemes proposed by the present invention with and rate maximum scheme, document [5] in part in
After the relationship of (Secrecy the outage probability, SOP) and SNR of security interrupt probability in selection scheme.In the present invention
In, SOP indicates that the minimum safe rate in bi-directional transmission link is less than given targeted security rateProbability, i.e.,WhenNt=10 and targeted security rateWhen, from figure
In as can be seen that max-min LB schemes ratio and rate maximum scheme, part relay selection scheme obtain higher performance.This is
Because always selecting the relaying with maximum and rate with rate maximum scheme, this cannot be guaranteed the justice of two transmission links
Property.And part relay selection scheme is based only upon the design of the channel quality from destination node to relaying.
Fig. 4 illustrates the relationship between SOP and the quantity N of insincere relaying under max-min LB schemes.It can from figure
To find out, the quantity by increasing insincere relaying can improve the security performance of system.This is because increasing insincere relaying
Quantity, the choice of bigger can be obtained, obtain the diversity gain of bigger.
Fig. 5 is illustrated under max-min LB schemes, when insincere relaying quantity difference, SOP and targeted security rate it
Between relationship, it can be seen from the figure that the quantity for increasing insincere relaying can improve the SOP of system, this is well demonstrated that
The result obtained from Fig. 3.
Fig. 6 shows max-min LB schemes and the average security rate comparison under 1000 channels of other schemes, from figure
In as can be seen that max-min LB schemes better than the part relay selection scheme in document [5], it is shown that insincere trunk network
Network uses the superiority of max-min schemes.But with based on the maximum project plan comparison of rate, in low SNR, institute of the present invention
It suggests plans to guarantee fairness, sacrifices some safe rates.And under the conditions of high SNR, the traversal of max-min LB schemes
Safe rate approaches and rate maximum scheme.
Conclusion：Insincere relaying is introduced into TWRN by the safe transmission application scenarios for multiple antennas, more relayed, the present invention
In, and the relay selection scheme for the lower bound for maximizing minimum one-way transmission safe rate is proposed, before sending useful signal
Relay selection is executed, and ensures that any non-selected relaying cannot receive letter using Wave beam forming at each user
Breath.And then realize the reliable and secure transmission of information in insincere more junction networks, the simulating, verifying relay selection side proposed
The correctness and validity of case.
Claims (1)
1. a kind of insincere relaying transmitted in both directions network security transmission method based on relay selection, it is characterised in that including following
Step：
(1) insincere relaying is introduced into transmitted in both directions junction network, it includes two users that institute's research model, which is one,
And N number of incredible amplification forwarding relay nodeTwo-way AF half-duplex relays network, each user is provided with NtRoot
Antenna, each relaying only have an antenna, Nt>=N,WithBetween be not present direct communication link；
DefinitionWithTransmission power be respectively PAAnd PB；FromIt arrivesWith fromIt arrivesFading channel
Coefficient is respectivelyWithAssuming that all nodes all works
Make in semiduplex mode, and the noise that receives of all nodes be all mean value be 0, variance isAdditivity multiple Gauss noise；
Definition fromIt arrivesNormalization received signal to noise ratioFromIt arrivesNormalization received signal to noise ratioThen optimum choice relays
(2) first time slot transmitted in information,By precoding vector wAThe signal x of codingAIt is sent toSimultaneouslyIt will be pre-
Coding vector wBThe signal x of codingBIt is sent toxAAnd xBInterference signal each other,WithIt indicates respectivelyWithThe useful signal of transmission,WithIt indicates respectivelyWithTransmission precoding vector, sAAnd sBIt indicates respectivelyWithThe useful data symbol of transmission, and meetIn selected relayingPlace's received signal is expressed as
Wherein,
Indicate fromIt arrivesIn addition other it is all in
After channel matrix；Indicate fromIt arrivesIn addition its
The channel matrix of his all relayings；
Therefore, it relaysPlace receives userRate
Wherein,Be byInformation transmit to userInterference caused by transmission；
Similarly, it relaysPlace receives userRate
Wherein,Be byInformation transmit to userInterference caused by transmission；
(3) second time slot transmitted in information,With constant gainAmplify the signal that a upper time slot receives,
Then user is relayed toIt is specific as follows：
The signal of transmittingWherein,Locate the power gain factors of normalized emission signal It indicatesTransmission power；
In two usersWithWhat place received comes fromSignal be respectively
Wherein, nAAnd nBIt is respectivelyWithPlace's mean value is zero, variance isAdditive white Gaussian noise；
Meanwhile other non-selected relayingsThe signal receivedFor
Wherein,Be fromIt arrivesChannel coefficients, fromIt arrivesTransmission process in,Useful information, fromIt arrivesTransmission process in,It is to have
Use information；
WithThe momentary rate at place is respectivelyWith
Wherein,Be fromIt arrivesNormalization received signal to noise ratio；Be fromIt arrivesNormalization received signal to noise ratio；
Receive userWithRate be respectivelyWithWherein,Be fromIt arrivesNormalization
Received signal to noise ratio；
(4) calculate fromIt arrivesThe safe rate of transmission linkWherein []+=max [0, },Be in two time slots byThe highest single user decodable code speed of the signal of transmission
Rate；FromIt arrivesThe safe rate of transmission linkWherein
Be byThe highest single user decodable code rate of the signal of transmission；The total safe rate of transmitted in both directions junction network
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109919226A (en) * | 2019-03-07 | 2019-06-21 | 西北工业大学深圳研究院 | A kind of insincere junction network antenna selecting method based on machine learning |
| CN109936399A (en) * | 2019-03-07 | 2019-06-25 | 西北工业大学 | A kind of insincere junction network antenna selecting method based on deep neural network |
| CN110430566A (en) * | 2019-07-26 | 2019-11-08 | 西北工业大学 | A kind of more junction network safe transmission methods of double bounce based on collection of energy |
| CN110784866A (en) * | 2019-09-23 | 2020-02-11 | 天津大学 | Untrusted relay network safety transmission method based on blocking type fault-tolerant decoding and forwarding |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120026996A1 (en) * | 2010-07-30 | 2012-02-02 | Buffalo Inc. | Communications device for performing wireless communications, wireless communications system, wireless communications method, and storage medium |
| CN106100708A (en) * | 2016-06-07 | 2016-11-09 | 重庆邮电大学 | Safety of physical layer optimization method in a kind of many relay cognitive radio network |
| CN106332259A (en) * | 2016-10-11 | 2017-01-11 | 西北工业大学 | Optimal power allocation method for increasing safe energy efficiency in bidirectional relay networks |
| CN107071886A (en) * | 2016-10-13 | 2017-08-18 | 西北工业大学 | A kind of optimal power allocation method of insincere junction network under bounded CSI |
| CN107659991A (en) * | 2017-10-09 | 2018-02-02 | 西北工业大学 | A kind of energy distributing method in double bounce collection of energy junction network |
| CN107733490A (en) * | 2017-10-16 | 2018-02-23 | 西北工业大学 | United beam shaping and optimal power allocation method in two-way insincere junction network |
-
2018
- 2018-03-27 CN CN201810280633.0A patent/CN108601019B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120026996A1 (en) * | 2010-07-30 | 2012-02-02 | Buffalo Inc. | Communications device for performing wireless communications, wireless communications system, wireless communications method, and storage medium |
| CN106100708A (en) * | 2016-06-07 | 2016-11-09 | 重庆邮电大学 | Safety of physical layer optimization method in a kind of many relay cognitive radio network |
| CN106332259A (en) * | 2016-10-11 | 2017-01-11 | 西北工业大学 | Optimal power allocation method for increasing safe energy efficiency in bidirectional relay networks |
| CN107071886A (en) * | 2016-10-13 | 2017-08-18 | 西北工业大学 | A kind of optimal power allocation method of insincere junction network under bounded CSI |
| CN107659991A (en) * | 2017-10-09 | 2018-02-02 | 西北工业大学 | A kind of energy distributing method in double bounce collection of energy junction network |
| CN107733490A (en) * | 2017-10-16 | 2018-02-23 | 西北工业大学 | United beam shaping and optimal power allocation method in two-way insincere junction network |
Non-Patent Citations (1)
| Title |
|---|
| 姚如贵 等: "Optimisedpowerallocationtomaximise", 《ELECTRONICS LETTERS》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109919226A (en) * | 2019-03-07 | 2019-06-21 | 西北工业大学深圳研究院 | A kind of insincere junction network antenna selecting method based on machine learning |
| CN109936399A (en) * | 2019-03-07 | 2019-06-25 | 西北工业大学 | A kind of insincere junction network antenna selecting method based on deep neural network |
| CN109936399B (en) * | 2019-03-07 | 2021-10-15 | 西北工业大学 | Untrusted relay network antenna selection method based on deep neural network |
| CN109919226B (en) * | 2019-03-07 | 2022-05-24 | 西北工业大学深圳研究院 | Untrusted relay network antenna selection method based on machine learning |
| CN110430566A (en) * | 2019-07-26 | 2019-11-08 | 西北工业大学 | A kind of more junction network safe transmission methods of double bounce based on collection of energy |
| CN110784866A (en) * | 2019-09-23 | 2020-02-11 | 天津大学 | Untrusted relay network safety transmission method based on blocking type fault-tolerant decoding and forwarding |
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