CN106385300A - Uplink NOMA power distribution method based on dynamic decoding SIC receiver - Google Patents
Uplink NOMA power distribution method based on dynamic decoding SIC receiver Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/0026—Interference mitigation or co-ordination of multi-user interference
- H04J11/0036—Interference mitigation or co-ordination of multi-user interference at the receiver
- H04J11/004—Interference mitigation or co-ordination of multi-user interference at the receiver using regenerative subtractive interference cancellation
- H04J11/0043—Interference mitigation or co-ordination of multi-user interference at the receiver using regenerative subtractive interference cancellation by grouping or ordering the users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
Abstract
The invention provides an uplink NOMA power distribution method based on a dynamic decoding SIC receiver. An NOMA technology is used to realize multiple access via a power domain, so that the same transmission resource can be used by more users, and the spectral efficiency of an uplink scene is improved. Due to use of the SIC receiver of a dynamic decoding adjusting sequence, the service quality is higher compared with other uplink NOMA. The user distribution power distribution strategy provided by the invention takes full consideration of the channel condition and service quality of CSI lower users, so that the problem that other distribution strategies are lower in fairness for users is solved, and higher gain of the transmission performance is obtained.
Description
Technical field
The present invention relates to a kind of up NOMA power distribution method based on dynamic decoder SIC receiver.
Background technology
The 5th following third-generation mobile communication needs to realize high rate communication, supports substantial amounts of customer access equipment, and has relatively
Good delay performance and reliability.For realizing these targets, non-orthogonal multiple access technology (non-orthogonal
Multiple access, calls NOMA in the following text) recommended to apply in the 5th generation communication system by increasing people.In addition, existing skill
Relevant term in art is as follows：OMA (access of orthogonal multiple access orthogonal multiple access), SIC (successive
Interference cancellation serial interference elimination), MUST (multiuser superposition
Transmission multi-user's superposed transmission), UE (user equipment user equipment).
Successive interference cancellation techniques (the successive interference by recipient for the NOMA
Cancellation, calls SIC in the following text) it is achieved that the decoding of superposed signal to the multiple user of sender, thus reaching higher frequency
Spectrum utilization rate.NOMA be mainly characterized by using power domain realize multiple access access, rather than in previous mobile network utilize the time,
Frequency range and code word.In conventional orthogonal frequency division multiple access access technology, as bandwidth resource allocation to channel situation (channel state
Information, calls CSI in the following text) poor user when, the spectrum efficiency of system will be greatly reduced.And the son that makes of NOMA carries
Ripple can be utilized by each user, divides the frequency range accounting for a part of poor user to obtain system spectrum by the preferable user of CSI
The lifting of efficiency.
Tradition would generally give the more conveyer of the preferable user of CSI based on the chance transmission strategy that orthogonal multiple access accesses
Meeting, although improving overall system throughput, runs counter to the requirement of the 5th third-generation mobile communication fairness between user.And be based on
The transmission strategy of NOMA can evade this problem.
The technical scheme of prior art one:
Third generation cooperative partner program (3rd generation partnership project, call 3GPP in the following text) is directed to and rises
Level version long-term evolving network (long-term evolution advanced network, call LTE-A in the following text) is it is proposed that one kind can
Be applied to the 5th third-generation mobile communication multi-user's superposed transmission (multiuser superposition transmission, under
Claim MUST) mechanism.MUST is a kind of NOMA of descending scene in fact, so create many different based on MUST mechanism
NOMA realizes.
The following is the basic boom description to MUST.Base station provides service for user A and user B, two of which user's
Signal is in identical time domain, code word and band transmissions, but has different power.Base station is respectively two users and sends identical
Superposed signal.Different from conventional power allocation strategy (as water-filling algorithm), the signal being sent to CSI poor user will be allocated more
Many power, so that the signal of other users can be directly decoded the information of oneself by it as noise.And the preferable user of CSI
Need to decode the information of another one user first, the dry of another user will belonged in the superposed signal receiving using SIC
Disturb signal cancellation, oneself information then just can be successfully decoded.
In MUST, power partition coefficient is the key of design system.Assume that the descending general power sending overlapped information is fixed as
P, then the signal of user A and B is respectively with PAAnd PBSend.In practical application to optimize total mutual information or total capacity it is often
Criterion, designs PAAnd PBValue.
The shortcoming of prior art one:
Although comparing the feature that MUST takes full advantage of NOMA, spectrum efficiency is made to get a promotion.But it only proposes
Application under descending scene for the NOMA, lacks the description to up scene；In addition it designs work(according to total capacity or total mutual information
Rate distribution coefficient often leads to the not good problem of fairness between user.
The technical scheme of prior art two:
It is that NOMA technology is applied in uplink scene, have scholar to devise the transmission strategy of similar MUST.Wherein
A base station and several users (being assumed to be M) are had, wherein by these users according to the distance row to base station in one cell
Sequence, the more remote user's path loss of distance (calls PL in the following textm) bigger, corresponding sequence number is bigger.All of user is with a certain fixing work(
Rate is to base station sending signal it is assumed that the transmit power of m-th user is Pm, Pm=P- (m-1) ρ+10log10(M)+ωPLm, wherein
P and ω is certain fixed constant.Base station adopts SIC receiver, according to fixing decoding order, first regards other users signal dry
Disturb the information of the maximum user of Decoding Order Number, then in Decoding Order Number the second large user, the interference of first user eliminated,
By that analogy.
The shortcoming of prior art two
Although this scheme gives application in up scene for the rational NOMA, its user's order of demodulation is only first
Sorted according to path loss magnitude relationship, and (i.e. the bigger user of path loss) arrives more rearward to be also so that sequence in power allocation procedure
Reach base station long when average signal power poorer so that the fairness of each user can not be guaranteed.In addition in this scheme
Fixing decoding order can not reflect each user's received signal quality instantaneous, can not reach the performance of optimal demodulation,
Do not reach the requirement of each user fairness.
Application in up scene for the NOMA at present is less, the power distribution strategies of user in existing up NOMA mechanism
And base station SIC receiver decoding order strategy imperfection, often lead to give full play to the problem of the transmission potential of system,
And the service quality for channel situation poor user is difficult to ensure that it is impossible to embody the advantage of NOMA.
Content of the invention
It is an object of the invention to provide a kind of up NOMA power distribution method based on dynamic decoder SIC receiver,
Can solve the problem that base station uses the problem of transmit power distribution between the decoding order of SIC and different user.
For solving the above problems, the present invention provides a kind of up NOMA power distribution based on dynamic decoder SIC receiver
Method, including：
In the cell being provided with a base station, user is divided into several clusters, each cluster comprises three users
Cluster, shares same ascending resource with the user in cluster by NOMA pattern, using different ascending resources between different clusters；
Each user is transmitted according to a certain default fixed transmission power, and this power is to choose according to some criterions
Optimal case；
Described base station receives the superposed signal of three users, and by SIC receiver, described superposed signal is done
Disturb the information eliminating and decoding each user.
Further, in the above-mentioned methods, described base station carries out interference elimination by SIC receiver to described superposed signal
Afterwards, decode the information of each user, including：
Described base station adopts dynamic sequential to decode, and according to instantaneous received power is descending, described superposed signal is solved
Code and interference eliminate, and finally give the information of three users.
Further, in the above-mentioned methods, in the cell being provided with a base station, user is divided into several clusters, often
Individual cluster comprises three user's clusters, shares same ascending resource with the user in cluster by NOMA pattern, between different clusters
Using different ascending resources, including：
In the cell being provided with a base station, user is divided into several clusters, each cluster comprises three users
Cluster, shares same ascending resource with the user in cluster by NOMA pattern, using different ascending resources between different clusters, and is
The resource of the distribution of each cluster mutually orthogonal time domain, frequency range or code word.
Further, in the above-mentioned methods, each user is transmitted according to a certain default fixed transmission power, this
Power is the optimal case chosen according to some criterions, including：
To three users in each cluster, described base station requests obtain maximum transmit power and the biography of each user
The information of transmission rate thresholding, and by the detection statistics of channel long period are obtained with the PL of each user and average decline system
Number.
Further, in the above-mentioned methods, by the detection statistics of channel long period are obtained each user PL and
After average fading coefficients, also include：
The product first according to described PL and average fading coefficients for the described base station is user's Allotment Serial Number 1,2 and 3, wherein sequence
Number bigger this product of expression is less, and the fixed transmission power that corresponding user is assigned to is less, and such m-th user sends out
Send power just can be expressed as Pm=P- (m-1) ρ+10log10(3)+ωPLm, wherein ω is a given constant, P and ρ is undetermined
Coefficient, m is the arbitrary value in 1 to 3.
Further, in the above-mentioned methods, described base station is use first according to the product of described PL and average fading coefficients
After family Allotment Serial Number 1,2 and 3, also include：
The change curve with SNR and ρ for three flat equal Transmission probability of user is made by default formula in base station, its
In, described average interrupt probability is a kind of evaluation index of service quality, can send out when channel capacity is less than given rate threshold
Raw interruption, then in conjunction with the maximum transmit power of each user obtaining before, obtains P the and ρ value of optimum, and is broadcast to use
Family.
Further, in the above-mentioned methods, after being broadcast to user, also include：
User in each cluster completes NOMA transmission by shared resource.
Further, in the above-mentioned methods, described base station carries out interference elimination by SIC receiver to described superposed signal
Afterwards, decode the information of each user, including：
Base station calculates the CSI of each user in real time, in conjunction with known transmit power and PL parameter, be inferred to current these three
The order of user's receiving power, it descending is set to user A, B and C；
Base station carries out SIC decoding by dynamic sequential, other users signal first decodes the information of user A as interference, so
When decoding user B, the interference of known user A is eliminated afterwards, and the information of user C continues as distracter.
Compared with prior art, the present invention realizes multiple access access using NOMA technology by power domain, makes same transmission money
Source is utilized by more users, improves the spectrum efficiency of up scene.Simultaneously because dynamically adjusting the SIC receiver of decoding order
Use, obtain and compare the more preferable service quality of other up NOMA.And user's transmit power proposed by the present invention distribution
Strategy, due to taking into full account the service quality of channel situation and CSI poor user, it is fair between other allocation strategies user to solve
The not good problem of property, obtains higher transmission performance gain.
Brief description
Fig. 1 is the configuration diagram of the up NOMA system of one embodiment of the invention；
Fig. 2 is the committed step figure of one embodiment of the invention；
Fig. 3 is the schematic diagram of the base station SIC decoding of one embodiment of the invention；
Fig. 4 be one embodiment of the invention under given rate threshold, average interrupt probability is with the change of power distribution strategies
Change tendency chart；
Fig. 5 is the changing trend diagram with power distribution strategies for the dissimilar receiver average interrupt probability.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings and specifically real
The present invention is further detailed explanation to apply mode.
The present invention provides a kind of up NOMA power distribution method based on dynamic decoder SIC receiver, including：
Step S1, in the cell being provided with a base station, user is divided into several clusters, each cluster comprises three
Individual user's cluster, shares same ascending resource with the user in cluster by NOMA pattern, adopts different up moneys between different clusters
Source；
Step S2, each user is transmitted according to a certain default fixed transmission power, and this power is according to some
The optimal case that criterion is chosen；
Step S3, described base station receives the superposed signal of three users, and by SIC receiver to described superposed signal
Carry out disturbing the information eliminating and decoding each user.Specifically, in up scene as shown in Figure 1, have in a cell
One base station and m user.These users are divided into several cluster (cluster), and each cluster comprises three users, it
Same ascending resource is shared by NOMA pattern, using different ascending resources between different cluster.Each user is according to certain
One default constant power is transmitted, and this power is the optimal case chosen according to some criterions.The letter that base station receives
Number it is the superposition of three subscriber signals, interference is carried out by SIC receiver and eliminates, thus decoding the information of each user.This
NOMA is applied in uplink communication scene for invention, mainly solves base station and use to send out between the decoding order of SIC and different user
Send the problem of power distribution, improve the overall transmission efficiency of system, and take into full account fairness between user.
Preferably, step S3, described base station, after SIC receiver carries out interference elimination to described superposed signal, decodes
Go out the information of each user, including：
Described base station adopts dynamic sequential to decode, and according to instantaneous received power is descending, described superposed signal is solved
Code and interference eliminate, and finally give the information of three users.Specifically, base station adopts dynamic sequential to decode, and receives according to instantaneous
The descending information being decoded and disturbing elimination, finally give three users of power.
Preferably, step S1, in the cell being provided with a base station, user is divided into several clusters, each cluster
Comprise three user's clusters, with the user in cluster, same ascending resource is shared by NOMA pattern, using different between different clusters
Ascending resource, including：
In the cell being provided with a base station, user is divided into several clusters, each cluster comprises three users
Cluster, shares same ascending resource with the user in cluster by NOMA pattern, using different ascending resources between different clusters, and is
The resource of the distribution of each cluster mutually orthogonal time domain, frequency range or code word.
Preferably, step S2, each user is transmitted according to a certain default fixed transmission power, this power be by
The optimal case chosen according to some criterions, including：
To three users in each cluster, described base station requests obtain maximum transmit power and the biography of each user
The information of transmission rate thresholding, and by the detection statistics of channel long period are obtained with the PL of each user and average decline system
Number.
Preferably, by the detection statistics of channel long period are obtained the PL of each user and average fading coefficients it
Afterwards, also include：
The product first according to described PL and average fading coefficients for the described base station is user's Allotment Serial Number 1,2 and 3, wherein sequence
Number bigger this product of expression is less, and the fixed transmission power that corresponding user is assigned to is less, and such m-th user sends out
Send power just can be expressed as Pm=P- (m-1) ρ+10log10(3)+ωPLm, wherein ω is a given constant, P and ρ is undetermined
Coefficient, m is the arbitrary value in 1 to 3.
Preferably, the product first according to described PL and average fading coefficients for the described base station is user's Allotment Serial Number 1,2 and 3
Afterwards, also include：
The change curve with SNR and ρ for three flat equal Transmission probability of user is made by default formula in base station, its
In, described average interrupt probability is a kind of evaluation index of service quality, can send out when channel capacity is less than given rate threshold
Raw interruption, then in conjunction with the maximum transmit power of each user obtaining before, obtains P the and ρ value of optimum, and is broadcast to use
Family.
Preferably, after being broadcast to user, also include：
User in each cluster completes NOMA transmission by shared resource.
Preferably, step S3, described base station, after SIC receiver carries out interference elimination to described superposed signal, decodes
Go out the information of each user, including：
Base station calculates the CSI of each user in real time, in conjunction with known transmit power and PL parameter, be inferred to current these three
The order of user's receiving power, it descending is set to user A, B and C；
Base station carries out SIC decoding by dynamic sequential, other users signal first decodes the information of user A as interference, so
When decoding user B, the interference of known user A is eliminated afterwards, and the information of user C continues as distracter.
Detailed, as shown in Fig. 2 the committed step of the present invention is as follows：
1. user is divided into cluster by triplets by user grouping, and distributes mutually orthogonal for each cluster
The resources such as time domain, frequency range or code word；
2. three users in couple each cluster, described base station requests obtain each user maximum transmit power and
The information of transfer rate thresholding, and by the detection statistics of channel long period are obtained with the PL of each user and average decline system
Number；
3. the product first according to described PL and average fading coefficients for the base station described in is user's Allotment Serial Number 1,2 and 3, wherein
Sequence number is bigger to represent that this product is less, and the fixed transmission power that corresponding user is assigned to is less, such m-th user's
Transmit power just can be expressed as Pm=P- (m-1) ρ+10log10(3)+ωPLm, wherein ω is a given constant, P and ρ is to treat
Determine coefficient, m is the arbitrary value in 1 to 3；
4. the change curve with SNR and ρ for three flat equal Transmission probability of user is made by default formula in base station,
Wherein, described average interrupt probability is a kind of evaluation index of service quality, the meeting when channel capacity is less than given rate threshold
Interrupt, then in conjunction with the maximum transmit power of each user obtaining before, obtain P the and ρ value of optimum, and be broadcast to
User；
5. the user in each cluster completes NOMA transmission by shared resource；
6. base station will calculate the CSI of each user in real time, in conjunction with known transmit power and PL parameter, be inferred to current this
The order of three user's receiving powers, it descending is set to user A, B and C；
7. base station carries out SIC decoding by dynamic sequential, and other users signal first decodes the information of user A as interference,
Then when decoding user B, the interference of known user A is eliminated, and the information of user C continues as distracter.Finally can
Decode the information of user C with interference-free.This process is as shown in Figure 3.
The embodiment of the present invention one：
Present example is mainly described in detail to optimal power allocation strategy.
Optimal power allocation strategy is mainly determined by following factor：It is optimization aim, channel and noise first.Optimize
Target wishes service quality or the performance requirement that system reaches, and the modeling pattern of channel and noise determines the table of optimization aim
Reach shape.The problems such as avoiding between user fairness good, it is usually used that average interrupt probability is minimum or outage probability maximum user
Effective speed maximum.Under considering the scene of rayleigh fading channel and additive white Gaussian noise, the outage probability of each user
Can be write as following form.
WhereinRepresent that the channel capacity of m-th user is less than threshold value.
Represent channel capacity, wherein pmIt is transmit power, hmIt is
Channel fading (includes multipath fading and PL), and σ represents noise.When giving each user rate thresholding, by above formula, can
To make the graph of a relation with SNR and ρ for the average interrupt probability as Fig. 4, the combination of wherein every kind of SNR and ρ represents a kind of power
Allocation strategy, Fig. 4 is applied to noise 0dB, the situation of rate threshold 0.75.
Next to that each user's transmit power maximum is it is assumed that it is respectivelyWithDue to each user
Good allocation strategy can be expressed as Pm=P- (m-1) ρ+10log10(3)+ωPLm, wherein P is multiplied by average noise equal to SNR.Right
User send peak power restriction, actually define in the diagram a series of by the sky cutting with Z axis parallel plane
Between, the point in these spaces that falls is exactly the optimal distribution strategy meeting condition.It is easy in practical operation using MATLAB etc.
Software solves, and then can obtain PmValue.
The embodiment of the present invention two：
This example is mainly emphasized using the dynamic meaning adjusting decoding order receiver.
Although the complexity of design receiver can be improved using the SIC receiver of dynamic adjustment decoding order, permissible
Improve spectrum efficiency well.The general principle of SIC is exactly progressively to deduct the interference of maximum signal power user, SIC detector
In receipt signal, one by one data decision is carried out to multiple users, rule out a user and just deduct this subscriber signal simultaneously and cause
Multi-access inference, until eliminate all of multi-access inference till.Folded in multiple users just because of every one-level SIC receiver
The signal of a certain specific user is detected, we just will preferentially detect that being easiest to capture is the maximum letter of receiving power in plus signal
Number.In addition the signal power of a certain user is bigger, and the interference to other users is more serious, thus to preferentially measure in case by its
Eliminate.It is contemplated that the receiver of the fixing decoding order of receiver contrast using dynamic adjustment, there is larger performance gain.
Fig. 5 is shown that to contrast the average interrupt probability of dynamic adjustment decoding order receiver and permanent order.Can see
Go out under any identical power distribution strategies, dynamically adjust always can obtain more preferable service quality.Specifically, fixing
The performance of order receiver is highly dependent upon larger ρ value as guarantee.However means that transmit power between different user
Difference can be very big, by the fairness between impact user.
In sum, the present invention realizes multiple access access using NOMA technology by power domain, makes same transfer resource by more
Multi-user utilizes, and improves the spectrum efficiency of up scene.Simultaneously because dynamically adjusting making of the SIC receiver of decoding order
With obtaining and comparing the more preferable service quality of other up NOMA.And user's transmit power allocation strategy proposed by the present invention,
Due to taking into full account the service quality of channel situation and CSI poor user, solve between other allocation strategies user fairness not
Good problem, obtains higher transmission performance gain.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Professional further appreciates that, in conjunction with the unit of each example of the embodiments described herein description
And algorithm steps, can with electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes composition and the step of each example in the above description according to function.These
Function to be executed with hardware or software mode actually, the application-specific depending on technical scheme and design constraint.Specialty
Technical staff can use different methods to each specific application realize described function, but this realization should
Think beyond the scope of this invention.
Obviously, those skilled in the art can carry out the various changes and modification spirit without deviating from the present invention to invention
And scope.So, if these modifications of the present invention and modification belong to the claims in the present invention and its equivalent technologies scope it
Interior, then the present invention is also intended to including these changes and modification.
Claims (8)
1. a kind of up NOMA power distribution method based on dynamic decoder SIC receiver is it is characterised in that include：
In the cell being provided with a base station, user is divided into several clusters, each cluster comprises three user's clusters, with
User in cluster shares same ascending resource by NOMA pattern, using different ascending resources between different clusters；
Each user is transmitted according to a certain default fixed transmission power, and this power is to choose according to some criterions
Excellent scheme；
Described base station receives the superposed signal of three users, and carries out interference by SIC receiver to described superposed signal and disappear
Remove and decode the information of each user.
2. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 1, its feature exists
In described base station, after SIC receiver carries out interference elimination to described superposed signal, decodes the information of each user, bag
Include：
Described base station adopt dynamic sequential decode, according to instantaneous received power descending described superposed signal is decoded and
Interference eliminates, and finally gives the information of three users.
3. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 1, its feature exists
In in the cell being provided with a base station, user being divided into several clusters, each cluster comprises three user's clusters, same
User in cluster shares same ascending resource by NOMA pattern, using different ascending resources between different clusters, including：
In the cell being provided with a base station, user is divided into several clusters, each cluster comprises three user's clusters, with
User in cluster shares same ascending resource by NOMA pattern, using different ascending resources between different clusters, and is each
The resource of cluster distribution mutually orthogonal time domain, frequency range or code word.
4. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 1, its feature exists
In each user is transmitted according to a certain default fixed transmission power, and this power is to choose according to some criterions
Excellent scheme, including：
To three users in each cluster, described base station requests obtain maximum transmit power and the transmission speed of each user
The information of rate thresholding, and by the PL of each user and average fading coefficients are obtained to the detection statistics of channel long period.
5. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 4, its feature exists
In, after PL and the average fading coefficients of each user are obtained to the detection statistics of channel long period, also including：
The product first according to described PL and average fading coefficients for the described base station is user's Allotment Serial Number 1,2 and 3, and wherein sequence number is got over
Represent that greatly this product is less, the fixed transmission power that corresponding user is assigned to is less, the transmission work(of such m-th user
Rate just can be expressed as Pm=P- (m-1) ρ+10log10(3)+ωPLm, wherein ω is a given constant, P and ρ is undetermined coefficient,
M is the arbitrary value in 1 to 3.
6. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 5, its feature exists
In the product first according to described PL and average fading coefficients for the described base station is for, after user's Allotment Serial Number 1,2 and 3, also including：
The change curve with SNR and ρ for three flat equal Transmission probability of user is made by default formula in base station, wherein,
Described average interrupt probability is a kind of evaluation index of service quality, in occurring when channel capacity is less than given rate threshold
Disconnected, then in conjunction with the maximum transmit power of each user obtaining before, obtain P the and ρ value of optimum, and be broadcast to user.
7. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 6, its feature exists
In, after being broadcast to user, also including：
User in each cluster completes NOMA transmission by shared resource.
8. the up NOMA power distribution method based on dynamic decoder SIC receiver as claimed in claim 7, its feature exists
In described base station, after SIC receiver carries out interference elimination to described superposed signal, decodes the information of each user, bag
Include：
Base station calculates the CSI of each user in real time, in conjunction with known transmit power and PL parameter, is inferred to these three users current
The order of receiving power, it descending is set to user A, B and C；
Base station carries out SIC decoding by dynamic sequential, and other users signal first decodes the information of user A, Ran Hou as interference
During decoding user B, the interference of known user A is eliminated, and the information of user C continues as distracter.
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| CN107466097A (en) * | 2017-03-15 | 2017-12-12 | 中山大学 | A kind of power distribution method of non-orthogonal multiple access system |
| CN108430102A (en) * | 2018-03-08 | 2018-08-21 | 广州番禺职业技术学院 | A kind of uplink adaptive N OMA communication systems and its method |
| CN108600997A (en) * | 2018-04-03 | 2018-09-28 | 暨南大学 | A kind of extensive D2D communication means assisting NOMA based on HARQ |
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| CN112770395B (en) * | 2019-11-04 | 2023-05-26 | 中国科学院上海高等研究院 | Optimal dynamic power distribution method, system, medium and terminal based on uplink NOMA |
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| CN111432421B (en) * | 2020-04-02 | 2024-03-15 | 宁波大学 | Synchronous test method for multiple tested terminals of 5G communication test instrument |
| CN114520989A (en) * | 2022-01-21 | 2022-05-20 | 重庆邮电大学 | Multi-carrier digital energy simultaneous transmission NOMA network energy efficiency maximization method |
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