CN106452529A - User pairing method based on non-orthogonal multiple access system - Google Patents

User pairing method based on non-orthogonal multiple access system Download PDF

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CN106452529A
CN106452529A CN201610866002.8A CN201610866002A CN106452529A CN 106452529 A CN106452529 A CN 106452529A CN 201610866002 A CN201610866002 A CN 201610866002A CN 106452529 A CN106452529 A CN 106452529A
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user
signal
base station
noise ratio
users
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CN106452529B (en
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赵力强
郭成
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Xidian University
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Xidian University
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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
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • 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
    • H04B7/06—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
    • H04B7/0619—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 using feedback from receiving side
    • H04B7/0621—Feedback content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention relates to a user pairing method based on a non-orthogonal multiple access system. The method comprises the following steps: (1), a base station sends a superposed signal to multiple users, and the users calculate a signal-to-noise ratio of a channel according to the received superposed signal, and feeds back the signal-to-noise ratio of respective channel to the base station at regular intervals; (2), the base station calculates a user average signal-to-noise ratio according to the multiple signal-to-noise ratios after acquiring the multiple signal-to-noise ratios fed back by the users; (3), the base station implements fixed power allocation through the non-orthogonal multiple access; (4), the throughput capacity of near-end users and the throughput capacity of far-end users are separately calculated; (5), a specific value Di,j of the throughput capacity Ri of the near-end users and the throughput capacity Rj of the far-end users is calculated, and Di,j is compared with a preset user rate difference threshold value D0, if Di,j >= D0, the near-end users and the far-end users are classified as pre-selected paired users Si,j = {ui, uj}; and (6), the base station calculates a channel relevance Rhoi,j between paired users of pre-selected paired user groups, and then paired users are chosen according to the formula as defined in the specification, thus generating a final paired user group.

Description

A kind of user's matching method based on non-orthogonal multiple system
Technical field
The invention belongs to the 5th third-generation mobile communication technical field, more particularly to a kind of user based on non-orthogonal multiple system Matching method.
Background technology
For the realization of multiuser multiplexing in mobile cellular net, 2G network uses time division multiple acess (Time Division Multiple Access, TDMA) technology, 3G network uses CDMA (Code Division Multiple Access, CDMA) technology, 4G network uses OFDM (Orthogonal Frequency Domain Multiple Access, OFDMA) technology.Multiuser multiplexing wherein in 2G, 3G, 4G network is entered in time domain, code domain, frequency domain OK.However, future 5G needs the equipment connection number of higher spectrum efficiency and magnanimity, non-orthogonal multiple (Non- Orthogonal Multiple Access, NOMA) technology is suggested in 5G, to meet the demand of future communications.
The basic thought of non-orthogonal multiple is to be superimposed multiple users in power domain, passes through serial interference elimination in receiving terminal (Successive Interference Cancellation, SIC) separates subscriber signal.Many compared to orthogonal frequency in 4G Location, non-orthogonal multiple has the following advantages：(1) non-orthogonal multiple can compatibility 4G OFDM；(2) non-orthogonal multiple profit With base station to the different path loss difference of user, the signal of multiple users is overlapped, so as to improve signal gain；(3) Non-orthogonal multiple can allow the user of same cell use same frequency band, and then improve spectrum efficiency and equipment connection number；(4) Non-orthogonal multiple need not know the channel condition information (Channel State Information, CSI) of each channel, so as to Better performance can be obtained under high-speed mobile scene.
Non-orthogonal multiple system is an interference-limited system, and multi-user therefore can not possibly be allowed to participate in same wave beam Interior non-orthogonal multiple, selects which user is matched, and to reducing wave beam internal interference and inter-beam interference, lift system is handled up Amount has a major impact：In non-orthogonal multiple system, two larger for channel gain diversity users are matched, Ke Yiti High system and speed and unique user information rate.
Content of the invention
Goal of the invention：The problem that the present invention is present for above-mentioned prior art makes improvement, i.e., the invention discloses a kind of User's matching method based on non-orthogonal multiple system.
Technical scheme：A kind of user's matching method based on non-orthogonal multiple system, comprises the following steps：
(1), base station sends superposed signal to multiple users, and user send signal and noise in superposed signal according to received Ratio calculates the signal to noise ratio of channel, and periodically to the signal to noise ratio of the respective channel of base station feedback；
(2) after, base station obtains the signal to noise ratio of multiple user feedbacks, average according to multiple signal-to-noise ratio computation users for receiving Signal to noise ratio；
(3), base station is fixed power distribution by non-orthogonal multiple, when the signal to noise ratio of user is more than the average noise of user Than when, the user be near-end user, proximally user distribution transmit power 20%；When the signal to noise ratio of user is average less than user During signal to noise ratio, the user is to distribute the 80% of transmit power remote subscriber, to remote subscriber；
(4), the handling capacity of near-end user and remote subscriber is calculated respectively, and computing formula is as follows：
Wherein：
RiRepresent the handling capacity of near-end user；
RjRepresent the handling capacity of remote subscriber；
hiRepresent base station to the channel of user i；
wiRepresent the beamforming vector of user i；
piRepresent the power for distributing to user i；
hjRepresent base station to the channel of user j；
wkRepresent the beamforming vector of user k；
pjRepresent the power for distributing to user j；
ρ represents transmitting terminal signal to noise ratio；
(5), near-end user handling capacity R is calculatediHandling capacity R with remote subscriberjRatio Di,j, wherein：
Di,j=Ri/Rj；
Again by Di,jWith pre-set user speed diversity threshold value D0Compare, if Di,j≥D0, by near-end user and distal end User is classified as pre-selection pairing user Si,j={ ui,uj, all of pre-selection pairing user's group is Gi,j=∪ Si,j,
(6), base station calculates the channel relevancy ρ for matching user in pre-selection pairing user's groupi,j, then basis The user of pairing is selected, so as to produce final pairing user's group,
Wherein：
Wherein：
hiRepresent base station to the channel of user i；
hjRepresent base station to the channel of user j；
ρi,jRepresent the channel relevancy of pairing user.
Beneficial effect：A kind of user's matching method based on non-orthogonal multiple system disclosed by the invention has following beneficial Effect：
1st, the spectrum efficiency of system and the handling capacity of user are effectively improved；
2nd, the complexity of user's matching method is reduced, reduces Time Delay of Systems；
3rd, replace channel gain diversity by user throughput diversity, avoid subscriber channel under mimo channel Gain sequencing problem；
4th, final pairing user being determined using channel relevancy, effectively reduces inter-beam interference problems.
Description of the drawings
Fig. 1 is a kind of flow chart of user's matching method based on non-orthogonal multiple system disclosed by the invention.
Specific embodiment：
Below the specific embodiment of the present invention is described in detail.
As shown in figure 1, a kind of user's matching method based on non-orthogonal multiple system, comprises the following steps：
(1), base station sends superposed signal to multiple users, and user send signal and noise in superposed signal according to received Ratio calculates the signal to noise ratio of channel, and periodically to the signal to noise ratio of the respective channel of base station feedback；
(2) after, base station obtains the signal to noise ratio of multiple user feedbacks, average according to multiple signal-to-noise ratio computation users for receiving Signal to noise ratio；
(3), base station is fixed power distribution by non-orthogonal multiple, when the signal to noise ratio of user is more than the average noise of user Than when, the user be near-end user i, proximally user i distribution transmit power 20%；When the signal to noise ratio of user is flat less than user During equal signal to noise ratio, the user is to distribute the 80% of transmit power remote subscriber j, to remote subscriber j；
(4), the handling capacity of near-end user i and remote subscriber j is calculated respectively, and computing formula is as follows：
Wherein：
RiRepresent the handling capacity of near-end user i；
RjRepresent the handling capacity of remote subscriber j；
hiRepresent base station to the channel of near-end user i；
wiRepresent the beamforming vector of near-end user i；
piRepresent the power of i-th user's distribution；
hjRepresent base station to the channel of remote subscriber j；
wkRepresent the beamforming vector of user k；
pjRepresent the power for distributing to remote subscriber j；
ρ represents transmitting terminal signal to noise ratio；
(5), near-end user handling capacity R is calculatediHandling capacity R with remote subscriberjRatio Di,j, wherein：
Di,j=Ri/Rj；
Again by Di,jWith pre-set user speed diversity threshold value D0Compare, if Di,j≥D0, by near-end user i and far End subscriber j is classified as pre-selection pairing user Si,j={ ui,uj, all of pre-selection pairing user's group is Gi,j=∪ Si,j,
(6), base station calculates the channel relevancy ρ for matching user in pre-selection pairing user's groupi,j, then basis The user of pairing is selected, so as to produce final pairing user's group,
Wherein：
Represent ρi,jThe value of i, j when taking maximum,
Wherein：
hiRepresent base station to the channel of user i；
hjRepresent base station to the channel of user j；
ρi,jRepresent the channel relevancy of pairing user.
Above embodiments of the present invention are elaborated.But the present invention is not limited to above-mentioned embodiment, In the ken that art those of ordinary skill possesses, can also do on the premise of without departing from present inventive concept Go out various change.

Claims (1)

1. a kind of user's matching method based on non-orthogonal multiple system, it is characterised in that comprise the following steps：
(1), base station sends superposed signal to multiple users, and user is according to the ratio for sending signal and noise in superposed signal for receiving The signal to noise ratio of channel is calculated, and periodically to the signal to noise ratio of the respective channel of base station feedback；
(2) after, base station obtains the signal to noise ratio of multiple user feedbacks, according to the average noise of multiple signal-to-noise ratio computation users for receiving Than；
(3), base station is fixed power distribution by non-orthogonal multiple, when the signal to noise ratio of user is more than user's average signal-to-noise ratio When, the user is the 20% of near-end user, proximally user's distribution transmit power；When the signal to noise ratio of user is averagely believed less than user Make an uproar than when, the user be remote subscriber, to remote subscriber distribution transmit power 80%；
(4), the handling capacity of near-end user and remote subscriber is calculated respectively, and computing formula is as follows：
R i = log 2 ( 1 + | h i w i | 2 p i Σ k ≠ i M | h i w k | 2 + 1 / ρ ) - - - ( 4 - 1 ) ;
Wherein：
RiRepresent the handling capacity of near-end user；
RjRepresent the handling capacity of remote subscriber；
hiRepresent base station to the channel of user i；
wiRepresent the beamforming vector of user i；
piRepresent the power for distributing to user i；
ρ represents transmitting terminal signal to noise ratio；
(5), near-end user handling capacity R is calculatediHandling capacity R with remote subscriberjRatio Di,j, wherein：
Di,j=Ri/Rj；
Again by Di,jWith pre-set user speed diversity threshold value D0Compare, if Di,j≥D0, by near-end user and remote subscriber It is classified as pre-selection pairing user Si,j={ ui,uj, all of pre-selection pairing user's group is Gi,j=∪ Si,j,
(6), base station calculates the channel relevancy ρ for matching user in pre-selection pairing user's groupi,j, then basisSelect The user of pairing, so as to produce final pairing user's group,
Wherein：
Wherein：
hiRepresent base station to the channel of user i；
hjRepresent base station to the channel of user j；
ρi,jRepresent the channel relevancy of pairing user.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107466097A (en) * 2017-03-15 2017-12-12 中山大学 A kind of power distribution method of non-orthogonal multiple access system
CN107612669A (en) * 2017-09-12 2018-01-19 西安交通大学 User's matching method for non-orthogonal multiple system
CN108809626A (en) * 2018-05-30 2018-11-13 北京安如山文化科技有限公司 A kind of whitepack SM4 cryptographic algorithms scheme and system
CN109450503A (en) * 2018-11-16 2019-03-08 北京航空航天大学 One kind facing sky array communications non-orthogonal multiple access fairness transmission method
CN109586773A (en) * 2018-11-16 2019-04-05 北京航空航天大学 Face empty communication millimeter wave non-orthogonal multiple access technology combined transceiving end wave beam forming and power distribution method
CN109787666A (en) * 2017-11-10 2019-05-21 中兴通讯股份有限公司 A kind of frequency domain dispatching method, device and equipment
CN110932764A (en) * 2020-02-12 2020-03-27 南京邮电大学 User matching and power distribution method of MIMO-NOMA downlink communication system
CN112243222A (en) * 2019-07-17 2021-01-19 大唐移动通信设备有限公司 MU-MIMO multi-terminal UE pairing method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104539411A (en) * 2014-12-30 2015-04-22 西安交通大学 User selection method of down link of nonorthogonal multiple-access system
CN104869094A (en) * 2015-04-29 2015-08-26 清华大学 Upstream multiple access method combined with orthogonal multiple access and nonorthogonal multiple access
US20150351081A1 (en) * 2014-06-02 2015-12-03 Yuan Zhu User equipment and method for dynamic non-orthogonal multiple access communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150351081A1 (en) * 2014-06-02 2015-12-03 Yuan Zhu User equipment and method for dynamic non-orthogonal multiple access communication
CN104539411A (en) * 2014-12-30 2015-04-22 西安交通大学 User selection method of down link of nonorthogonal multiple-access system
CN104869094A (en) * 2015-04-29 2015-08-26 清华大学 Upstream multiple access method combined with orthogonal multiple access and nonorthogonal multiple access

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107466097A (en) * 2017-03-15 2017-12-12 中山大学 A kind of power distribution method of non-orthogonal multiple access system
CN107466097B (en) * 2017-03-15 2020-08-28 中山大学 Power distribution method of non-orthogonal multiple access system
CN107612669B (en) * 2017-09-12 2020-03-31 西安交通大学 User pairing method for non-orthogonal multiple access system
CN107612669A (en) * 2017-09-12 2018-01-19 西安交通大学 User's matching method for non-orthogonal multiple system
CN109787666B (en) * 2017-11-10 2021-04-20 中兴通讯股份有限公司 Frequency domain scheduling method, device and equipment
CN109787666A (en) * 2017-11-10 2019-05-21 中兴通讯股份有限公司 A kind of frequency domain dispatching method, device and equipment
CN108809626A (en) * 2018-05-30 2018-11-13 北京安如山文化科技有限公司 A kind of whitepack SM4 cryptographic algorithms scheme and system
CN109450503A (en) * 2018-11-16 2019-03-08 北京航空航天大学 One kind facing sky array communications non-orthogonal multiple access fairness transmission method
CN109586773B (en) * 2018-11-16 2020-05-08 北京航空航天大学 Wave beam forming and power distribution method for combining transmitting and receiving end by using space-air communication millimeter wave non-orthogonal multiple access technology
CN109450503B (en) * 2018-11-16 2020-11-24 北京航空航天大学 Non-orthogonal multiple access fairness transmission method for air-space array communication
CN109586773A (en) * 2018-11-16 2019-04-05 北京航空航天大学 Face empty communication millimeter wave non-orthogonal multiple access technology combined transceiving end wave beam forming and power distribution method
CN112243222A (en) * 2019-07-17 2021-01-19 大唐移动通信设备有限公司 MU-MIMO multi-terminal UE pairing method and device
CN110932764A (en) * 2020-02-12 2020-03-27 南京邮电大学 User matching and power distribution method of MIMO-NOMA downlink communication system

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