CN105163347B - A kind of multiple-mode radio communication method eliminated based on interference - Google Patents
A kind of multiple-mode radio communication method eliminated based on interference Download PDFInfo
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- CN105163347B CN105163347B CN201510616894.1A CN201510616894A CN105163347B CN 105163347 B CN105163347 B CN 105163347B CN 201510616894 A CN201510616894 A CN 201510616894A CN 105163347 B CN105163347 B CN 105163347B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The present invention relates to a kind of multiple-mode radio communication methods eliminated based on interference, comprising: S1, base station execute pre-configuration to the multiple mobile clients for participating in communication；S2, base station both ends mobile client simultaneously to base station send information；S3, base station are captured and are locked to the information received, then with corresponding carrier modulation code to after capture and locking information carrier demodulation after, obtain its both ends matching mobile client send information combined information；S4, base station in turn execute interference cancellation operation to the combined information of each pair of mobile client obtained after carrier wave demodulation.The present invention maps carrier wave modulation code allocation table by establishing multi-mode matching to the mobile client for executing two-way communication, then carrier modulation code corresponding to all mobile clients in one end is directly summed, and interference is executed according to obtained combined information and is eliminated, both interference had been greatly reduced, also power system capacity is improved, there is beneficial technical effect.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of multiple-mode radio communication methods eliminated based on interference.
Background technique
With the development and application of the fast development of the communication technology, especially 4G technology, the transmission rate of wireless communication is obtained
It is promoted to great, data traffic types are also constantly changing, and various high-speed data services obtain more and more
Using.In these new technologies or new business, the object communicated with each mobile client is far above one, and communication pattern is not yet
It is limited as one kind, allowing for the matching between client in this way becomes complexity, and interference is increasing, the distribution of radio resource
Also become more nervous.
On the other hand, for the base station for executing above-mentioned communication service or eNodeB, as used by communicating pair
Communication standard is not identical, and base station needs to carry out multiple carrier modulation when carrying out information transmission, could send the communication information
To corresponding mobile client；However, due to the non-fully desired orthogonality of carrier modulation code, when the number clients for executing communication
When mesh increases, communication process will generate more serious interference, influence communication quality.
Therefore, defect in the prior art how is solved, the capacity of communication system is promoted, reducing interference just becomes the present invention
Research contents.
Summary of the invention
The purpose of the present invention is what is be achieved through the following technical solutions.
Embodiment according to the present invention proposes a kind of multiple-mode radio communication method eliminated based on interference, the side
Method includes:
S1, base station execute pre-configuration to the multiple mobile clients for participating in communication；
S2, base station both ends mobile client simultaneously to base station send information；
S3, base station are captured and are locked to the information received, then with corresponding carrier modulation code to capture and locking
After information carrier demodulation afterwards, the combined information that its both ends matching mobile client sends information is obtained；
S4, base station in turn execute interference to the combined information of each pair of mobile client obtained after carrier wave demodulation and eliminate behaviour
Make.
Embodiment according to the present invention, the method also includes:
S5, setting recognition threshold；
S6, base station are executed according to recognition threshold to be identified and obtains recognition result；
S7, mobile client termination collect mail and cease and carry out carrier wave demodulation with corresponding carrier modulation code；
S8, mobile client end execute interference cancellation operation；
Information after S9, identification interference elimination.
Embodiment according to the present invention, the pre-configuration of the S1 include: that multi-mode matching mapping graph is established in the base station
With execute parameter configuration initialization operation, then responded to send the both ends mobile client group of communication request, it is logical to analyze this
Multi-mode matching mapping carrier wave modulation code allocation table is requested and established to letter, so that both ends matching mobile client starts to communicate.
Embodiment according to the present invention, the S2 are specifically included: base station one end some mobile client L1It will lead to it
Carrier modulation code corresponding to all mobile clients of the other end of letter is directly summed, i.e. mobile client LiIn multi-mode
All non-zero point value summations with corresponding row in mapping carrier wave modulation code allocation table, believe transmission with the sum of the carrier modulation code
Breath is sent after carrying out carrier modulation；Similarly, some mobile client of base station other end RjBy all movements in the one end communicated with
The carrier modulation code that groups of clients is answered directly is summed, i.e. mobile client RjIn multi-mode matching mapping carrier wave modulation code distribution
All non-zero point values summations of corresponding column in table, then with the sum of the carrier modulation code to being sent out after transmitting information by carrier modulation
It send.
The setting recognition threshold of embodiment according to the present invention, the S5 specifically includes:
Threshold value
WhereinThe respectively real-time signal strength of both ends mobile client that receives of base station,
paAnd qbThe transmission power of respectively optional object matching mobile client a, b；ldAnd rbRespectively object matching mobile client
The binary piece of information for holding a, b to send；αaAnd αbFor the weak parameter of channel corresponding to mobile client a, b, then object matching moves
Criterion of identification corresponding to dynamic client a, b are as follows:
In formula, dabFor identification parameter value corresponding to selected object matching mobile client a, b, mabFor the target
Combination with information transmitted by mobile client a, b in base station, IthFor its recognition threshold；dabWhen=1, base station both ends are indicated
The binary digit symbol of transmission is opposite；dabWhen=- 1, indicate that the binary digit symbol of base station both ends transmission is identical.
Embodiment according to the present invention, the S6 are specifically included: to both ends matching mobile client combined information into
Then information after half plus operation is carried out carrier modulation by corresponding carrier modulation code, and send out by row half plus operation
It goes；
The carrier modulation process are as follows:
In formula, tdFor base station simultaneously to its both ends mobile client send information,For base station send signal power,
dijIn the knowledge of base station combined information when being communicated for j-th of mobile client of i-th of base station one end mobile client and the other end
Other parameter value, cijFor the carrier wave tune used when j-th of the mobile client communication of i-th of base station one end mobile client and the other end
Code processed, there are two types of the information binary digits that base station is sent :+1 and -1, the carrier modulation for being respectively+1 by all identification parameter values
After code summation, right+1 carries out carrier modulation, then after the carrier modulation code summation for being -1 by all identification parameter values, p- 1 is carried
Wave modulation.
The multiple-mode radio communication method eliminated based on interference of the invention, by the mobile client for executing two-way communication
Multi-mode matching mapping carrier wave modulation code allocation table is established at end, then by carrier modulation corresponding to all mobile clients in one end
Code is directly summed, and is executed interference according to obtained combined information and eliminated, and interference had both been greatly reduced, and also improves system appearance
Amount has beneficial technical effect.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Attached drawing 1 shows the multiple-mode radio communication method process of embodiment according to the present invention eliminated based on interference
Figure.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
Embodiment according to the present invention proposes a kind of multiple-mode radio communication method eliminated based on interference, such as attached drawing 1
It is shown, which comprises
S1, base station execute pre-configuration to the multiple mobile clients for participating in communication；The pre-configuration includes: that the base station is built
Vertical multi-mode matching mapping graph and execution parameter configuration initialization operation, then to send the both ends mobile client group of communication request
It is responded, analyze the communication request and establishes multi-mode matching mapping carrier wave modulation code allocation table, moved so that both ends match
Client starts to communicate；
S2, base station both ends mobile client simultaneously to base station send information；Base station one end some mobile client LiIt will
Carrier modulation code corresponding to all mobile clients of the other end communicated with is directly summed, i.e. mobile client LiMore
Pattern match maps all non-zero point value summations of corresponding row in carrier wave modulation code allocation table, with the sum of carrier modulation code pair
It is sent after transmitting information by carrier modulation；Similarly, some mobile client of base station other end RjBy the one end communicated with institute
The carrier modulation code for having mobile client group to answer directly is summed, i.e. mobile client RjCarrier modulation is mapped in multi-mode matching
All non-zero point values summations of corresponding column in code allocation table, then with the sum of the carrier modulation code to transmitting information by carrier wave tune
It is sent after system；
S3, base station are captured and are locked to the information received, then with corresponding carrier modulation code to capture and locking
After information carrier demodulation afterwards, the combined information that its both ends matching mobile client sends information is obtained；
S4, base station in turn execute interference to the combined information of each pair of mobile client obtained after carrier wave demodulation and eliminate behaviour
Make；
S5, setting recognition threshold
WhereinThe respectively real-time signal strength of both ends mobile client that receives of base station,
paAnd qbThe transmission power of respectively optional object matching mobile client a, b；laAnd rbRespectively object matching mobile client
The binary piece of information for holding a, b to send；αaAnd αbFor the weak parameter of channel corresponding to mobile client a, b, then object matching moves
Criterion of identification corresponding to dynamic client a, b are as follows:
In formula, dabFor identification parameter value corresponding to selected object matching mobile client a, b, mabFor the target
Combination with information transmitted by mobile client a, b in base station, IthFor its recognition threshold；dabWhen=1, base station both ends are indicated
The binary digit symbol of transmission is opposite；dabWhen=- 1, indicate that the binary digit symbol of base station both ends transmission is identical；
S6, base station, which execute, to be identified and obtains recognition result；Half is carried out to the combined information of both ends matching mobile client to add
Then information after half plus operation is carried out carrier modulation by corresponding carrier modulation code, and send by operation；
The carrier modulation process are as follows:
In formula, tdFor base station simultaneously to its both ends mobile client send information,The signal function sent for base station
Rate, dijIn base station combined information when being communicated for j-th of mobile client of i-th of base station one end mobile client and the other end
Identification parameter value, cijFor the carrier wave used when j-th of the mobile client communication of i-th of base station one end mobile client and the other end
Modulation code, there are two types of the information binary digits that base station is sent :+1 and -1, the carrier wave tune for being respectively+1 by all identification parameter values
After code summation processed, right+1 carries out carrier modulation, then after the carrier modulation code summation for being -1 by all identification parameter values, p- 1 is carried out
Carrier modulation；
S7, mobile client termination collect mail and cease and carry out carrier wave demodulation with corresponding carrier modulation code, obtain base station transmission
Combined information:
In formula, uabFor object matching mobile client a, b, i.e., a-th of base station one end mobile client receive and its
Information after b-th of mobile client carrier wave demodulation of the other end of communication, αaFor the weak coefficient of channel, LcFor the length of modulation sequence
Degree, p are to send power, infabFor the interference in transmission, n0For white Gaussian noise, T indicates transposition；What the combined information included does
It disturbs are as follows:
In formula, cij≠cabIndicate cijIt is to remove object matching communication mobile client cabThe mobile visitor of remaining matching in addition
Carrier modulation code corresponding to the end of family；
S8, mobile client end execute interference cancellation operation: specific method is identical as the interference elimination method that base station executes,
Firstly, the expression formula interfered
Then, mobile client end subtracts the interference in the reception information that carrier wave demodulation goes out, that is, completes interference and eliminate；
Information after S9, identification interference elimination；The identification process are as follows:
Firstly, calculating identification parameter value
Wherein, uabInformation after being eliminated for interference；
Then, information identification is carried out according to mobile client local information, the identification parameter value is
In formula, rabFor information recognition result.
Embodiment according to the present invention, the base station of the step S1 execute the multiple mobile clients for participating in communication pre-
Configuration specifically include the following steps:
S1-1, establish multi-mode matching mapping graph: base station according to both ends mobile client quantity establish one it is correspondingly sized
Matching relationship table, dimension be m × n rank, the initial value of the table point value is zero, m and n is respectively the line number and columns of table, table
Show the communication mobile client sum at base station both ends；Each point value in m × n rank table is also distinguished with natural number subscript i and j
As its row identifier and column identifier, and the maximum value of i and j is respectively m and n, so that in the multi-mode matching mapping graph
All point values are all corresponded with the matching mobile client at base station both ends；
S1-2, in the multi-mode matching mapping graph, base station is requested according to mobile client, request communication mobile visitor
Table point value corresponding to the group of family end is set to 1, and table point value corresponding to the mobile client group of no communication request is set to 0；
S1-3, base station traverse the multi-mode matching mapping graph, have the mobile client group of communication request to distribute for every a pair
One carrier modulation code, and be stored in matching relationship carrier modulation code allocation table.
Embodiment according to the present invention, in the step S2, base station one end some mobile client LiIt will communicate with
All mobile clients of the other end corresponding to carrier modulation code directly sum, then with the sum of the carrier modulation code to information two
System position is sent after carrying out carrier modulation, carrier modulation information tiMathematic(al) representation are as follows:
In formula, tiIt is the carrier modulation information that base station receives, αiFor the weak coefficient of channel, piIt is the movement that identifier is i
The signal transmitting power of client, liIt is the information binary digit that it sends, liValue be ± 1, cijFor i-th of base station one end
Mobile client corresponding carrier modulation code when being communicated with j-th of mobile client of the other end.
Embodiment according to the present invention, in the step S3, base station is captured and is locked to it with corresponding carrier modulation code
Information carrier demodulation after fixed, obtains the combined information of its both ends matching mobile client are as follows:
In formula, mabIt is base station when both ends identifier is respectively the matching mobile client communication of a and b, after carrier wave demodulation
Obtained combined information, tupFor the sum of the carrier modulation information that all mobile clients in both ends that base station receives are sent, c is to move
The carrier modulation code communicated between dynamic client, under be designated as the identifier of base station both ends mobile client, subscript T indicates it
For the transposed vector of carrier modulation code, LcFor the length of carrier modulation code sequence, liAnd rjRespectively base station both ends identifier is distinguished
For the information binary digit of the mobile client of i and j, p and q are respectively the mobile client that the both ends identifier is respectively i and j
Signal transmitting power, inf be transmission in more mobile clients interference, n0For white Gaussian noise.
Embodiment according to the present invention, the in turn each pair of movement to being obtained after carrier wave demodulation of the base station of the step S4
The combined information of client executes interference cancellation operation and specifically includes:
S4-1, when the object matching mobile client of communication be respectively base station both ends a-th of mobile client and b-th
When mobile client, then the combined information of selected object matching mobile client a, b seeks to execute interference elimination for it
All information, at this point, the information transmitted between other non-targeted mobile client groups is all considered as interference；
S4-2, go out it in the combined information of base station with the carrier modulation code carrier wave demodulation of non-targeted matching mobile client；
S4-3, with the carrier modulation code of current goal matching mobile client a, b and the non-targeted mobile client that matches
Carrier modulation code makees cross-correlation, and by the value of the cross-correlation multiplied by combined information obtained in step S4-2, obtained product,
It is exactly the interference inf that all non-targeted matching mobile client groups are generated in current matching mobile client a, bab, expression formula
Are as follows:
S4-4, interference inf is subtracted in the combined information of current selected object matching mobile client a, bab, complete interference
It eliminates.
Embodiment according to the present invention in the method, carries out interference for some object matching mobile client and builds
When mould, it is necessary to carry out carrier wave demodulation to the information of other non-targeted matching mobile clients, and after obtained carrier wave demodulation
Binary piece of information is also to be disturbed；Carrier wave demodulation information when in order to eliminate interference is more ideal, using being cyclically updated
Mode carry out interference elimination；I.e. for the combined information of each pair of communication mobile client, every primary interference of progress is eliminated, energy
Its ideal combined information is obtained, then identical interference is carried out again with the ideal combined information and eliminates behaviour
Make, so that the combined information is more ideal；After being repeatedly cyclically updated, more satisfactory matching mobile client can be obtained
Combined information；That is, interference elimination treatment repeatedly is cyclically updated to the step S4 and S8 execution when actual transmissions, until
The recovery ideality of information reaches sets requirement.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention answers the protection model with claim
Subject to enclosing.
Claims (3)
1. a kind of multiple-mode radio communication method eliminated based on interference, which comprises
S1, base station execute pre-configuration to the multiple mobile clients for participating in communication；
S2, base station both ends mobile client simultaneously to base station send information；It specifically includes: some mobile client of base station one end
LiCarrier modulation code corresponding to all mobile clients of the other end communicated with is directly summed, i.e. mobile client Li
All non-zero point values summations of corresponding row in multi-mode matching mapping carrier wave modulation code allocation table, with the carrier modulation code it
With to being sent after transmitting information by carrier modulation；Similarly, some mobile client of base station other end RjOne will communicated with
The carrier modulation code for holding all mobile client groups to answer directly is summed, i.e. mobile client RjCarrier wave is mapped in multi-mode matching
All non-zero point values summations of corresponding column in modulation code allocation table, then carried with the sum of the carrier modulation code to transmitting information by
It is sent after wave modulation；
S3, base station are captured and are locked to the information received, then with corresponding carrier modulation code to capture and locking after
After information carrier demodulation, the combined information that its both ends matching mobile client sends information is obtained；Specifically include: base station is with accordingly
Carrier modulation code it is captured and is locked after information carrier demodulation, obtain its both ends matching mobile client combined information
Are as follows:
In formula, mabIt is base station when both ends identifier is respectively the matching mobile client communication of a and b, is obtained after carrier wave demodulation
Combined information, tupFor the sum of the carrier modulation information that all mobile clients in both ends that base station receives are sent, c is mobile visitor
The carrier modulation code communicated between the end of family, under be designated as the identifier of base station both ends mobile client, subscript T indicates it to carry
The transposed vector of wave modulation code, LcFor the length of carrier modulation code sequence, liAnd rjRespectively base station both ends identifier is respectively i
With the information binary digit of the mobile client of j, inf is more mobile clients interference in transmission, n0For white Gaussian noise；m
It is the maximum value of i and j, p respectively with naAnd qbThe transmission power of respectively optional object matching mobile client a, b；laAnd rb
The respectively binary piece of information of object matching mobile client a, b transmission；αaAnd αbFor letter corresponding to mobile client a, b
The weak parameter in road, αiAnd αjFor the weak coefficient of channel, piIt is the signal transmitting power for the mobile client that identifier is i, qjIt is to know
Alias is the signal transmitting power of the mobile client of j；
S4, base station in turn execute interference cancellation operation to the combined information of each pair of mobile client obtained after carrier wave demodulation；
S5, setting recognition threshold；
S6, base station are executed according to recognition threshold to be identified and obtains recognition result；
S7, mobile client termination collect mail and cease and carry out carrier wave demodulation with corresponding carrier modulation code；
S8, mobile client end execute interference cancellation operation；
Information after S9, identification interference elimination.
2. the setting recognition threshold of a kind of the method as described in claim 1, the S5 specifically includes:
Threshold value
WhereinThe respectively real-time signal strength of both ends mobile client that receives of base station, paAnd qb
The transmission power of respectively optional object matching mobile client a, b；laAnd rbRespectively object matching mobile client a, b
The binary piece of information of transmission；αaAnd αbFor the weak parameter of channel corresponding to mobile client a, b, then object matching is mobile objective
Criterion of identification corresponding to family end a, b are as follows:
In formula, dabFor identification parameter value corresponding to selected object matching mobile client a, b, mabIt is mobile for the object matching
Combination of the information transmitted by client a, b in base station, IthFor its recognition threshold；dabWhen=1, the transmission of base station both ends is indicated
Binary digit symbol is opposite；dabWhen=- 1, indicate that the binary digit symbol of base station both ends transmission is identical.
3. a kind of method according to claim 2, the S6 is specifically included: to the combined information of both ends matching mobile client
Half plus operation are carried out, then, the information after half plus operation is carried out by carrier modulation by corresponding carrier modulation code, and send out
It goes；
The carrier modulation process are as follows:
In formula, tdFor base station simultaneously to its both ends mobile client send information,For the signal power that base station is sent, dij
In the identification of base station combined information when being communicated for j-th of mobile client of i-th of base station one end mobile client and the other end
Parameter value, cijFor the carrier modulation used when j-th of the mobile client communication of i-th of base station one end mobile client and the other end
Code, there are two types of the information binary digits that base station is sent :+1 and -1, the carrier modulation code for being respectively+1 by all identification parameter values
After summation, right+1 carries out carrier modulation, then after the carrier modulation code summation for being -1 by all identification parameter values, p- 1 carries out carrier wave
Modulation.
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| CN101677456A (en) * | 2008-09-16 | 2010-03-24 | 中兴通讯股份有限公司 | Method for sending and receiving interference control signaling in wireless communication system |
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| FR2865600B1 (en) * | 2004-01-26 | 2006-05-19 | Evolium Sas | DYNAMIC ADAPTATION OF DETECTION OF ACCESS DEMANDS TO A CELLULAR COMMUNICATIONS NETWORK, BASED ON THE RADIO ENVIRONMENT ASSOCIATED WITH THE APPLICANT COMMUNICATION EQUIPMENT |
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| CN101677456A (en) * | 2008-09-16 | 2010-03-24 | 中兴通讯股份有限公司 | Method for sending and receiving interference control signaling in wireless communication system |
| CN103312389A (en) * | 2012-03-06 | 2013-09-18 | 华为技术有限公司 | Multiuser interference suppression method, terminal and base station |
| CN103826257A (en) * | 2012-11-19 | 2014-05-28 | 北京三星通信技术研究有限公司 | Interference eliminating method, system and device, and UE |
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