CN103944626B - A kind of multi-antenna diversity merging method and device - Google Patents
A kind of multi-antenna diversity merging method and device Download PDFInfo
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- CN103944626B CN103944626B CN201410145519.9A CN201410145519A CN103944626B CN 103944626 B CN103944626 B CN 103944626B CN 201410145519 A CN201410145519 A CN 201410145519A CN 103944626 B CN103944626 B CN 103944626B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a kind of multi-antenna diversity merging method and device, the channel condition information fed back according to receiving terminal obtains whole channel gains for sending branch of transmitting terminal；Total sending power consumption is calculated according to the channel gain for all sending branch；It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum.By the above method and device, transmitting terminal can be made to be optimal efficiency.
Description
Technical field
The present invention relates to wireless communication technology field, in particular, be related to a kind of multi-antenna diversity merging method and
Device.
Background technology
Transmitting terminal multi-antenna diversity technology is a kind of effective means for resisting radio channel multi-path decline, and multi-antenna diversity
Consolidation strategy, the influence to transmitting terminal efficiency is most important.
The power consumption of transmitting terminal is made up of two parts of transmitting power consumption and circuit power consumption.In the prior art, conventional one kind
Multi-antenna diversity consolidation strategy is that general diversity merges system, i.e. by reducing transmission number of branches and then sacrificing part point
Diversity gain is to reduce circuit power consumption.For transmitting terminal, number of branches is sent if reduced simply, circuit power consumption can be reduced really.
However, the reduction due to sending number of branches, can cause the decline of link gain, can increase the transmitting power consumption of transmitting terminal on the contrary,
Therefore, the existing multi-antenna diversity merging method for reducing transmission number of branches simply can not make transmitting terminal be optimal energy
Effect.
The content of the invention
In view of this, the invention provides a kind of multi-antenna diversity merging method and device, with overcome in the prior art by
It can not make the problem of transmitting terminal is optimal efficiency in the multi-antenna diversity merging method for reducing transmission number of branches simply.
To achieve the above object, the present invention provides following technical scheme：
A kind of multi-antenna diversity merging method, methods described includes：
The channel condition information fed back according to receiving terminal, obtains the channel gain of whole branches of transmitting terminal；
Total sending power consumption is calculated according to the channel gain for all sending branch；
It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum.
It is preferred that, it is described to be specifically included according to the total sending power consumption of channel gain calculating for all sending branch：
According to formulaAndCalculate LcThe individual total transmission work(for sending branch
Consumption；
Wherein, P0It is the circuit power consumption of each transmission branch,It is to choose LcThe hair of transmitting terminal always after individual transmission branch
Power consumption is penetrated, η is the efficiency of amplifier, N0It is thermal noise power spectrum density, B is system bandwidth,It is the merging letter of Lc branch
Road power gain, i.e.,For LcIt is individual to send the channel increasing that each in branch sends branch
Benefit.
It is preferred that, it is described to determine when total sending power consumption is minimum that corresponding transmission branches into transmission to be combined and branched into and wait to close
And transmission branch specifically include：
From the transmission branch γ that channel gain is maximum1Start, judge that each channel for sending branch of transmitting terminal increases successively
Beneficial γl（1≤l≤L）Whether inequality Γ is metl-1>f(γl)；
Wherein,P0It is each point
The circuit power consumption of branch, L is whole quantity for sending branch of transmitting terminal, and R is target spectral efficiency, and η is the efficiency of amplifier, N0
It is thermal noise power spectrum density, B is system bandwidth, γ1≥γ2≥...≥γL；
As channel gain γl（1≤l≤L）Meet inequality Γl-1>f(γl) when, determine γl（L ∈ [1, l]）It is corresponding
Transmission branches into transmission branch to be combined, and it is l to merge branch's number.
A kind of multi-antenna diversity merges device, and described device includes：
Channel gain acquiring unit, for the channel condition information fed back according to receiving terminal, obtains whole hairs of transmitting terminal
Send the channel gain of branch；
Total sending power consumption computing unit, for calculating total sending power consumption according to the channel gain for all sending branch；
Transmission branch to be combined determining unit, corresponding transmission branches into be combined during for determining that total sending power consumption is minimum
Transmission branch.
It is preferred that, total sending power consumption computing unit specifically for：
According to formulaAndCalculate LcThe individual total transmission work(for sending branch
Consumption；
Wherein, P0It is the circuit power consumption of each transmission branch,It is to choose LcThe hair of transmitting terminal always after individual transmission branch
Power consumption is penetrated, η is the efficiency of amplifier, N0It is thermal noise power spectrum density, B is system bandwidth,It is LcThe merging letter of individual branch
Road power gain, i.e.,For LcIt is individual to send the channel increasing that each in branch sends branch
Benefit.
It is preferred that, it is described it is to be combined transmission branch's determining unit specifically for：
From the transmission branch γ that channel gain is maximum1Start, judge that each channel for sending branch of transmitting terminal increases successively
Beneficial γl（1≤l≤L）Whether inequality Γ is metl-1>f(γl)；
Wherein,P0It is each branch
Circuit power consumption, L is whole quantity for sending branches of transmitting terminal, and R is target spectral efficiency, and η is the efficiency of amplifier, N0It is
Thermal noise power spectrum density, B is system bandwidth, γ1≥γ2≥...≥γL；
As channel gain γl（1≤l≤L）Meet inequality Γl-1>f(γl) when, determine γl（L ∈ [1, l]）It is corresponding
Transmission branches into transmission branch to be combined, and it is l to merge branch's number.
Understand that compared with prior art, the invention discloses a kind of merging of multi-antenna diversity via above-mentioned technical scheme
Method and device, the channel condition information fed back according to receiving terminal obtains whole channel gains for sending branch of transmitting terminal；Root
Total sending power consumption is calculated according to the channel gain for all sending branch；It is determined that corresponding transmission branch when always sending power consumption is minimum
For transmission branch to be combined.By the above method and device, transmitting terminal can be made to be optimal efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of idiographic flow schematic diagram of multi-antenna diversity merging method disclosed in the embodiment of the present invention one；
Fig. 2 is the concrete structure schematic diagram that a kind of multi-antenna diversity disclosed in the embodiment of the present invention three merges device.
Embodiment
For the sake of quoting and understanding, the explanation of the technical term hereinafter used, write a Chinese character in simplified form or abridge and be summarized as follows：
TAS：Transmit Antenna Selection, transmission antenna selection；
TBF：Transmit Beamforming, transmission antenna beam forming；
GSC：General Selection and Combining, are typically chosen with merging.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc. are to be used to distinguish
Similar object, without for describing specific order or precedence.It should be appreciated that the term so used is in appropriate feelings
It can be exchanged under condition, this is only the differentiation for describing to use the object of same alike result in description in embodiments of the invention
Mode.In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive to be included, so as to
Process, method, system, product or equipment comprising a series of units are not necessarily limited to those units, but may include unclear
Other units that ground is listed or for these processes, method, product or equipment inherently.
From background technology, in the prior art, reduce the multi-antenna diversity merging method of transmission number of branches simply simultaneously
Transmitting terminal can not be made to be optimal efficiency.
Therefore, the invention provides a kind of multi-antenna diversity merging method and device, the channel shape fed back according to receiving terminal
State information, obtains whole channel gains for sending branch of transmitting terminal；Calculated according to the channel gain for all sending branch
Total sending power consumption；It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum.Pass through the above method
And device, transmitting terminal can be made to be optimal efficiency.
The concrete structure of the idiographic flow and said apparatus that are related to the above method will be carried out in detail by following examples
Thin description.
Embodiment one
Accompanying drawing 1 is referred to, is that a kind of idiographic flow of multi-antenna diversity merging method shows disclosed in the embodiment of the present invention one
It is intended to, this method is specifically included：
S101：The channel condition information fed back according to receiving terminal, obtains whole channel gains for sending branch of transmitting terminal.
S102：Total sending power consumption is calculated according to the channel gain for all sending branch.
S103：It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum.
It should be noted that total minimum corresponding transmission branch number of sending power consumption is not necessarily minimum.
A kind of multi-antenna diversity merging method is present embodiments provided, the channel condition information fed back according to receiving terminal is obtained
Obtain whole channel gains for sending branches of transmitting terminal；Total transmission work(is calculated according to the channel gain for all sending branch
Consumption；It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum.By the above method, hair can be made
Sending end is optimal efficiency.
On the basis of the invention described above disclosed embodiment, the embodiment of the invention also discloses a kind of more specifically many
Antenna diversity merging method embodiment, will be described in detail by following examples below.
Embodiment two
One typical multi-antenna diversity emission system.Transmitting terminal has L diversity branch, and each diversity branch represents hair
Antennas is to an independent channel between reception antenna.Branch l (l ∈ [1,2 ..., L]) channel power gain can be represented
For γl, average value is。
As only branch max { γlFor when sending data, this is TAS patterns.When all branches are merged by MRC
When sending data, simply TBF patterns.More generally scene is the maximum L of selection diversity gainc(1≤Lc≤ L) individual branch.This is just
TAS and TBF mixed mode, i.e. GSC patterns.
Total sending power consumption PcIt can be modeled as：Wherein P0It is the circuit power consumption of each branch,It is to choose LcAfter individual branch, the transmitting power consumption of transmitting terminal always, η is the efficiency of amplifier.
In given target spectral efficiency R,It may be calculated：Wherein N0It is thermal noise
Power spectral density, B is system bandwidth,It is LcThe merging channel power gain of individual branch, i.e.,
In the present embodiment, γ1≥γ2≥...≥γL, the transmission power of each antenna is in the linear amplification region of amplifier
In domain.In order to maximize the efficiency of transmitting terminal, the main target that the multi-antenna selection proposed by the present invention based on efficiency merges is just
It is under target spectral efficiency R, to minimize total circuit power consumption.When l branching ratio of selection selects the energy that l-1 branch is consumed
When consumption will be low, it should meet following inequality, i.e.,：
Inequality can be represented as：
Γl-1<f(γl), wherein,
That is, when meeting above-mentioned inequality, it is l to merge branch's number.
Overall, it is assumed that merging branch number when transmitting terminal efficiency is optimal is LC, then,
In the present embodiment, multi-antenna selection based on efficiency merges mechanism by finding the diversity gain of multiple antennas and many
Optimal compromise between antenna circuit power consumption, to improve the efficiency of transmitting terminal.
Method is described in detail in the invention described above disclosed embodiment, the method for the present invention can take various forms
Device realize, therefore the invention also discloses a kind of device, specific embodiment is given below and is described in detail.
Embodiment three
Accompanying drawing 2 is referred to, is that a kind of concrete structure of multi-antenna diversity merging device shows disclosed in the embodiment of the present invention three
It is intended to, the device is specifically included such as lower unit：
Channel gain acquiring unit 11, for the channel condition information fed back according to receiving terminal, obtains the whole of transmitting terminal
Send the channel gain of branch.
Total sending power consumption computing unit 12, work(is always sent for being calculated according to the channel gain for all sending branch
Consumption.
Total sending power consumption computing unit specifically for：
According to formulaAndCalculate LcThe individual total transmission work(for sending branch
Consumption；
Wherein, P0It is the circuit power consumption of each transmission branch,It is to choose LcThe hair of transmitting terminal always after individual transmission branch
Power consumption is penetrated, η is the efficiency of amplifier, N0It is thermal noise power spectrum density, B is system bandwidth,It is LcThe merging letter of individual branch
Road power gain, i.e.,For LcIt is individual to send the channel increasing that each in branch sends branch
Benefit.
Transmission branch to be combined determining unit 13, corresponding transmission, which is branched into, during for determining that total sending power consumption is minimum waits to close
And transmission branch.
It is described it is to be combined transmission branch's determining unit specifically for：
From the transmission branch γ that channel gain is maximum1Start, judge that each channel for sending branch of transmitting terminal increases successively
Beneficial γl（1≤l≤L）Whether inequality Γ is metl-1>f(γl)；
Wherein,P0It is each branch
Circuit power consumption, L is whole quantity for sending branches of transmitting terminal, and R is target spectral efficiency, and η is the efficiency of amplifier, N0It is
Thermal noise power spectrum density, B is system bandwidth, γ1≥γ2≥...≥γL；
As channel gain γl（1≤l≤L）Meet inequality Γl-1>f(γl) when, determine γl（L ∈ [1, l]）It is corresponding
Transmission branches into transmission branch to be combined, and it is l to merge branch's number.
Described in detail in embodiment of the method it should be noted that the concrete function of above-mentioned unit is realized, this reality
Example is applied to repeat no more.
In summary：
The invention discloses a kind of multi-antenna diversity merging method and device, the channel status fed back according to receiving terminal is believed
Breath, obtains whole channel gains for sending branch of transmitting terminal；Total hair is calculated according to the channel gain for all sending branch
Send power consumption；It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum.Pass through the above method and dress
Put, transmitting terminal can be made to be optimal efficiency.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
In addition it should be noted that, device embodiment described above be only it is schematical, wherein it is described as separation
The unit of part description can be or may not be it is physically separate, the part shown as unit can be or
It can not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Some or all of module therein is selected to realize the purpose of this embodiment scheme the need for border.In addition, what the present invention was provided
In device embodiment accompanying drawing, the annexation between module represents there is communication connection between them, specifically can be implemented as one
Bar or a plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, you can with
Understand and implement.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can be borrowed
Software is helped to add the mode of required common hardware to realize, naturally it is also possible to include application specific integrated circuit, specially by specialized hardware
Realized with CPU, private memory, special components and parts etc..Generally, all functions of being completed by computer program can
Easily realized with corresponding hardware, moreover, can also be a variety of many for the particular hardware structure for realizing same function
Sample, such as analog circuit, digital circuit or special circuit.But, it is more for the purpose of the present invention in the case of software program it is real
It is now more preferably embodiment.Understood based on such, technical scheme is substantially made to prior art in other words
The part of contribution can be embodied in the form of software product, and the computer software product is stored in the storage medium that can be read
In, such as floppy disk of computer, USB flash disk, mobile hard disk, read-only storage（ROM, Read-Only Memory）, random access memory
Device（RAM, Random Access Memory）, magnetic disc or CD etc., including some instructions are to cause a computer to set
It is standby（Can be personal computer, server, or network equipment etc.）Perform the method described in each embodiment of the invention.
In summary, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to upper
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to upper
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a kind of multi-antenna diversity merging method, it is characterised in that methods described includes：
The channel condition information fed back according to receiving terminal, obtains the channel gain of whole branches of transmitting terminal；
Total sending power consumption is calculated according to the channel gain for all sending branch；
It is determined that corresponding transmission branches into transmission branch to be combined when always sending power consumption is minimum；
Wherein, it is described to be specifically included according to the total sending power consumption of channel gain calculating for all sending branch：
According to formulaAndCalculate LcThe individual total sending power consumption for sending branch；
Wherein, P0It is the circuit power consumption of each transmission branch,It is to choose LcThe transmitting work(of transmitting terminal always after individual transmission branch
Consumption, η is the efficiency of amplifier, N0It is thermal noise power spectrum density, B is system bandwidth,It is LcThe merging channel work(of individual branch
Rate gain, i.e.,γl(1≤l≤Lc) it is LcIndividual to send the channel gain that each in branch sends branch, R is target
Spectrum efficiency.
2. according to the method described in claim 1, it is characterised in that described to determine that corresponding send is divided when total sending power consumption is minimum
Branch branches into transmission branch to be combined for transmission to be combined and specifically included：
From the transmission branch γ that channel gain is maximum1Start, the channel gain γ of each transmission branch of transmitting terminal is judged successivelyl
Whether (1≤l≤L) meets inequality Γl-1＞ f (γl)；
Wherein,P0It is the electricity of each branch
Road power consumption, L is whole quantity for sending branch of transmitting terminal, and R is target spectral efficiency, and η is the efficiency of amplifier, N0It is that heat is made an uproar
Power sound spectrum density, B is system bandwidth, γ1≥γ2≥…≥γL；
As channel gain γl(1≤l≤L) meets inequality Γl-1＞ f (γl) when, determine γl(l ∈ [1, l]) is corresponding to be sent
Transmission branch to be combined is branched into, it is l to merge branch's number.
3. a kind of multi-antenna diversity merges device, it is characterised in that described device includes：
Channel gain acquiring unit, for the channel condition information fed back according to receiving terminal, whole send for obtaining transmitting terminal is divided
The channel gain of branch；
Total sending power consumption computing unit, for calculating total sending power consumption according to the channel gain for all sending branch；
Transmission branch to be combined determining unit, corresponding transmission branches into hair to be combined during for determining that total sending power consumption is minimum
Send branch；
Wherein, total sending power consumption computing unit specifically for：
According to formulaAndCalculate LcThe individual total sending power consumption for sending branch；
Wherein, P0It is the circuit power consumption of each transmission branch,It is to choose LcThe transmitting work(of transmitting terminal always after individual transmission branch
Consumption, η is the efficiency of amplifier, N0It is thermal noise power spectrum density, B is system bandwidth,It is LcThe merging channel work(of individual branch
Rate gain, i.e.,γl(1≤l≤Lc) it is LcIndividual to send the channel gain that each in branch sends branch, R is target
Spectrum efficiency.
4. device according to claim 3, it is characterised in that transmission branch's determining unit to be combined specifically for：
From the transmission branch γ that channel gain is maximum1Start, the channel gain γ of each transmission branch of transmitting terminal is judged successivelyl
Whether (1≤l≤L) meets inequality Γl-1＞ f (γl)；
Wherein,P0It is the electricity of each branch
Road power consumption, L is whole quantity for sending branch of transmitting terminal, and R is target spectral efficiency, and η is the efficiency of amplifier, N0It is that heat is made an uproar
Power sound spectrum density, B is system bandwidth, γ1≥γ2≥…≥γL；
As channel gain γl(1≤l≤L) meets inequality Γl-1＞ f (γl) when, determine γl(l ∈ [1, l]) is corresponding to be sent
Transmission branch to be combined is branched into, it is l to merge branch's number.
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Address after: 230000 Lotus Road, Feidong Economic Development Zone, Hefei City, Anhui Province Patentee after: Anhui ultra clear Polytron Technologies Inc Address before: 230088 Room C201, Science Park, Hefei National University, No. 602, Hefei Hi-tech Zone, Anhui Province Patentee before: Anhui Chaoqing Information Engineering Co., Ltd. |