CN103368623B - The system of selection of non-coupled antenna combination and device in antenna array - Google Patents
The system of selection of non-coupled antenna combination and device in antenna array Download PDFInfo
- Publication number
- CN103368623B CN103368623B CN201210090846.XA CN201210090846A CN103368623B CN 103368623 B CN103368623 B CN 103368623B CN 201210090846 A CN201210090846 A CN 201210090846A CN 103368623 B CN103368623 B CN 103368623B
- Authority
- CN
- China
- Prior art keywords
- antenna
- coupled
- index
- stage
- combination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention provides a kind of square law device selecting the antenna for receiving and dispatching data in antenna array. According to one embodiment of the invention, the method comprises: the set producing all non-coupled antenna combination in antenna array; And in described set, select non-coupled antenna combination Ss,Wherein f () needs maximized target function;It is non-coupled antenna combination S in corresponding described settChannel estimating. Though the present invention is based on the selection of receiving antenna but selected antenna can be used for transmitting-receiving data, and complicated calculating and huge system overhead can not be caused; There is good energy efficiency and performance simultaneously.
Description
Technical field
The invention relates to the system of selection of a kind of antenna combination and device, especially about system of selection and the device of non-coupled antenna combination in antenna array.
Background technology
It is well known that for compact arranged antenna array, the mutual coupling between antenna can reduce energy efficiency. And the trend along with wireless communications products miniaturization, the demand of the transceiver of mini-, compact type is also day by day strong. But the degradation how avoiding in these small-sized transceivers the mutual coupling between antenna to cause also is the difficult problem that industry rather perplexs.
For addressing this problem, " the mutual coupling for compact type transmit antenna array is cancelled " (J.ChenandK.Wu, " Mutualcouplingcancellationforcompacttransmitantennaarray s ", inProc.IEEEWirelesCommunicationsandNetworkingConf., Mar.2011) literary composition discloses one method, it carries out transmission end compensating for coupling, although system performance can be improved when transmit power limited, but cannot prevent energy efficiency from declining.
In addition, " for having the Receiving antenna selection of the compact arranged antenna of coupling mutually " (Z.Xu, S.SfarandR.Blum, " Receiveantennaselectionforclosely-spacedantennaswithmutu alcoupling ", IEEETransactionsonWirelessCommunications, Vol.9, No.2. (February2010), pp.652-661) literary composition then discloses another method: owing to received RF link (receiveRFchain) is far fewer than receiving antenna, all available radio frequency links can work simultaneously and make antenna subset selection by receiving the theoretical model of coupled matrix.Receiving antenna except selecting may be coupled, and its antenna subset selection method also exists some other shortcomings. Such as because there is coupling, the receiving antenna of selection can not be used as transmit antenna; It needs to be determined that the quantity of received RF link, and this quantity changes with propagation conditions; And due to the coupling between receiving antenna, more received RF link also may bring worse performance. In addition, theoretical model is used to calculate reception coupled antenna although proposing, but owing to self and phase transimpedance are with environmental factors, as temperature and humidity change, this method is unactual.
Owing to current technology exists the shortcoming of this or that, the energy efficiency how improving mini-transceiver still needs technical scheme perfect further.
Summary of the invention
It is an object of the present invention to provide the system of selection of a kind of non-coupled antenna combination and device, it is applicable to compact antenna array row and can not reduce energy efficiency.
One embodiment of the invention provides a kind of method selecting the antenna for receiving and dispatching data in antenna array, and the method comprises: the set producing all non-coupled antenna combination in antenna array; And in described set, select non-coupled antenna combination Ss,Wherein f () needs maximized target function;It is non-coupled antenna combination S in corresponding described settChannel estimating.
In one embodiment, producing the set of all non-coupled antenna combination in antenna array is one based on the exhaustive search method of tree, and it comprises and produces non-coupled antenna tree and based on non-coupled antenna tree refinement non-coupled antenna combination. Wherein generation non-coupled antenna tree comprises the root node of setting non-coupled antenna tree further is empty, and other node is then the index of each antenna in antenna array; Set each antenna in each child node respective antenna array of described node; Then producing the child node of each child node of root node, the rest may be inferred produces child node not at the same level. The antenna of the upper one-level that the respective antenna of the child nodes at different levels of non-coupled antenna tree is corresponding with it is not coupled, and the big one-level thereon of the antenna index of child node at different levels. Refining non-coupled antenna combination and comprise the branch upwards checking the non-coupled antenna tree produced under certainly further, recording the antenna index on each branch is a non-coupled antenna combination St, wherein t is the index of the branch of record; If the antenna index on brachyplast wooden fork is included in the non-coupled antenna combination of the long shoot wooden fork recorded, then no longer record the antenna index on this brachyplast wooden fork. In one embodiment, the method comprises further and carries out receiving end coupled matrix estimation, and to the efficient channel estimation when receiving mode work simultaneously of all antennas in antenna array;It is estimate to estimate with efficient channel based on receiving end coupled matrix. In one embodiment, the present invention provides a kind of method carrying out receiving end coupled matrix estimation, its comprise by the antenna in antenna array from nature index turn into 2-d index thus produce the grouping of non-coupled antenna; The channel estimating of respective antenna is carried out stage by stage based on grouping; And estimate receiving end coupled matrix. Wherein the grouping of generation non-coupled antenna comprises further and the antenna in antenna array is divided into L group, and each group comprises K root antenna; It is included in L+1 stage further based on the channel estimating carrying out respective antenna and makes channel estimating, work as l=1 ... during L, the antenna of 1-1 group is only had to open the l stage; As l=L+1, the l stage, all antennas are all opened.Described receiving end coupled matrix is calculated by the channel estimation results in comprehensive L+1 stage. In another embodiment, the method comprise further respectively the antenna in each non-coupled antenna combination in set is made correspondence channel estimating when receiving mode work so that it is determined that
Another embodiment of the present invention additionally provides the device selecting the antenna for receiving and dispatching data in antenna array, and this device comprises: set generation device, for generation of the set of non-coupled antenna combination all in antenna array; And non-coupled antenna selection apparatus, in set, select non-coupled antenna combination Ss,Wherein f () needs maximized target function;It is non-coupled antenna combination S in corresponding settChannel estimating.
In one embodiment, this device comprises for the receiving end coupled matrix estimation device of receiving end coupled matrix estimation and the channel estimating apparatus for channel estimating further; This channel estimating apparatus performs the simultaneously efficient channel estimation when receiving mode work of all antennas in antenna array. In another embodiment, this device comprises the channel estimating apparatus for channel estimating further, respectively the antenna in each non-coupled antenna combination in set is made correspondence channel estimating when receiving mode work so that it is determined that
Compared to relatively prior art, the present invention can obtain better properties and energy efficiency when use same antenna array, and can not cause big system overhead. In addition namely the present invention achieves, by Receiving antenna selection, the problem that selected antenna can be used for receiving and dispatching data, and calculating in chosen process is not complicated.
Accompanying drawing explanation
Fig. 1 is the schema of the method selecting the antenna for receiving and dispatching data according to an embodiment of the invention in antenna array;
Fig. 2 is the structure block diagram of the device selecting the antenna for receiving and dispatching data in antenna array of embodiment in corresponding diagram 1;
Fig. 3 is the schema of round-the-clock according to an embodiment of the invention receiving end coupled matrix method of estimation;
Fig. 4 is the exemplary plot of the antenna array that the antenna array of nature index turns into 2-d index according to one embodiment of the invention;
Fig. 5 is the schematic diagram processing sequence according to an embodiment of the invention;
Fig. 6 is the schematic diagram of non-coupled antenna tree according to an embodiment of the invention; And
Fig. 7 is the transmit receive unit to one embodiment of the invention and the emulation result of an existing transmit receive unit.
Embodiment
Spirit for a better understanding of the present invention, it is described further by the part preferred embodiment below in conjunction with the present invention.
In time-division duplex (TDD, time-divisionduplex) system, wireless channel is mutual, and namely transmitting wireless channel with receiving wireless channel is can mutually conjugate (transpose). For using the small-sized transmit receive unit of compact antenna array row, when all antennas in same day linear array work simultaneously, just can produce coupling mutually between antenna and cause energy to decline.
The present invention selects the method for the antenna for receiving and dispatching data and device to solve the above problems in compact antenna array arranges. What such as one embodiment of the invention provided selects the method for the antenna receiving and dispatching data to comprise the set producing all non-coupled antenna combination in antenna array; And select non-coupled antenna combination S in sets,Wherein f () needs maximized target function;It is non-coupled antenna combination S in corresponding described settChannel estimating. According to the present invention, the antenna in the non-coupled antenna combination only selected, for transfer, thus avoids the reduction of energy.
Fig. 1 is the schema of the method 10 selecting the antenna for receiving and dispatching data according to an embodiment of the invention in compact antenna array arranges.The method mainly comprises the following steps: the set producing all non-coupled antenna combination in antenna array in step 100; Receiving end coupled matrix estimation is carried out in step 101; In step 102, this antenna array is carried out efficient channel estimation; In set, non-coupled antenna combination is selected in step 103; In step 104, it may also be useful to the antenna transmission data in the non-coupled antenna combination of this selection. It will be understood by a person skilled in the art that, the coupling between antenna is difficult to remove completely, and non-coupled of the present invention is relative but not absolute; Absolute non-coupled should be considered as limitation of the present invention. In addition it is noted that the step description order of this schema and be not equal to sequencing when border in fact is applied, it should not be regarded as limitation of the present invention. With reason, other method steps related in the present invention is also like this.
Fig. 2 is the structure block diagram of the device 20 selecting the antenna for receiving and dispatching data in compact antenna array arranges of embodiment in corresponding diagram 1. This device 20 can be a small-sized wireless transmitter, such as (Femtobasestation) such as user equipment (UserEquipment), portable access point (portableaccesspoints) or Home eNodeB etc. As shown in Figure 1, this device 20 mainly comprises radio frequency link relative unit 200, estimates (RCME for receiving end coupled matrix, Receiver-EndCouplingMatrixEstimation) RCME device 201, for channel estimating (CE, ChannelEstimation) CE device 202, for non-coupled sky line options (UAS, Uncoupled-antennaSelection) UAS device 203, and for receiving and dispatching the transmitting-receiving data processing equipment 204 of data processing.
Do to describe in detail to one embodiment of the invention below in conjunction with Fig. 1,2.
Assuming that compact antenna array has M root antenna, the quantity N of received RF link in arrangingR, RFEqual M, send the quantity N of radio frequency linkT, RFEqual the maximum M of not coupled antennaUc, max, it is evident that Nt,RF< NR, RF. Expensive in received RF link owing to sending rf chain great distance, the cost that thus the present invention can be lower is implemented.
First in step 100, the set generation device (not shown) in device can produce all non-coupled antenna combination S in compact antenna array rowtS set={ S0, S1... ST-1, t=0,1 ... T-1. The production method of set has multiple, one embodiment of the invention also provides a kind of rather effectively based on exhaustive search (tree-basedexhaustivesearch) method of tree, and it can produce the non-coupled antenna combination optimized for any wireless channel. The production method of this set comprises two big steps: produces non-coupled antenna tree and refines non-coupled antenna combination S based on non-coupled antenna treet, thus obtain S set.
Specifically, it is empty that generation non-coupled antenna tree is included in the root node of setting non-coupled antenna tree further, and other node is then the index of each antenna in antenna array; An antenna in each child node respective antenna array of setting root node, these child nodes equal the antenna amount in antenna array and form the first step node of antenna tree; That is, each antenna in each child node difference respective antenna array of root node; Then the child node of each child node of root node is produced, i.e. secondary first nodes; The rest may be inferred produce non-coupled antenna tree nodes at different levels. Wherein the antenna of the upper one-level that the respective antenna of child node at different levels is corresponding with it is not coupled, and the big one-level thereon of the antenna index of child node at different levels. The height (i.e. progression) of non-coupled antenna tree is the maximum number of non-coupled antenna in antenna array.
Non-coupled antenna combination S is refined based on non-coupled antenna treetThen comprise the branch upwards checking the non-coupled antenna tree produced under certainly further, record heaven, each branch path clue and be cited as a non-coupled antenna combination St, wherein t is the index of the branch of record; If brachyplast wooden fork (namely comprise progression less) on antenna index be included in the non-coupled antenna combination of the long shoot wooden fork (namely comprising progression more) recorded, then no longer record the antenna index on this brachyplast wooden fork.
In step 101, the signal y estimated for receiving end coupled matrix received by radio frequency link relative unit 200RCMEIt is transfused to RCME device 201 and estimates effective receiving end coupled matrix (RCM, Receiving-endCouplingMatrix) Cr. Now, it is assumed that the phase offside of this device 20 has estimation training airplane (ET, EstimationTrainer), on it antenna for sending training sequence for estimating receiving end coupled matrix Cr. Near field scattering (nearfieldscatters) and the environmental factors of some slow changes it is subject to due to the mutual coupling between antenna, such as the impact of temperature and humidity, it is necessary to high scattering environments (onsiterichscatteringenvironment) on conventional station; Thus require that the RCME method without scattering environments can not be applied in the present invention. And one embodiment of the invention provides the receiving end coupled matrix method of estimation 30 of a kind of round-the-clock (universal), it can be used for any communication environments. Shown in Fig. 3, this method of estimation 30 comprises three main basic steps: step 300, is turned into 2-d index from nature index thus is produced the grouping of non-coupled antenna by the antenna in antenna array; Then in step 301, the channel estimating of respective antenna is carried out stage by stage based on grouping; Receiving end coupled matrix C is estimated based on the channel estimating obtained again in step 302r, this receiving end coupled matrix CrIt is calculated by the channel estimation results in comprehensive L+1 stage.
Fig. 4 show the schematic diagram of the antenna array that the antenna array of nature index turns into 2-d index according to one embodiment of the invention. Concrete, in step 300, the M root antenna in antenna array being divided into L group, each group index is respectively 0 to L-1, and each group comprises K root antenna; Thus ignore the mutual coupling between any two antennas in each group. Then in step 301, make channel estimating respectively L+1 stage, and suppose at the wireless channel of estimation procedure it is consistent. Work as l=1 ... during L, the antenna of l-1 group is only had to open the l stage, and other all closedowns. Namely in the stage 1, the antenna of any group all can not be opened, and all antennas all cut out; K root antenna the stage 2, first group can be opened, it is possible to measures and record Kx1 efficient channel estimation h 'l-1; The rest may be inferred. As l=L+1, the l stage, all antennas are all opened, and now can measure and record Mx1 efficient channel and estimate g. Last in step 302, estimate h ' based on the efficient channel recordedl-1Receiving end coupled matrix C is estimated with grObtain receiving end coupled matrix estimated valueSuch as, the antenna for rule distributes, and normalized receiving end coupled matrix has the mutual coupling parameter of N number of the unknown, N��M. This normalized receiving end coupled matrix refers to and all diagonal elements of receiving end coupled matrix is all normalized to 1. M the about determination of equation (approximateequation) or excessively determine (overdetermined) system is comprised by solving, the individual about equation of this M comprises the mutual coupling parameter of this N number of the unknown, can determine the mutual coupling parameter of this N number of the unknown and then determine normalized receiving end coupled matrix estimated valueReceiving end coupled matrix estimated valueOr normalized receiving end coupled matrix estimated valueUAS device 203 can be transfused to.
In fact, the method for estimation of round-the-clock according to an embodiment of the invention receiving end coupled matrix, the antenna combination being not limited to the present invention is selected also to can be applicable to other many occasion, such as the correction of antenna direction or location etc.
In step 102, the signal y for channel estimating received by radio frequency link relative unit 200CEIt is transfused to channel estimating apparatus 202 and carries out efficient channel estimation. Now all antennas in antenna array can be carried out efficient channel estimation by channel estimating apparatus 202 simultaneously when receiving mode works, and method of estimation can be some common traditional methods. This efficient channel HeffIn fact be receiving end coupled matrix and the product of wireless channel, i.e. Heff=CrH. This efficient channel estimated value sameAlso UAS device 203 it is input for.
In step 103, UAS device 203 receives the efficient channel that receiving end coupled matrix is estimated and channel estimating apparatus the inputs estimation that RCME device 201 inputs, and estimates the wireless channel of corresponding all antennas based on both, then based on the channel estimatedFrom S set={ S0, S1... ST-1Middle selection non-coupled antenna combination Ss,Wherein f () needs maximized target functions, as to signal to noise ratio maximumization, or to maximize system capacity;It is non-coupled antenna combination S in corresponding S settChannel estimating. For convenience of calculation, normally to normalized radio channel estimation valueSolve,The non-coupled antenna combination S that UAS device 203 will be selectedsFor controlling, it selects wireless antenna to input radio frequency link relative unit 200, and receives/send out data processing equipment 204 by radio channel estimation value (comprising normalization method radio channel estimation value) input.
In step 104, receive/send out data processing equipment 204 according to radio channel estimation value select non-coupled antenna combination in antenna on receive and dispatch data. Such as, by input signal SiCarry out processing and obtain signal x and it is sent through radio frequency link relative unit 200 and the antenna selected, or the signal y that the antenna through selecting and radio frequency link relative unit 200 receive is carried out process obtain output signal So��
Fig. 5 is the schematic diagram processing sequence according to an embodiment of the invention. As shown in Figure 5, owing to receiving end coupled matrix is slowly change, twice receiving end coupled matrix estimates the timed interval T between RCMERCMEIt is longer than twice efficient channel and estimates the timed interval T between CE and non-coupled sky line options UASCE+UAS, say nothing of the timed interval of data transmit-receive; Therefore the training expense estimated for receiving end coupled matrix is little, on the impact of system throughput amount it is even possible that ignore.
Above-described embodiment is only the spiritual place that the present invention is described, it can not all be read as limitation of the invention. In other embodiments of the invention, in fact, receiving end channel estimation steps and its corresponding device can omit completely. Now, it is only necessary to many receiving antenna the same as launching radio frequency link. Estimate by making efficient channel for the respective channels of the antenna in each non-coupled antenna combination when receiving mode respectively, the channel estimating needed can be determined
Following present the exemplary application of one embodiment of the invention and emulation result thereof. Setting the evenly linear array (ULA, UniformLinearArray) being provided with a wavelength on an indoor small transmit receive unit, this even linear array has the 6 bipolar antenna of conllinear (co-lineardipoleantenna). It is spaced apart 0.2 wavelength between each antenna.And usually, when the distance between two bipolar antennas is greater than 1/3rd wavelength, namely can be considered both non-coupled. Accordingly, according to the present invention based on tree exhaustive search method can produce non-coupled antenna tree 60 as shown in Figure 6. Owing to not existing in any secondary nodes 602,603, figure when first step node 601 (i.e. the child node of root node 600) is 4,5, this two node is omitted. Based on this coupled antenna tree 60, each branch is upwards traced to the source by the node 602 or 603 of most final stage, S set={ S can be obtained through refining0, S1, S2, S3, S4, wherein S0={ 0,2,4}, S1={ 0,2,5}, S2={ 0,3,5}, S3={ 1,3,5}, S4={ 1,4}. The efficient channel h of the 6 �� 6 of these 6 bipolar antennas of conllinear estimated by transmit receive unit through RCME and CE stepeffIn normalization method receiving end coupled matrixWith 6 �� 1 row channel vectors, then the normalized value of the wireless channel in this bipolar antenna of root conllinear is:
This transmit receive unit taking system capacity as choose targets antenna,
Wherein �� is the received signal to noise ratio of each receiving antenna. This equation can be reduced to further:
Use Jake ring model to the indoor scattering environments modeling of this transmit receive unit: to assume that this transmit receive unit is positioned at Ring current distribution and has 20 to be uniformly distributed scattering; The radius of ring is 100 wavelength, and the distance between this transmit receive unit and another transmit receive unit communicated with is 200 wavelength. Fig. 7 gives the emulation result under above-mentioned condition, and the existing transmit receive unit of the one of comparison is the wavelength uniform circular array row having and comprising three bipolar antennas of conllinear; Wherein MA=3 and MA=6 represent the transmit receive unit using the existing transmit receive unit of 3 antennas with using 6 antennas according to an embodiment of the invention respectively. According to emulation result, when SNR is below 1dB, the system throughput amount roughly the same with prior art 3 antenna transceiving device that 6 antenna transceiving devices of the present invention are desirable; When SNR is 10dB, the present invention then has an appointment the system throughput amount gain of 10%. In other words, for the little transmit receive unit being configured with wavelength uniform circular array row, the present invention can how 3 antennas but the through-put power of few 1dB obtains identical performance; And for compact antenna array a little more greatly row, the present invention then can obtain more gain.
Technology contents and the technology feature of the present invention disclose as above, but those of ordinary skill in the art still may do all replacement and the modification that do not deviate from spirit of the present invention based on the teaching of the present invention and announcement. Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should comprise the various replacement and the modification that do not deviate from the present invention, and is contained by present patent application claim book.
Claims (15)
1. in antenna array, select a method for the antenna for receiving and dispatching data, comprise:
Produce the set of all non-coupled antenna combination in described antenna array; And
Non-coupled antenna combination S is selected in described sets,
Wherein f () needs maximized target function;It is non-coupled antenna combination S in corresponding described settChannel estimating.
2. the method for claim 1, in wherein said generation described antenna array the set of all non-coupled antenna combination be one based on tree exhaustive search method, its comprise produce non-coupled antenna tree and based on non-coupled antenna tree refinement non-coupled antenna combination.
3. method as claimed in claim 2, it is empty that wherein said generation non-coupled antenna tree comprises the root node setting described non-coupled antenna tree further, and other node is then the index of each antenna in described antenna array; Set each antenna in the corresponding described antenna array of each child node of described node; Then producing the child node of each child node of described node, the rest may be inferred produces child node not at the same level; The antenna of the upper one-level that the respective antenna of the child nodes at different levels of wherein said non-coupled antenna tree is corresponding with it is not coupled, and the big one-level thereon of the antenna index of described child node at different levels.
4. method as claimed in claim 2, wherein said refinement non-coupled antenna combination comprises the branch upwards checking the non-coupled antenna tree produced under certainly further, and recording the antenna index on each branch is a non-coupled antenna combination St, wherein t is the index of the branch of record;If the antenna index on brachyplast wooden fork is included in the non-coupled antenna combination of the long shoot wooden fork recorded, then no longer record the antenna index on this brachyplast wooden fork.
5. the method for claim 1, it comprises further and carries out receiving end coupled matrix estimation, and to the efficient channel estimation when receiving mode work simultaneously of all antennas in described antenna array; DescribedIt is estimate to estimate with described efficient channel based on described receiving end coupled matrix.
6. method as claimed in claim 5, wherein said carry out receiving end coupled matrix estimation and comprises further and turned into 2-d index from nature index thus produced the grouping of non-coupled antenna by the antenna in described antenna array; The channel estimating of respective antenna is carried out stage by stage based on described grouping; And estimate receiving end coupled matrix; The grouping of wherein said generation non-coupled antenna comprises further and the antenna in described antenna array is divided into L group, and each group comprises K root antenna; The described channel estimating based on carrying out respective antenna is included in L+1 stage further and makes channel estimating, works as l=1 ... during L, the antenna of l-1 group is only had to open the l stage; As l=L+1, the l stage, all antennas are all opened; Described receiving end coupled matrix is calculated by the channel estimation results in comprehensive L+1 stage.
7. the method for claim 1, its comprise further respectively the antenna in non-coupled antenna combination each in described set is done when receiving mode works corresponding channel estimating so that it is determined that described in
8. in antenna array, select a device for the antenna for receiving and dispatching data, comprise:
Set generation device, for generation of the set of non-coupled antenna combination all in described antenna array; And
Non-coupled antenna selection apparatus, selects non-coupled antenna combination S in described sets,
Wherein f () needs maximized target function;It is non-coupled antenna combination S in corresponding described settChannel estimating.
9. device as claimed in claim 8, wherein said set generation device uses the exhaustive search method based on tree to produce the set of all non-coupled antenna combination in described antenna array, and described method comprises generation non-coupled antenna tree and refines non-coupled antenna combination based on non-coupled antenna tree.
10. device as claimed in claim 9, the root node of wherein said non-coupled antenna tree is empty, and other node is then the index of each antenna in described antenna array; Each antenna in the corresponding described antenna array of each child node of described node; Then producing the child node of each child node of described node, the rest may be inferred produces child node not at the same level; The antenna of the upper one-level that the respective antenna of the child nodes at different levels of wherein said non-coupled antenna tree is corresponding with it is not coupled, and the big one-level thereon of the antenna index of described child node at different levels.
11. devices as claimed in claim 9, wherein said refinement non-coupled antenna combination comprises the branch upwards checking the non-coupled antenna tree produced under certainly further, and recording the antenna index on each branch is a non-coupled antenna combination St, wherein t is the index of the branch of record; If the antenna index on brachyplast wooden fork is included in the non-coupled antenna combination of the long shoot wooden fork recorded, then no longer record the antenna index on this brachyplast wooden fork.
12. devices as claimed in claim 8, it comprises the receiving end coupled matrix for the estimation of receiving end coupled matrix further and estimates device and the channel estimating apparatus for channel estimating;This channel estimating apparatus performs the simultaneously efficient channel estimation when receiving mode work of all antennas in described antenna array; DescribedIt is estimate to estimate with described efficient channel based on described receiving end coupled matrix.
13. devices as claimed in claim 12, wherein said receiving end coupled matrix estimates that the antenna in described antenna array is turned into 2-d index from nature index thus produced the grouping of non-coupled antenna by device; The channel estimating of respective antenna is carried out stage by stage based on described grouping; And estimate receiving end coupled matrix; The grouping of wherein said generation non-coupled antenna comprises further and the antenna in described antenna array is divided into L group, and each group comprises K root antenna; The described channel estimating based on carrying out respective antenna is included in L+1 stage further and makes channel estimating, works as l=1 ... during L, the antenna of l-1 group is only had to open the l stage; As l=L+1, the l stage, all antennas are all opened; Described receiving end coupled matrix is calculated by the channel estimation results in comprehensive L+1 stage.
14. devices as claimed in claim 8, it comprises the channel estimating apparatus for channel estimating further, respectively the antenna in non-coupled antenna combination each in described set is done when receiving mode works corresponding channel estimating so that it is determined that described in
15. 1 kinds carry out the method for receiving end coupled matrix estimation, comprise:
Antenna in antenna array is turned into 2-d index from nature index thus is produced the grouping of non-coupled antenna;
The channel estimating of respective antenna is carried out stage by stage based on described grouping; And
Estimate receiving end coupled matrix;
The grouping of wherein said generation non-coupled antenna comprises further and the antenna in described antenna array is divided into L group, and each group comprises K root antenna; The described channel estimating based on carrying out respective antenna is included in L+1 stage further and makes channel estimating, works as l=1 ... during L, the antenna of l-1 group is only had to open the l stage; As l=L+1, the l stage, all antennas are all opened; Described receiving end coupled matrix is calculated by the channel estimation results in comprehensive L+1 stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210090846.XA CN103368623B (en) | 2012-03-30 | 2012-03-30 | The system of selection of non-coupled antenna combination and device in antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210090846.XA CN103368623B (en) | 2012-03-30 | 2012-03-30 | The system of selection of non-coupled antenna combination and device in antenna array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103368623A CN103368623A (en) | 2013-10-23 |
| CN103368623B true CN103368623B (en) | 2016-06-08 |
Family
ID=49369258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210090846.XA Active CN103368623B (en) | 2012-03-30 | 2012-03-30 | The system of selection of non-coupled antenna combination and device in antenna array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103368623B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109417407B (en) * | 2016-07-15 | 2022-01-18 | 梁平 | MIMO coupler array with high degree of freedom |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101479889A (en) * | 2006-06-30 | 2009-07-08 | 艾利森电话股份有限公司 | A re-configurable antenna and a method for acquiring a configuration of a re-configurable antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8351849B2 (en) * | 2010-08-23 | 2013-01-08 | Sony Ericsson Mobile Communications Ab | Multi-standard wireless terminals including smart antenna systems for multiple input multiple output communications |
-
2012
- 2012-03-30 CN CN201210090846.XA patent/CN103368623B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101479889A (en) * | 2006-06-30 | 2009-07-08 | 艾利森电话股份有限公司 | A re-configurable antenna and a method for acquiring a configuration of a re-configurable antenna |
Non-Patent Citations (2)
| Title |
|---|
| BlumReceive Antenna Selection for Closely-Spaced Antennas with Mutual Coupling;Zhemin Xu, Sana Sfar, and Rick S;《IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS》;20100205;第9卷(第2期);摘要、第653页第1栏第2段至第656页第1栏第4段 * |
| Receive Antenna Selection Scheme for V-BLAST with Mutual Coupling in Correlated Channels;Di Lu, Daniel K. C. So, Anthony K. Brown;《Persoonal,Indoor and Mobile Radio Communications,2008, PIMRC 2008.IEEE 19th International Symposium on Year:2008》;20080918;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103368623A (en) | 2013-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106464415B (en) | Multiple-input and multiple-output training method and wireless device | |
| CN103516407B (en) | Transmission mode selection method, antenna transmitting and receiving combination determination method, apparatus and system thereof | |
| JP5438829B2 (en) | Precoding method, channel information feedback method, transmitter, receiver, and precoding codebook structure method | |
| CN101675602B (en) | Method and arrangement for adapting a multi-antenna transmission | |
| CN102340784B (en) | Method and device for enhancing correction of reciprocal error of uplink and downlink by selecting user terminal | |
| CN102195698A (en) | Downlink transmission in a multiple-user multiple-input multiple-output MU-MIMO wireless communication system | |
| CN105471484A (en) | Wireless communication device and wireless communication method | |
| CN101183890B (en) | Code book based CQI feedback method for multi-user precoding system | |
| TW201126941A (en) | Method and apparatus for transmitting control information for interference mitigation in multiple antenna system | |
| JP2013502111A5 (en) | ||
| CN105611633A (en) | Receiver resource distribution method based on SWIPT wave beam forming method | |
| RU2008137581A (en) | FEEDBACK CHANNEL STRUCTURE FOR COMMUNICATION SYSTEMS WITH MULTIPLE INPUTS AND MANY OUTPUTS | |
| CN103684700A (en) | 3D (three-dimensional) MU-MIMO (multiple user-multiple input multiple output) precoding method based on orthogonal joint codebook set | |
| CN103905345B (en) | channel correcting device, method and system | |
| CN104065448A (en) | Method, system and equipment for determining pre-coding matrixes | |
| CN102577139B (en) | Interference cancellation method and data transmission device | |
| CN105637773A (en) | Transmit antenna selection | |
| CN107210803A (en) | The system and method communicated for extensive MIMO | |
| CN101983490A (en) | Method and apparatus in relaying system | |
| CN104243106A (en) | Codebook construction method based of 3D (three dimensional) cross polarization channel based massive multiple input multiple output (MIMO) system | |
| CN104836647A (en) | Channel state information measuring method and device | |
| CN104717035B (en) | A kind of interference alignment schemes of the cellular network based on D2D communication | |
| CN102291810B (en) | Open loop power control method and device | |
| CN101917218A (en) | MIMO multi-user system downlink transmission method and system for reducing feedback information | |
| US8320438B2 (en) | Evaluation device for providing a transceiver system with performance information thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: No. 388, Ning Ning Road, Shanghai, Pudong New Area Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |