CN101257335B - Method and apparatus for form-giving array antennas beams - Google Patents
Method and apparatus for form-giving array antennas beams Download PDFInfo
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- CN101257335B CN101257335B CN2007101115604A CN200710111560A CN101257335B CN 101257335 B CN101257335 B CN 101257335B CN 2007101115604 A CN2007101115604 A CN 2007101115604A CN 200710111560 A CN200710111560 A CN 200710111560A CN 101257335 B CN101257335 B CN 101257335B
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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
Abstract
The invention provides a wave beam recontour method and apparatus for array antenna. The method comprises the following steps: step S102,determining the constraint condition of the main wave beam; step S104,determining the constraint condition of each of the array antenna power; step S106,determining the module value of the recontour weight of each array antenna based on the constraint condition of each array antennas;step S108,searching the argument of the recontour weight which satisfies the constraint condition of the main wave beam according to the module value; and step S110,performing the recontour according to the recontour weight to obtain the wave beam satisfying the constraint conditions of the main wave beam and the each of the array antennas powers. Therefore, the invention can obtain the recontour beam according to the needs, satisfy specific main wave beam request by the low side lobe wave beam recontour, and reduce the interfere between users and the emission power of the array antenna.
Description
Technical field
The present invention relates to the implementation of the low secondary lobe wave beam forming of array antenna, more specifically, relate to the form-giving array antennas beams method and apparatus in a kind of wireless communication system.
Background technology
Array antenna is one and utilizes the space parallax opposite sex of different user signal transmission and the technology of array Digital Signal Processing; It can realize to the different target signal from the spatial domain angle distinguish and isolate, reduce multiple access interferences, increase capacity, enlarge the purpose that covers, improves communication quality, reduces transmitting power and raising wireless data transmission rate thereby reach.
In practical application, reduce in the communication system that phase mutual interference (multiple access interferences) is the important channel of improving communication quality between each user, using the wave beam forming with low secondary lobe then is the important means that reduces the multiple access interference.Array antenna figuration commonly used at present adopts the method for moulds such as each antenna shape-endowing weight value to realize wave beam forming; Though realize comparatively simple because the restriction of the weights degree of freedom, cause its when realizing the wave beam of some particular requirement (for example; Width and sensing to main beam have particular requirement); The common secondary lobe of wave beam by waiting mould shape-endowing weight value to obtain is higher, can cause the interference to other users or other sub-districts in the system to strengthen like this, will reduce the whole volume of system like this.Adopt this moment the non-mould shape-endowing weight value that waits just can solve the problem that when satisfying specific main beam requirement, has lower secondary lobe preferably.Because the non-degree of freedom of mould shape-endowing weight value that waits is big many with respect to waiting mould shape-endowing weight value, so its wave beam forming better effects if.Yet, so also cause to produce the suitable non-required amount of calculation of mould shape-endowing weight value that waits and increase greatly, also have in addition in the middle of the practical applications factors such as each array antenna array element power difference restrictions, all make the non-mould shape-endowing weight value that waits be difficult for acquisition with low secondary lobe.
In order to address the above problem, to be badly in need of a kind of scheme and to realize that array antenna hangs down the secondary lobe wave beam forming.
Summary of the invention
Deficiency to prior art; The present invention proposes a kind of form-giving array antennas beams method and apparatus; It can satisfy specific main beam requirement and array element power constraint condition, and has low secondary lobe, adjusts respectively through mould value and argument to beam shape-endowing weight value; The non-mould shape-endowing weight value that waits that can obtain being suitable for lower amount of calculation, thus realize comparatively desirable wave beam forming.
One aspect of the present invention provides a kind of form-giving array antennas beams method, and it may further comprise the steps: step S102, confirm the constraints of main beam; Step S104 confirms the constraints of each array antenna array element power; Step S106 according to the constraints of each array antenna array element power, confirms the mould value of the shape-endowing weight value that each array antenna array element is required; Step S108 according to the mould value, searches for the argument of the shape-endowing weight value of the constraints that satisfies main beam; And step S110, carry out figuration according to resulting shape-endowing weight value, with the wave beam of the constraints of the constraints that is met main beam and each array antenna array element power.
According to an aspect of the present invention, the constraints of main beam can comprise one of following or combination: beamwidth and beam position.The constraints of each array antenna array element power can comprise: the power difference between each array element.
In addition, in step S106, do not consider the argument of shape-endowing weight value.
According to embodiments of the invention, the constraints of each array antenna array element power is no more than 1 for the mould value of restriction shape-endowing weight value.
Another aspect of the present invention provides a kind of form-giving array antennas beams device, and it can comprise: confirm the unit, be used for confirming the constraints of main beam, and the constraints of each array antenna array element power; Computing unit is used for the constraints according to each array antenna array element power, confirms the mould value of the shape-endowing weight value that each array antenna array element is required; Search unit is used for according to the mould value, searches for the argument of the shape-endowing weight value of the constraints that satisfies main beam; And the figuration unit, be used for carrying out figuration, with the wave beam of the constraints of the constraints that is met main beam and each array antenna array element power according to resulting shape-endowing weight value.
Wherein, the constraints of main beam can comprise one of following or combination: beamwidth and beam position.The constraints of each array antenna array element power can comprise: the power difference between each array element.
According to another aspect of the present invention, in computing unit, do not consider the argument of shape-endowing weight value.
According to embodiments of the invention, the constraints of each array antenna array element power is no more than 1 for the mould value of restriction shape-endowing weight value.
Adopt the beam form-endowing method and the device of the low secondary lobe of array antenna of the present invention,, thereby obtain satisfactory shaped-beam promptly through coming to confirm respectively the mould value and the argument of mould shape-endowing weight value such as non-according to array element power constraint condition and main beam constraints.The present invention satisfies specific main beam requirement through realizing low secondary lobe wave beam forming, can reduce the interference between the user simultaneously, reduces the array antenna transmitting power, and the present invention's advantages such as to have the scope of application extensive, and Project Realization is simple.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to form-giving array antennas beams method of the present invention;
Fig. 2 is the block diagram according to form-giving array antennas beams device of the present invention;
Fig. 3 is the flow chart according to the low secondary lobe beam form-endowing method of array antenna of the embodiment of the invention;
Fig. 4 is the structural representation of 8 related antenna linear arrays of the embodiment of the invention;
Fig. 5 is the directional diagram of the relative power of single antenna in the 8 related antenna linear arrays of the embodiment of the invention; And
Fig. 6 is the comparison diagram of the corresponding beam direction of mould shape-endowing weight value such as 8 antenna linear arrays of the embodiment of the invention and the mould shape-endowing weight value such as non-that generates through the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Fig. 1 is the flow chart according to form-giving array antennas beams method of the present invention, and is as shown in Figure 1, and this method may further comprise the steps:
Step S102 confirms the constraints of main beam;
Step S104 confirms the constraints of each array antenna array element power;
Step S106 according to the constraints of each array antenna array element power, confirms the mould value of the shape-endowing weight value that each array antenna array element is required;
Step S108 according to the mould value, searches for the argument of the shape-endowing weight value of the constraints that satisfies main beam; And
Step S110 carries out figuration according to resulting shape-endowing weight value, with the wave beam of the constraints of the constraints that is met main beam and each array antenna array element power.
Wherein, the constraints of main beam comprises one of following or combination: beamwidth and beam position.The constraints of each array antenna array element power comprises: the power difference between each array element.
In addition, in step S106, do not consider the argument of shape-endowing weight value.The constraints of each array antenna array element power is no more than 1 for the mould value of restriction shape-endowing weight value.
Fig. 2 is the block diagram according to form-giving array antennas beams device 200 of the present invention; As shown in Figure 2; This form-giving array antennas beams device 200 comprises: confirms unit 202, is used for confirming the constraints of main beam, and the constraints of each array antenna array element power; Computing unit 204 is used for the constraints according to each array antenna array element power, confirms the mould value of the shape-endowing weight value that each array antenna array element is required; Search unit 206 is used for according to the mould value, searches for the argument of the shape-endowing weight value of the constraints that satisfies main beam; And figuration unit 208, be used for carrying out figuration, with the wave beam of the constraints of the constraints that is met main beam and each array antenna array element power according to resulting shape-endowing weight value.
Wherein, the constraints of main beam can comprise one of following or combination: beamwidth and beam position.The constraints of each array antenna array element power can comprise: the power difference between each array element.
In computing unit, do not consider the argument of shape-endowing weight value.The constraints of each array antenna array element power is no more than 1 for the mould value of restriction shape-endowing weight value.
Fig. 3 is the flow chart according to the low secondary lobe beam form-endowing method of array antenna of the embodiment of the invention; Fig. 4 is the structural representation of 8 related antenna linear arrays of the embodiment of the invention; Fig. 5 is the directional diagram of the relative power of single antenna in the 8 related antenna linear arrays of the embodiment of the invention, and Fig. 6 is the comparison diagram of the corresponding beam direction of mould shape-endowing weight value such as 8 antenna linear arrays of the embodiment of the invention and the mould shape-endowing weight value such as non-that generates through the present invention.Below will combine Fig. 4 to Fig. 6 to describe the detailed process of the low secondary lobe beam form-endowing method of array antenna of Fig. 3 in detail.
With reference to figure 3, the low secondary lobe beam form-endowing method of the array antenna of the embodiment of the invention may further comprise the steps:
Step S302 confirms the constraints of main beam, and like beamwidth, beam position etc., the array antenna in the present embodiment adopts 8 antenna equidistant line battle arrays as shown in Figure 4, and array element distance is λ/2 (wherein λ is a carrier wavelength).The directional diagram of each array element is as shown in Figure 5, and the normal direction of each array element directional diagram is consistent with the normal direction of aerial array, in addition, to the constraints of main beam be main beam-the 3dB width is 65 degree, main beam pointing is 0 degree direction (normal direction);
Step S304 confirms to be without loss of generality the constraints of each array antenna array element power, and the mould value of restriction shape-endowing weight value is no more than 1 in this example, that is, and and max|W
i|≤1, i=1 ..., 8, wherein, W
iBe the complex coefficient of shape-endowing weight value corresponding to i antenna, and | W
i| modular arithmetic is asked in expression, and limit the maximum power of single array element and the difference of minimum power simultaneously and be no more than 5dB, that is, and 20*log (max|W
i|/min|W
j|)≤5, i, j=1 ..., 8;
Step S306 confirms the mould value of the low secondary lobe shape-endowing weight value that each array element is required according to the constraints of above-mentioned steps S304, wherein, can earlier the weights argument all be made as 0 degree, and the maximum of setting shape-endowing weight value simultaneously is 1, that is, and and max|W
i|=1, (i=1 ..., 8), and the minimum value of shape-endowing weight value is min|W
i|=10
-5/20≈ 0.56, (i=1 ..., 8), in the present embodiment, will satisfy under this mould value constraints, according to the minimum figuration power of Chebyshev polynomials design secondary lobe
[|W
1W
2W
3W
4W
5W
6W
7W
8|]
The mould value of value obtains=[0560.650.87110.870.650.56];
Step S308; According to the mould value that obtains from step S306; The fixing mould value of figuration power; Further search can be satisfied the weights argument combination of main beam constraints among the step S302, and the argument that obtains the optimum beam shape-endowing weight value of the mode through traversal search is respectively [0 °-104.3 °-117.2 ° 161.6 ° 161.6 °-117.2 °-104.3 ° 0 °] in the present embodiment;
Step S310; The beam shape-endowing weight value that utilizes step S308 to obtain carries out figuration; Can be met the low secondary lobe wave beam of step S302 and step S304 constraints, the beam pattern contrast that the low secondary lobe wave beam that obtains through the present invention is corresponding with waiting mould shape-endowing weight value is as shown in Figure 6.
Can find out that under the situation that main beam all meets the demands, the pairing wave beam of the present invention has lower secondary lobe, the figuration better effects if.
Though the present invention is the specific embodiment that example has provided the low secondary lobe wave beam forming of a kind of array antenna with 8 antenna linear arrays, content of the present invention is not limited to linear array, equally also is applicable to situation such as other antenna number and array manifold.
In sum; The present invention has provided the beam form-endowing method and the device of the low secondary lobe of a kind of array antenna; It is through coming to confirm respectively the mould value and the argument of mould shape-endowing weight value such as non-according to array element power constraint condition and main beam constraints, thereby obtains satisfactory shaped-beam.The present invention satisfies specific main beam requirement through realizing low secondary lobe wave beam forming, can reduce the interference between the user simultaneously; Reduce the array antenna transmitting power; Advantages such as the while has significantly been reduced the non-amount of calculation that waits the search of mould weights, and it is extensive to have the scope of application, and Project Realization is simple.
The present invention is applicable to wireless communication system, is particularly useful for adopting array antenna to carry out the wireless communication system of wave beam forming.Any technical staff with knowledge background such as signal processing, communications, the form-giving array antennas beams implementation method that is equal to of design according to the present invention, it all should be included in thought of the present invention and the scope.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a form-giving array antennas beams method is characterized in that, may further comprise the steps:
Step S102 confirms the constraints of main beam;
Step S104 confirms the constraints of each array antenna array element power;
Step S106 according to the constraints of said each array antenna array element power, confirms the mould value of the shape-endowing weight value that each said array antenna array element is required;
Step S108, according to said mould value, traversal search satisfies the argument of said shape-endowing weight value of the constraints of said main beam; And
Step S110 carries out figuration according to resulting said shape-endowing weight value, with the wave beam of the constraints of the constraints that is met said main beam and said each array antenna array element power.
2. method according to claim 1 is characterized in that, the constraints of said main beam comprises one of following or combination: beamwidth and beam position.
3. method according to claim 1 is characterized in that, the constraints of said each array antenna array element power comprises: the power difference between each array element.
4. according to each described method in the claim 1 to 3, it is characterized in that, in said step S106, do not consider the argument of said shape-endowing weight value.
5. according to each described method in the claim 1 to 3, it is characterized in that the constraints of said each array antenna array element power is no more than 1 for the mould value of restriction shape-endowing weight value.
6. a form-giving array antennas beams device is characterized in that, comprising:
Confirm the unit, be used for confirming the constraints of main beam, and the constraints of each array antenna array element power;
Computing unit is used for the constraints according to said each array antenna array element power, confirms the mould value of the shape-endowing weight value that each said array antenna array element is required;
Search unit is used for according to said mould value, and traversal search satisfies the argument of said shape-endowing weight value of the constraints of said main beam; And
The figuration unit is used for carrying out figuration according to resulting said shape-endowing weight value, with the wave beam of the constraints of the constraints that is met said main beam and said each array antenna array element power.
7. form-giving array antennas beams device according to claim 6 is characterized in that, the constraints of said main beam comprises one of following or combination: beamwidth and beam position.
8. form-giving array antennas beams device according to claim 6 is characterized in that, the constraints of said each array antenna array element power comprises: the power difference between each array element.
9. according to each described form-giving array antennas beams device in the claim 6 to 8, it is characterized in that, in said computing unit, do not consider the argument of said shape-endowing weight value.
10. according to each described form-giving array antennas beams device in the claim 6 to 8, it is characterized in that the constraints of said each array antenna array element power is no more than 1 for the mould value of restriction shape-endowing weight value.
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| CN2007101115604A CN101257335B (en) | 2007-03-02 | 2007-06-19 | Method and apparatus for form-giving array antennas beams |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103634034B (en) * | 2012-08-23 | 2019-01-08 | 上海中兴软件有限责任公司 | beam forming processing method and device |
| CN103037494B (en) * | 2012-12-28 | 2015-07-15 | 中国电子科技集团公司第五十四研究所 | Control method for multi-beam antenna power |
| WO2014205751A1 (en) | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Multi-mode base station control method and base station |
| WO2016106620A1 (en) * | 2014-12-31 | 2016-07-07 | 华为技术有限公司 | Antenna alignment method and system |
| WO2016141514A1 (en) * | 2015-03-06 | 2016-09-15 | He Xiaoxi | Beamforming method and beamforming apparatus |
| CN107276644B (en) * | 2017-06-02 | 2021-02-26 | 歌尔股份有限公司 | Array antenna beam forming method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1379558A (en) * | 2001-04-11 | 2002-11-13 | 白桦 | Base station equipment with adaptive array and its transmitting and receiving method |
| CN1423436A (en) * | 2001-11-22 | 2003-06-11 | 深圳市中兴通讯股份有限公司上海第二研究所 | Outer loop power control method in CDMA system |
| CN1452336A (en) * | 2001-12-19 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Full-adaptive-weigh module intelligent antenna receiving method and device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379558A (en) * | 2001-04-11 | 2002-11-13 | 白桦 | Base station equipment with adaptive array and its transmitting and receiving method |
| CN1423436A (en) * | 2001-11-22 | 2003-06-11 | 深圳市中兴通讯股份有限公司上海第二研究所 | Outer loop power control method in CDMA system |
| CN1452336A (en) * | 2001-12-19 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Full-adaptive-weigh module intelligent antenna receiving method and device |
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