JPH1075112A - Adaptive antenna device - Google Patents
Adaptive antenna deviceInfo
- Publication number
- JPH1075112A JPH1075112A JP8245486A JP24548696A JPH1075112A JP H1075112 A JPH1075112 A JP H1075112A JP 8245486 A JP8245486 A JP 8245486A JP 24548696 A JP24548696 A JP 24548696A JP H1075112 A JPH1075112 A JP H1075112A
- Authority
- JP
- Japan
- Prior art keywords
- weighting means
- weight
- element antennas
- output
- adaptive antenna
- 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.)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radio Transmission System (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は無線通信システム用
アンテナの指向性制御と波形等化に関する。The present invention relates to directivity control and waveform equalization of an antenna for a wireless communication system.
【０００２】[0002]
【従来の技術】図２に従来のＮ行Ｍ列の素子アンテナが
配置されたアレーアンテナを用いた適応アンテナ装置を
示す。2. Description of the Related Art FIG. 2 shows a conventional adaptive antenna apparatus using an array antenna in which element antennas of N rows and M columns are arranged.
【０００３】複数のＮ行Ｍ列の素子アンテナ２１１１〜
２１ＮＭ、該素子アンテナの出力に複素重みを課す重み
付け手段２２１１〜２２ＮＭ、該重み付け手段２２１１
〜２２ＮＭの重みを制御する重み制御装置２３、基準信
号発生装置２４、前記複数の素子アンテナ２１１１〜２
１ＮＭの出力に複素重み付けをされた信号を合成するた
めの合成器２５から構成される適応アンテナ装置であ
る。[0003] A plurality of element antennas 2111 of N rows and M columns
21NM, weighting means 2211-22NM for imposing a complex weight on the output of the element antenna, and weighting means 2211
Weight control device 23 for controlling the weight of .about.22NM, reference signal generation device 24, and the plurality of element antennas 2111-1-2
This is an adaptive antenna device including a combiner 25 for combining a complex-weighted signal with an output of 1NM.
【０００４】図３に従来のＮ行Ｍ列の素子アンテナが配
置されたアレーアンテナを用い、制御を簡略化した適応
アンテナ装置を示す。（田中、三浦、唐沢、“ＢＳＣＭ
Ａアダプティブアレーの干渉波抑圧実験”、電子情報通
信学会技術研究報告、１９９６年２月２６日 Ｖｏｌ．
９５ Ｎｏ．５３５ ＰＰ．４９−５４）FIG. 3 shows an adaptive antenna device in which control is simplified by using a conventional array antenna in which N rows and M columns of element antennas are arranged. (Tanaka, Miura, Karasawa, "BSCM
A Adaptive Array Array Interference Wave Suppression Experiment ", IEICE Technical Report, February 26, 1996, Vol.
95 No. 535 PP. 49-54)
【０００５】複数の素子アンテナ３１１１〜３１ＮＭ、
各素子アンテナに接続されたＡ／Ｄコンバータ３２１１
〜３２ＮＭ、各Ａ／Ｄコンバータ３２１１〜３２ＮＭの
出力からＦＦＴ演算により複数のビームを形成するＦＦ
Ｔマルチビーム形成手段３３、形成されたビームのうち
重み付けを行うビームを選択するビーム選択手段３４、
選択されたビームを制御する適応ビーム制御手段３５か
ら構成される適応アンテナ装置において、ビーム選択手
段３４において、設定した閾値をこえたビームを選択す
ることにより、制御を簡略化した適応アンテナ装置であ
る。[0005] A plurality of element antennas 3111 to 31NM,
A / D converter 3211 connected to each element antenna
To form a plurality of beams by an FFT operation from the outputs of the A / D converters 3211 to 32NM.
T multi-beam forming means 33, beam selecting means 34 for selecting a beam to be weighted from the formed beams,
In the adaptive antenna device including the adaptive beam control unit 35 for controlling the selected beam, the beam selection unit 34 selects a beam exceeding a set threshold, thereby simplifying the control. .
【０００６】[0006]
【発明が解決しようとする課題】従来の適応アンテナ装
置では、Ｎ行Ｍ列の素子アンテナが配置されたアレーア
ンテナで構成すると、制御する重み付け手段の数がＮ×
Ｍ個となり、制御が複雑になるという欠点があった。In the conventional adaptive antenna device, when the antenna device is configured by an array antenna in which N rows and M columns of element antennas are arranged, the number of weighting means to be controlled is N ×
There is a disadvantage that the number becomes M and the control becomes complicated.
【０００７】また従来の簡略化では、例えば屋内伝搬環
境ではレベルの高い遅延波、或いは干渉波が様々な角度
から到来するため、十分な伝送品質が得られないという
欠点があった。Further, the conventional simplification has a drawback that sufficient transmission quality cannot be obtained because, for example, in an indoor propagation environment, a high-level delayed wave or interference wave arrives from various angles.
【０００８】本発明は制御が単純で、かつ、十分な伝送
品質を与える適応アンテナ装置を提供することを目的と
する。SUMMARY OF THE INVENTION It is an object of the present invention to provide an adaptive antenna device which is simple in control and provides sufficient transmission quality.
【０００９】[0009]
【課題を解決するための手段】屋内伝搬環境での水平方
向の到来波分布は、高さを変えてもほとんど変化しな
い。そこで、Ｎ行Ｍ列の素子アンテナが配置されたアレ
ーアンテナを用いた適応アンテナ装置において、同一列
上に配置された上記Ｎ個の素子アンテナに接続された上
記第一の重み付け手段の重みの値を共通として重み制御
を簡略化した適応アンテナ装置を用いる。The incoming wave distribution in the horizontal direction in an indoor propagation environment hardly changes even if the height is changed. Therefore, in an adaptive antenna device using an array antenna in which element antennas of N rows and M columns are arranged, the weight value of the first weighting means connected to the N element antennas arranged on the same column And an adaptive antenna apparatus with simplified weight control.
【００１０】[0010]
【発明の実施の形態】以下、図面を参照して本発明の実
施形態について説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は、第一の実施形態を示す図であり、
同一列上に配置された上記Ｎ個の素子アンテナに接続さ
れた上記第一の重み付け手段の重みの値を共通とする構
成である。FIG. 1 is a diagram showing a first embodiment,
In this configuration, the weights of the first weighting means connected to the N element antennas arranged on the same column have a common value.
【００１２】符号１１１１〜１１ＮＭは、素子アンテナ
であり、例えば平面アレーアンテナ、或いは円柱アレー
アンテナ等により構成される。Reference numerals 1111 to 11NM denote element antennas, which are composed of, for example, a planar array antenna or a cylindrical array antenna.
【００１３】符号１２１１〜１２ＮＭは素子アンテナ１
１１１〜１１ＮＭの出力に複素重みを課す第一の重み付
け手段であり、例えばアンプと位相器の組み合わせ、或
いは各素子アンテナの受信波形をＡ／Ｄ変換した後ディ
ジタル信号処理により演算すること等で実現される。Reference numerals 1211 to 12NM denote element antennas 1
This is a first weighting means for imposing complex weights on the outputs of 111 to 11NM, and is realized by, for example, a combination of an amplifier and a phase shifter, or A / D conversion of a reception waveform of each element antenna and then performing an arithmetic operation by digital signal processing. Is done.
【００１４】符号１３１〜１３Ｎは同一行Ｍ個の第一の
重み付け手段１２１１〜１２ＮＭの出力を合成する第一
の合成器であり、アナログ或いはディジタル信号処理に
より実現される。Reference numerals 131 to 13N denote first synthesizers for synthesizing the outputs of the M first weighting means 1211 to 12NM in the same row, and are realized by analog or digital signal processing.
【００１５】符号１４１〜１４Ｎは第一の合成器１３１
〜１３Ｎの出力に複素重みを課す第二の重み付け手段で
あり、例えばアンプと位相器の組み合わせ、或は位相器
のみ、或いは各素子アンテナの受信波形をＡ／Ｄ変換し
た後ディジタル信号処理により演算すること等で実現さ
れる。Reference numerals 141 to 14N denote first combiners 131.
A second weighting means for imposing complex weights on the outputs of .about.13N. For example, a combination of an amplifier and a phase shifter, or only a phase shifter, or an A / D conversion of a received waveform of each element antenna, and then an arithmetic operation by digital signal processing And so on.
【００１６】符号１５はＮ個の第二の重み付け手段１４
１〜１４Ｎの出力を合成し、適応アンテナ装置の出力と
する第二の合成器であり、アナログ或いはディジタル信
号処理により実現される。Reference numeral 15 denotes N second weighting means 14
This is a second combiner that combines outputs of 1 to 14N and outputs the result of the adaptive antenna device, and is realized by analog or digital signal processing.
【００１７】符号１６は基準信号発生装置であり既知の
トレーニング信号或いは、復調後の信号から基準信号を
生成する。A reference signal generator 16 generates a reference signal from a known training signal or a demodulated signal.
【００１８】符号１７は、素子アンテナ１１１１〜１１
ＮＭの出力、基準信号発生装置１６の出力から、第一の
重み付け手段１２１１〜１２ＮＭ及び第二の重み付け手
段１４１〜１４Ｎの重みの値を決定する重み制御装置で
ある。ここで、第一の重み付け手段のうち、同一列上に
ある重み付け手段の重みの値は等しくする。Reference numeral 17 denotes element antennas 1111 to 11
This is a weight control device that determines the weight values of the first weighting means 1211 to 12NM and the second weighting means 141 to 14N from the output of the NM and the output of the reference signal generating device 16. Here, among the first weighting means, the weight values of the weighting means on the same column are made equal.
【００１９】重み制御装置１７では、例えば、まず基準
信号と、最大の受信レベルの素子アンテナを含む行の素
子アンテナの出力Ｍ個、或いは同一列に並んだＮ個の素
子アンテナの出力の平均をとったものＭ個を用いてＭ個
の第一の重み付け手段１２１１〜１２ＮＭの重みの値を
算出し、その後にＮ個の第二の重み付け手段１４１〜１
４Ｎの重みの値を算出する。In the weight control device 17, for example, first, the average of the output of the reference signal and the M outputs of the element antennas in the row including the element antenna of the highest reception level or the outputs of the N element antennas arranged in the same column is calculated. The weights of the M pieces of first weighting means 1211 to 12NM are calculated using the M pieces taken, and then the N pieces of second weighting means 141 to 1
The value of the 4N weight is calculated.
【００２０】この際には、第一及び第二の重みの値は各
々独立して、例えばＬＭＳ（Ｌｅａｓｔ Ｍｅａｎ Ｓ
ｑｕａｒｅ）アルゴリズム、ＣＭＡ（Ｃｏｎｓｔａｎｔ
Ｍｏｄｕｌｕｓ Ａｌｇｏｒｉｔｈｍ）、ＲＬＳ（Ｒ
ｅｃｕｒｓｉｖｅ Ｌｅａｓｔ Ｓｑｕａｒｅｓ）アル
ゴリズム、ＳＭＩ（Ｓａｍｐｌｅ Ｍａｔｒｉｘ Ｉｎ
ｖｅｒｓｉｏｎ）アルゴリズム、方向拘束型アルゴリズ
ム等により各重みの値は算出される。In this case, the values of the first and second weights are each independently, for example, LMS (Least Mean S
quare) algorithm, CMA (Constant)
Modulus Algorithm), RLS (R
ecursive Least Squares algorithm, SMI (Sample Matrix In)
The value of each weight is calculated by a version algorithm, a direction constraint algorithm, or the like.
【００２１】或いは、まず基準信号と適応アンテナ装置
の出力との差から誤差信号を求め、誤差信号が最小にな
るように、第一の重み付け手段１２１１〜１２ＮＭ及び
第二の重み付け手段１４１〜１４Ｎの重みの値を例えば
ＬＭＳアルゴリズム、ＣＭＡアルゴリズム等を用い、最
急降下法等により更新する。Alternatively, first, an error signal is obtained from the difference between the reference signal and the output of the adaptive antenna apparatus. The weight value is updated by the steepest descent method using the LMS algorithm, the CMA algorithm, or the like.
【００２２】このように適応アンテナ装置を構成し制御
することにより、レベルの高い遅延波、或いは干渉波が
様々な角度から到来する環境においても良好な通信品質
を保ちながら、重みの値を算出する演算量を削減するこ
とが可能となる。By configuring and controlling the adaptive antenna apparatus as described above, the weight value is calculated while maintaining good communication quality even in an environment where a high-level delayed wave or an interference wave arrives from various angles. The amount of calculation can be reduced.
【００２３】[0023]
【発明の効果】本発明の適応アンテナ装置では、同一列
上に配置されたＮ個の素子アンテナに接続された第一の
重み付け手段の重みの値を共通とすることにより、重み
制御装置で演算を行う重みの値はＮ＋Ｍ個に削減され
る。このため、重みの値を算出する演算量を削減するこ
とが可能となる。According to the adaptive antenna apparatus of the present invention, the weight control apparatus performs calculation by using the same weight value of the first weighting means connected to the N element antennas arranged on the same column. Is reduced to N + M. Therefore, it is possible to reduce the amount of calculation for calculating the weight value.
【００２４】本発明において、希望波の方向にビームの
指向方向を向け、遅延波の方向にヌルを向けることで、
遅延波の影響を抑えることができる。In the present invention, by directing the beam direction in the direction of the desired wave and nulling in the direction of the delayed wave,
The effect of the delayed wave can be suppressed.
【図１】本発明の第一の実施形態を示す図である。FIG. 1 is a diagram showing a first embodiment of the present invention.
【図２】従来の適応アンテナ装置の一例を示す図であ
る。FIG. 2 is a diagram illustrating an example of a conventional adaptive antenna device.
【図３】従来の制御対象を削減する適応アンテナ装置の
一例を示す図である。FIG. 3 is a diagram showing an example of a conventional adaptive antenna device for reducing the number of control targets.
１１１１〜１１ＮＭ 素子アンテナ １２１１〜１２ＮＭ 第一の重み付け手段 １３１〜１３Ｎ 第一の合成器 １４１〜１４Ｎ 第二の重み付け手段 １５ 第二の合成器 １６ 基準信号発生装置 １７ 重み制御装置 ２１１１〜２１ＮＭ 素子アンテナ ２２１１〜２２ＮＭ 重み付け手段 ２３ 重み制御装置 ２４ 基準信号発生装置 ２５ 合成器 ３１１１〜３１ＮＭ 素子アンテナ ３２１１〜３２ＮＭ Ａ／Ｄコンバータ ３３ ＦＦＴマルチビーム形成手段 ３４ ビーム選択手段 ３５ 適応ビーム制御手段 1111-11NM Element antenna 1211-12NM First weighting means 131-13N First combiner 141-14N Second weighting means 15 Second combiner 16 Reference signal generator 17 Weight controller 2111-21NM Element antenna 2211 .About.22NM weighting means 23 weight control apparatus 24 reference signal generating apparatus 25 combiner 3111-31NM element antenna 3211-32NM A / D converter 33 FFT multi-beam forming means 34 beam selecting means 35 adaptive beam controlling means
Claims (2)
ーアンテナと、 前記素子アンテナの各出力に複素重みを課す重み付け手
段と、 前記重み付け手段の重みを制御する重み制御装置と、 重み付けをされた全信号を合成する合成器と、 基準信号を発生する基準信号発生装置からなる適応アン
テナ装置において、 同一行に配置されたＭ個の素子アンテナの各出力に重み
付けをした信号を合成する第一の合成器と、 前記第一の合成器の出力に複素重みを課す第二の重み付
け手段と、 前記第二の重み付け手段の各出力を合成する第二の合成
器と、 前記第一の重み付け手段の重みと前記第二の重み付け手
段の重みを制御する重み制御装置から構成され、 同一列に配置されたＮ個の素子アンテナに接続された前
記第一の重み付け手段の重みの値を同一とすることを特
徴とする適応アンテナ装置。An array antenna in which element antennas are arranged in M rows and N columns; weighting means for imposing complex weights on outputs of the element antennas; a weight control device for controlling weights of the weighting means; And a reference signal generator for generating a reference signal, the adaptive antenna apparatus comprising: a synthesizer for synthesizing all the signals obtained from the M elements antennas arranged in the same row. A second weighting means for imposing a complex weight on an output of the first weighting means; a second weighting means for combining respective outputs of the second weighting means; and the first weighting means. , And a weight control device for controlling the weight of the second weighting means. The weight value of the first weighting means connected to the N element antennas arranged in the same column is the same. An adaptive antenna device characterized by one.
され、鉛直方向にＮ行、水平方向にＭ列の素子アンテナ
を有する請求項１記載の適応アンテナ装置。2. The adaptive antenna device according to claim 1, wherein said array antenna is disposed substantially on a vertical plane, and has N rows of vertical and M columns of element antennas in a horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24548696A JP3388529B2 (en) | 1996-08-29 | 1996-08-29 | Adaptive antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24548696A JP3388529B2 (en) | 1996-08-29 | 1996-08-29 | Adaptive antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1075112A true JPH1075112A (en) | 1998-03-17 |
| JP3388529B2 JP3388529B2 (en) | 2003-03-24 |
Family
ID=17134384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24548696A Expired - Lifetime JP3388529B2 (en) | 1996-08-29 | 1996-08-29 | Adaptive antenna device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3388529B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100414315B1 (en) * | 2000-05-17 | 2004-01-07 | 닛본 덴끼 가부시끼가이샤 | Array antenna transceiver capable of continuing transmission and reception regardless of failure of reference signal supply system |
-
1996
- 1996-08-29 JP JP24548696A patent/JP3388529B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100414315B1 (en) * | 2000-05-17 | 2004-01-07 | 닛본 덴끼 가부시끼가이샤 | Array antenna transceiver capable of continuing transmission and reception regardless of failure of reference signal supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3388529B2 (en) | 2003-03-24 |
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