JP2004297665A - Wireless receiver and communication control method - Google Patents

Wireless receiver and communication control method Download PDF

Info

Publication number
JP2004297665A
JP2004297665A JP2003089909A JP2003089909A JP2004297665A JP 2004297665 A JP2004297665 A JP 2004297665A JP 2003089909 A JP2003089909 A JP 2003089909A JP 2003089909 A JP2003089909 A JP 2003089909A JP 2004297665 A JP2004297665 A JP 2004297665A
Authority
JP
Japan
Prior art keywords
array antenna
antenna
reception
array
signal
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.)
Pending
Application number
JP2003089909A
Other languages
Japanese (ja)
Inventor
Hoi Do
方偉 童
Kugo Morita
空悟 守田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP2003089909A priority Critical patent/JP2004297665A/en
Publication of JP2004297665A publication Critical patent/JP2004297665A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless receiver capable of enhancing the communication quality by efficiently receiving a signal of a desired wave. <P>SOLUTION: The wireless receiver is provided with: a turning unit 2 for turning an array antenna 1; a motor 3 for driving the turning unit 2; an arrival direction detector 6 for detecting the arrival direction of a desired wave on the basis of a signal received by the array antenna 1; an array turning control section 4 for controlling the motor 3 so that the detected arrival direction is coincident with the direction of the array antenna 1 at which the reception capability of the array antenna 1 is maximized to control the turning of the array antenna 1; a weight control section 7 for calculating a weight coefficient of each antenna element so as to optimize the reception quality through an adaptive algorithm on the basis of the received signal; and a reception control means (a multiplier 8 and an adder 9) for controlling the received signal with the weight coefficient. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、複数のアンテナ素子を有するアレーアンテナにより無線信号を受信する無線受信装置、通信制御方法に関する。
【０００２】
【従来の技術】
従来、移動通信システムでは、基地局が複数のアンテナ素子からなるアレーアンテナを備え、送受信の指向性パターンを形成し、移動局（携帯端末）の移動に追従する制御を行なっている。また、携帯電話機等の携帯端末の対基地局追従性能（基地局との間で無線通信接続を維持し続ける能力）が、通信品質面でますます重要となっている。このため、携帯端末が基地局と同様にアレーアンテナを備え、送受信の指向性パターンを形成するものもある。
【０００３】
従来のアレーアンテナ指向性制御方法として、例えば、最小平均二乗誤差（ＭＭＳＥ；Ｍｉｎｉｍｕｍｕ Ｍｅａｎ−Ｓｑｕａｒｅｄ Ｅｒｒｏｒ）に基づいた適応アルゴリズム（ＲＬＳアルゴリズム、ＳＭＩアルゴリズム、ＬＭＳアルゴリズム等）を用いるものが知られている。この方法では、基地局から受信した受信信号と参照信号について、その二乗誤差を最小化するように、アレーアンテナの指向性パターンを形成するための各アンテナ素子の重み係数を適応アルゴリズムにより計算して求める。これにより、干渉波の到来方向にヌル点を向かせ、さらに所望波の到来方向にメインビームを向かせるようにアレーアンテナの指向性を制御している（例えば、非特許文献１参照）。
【０００４】
【非特許文献１】
菊間信良著，「アレーアンテナによる適応信号処理」，株式会社科学技術出版，１９９８年１１月
【０００５】
【発明が解決しようとする課題】
しかし、上述した従来の技術では、アレーアンテナのアンテナ素子数が少ないと、多数の干渉波による影響をキャンセルしきれず、所望波の信号を効率よく受信することができないという問題がある。特に、携帯端末等の小型の無線装置では、アンテナ素子数が少なく、干渉波の数が多い移動通信において十分に干渉波をキャンセルすることが難しく、通信品質に悪影響を及ぼす虞がある。
【０００６】
また、従来、アンテナ素子は円周上に配置されている（アンテナ素子が４つの場合は正方形の各頂点に配置と同じ）。このため、あるアンテナ素子が対向するアンテナ素子により遮蔽される状況が発生することがある。すると、有効なアンテナ素子数が実際の素子数より少ない状態となり、電波受信能力が低下する。例えば、実際のアンテナ素子数が４の場合、有効な素子数が２〜３になる。この結果、電波受信能力が低下し、干渉をキャンセルする能力が悪化し、通信品質に及ぼす悪影響の度合いが増加する。
【０００７】
本発明は、このような事情を考慮してなされたもので、その目的は、所望波の信号を効率よく受信することにより、通信品質の向上を図ることができる無線受信装置、通信制御方法を提供することにある。
【０００８】
【課題を解決するための手段】
上記の課題を解決するために、請求項１に記載の無線受信装置は、複数のアンテナ素子を有するアレーアンテナにより無線信号を受信する無線受信装置において、前記アレーアンテナを回転させる回転手段と、前記回転手段を駆動する駆動手段と、前記受信信号に基づいて所望波の到来方向を検出する到来方向検出手段と、前記検出された到来方向と前記アレーアンテナの受信能力が最大になる前記アレーアンテナの向きとが一致するように、前記駆動手段を制御して前記アレーアンテナの回転を制御するアレー回転制御手段と、前記受信信号に基づき適応アルゴリズムにより、受信品質を最適化するように前記アンテナ素子毎の重み係数を算出する重み制御手段と、前記重み係数により前記受信信号を制御する受信制御手段とを備えたことを特徴としている。
【０００９】
請求項２に記載の無線受信装置においては、前記複数のアンテナ素子は直列に配置され、前記アレー回転制御手段は、前記検出された到来方向と前記複数のアンテナ素子の配列方向に対する直角方向とが一致するように、前記回転制御を行うことを特徴とする。
【００１０】
請求項３に記載の無線受信装置においては、前記重み制御手段は、前記受信制御手段の出力信号と所定の参照信号との誤差に基づいて、前記受信制御手段の出力信号の受信品質を示す値が最良になるように（例えばＳＩＮＲ値（Ｓｉｇｎａｌ ｔｏ Ｉｎｔｅｒｆｅｒｅｎｃｅ ａｎｄ Ｎｏｉｓｅ ｐｏｗｅｒ Ｒａｔｉｏ）が最大になるように）、前記重み係数を制御することを特徴とする。
【００１１】
請求項４に記載の無線受信装置においては、前記重み制御手段は、前記検出された到来方向に基づき、ビームステアリングアルゴリズムにより、該到来方向に前記アレーアンテナの受信指向性パターンのメインビームを向かせるように前記重み係数を制御することを特徴とする。
【００１２】
請求項５に記載の通信制御方法は、複数のアンテナ素子を有するアレーアンテナと、前記アレーアンテナを回転させる回転手段と、前記回転手段を駆動する駆動手段とを備え、前記アレーアンテナにより無線信号を受信する無線受信装置における通信制御方法であって、前記受信信号に基づいて所望波の到来方向を検出する過程と、前記検出された到来方向と前記アレーアンテナの受信能力が最大になる前記アレーアンテナの向きとが一致するように、前記駆動手段を制御して前記アレーアンテナの回転を制御する過程と、前記受信信号に基づき適応アルゴリズムにより、受信品質を最適化するように前記アンテナ素子毎の重み係数を算出する過程と、前記重み係数により前記受信信号を制御する過程とを含むことを特徴としている。
【００１３】
【発明の実施の形態】
以下、図面を参照し、本発明の一実施形態について説明する。
図１は、本発明の一実施形態による無線受信装置１００の構成を示すブロック図である。この無線受信装置１００は、例えば無線通信システムの移動局として使用される携帯端末、あるいは無線基地局装置に具備される。
【００１４】
図１において、無線受信装置１００は、複数のアンテナ素子ＡＮＴ−１〜Ｎからなるアレーアンテナ１と、回転部２と、モーター３と、アレー回転制御部４と、無線部５と、到来方向検出部６と、重み制御部７と、各アンテナ素子ＡＮＴ−１〜Ｎに対応して設けられている乗算器８と、加算器９と、減算器１０とを有する。
【００１５】
アレーアンテナ１は、アンテナ素子ＡＮＴ−１〜Ｎが直列に配置された直列アレーアンテナである。回転部２は、アレーアンテナ１を回転させる。この回転範囲は、アンテナ素子ＡＮＴ−１〜Ｎの配列面内の３６０°である。モーター３は、回転部２を駆動する。アレー回転制御部４は、モーター３を制御してアレーアンテナ１の回転を制御する。この回転制御は、到来方向検出部６から通知される所望波の到来方向と、アンテナ素子ＡＮＴ−１〜Ｎの配列方向（以下、アレー配列方向と称する）とが直角となるように行われる。すなわち、所望波の到来方向とアレー配列方向に対する直角方向とが一致するように、アレーアンテナ１が回転される。アレー配列方向に対する直角方向は、アレーアンテナ１の受信能力が最大になる方向である。
【００１６】
無線部５は、ローノイズ増幅器、ダウンコンバータ等を備え、アレーアンテナ１で受信されたアレー素子受信信号Ａ１〜ＡＮを高周波から低周波（例えばベースバンド周波数）に変換し、さらに増幅し、受信信号Ｂ１〜ＢＮとして出力する。受信信号Ｂ１〜ＢＮは、到来方向検出部６と重み制御部７と対応する乗算器８に入力される。
【００１７】
到来方向検出部６は、入力された受信信号Ｂ１〜ＢＮに基づいて、所望波の到来方向を検出する。この検出された到来方向は、アレー配列方向に対する相対的な方向である。例えば、アレー配列方向に対する直角方向が０°、即ちアレー配列方向が９０°として予め設定され、これを基準にして所望波の到来方向を示す相対角度が求められる。到来方向検出部６によって検出された所望波の到来方向を示す相対角度は、アレー回転制御部４及び重み制御部７に出力される。そして、アレー回転制御部４は、常時、所望波の到来方向（相対角度）とアレー配列方向に対する直角方向（０°）とが一致するように、アレーアンテナ１の回転を制御する。これにより、例えば移動局である無線受信装置１００が移動しても、所望波の到来方向にアレーアンテナ１の受信能力が最大になるアレーアンテナ１の向きが追従することとなり、受信品質が向上する。
【００１８】
上記到来方向検出部６における所望波到来方向の検出には、一般的に、例えばＭＵＳＩＣ（ＭＵｌｔｉｐｌｅ Ｓｉｇｎａｌ Ｃｌａｓｓｉｆｉｃａｔｉｏｎ）などのアルゴリズムが利用可能である。また、特定の無線通信方式、例えばパイロット信号が含まれるＣＤＭＡ方式に特化した方法などを利用することも可能である。
【００１９】
重み制御部７は、入力された受信信号Ｂ１〜ＢＮに基づき適応アルゴリズムにより、受信品質を最適化するようにアンテナ素子毎の重み係数Ｗ１〜ＷＮを算出する。これら重み係数Ｗ１〜ＷＮは、各々対応する乗算器８により受信信号Ｂ１〜ＢＮと乗算される。これら乗算後の信号は加算器９により加算される。この加算後の信号はアレー出力信号として出力される。これにより、受信品質が最適となる受信指向性パターンが形成される。
減算器１０は所定の参照信号とアレー出力信号の誤差を求め、この誤差信号を重み制御部７に出力する。
【００２０】
上記重み制御部７は、例えば、入力された受信信号及び参照信号との誤差信号とに基づき、アレー出力信号のＳＩＮＲ値（Ｓｉｇｎａｌ ｔｏ Ｉｎｔｅｒｆｅｒｅｎｃｅ ａｎｄ Ｎｏｉｓｅ ｐｏｗｅｒ Ｒａｔｉｏ）が最大になるように重み係数Ｗ１〜ＷＮを制御する。この重み制御アルゴリズムとして、アレー出力信号のＳＩＮＲ値を最大にすることができるＭＭＳＥベースの適応アルゴリズム、例えばＬＭＳ、ＲＬＳ、ＳＭＩなどが利用可能である。
又は、重み制御部７は、到来方向検出部６から入力された所望波の到来方向を示す相対角度に基づき、ビームステアリングアルゴリズムにより、所望波の到来方向にアレーアンテナ１の受信指向性パターンのメインビームを向かせるように重み係数Ｗ１〜ＷＮを制御する。
【００２１】
上述したように本実施形態によれば、所望波の到来方向にアレーアンテナ１の受信能力が最大になるアレーアンテナ１の向きが追従し、さらに、受信品質が最適となる受信指向性パターンが形成される。これにより、所望波の信号を効率よく受信することができ、通信品質が向上する。
【００２２】
また、複数のアンテナ素子を直列に配置して直列アレーアンテナを構成し、所望波の到来方向と該アレーアンテナのアレー配列方向に対する直角方向とが一致するように、アレーアンテナが回転される。これにより、アンテナ素子間で遮蔽が生じることが防止され、電波受信能力を良好に維持することができる。
【００２３】
なお、上述した実施形態において、アレーアンテナ１は送受信で切替えて使用するものであってもよい。
【００２４】
なお、上述した実施形態においては、各アンテナ素子ＡＮＴ−１〜Ｎに対応して設けられている乗算器８と加算器９が受信制御手段に対応する。
【００２５】
以上、本発明の実施形態を図面を参照して詳述してきたが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等も含まれる。
【００２６】
【発明の効果】
以上説明したように、本発明によれば、所望波の到来方向にアレーアンテナの受信能力が最大になるアレーアンテナの向きが追従し、さらに、受信品質が最適となる受信指向性パターンが形成されるので、所望波の信号を効率よく受信することができ、通信品質が向上する。
【図面の簡単な説明】
【図１】本発明の一実施形態による無線受信装置１００の構成を示すブロック図である。
【符号の説明】
１…アレーアンテナ、２…回転部、３…モーター、４…アレー回転制御部、５…無線部、６…到来方向検出部、７…重み制御部、８…乗算器、９…加算器、１０…減算器、１００…無線受信装置、ＡＮＴ−１〜Ｎ…アンテナ素子[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wireless reception device and a communication control method for receiving a wireless signal using an array antenna having a plurality of antenna elements.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a mobile communication system, a base station includes an array antenna including a plurality of antenna elements, forms a directivity pattern for transmission and reception, and performs control for following the movement of a mobile station (portable terminal). In addition, the performance of a mobile terminal such as a mobile phone to follow a base station (the ability to maintain a wireless communication connection with a base station) has become increasingly important in terms of communication quality. For this reason, some mobile terminals are provided with an array antenna like a base station and form a directivity pattern for transmission and reception.
[0003]
As a conventional array antenna directivity control method, for example, a method using an adaptive algorithm (RLS algorithm, SMI algorithm, LMS algorithm, etc.) based on a minimum mean square error (MMSE) is known. In this method, for the reception signal and the reference signal received from the base station, the weighting factor of each antenna element for forming the directivity pattern of the array antenna is calculated by an adaptive algorithm so as to minimize the square error. Ask. Thereby, the directivity of the array antenna is controlled so that the null point is directed in the direction of arrival of the interference wave and the main beam is directed in the direction of arrival of the desired wave (for example, see Non-Patent Document 1).
[0004]
[Non-patent document 1]
Nobuyoshi Kikuma, "Adaptive signal processing by array antenna", Science and Technology Publishing Co., Ltd., November 1998 [0005]
[Problems to be solved by the invention]
However, in the above-described conventional technique, if the number of antenna elements of the array antenna is small, the effect of a large number of interference waves cannot be completely canceled, and a signal of a desired wave cannot be received efficiently. In particular, in a small wireless device such as a mobile terminal, it is difficult to sufficiently cancel an interference wave in mobile communication having a small number of antenna elements and a large number of interference waves, which may adversely affect communication quality.
[0006]
Conventionally, the antenna elements are arranged on the circumference (in the case of four antenna elements, they are arranged at the vertices of a square). Therefore, a situation may occur in which a certain antenna element is shielded by the opposing antenna element. Then, the number of effective antenna elements becomes smaller than the actual number of elements, and the radio wave receiving capability decreases. For example, when the actual number of antenna elements is four, the number of effective elements is two to three. As a result, the ability to receive radio waves decreases, the ability to cancel interference deteriorates, and the degree of adverse effects on communication quality increases.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a wireless reception device and a communication control method capable of improving communication quality by efficiently receiving a signal of a desired wave. To provide.
[0008]
[Means for Solving the Problems]
In order to solve the above problem, the wireless receiving device according to claim 1 is a wireless receiving device that receives a wireless signal by an array antenna having a plurality of antenna elements, wherein a rotating unit that rotates the array antenna, A driving unit for driving a rotating unit, an arrival direction detection unit for detecting an arrival direction of a desired wave based on the received signal, and a detection direction of the array antenna in which the detected arrival direction and the reception capability of the array antenna are maximized. Array rotation control means for controlling the driving means to control the rotation of the array antenna so that the orientation matches with the antenna element; and each antenna element for optimizing reception quality by an adaptive algorithm based on the received signal. Weighting control means for calculating a weighting coefficient of the signal, and reception control means for controlling the reception signal using the weighting coefficient. It is characterized.
[0009]
In the wireless receiving device according to claim 2, the plurality of antenna elements are arranged in series, and the array rotation control unit determines that the detected arrival direction and a direction perpendicular to the arrangement direction of the plurality of antenna elements are different. The rotation control is performed so as to match.
[0010]
4. The radio receiving apparatus according to claim 3, wherein the weight control unit is configured to determine a reception quality of the output signal of the reception control unit based on an error between the output signal of the reception control unit and a predetermined reference signal. (E.g., so that the SINR value (Signal to Interference and Noise power Ratio) becomes maximum).
[0011]
In the wireless receiving apparatus according to claim 4, the weight control means directs the main beam of the reception directivity pattern of the array antenna in the direction of arrival by a beam steering algorithm based on the detected direction of arrival. The weight coefficient is controlled as described above.
[0012]
The communication control method according to claim 5, further comprising: an array antenna having a plurality of antenna elements; rotating means for rotating the array antenna; and driving means for driving the rotating means, wherein a radio signal is transmitted by the array antenna. A communication control method in a radio receiving apparatus for receiving, comprising: a step of detecting a direction of arrival of a desired wave based on the received signal; and the array antenna in which the detected direction of arrival and the receiving capability of the array antenna are maximized. Controlling the driving means to control the rotation of the array antenna so that the directions of the antenna elements coincide with each other; and adjusting the weight of each antenna element so as to optimize reception quality by an adaptive algorithm based on the received signal. The method includes a step of calculating a coefficient and a step of controlling the received signal using the weight coefficient.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a configuration of a wireless reception device 100 according to an embodiment of the present invention. The radio receiving apparatus 100 is provided in, for example, a mobile terminal used as a mobile station of a radio communication system or a radio base station apparatus.
[0014]
In FIG. 1, a radio receiving apparatus 100 includes an array antenna 1 including a plurality of antenna elements ANT-1 to ANT-N, a rotation unit 2, a motor 3, an array rotation control unit 4, a radio unit 5, an arrival direction detection. It has a unit 6, a weight control unit 7, a multiplier 8 provided for each of the antenna elements ANT-1 to ANT-N, an adder 9, and a subtractor 10.
[0015]
The array antenna 1 is a series array antenna in which antenna elements ANT-1 to ANT-N are arranged in series. The rotator 2 rotates the array antenna 1. This rotation range is 360 ° in the arrangement plane of the antenna elements ANT-1 to ANT-N. The motor 3 drives the rotating unit 2. The array rotation controller 4 controls the motor 3 to control the rotation of the array antenna 1. This rotation control is performed so that the arrival direction of the desired wave notified from the arrival direction detector 6 and the arrangement direction of the antenna elements ANT-1 to ANT-N (hereinafter, referred to as array arrangement direction) are at right angles. That is, the array antenna 1 is rotated such that the arrival direction of the desired wave and the direction perpendicular to the array arrangement direction match. A direction perpendicular to the array arrangement direction is a direction in which the receiving capability of the array antenna 1 is maximized.
[0016]
The radio unit 5 includes a low noise amplifier, a down converter, and the like, converts the array element received signals A1 to AN received by the array antenna 1 from a high frequency to a low frequency (for example, a baseband frequency), further amplifies the signal, and amplifies the received signal B1. To BN. The received signals B1 to BN are input to the arrival direction detector 6, the weight controller 7, and the corresponding multiplier 8.
[0017]
The arrival direction detection unit 6 detects the arrival direction of a desired wave based on the input received signals B1 to BN. The detected arrival direction is a direction relative to the array arrangement direction. For example, a direction perpendicular to the array arrangement direction is set to 0 °, that is, the array arrangement direction is set to 90 °, and a relative angle indicating the arrival direction of a desired wave is obtained based on the preset angle. The relative angle indicating the arrival direction of the desired wave detected by the arrival direction detection unit 6 is output to the array rotation control unit 4 and the weight control unit 7. The array rotation control unit 4 controls the rotation of the array antenna 1 so that the arrival direction (relative angle) of the desired wave always coincides with the direction (0 °) perpendicular to the array arrangement direction. As a result, even if the radio receiving apparatus 100 as a mobile station moves, for example, the direction of the array antenna 1 at which the receiving capability of the array antenna 1 is maximized follows the arrival direction of a desired wave, and the reception quality is improved. .
[0018]
In general, an algorithm such as MUSIC (Multiple Signal Classification) can be used to detect the arrival direction of a desired wave in the arrival direction detector 6. Further, it is also possible to use a method specific to a specific wireless communication method, for example, a CDMA method including a pilot signal.
[0019]
The weight control unit 7 calculates weight coefficients W1 to WN for each antenna element so as to optimize reception quality by an adaptive algorithm based on the input received signals B1 to BN. These weighting factors W1 to WN are multiplied by received signals B1 to BN by corresponding multipliers 8, respectively. These multiplied signals are added by the adder 9. The signal after this addition is output as an array output signal. As a result, a reception directivity pattern that optimizes reception quality is formed.
The subtractor 10 calculates an error between a predetermined reference signal and an array output signal, and outputs the error signal to the weight control unit 7.
[0020]
The weight control unit 7, for example, based on the input received signal and the error signal with the reference signal, sets the weight coefficients W1 to W1 so that the SINR value (Signal to Interference and Noise power Ratio) of the array output signal is maximized. Control WN. As the weight control algorithm, an MMSE-based adaptive algorithm capable of maximizing the SINR value of the array output signal, for example, LMS, RLS, SMI, or the like can be used.
Alternatively, based on the relative angle indicating the arrival direction of the desired wave input from the arrival direction detection unit 6, the weight control unit 7 may use the beam steering algorithm to calculate the main direction of the reception directivity pattern of the array antenna 1 in the arrival direction of the desired wave. The weight coefficients W1 to WN are controlled so as to direct the beam.
[0021]
As described above, according to the present embodiment, the direction of the array antenna 1 at which the receiving capability of the array antenna 1 is maximized follows the arrival direction of the desired wave, and further, a reception directivity pattern that optimizes reception quality is formed. Is done. Thereby, the signal of the desired wave can be received efficiently, and the communication quality is improved.
[0022]
Also, a plurality of antenna elements are arranged in series to form a series array antenna, and the array antenna is rotated such that the arrival direction of a desired wave coincides with the direction perpendicular to the array arrangement direction of the array antenna. As a result, it is possible to prevent shielding between the antenna elements, and it is possible to maintain good radio wave receiving capability.
[0023]
In the above-described embodiment, the array antenna 1 may be switched between transmission and reception.
[0024]
In the embodiment described above, the multiplier 8 and the adder 9 provided corresponding to each of the antenna elements ANT-1 to ANT-N correspond to the reception control means.
[0025]
As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes a design change or the like without departing from the gist of the present invention.
[0026]
【The invention's effect】
As described above, according to the present invention, the direction of the array antenna that maximizes the receiving capability of the array antenna follows the arrival direction of the desired wave, and further, a reception directivity pattern that optimizes the reception quality is formed. Therefore, the signal of the desired wave can be received efficiently, and the communication quality is improved.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a wireless reception device 100 according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Array antenna, 2 ... Rotation part, 3 ... Motor, 4 ... Array rotation control part, 5 ... Radio part, 6 ... Arrival direction detection part, 7 ... Weight control part, 8 ... Multiplier, 9 ... Adder, 10 ... Subtractor, 100 ... Wireless receiver, ANT-1 to ANT ... Nantenna element

Claims (5)

複数のアンテナ素子を有するアレーアンテナにより無線信号を受信する無線受信装置において、
前記アレーアンテナを回転させる回転手段と、
前記回転手段を駆動する駆動手段と、
前記受信信号に基づいて所望波の到来方向を検出する到来方向検出手段と、
前記検出された到来方向と前記アレーアンテナの受信能力が最大になる前記アレーアンテナの向きとが一致するように、前記駆動手段を制御して前記アレーアンテナの回転を制御するアレー回転制御手段と、
前記受信信号に基づき適応アルゴリズムにより、受信品質を最適化するように前記アンテナ素子毎の重み係数を算出する重み制御手段と、
前記重み係数により前記受信信号を制御する受信制御手段と、
を備えたことを特徴とする無線受信装置。In a wireless receiving device that receives a wireless signal by an array antenna having a plurality of antenna elements,
Rotating means for rotating the array antenna;
Driving means for driving the rotating means,
Arrival direction detection means for detecting the arrival direction of the desired wave based on the received signal,
Array rotation control means for controlling the driving means to control the rotation of the array antenna, so that the detected direction of arrival and the orientation of the array antenna at which the receiving capability of the array antenna is maximized,
A weight control unit that calculates a weight coefficient for each antenna element so as to optimize reception quality by an adaptive algorithm based on the received signal,
Reception control means for controlling the reception signal by the weight coefficient,
A wireless receiving device comprising: 前記複数のアンテナ素子は直列に配置され、
前記アレー回転制御手段は、前記検出された到来方向と前記複数のアンテナ素子の配列方向に対する直角方向とが一致するように、前記回転制御を行う
ことを特徴とする請求項１に記載の無線受信装置。The plurality of antenna elements are arranged in series,
2. The radio reception apparatus according to claim 1, wherein the array rotation control unit performs the rotation control such that the detected arrival direction and a direction perpendicular to an arrangement direction of the plurality of antenna elements coincide with each other. apparatus. 前記重み制御手段は、前記受信制御手段の出力信号と所定の参照信号との誤差に基づいて、前記受信制御手段の出力信号の受信品質を示す値が最良になるように前記重み係数を制御することを特徴とする請求項１または請求項２に記載の無線受信装置。The weight control unit controls the weight coefficient based on an error between the output signal of the reception control unit and a predetermined reference signal such that a value indicating the reception quality of the output signal of the reception control unit becomes the best. The wireless receiving device according to claim 1 or 2, wherein: 前記重み制御手段は、前記検出された到来方向に基づき、ビームステアリングアルゴリズムにより、該到来方向に前記アレーアンテナの受信指向性パターンのメインビームを向かせるように前記重み係数を制御することを特徴とする請求項１または請求項２に記載の無線受信装置。The weight control means, based on the detected direction of arrival, by a beam steering algorithm, controlling the weight coefficient so as to direct the main beam of the reception directivity pattern of the array antenna in the direction of arrival. The wireless receiving device according to claim 1 or 2, wherein 複数のアンテナ素子を有するアレーアンテナと、前記アレーアンテナを回転させる回転手段と、前記回転手段を駆動する駆動手段とを備え、前記アレーアンテナにより無線信号を受信する無線受信装置における通信制御方法であって、
前記受信信号に基づいて所望波の到来方向を検出する過程と、
前記検出された到来方向と前記アレーアンテナの受信能力が最大になる前記アレーアンテナの向きとが一致するように、前記駆動手段を制御して前記アレーアンテナの回転を制御する過程と、
前記受信信号に基づき適応アルゴリズムにより、受信品質を最適化するように前記アンテナ素子毎の重み係数を算出する過程と、
前記重み係数により前記受信信号を制御する過程と、
を含むことを特徴とする通信制御方法。A communication control method in a wireless receiving device, comprising: an array antenna having a plurality of antenna elements; a rotating unit for rotating the array antenna; and a driving unit for driving the rotating unit, wherein a wireless signal is received by the array antenna. hand,
Detecting the arrival direction of the desired wave based on the received signal,
Controlling the driving means to control the rotation of the array antenna so that the direction of the detected arrival direction and the direction of the array antenna at which the receiving capability of the array antenna is maximized match;
A step of calculating a weight coefficient for each antenna element so as to optimize reception quality by an adaptive algorithm based on the received signal,
Controlling the received signal with the weighting factor;
A communication control method comprising:
JP2003089909A 2003-03-28 2003-03-28 Wireless receiver and communication control method Pending JP2004297665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003089909A JP2004297665A (en) 2003-03-28 2003-03-28 Wireless receiver and communication control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003089909A JP2004297665A (en) 2003-03-28 2003-03-28 Wireless receiver and communication control method

Publications (1)

Publication Number Publication Date
JP2004297665A true JP2004297665A (en) 2004-10-21

Family

ID=33403658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003089909A Pending JP2004297665A (en) 2003-03-28 2003-03-28 Wireless receiver and communication control method

Country Status (1)

Country Link
JP (1) JP2004297665A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009533010A (en) * 2006-04-06 2009-09-10 アンドリュー・コーポレーション Cellular antenna and system and method therefor
CN102664670A (en) * 2012-03-31 2012-09-12 福建星网锐捷网络有限公司 Uplink signal reception control method of intelligent antenna, device and wireless access point
WO2021066520A1 (en) * 2019-10-02 2021-04-08 주식회사 케이엠더블유 Apparatus and method for controlling signal quality of antenna

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114513U (en) * 1984-06-25 1986-01-28 三菱電機株式会社 radar device
JPH04273082A (en) * 1991-02-28 1992-09-29 Toyota Central Res & Dev Lab Inc Tracking antenna device
JPH05102895A (en) * 1991-10-04 1993-04-23 Nippon Hoso Kyokai <Nhk> Satellite broadcasting receiver for aircraft
JPH0897758A (en) * 1994-09-22 1996-04-12 Mitsubishi Electric Corp Phased array antenna system
JPH1070502A (en) * 1996-08-28 1998-03-10 Matsushita Electric Ind Co Ltd Directional control antenna system
JP2000051220A (en) * 1998-05-13 2000-02-22 Waldemar Link Gmbh & Co Surgical nail forceps
JP2001244719A (en) * 2000-02-28 2001-09-07 Nec Corp External disturbance suppression beam-directing antenna for mounting on satellite
JP2001251233A (en) * 1999-12-27 2001-09-14 Toshiba Corp Wireless communications equipment using adaptive antenna
JP2002084217A (en) * 2000-09-08 2002-03-22 Matsushita Electric Ind Co Ltd Base station device and method for estimating arrival direction
JP2002111564A (en) * 2000-09-27 2002-04-12 Matsushita Electric Ind Co Ltd Base station device and radio transmission method
JP2002190757A (en) * 2000-12-21 2002-07-05 Matsushita Electric Ind Co Ltd Radio base station equipment and radio communication method
JP2002368662A (en) * 2001-06-08 2002-12-20 Mitsubishi Electric Corp Base station equipment
JP2003017926A (en) * 2001-06-29 2003-01-17 Japan Radio Co Ltd Division processing type adaptive array antenna

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114513U (en) * 1984-06-25 1986-01-28 三菱電機株式会社 radar device
JPH04273082A (en) * 1991-02-28 1992-09-29 Toyota Central Res & Dev Lab Inc Tracking antenna device
JPH05102895A (en) * 1991-10-04 1993-04-23 Nippon Hoso Kyokai <Nhk> Satellite broadcasting receiver for aircraft
JPH0897758A (en) * 1994-09-22 1996-04-12 Mitsubishi Electric Corp Phased array antenna system
JPH1070502A (en) * 1996-08-28 1998-03-10 Matsushita Electric Ind Co Ltd Directional control antenna system
JP2000051220A (en) * 1998-05-13 2000-02-22 Waldemar Link Gmbh & Co Surgical nail forceps
JP2001251233A (en) * 1999-12-27 2001-09-14 Toshiba Corp Wireless communications equipment using adaptive antenna
JP2001244719A (en) * 2000-02-28 2001-09-07 Nec Corp External disturbance suppression beam-directing antenna for mounting on satellite
JP2002084217A (en) * 2000-09-08 2002-03-22 Matsushita Electric Ind Co Ltd Base station device and method for estimating arrival direction
JP2002111564A (en) * 2000-09-27 2002-04-12 Matsushita Electric Ind Co Ltd Base station device and radio transmission method
JP2002190757A (en) * 2000-12-21 2002-07-05 Matsushita Electric Ind Co Ltd Radio base station equipment and radio communication method
JP2002368662A (en) * 2001-06-08 2002-12-20 Mitsubishi Electric Corp Base station equipment
JP2003017926A (en) * 2001-06-29 2003-01-17 Japan Radio Co Ltd Division processing type adaptive array antenna

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009533010A (en) * 2006-04-06 2009-09-10 アンドリュー・コーポレーション Cellular antenna and system and method therefor
CN102664670A (en) * 2012-03-31 2012-09-12 福建星网锐捷网络有限公司 Uplink signal reception control method of intelligent antenna, device and wireless access point
CN102664670B (en) * 2012-03-31 2014-12-24 福建星网锐捷网络有限公司 Uplink signal reception control method of intelligent antenna, device and wireless access point
WO2021066520A1 (en) * 2019-10-02 2021-04-08 주식회사 케이엠더블유 Apparatus and method for controlling signal quality of antenna

Similar Documents

Publication Publication Date Title
US6304215B1 (en) Method of use for an adaptive antenna in same frequency networks
JP3888189B2 (en) Adaptive antenna base station equipment
EP1559169A1 (en) Method and apparatus for adapting antenna array using received predetermined signal
JP2003243921A (en) Wireless receiver and method for controlling directional angle of antenna
US6501943B1 (en) Adaptive directivity transmission device and method
Shubair et al. A Setup for the Evaluation of MUSIC and LMS Algorithms for a Smart Antenna System.
Celik et al. Implementation and experimental verification of hybrid smart-antenna beamforming algorithm
KR20150004287A (en) Method and apparatus for controlling directivity
JP3629195B2 (en) Arrival direction estimation apparatus and arrival direction estimation method
US7058145B2 (en) Diversity gain with a compact antenna
JP2004096346A (en) Radio communication equipment
JP3370621B2 (en) Mobile communication base station antenna device
Samhan et al. Design and implementation of an adaptive smart antenna system
JP2004297665A (en) Wireless receiver and communication control method
JP4166401B2 (en) Reception directivity control method, antenna apparatus, and mobile communication base station and mobile station using the same
JP3272961B2 (en) Adaptive array antenna
JPH11284424A (en) Antenna device for mobile terminal
JP2008042802A (en) Adaptive antenna device and radio communication apparatus comprising the same
JP2004297483A (en) Mobile station, and communication control method
JP3597694B2 (en) Adaptive antenna device
JP4219490B2 (en) Receiving method and receiving apparatus
JP2004297663A (en) Wireless apparatus, and communication control method
CN1312858C (en) Base station
JP6613802B2 (en) ANTENNA DEVICE, ANTENNA DEVICE CONTROL METHOD, AND ANTENNA DEVICE CONTROL PROGRAM
JP3740063B2 (en) Base station apparatus and diversity control method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050909

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070621

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070626

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070822

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071030

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071227

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080129

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080327

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20080507

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080604

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20080717

A912 Removal of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20080808