JPH11234197A - Mobile communication system using adaptive array antenna - Google Patents

Mobile communication system using adaptive array antenna

Info

Publication number
JPH11234197A
JPH11234197A JP10044245A JP4424598A JPH11234197A JP H11234197 A JPH11234197 A JP H11234197A JP 10044245 A JP10044245 A JP 10044245A JP 4424598 A JP4424598 A JP 4424598A JP H11234197 A JPH11234197 A JP H11234197A
Authority
JP
Japan
Prior art keywords
base station
plurality
program
mobile
mobile station
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
JP10044245A
Other languages
Japanese (ja)
Inventor
Minako Kitahara
Kenzo Urabe
美奈子 北原
健三 占部
Original Assignee
Kokusai Electric Co Ltd
国際電気株式会社
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 Kokusai Electric Co Ltd, 国際電気株式会社 filed Critical Kokusai Electric Co Ltd
Priority to JP10044245A priority Critical patent/JPH11234197A/en
Publication of JPH11234197A publication Critical patent/JPH11234197A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • Y02D70/44Radio transmission systems, i.e. using radiation field
    • Y02D70/442Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
    • Y02D70/444Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • Y02D70/44Radio transmission systems, i.e. using radiation field
    • Y02D70/448Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • Y02D70/449Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Abstract

PROBLEM TO BE SOLVED: To adaptively select an antenna control method best suited to a communicating situation by allowing a mobile station to inform a base station of a reception quality and programmably setting a control algorithm downloaded from the base station so as to mutually communicate. SOLUTION: Based on error information from an error information detecting part 14, a control part 15 judges the necessity to change an algorithm from information on the ratio of a desired power to an interfering power, the ratio of a desired power to a noise power, etc., to designate an optimum algorithm in a program memory 16. A DSP 17 leads out weighting coefficients of an antenna according to the designated algorithm and adjusts a phase/amplitude. When the selected optimum algorithm is different from the default program, it is downloaded and saved in the memory 16, then is sent to the DSP 17 to transmit a preparation completion signal. The base station transmits an information transmitting signal. This data is received by using a received algorithm which is judged to be optimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mobile communication by a mobile terminal having an adaptive array antenna, and more particularly to a mobile communication system using an adaptive array antenna capable of switching an antenna control method according to a communication situation. It is.

[0002]

2. Description of the Related Art A mobile communication method using an adaptive array antenna includes a method of scanning a main beam of the array antenna to direct a radio wave in a direction of arrival, and a CMA (Constant) for controlling a null point in a direction of an interfering wave. -Modul
This technique controls multipath waves to be suppressed by a method using an algorithm such as us-algorithm or LMS (least-mean-square) to reduce frequency selective fading.

[0003]

In a conventional mobile communication system using an adaptive array antenna, one of the various antenna control methods described above is fixedly used. However, despite the fact that the optimal antenna control method differs depending on the radio wave use situation, the control algorithm is fixed in the conventional adaptive array antenna, so it is possible to save power depending on the situation. However, there has been a problem that, although the receiving sensitivity can be improved, this cannot be dealt with.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a mobile communication system using an adaptive array antenna capable of adaptively selecting a most suitable antenna control method according to a communication situation. It is in.

[0005]

SUMMARY OF THE INVENTION A mobile communication system using an adaptive array antenna according to the present invention is a mobile communication system in which a plurality of mobile stations having adaptive array antenna receiving means using a plurality of antennas and a base station communicate with each other. The mobile station, the mobile station is a setting means capable of programmably set any one of a plurality of control algorithms for adaptively controlling the plurality of antennas, the signal-to-noise ratio of the received signal and And a reception quality notifying unit for notifying the base station of a reception quality status dependent on a signal-to-interference ratio, wherein the base station performs the mobile operation according to the reception quality status notified from the mobile station. Selecting means for selecting a control algorithm determined to be optimum among the plurality of control algorithms of the station; and Means for downloading to the base station, wherein the mobile station notifies the base station of the reception quality and sets the control algorithm downloaded from the base station in a programmable manner to perform the mutual communication. It is characterized by using an antenna.

Further, there is provided a mobile communication system in which a plurality of mobile stations provided with an adaptive array antenna receiving means using a plurality of antennas and a base station communicate with each other, wherein the mobile station adaptively controls the plurality of antennas. A storage unit for storing in advance a list of a plurality of control algorithms for controlling, and an optimum list of the plurality of control algorithms in accordance with a reception quality condition depending on a signal-to-noise ratio or a signal-to-interference ratio of a received signal. Catalog selection means for selecting a list of control algorithms determined to be determined, comprising request issuing means for requesting the base station to download the program of the selected control algorithm to the mobile station, The base station, according to a request from the mobile station, a program storage unit that stores a program of the plurality of control algorithms Means for reading a control algorithm program from the storage means and downloading the program to the mobile station, wherein the mobile station is configured to perform mutual communication according to the control algorithm program downloaded from the base station. It is assumed that.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a mobile terminal according to a first embodiment of the present invention, and is an example of a configuration of a reception array mobile terminal using an adaptive array antenna as a reception antenna. In the figure, 1 to 4 are antenna receiving units, 5 is a hybrid, and 6 is a transmitting unit. 7 is a modulator for modulating transmission data, 8 to 11 are phase and amplitude adjustment circuits for weighting each antenna element, 12 is a combiner for obtaining the output sum of each antenna element, 13 is a demodulator, and 14 is error information. To the DSP 17 and also to the control unit 15, an error information detection unit, 15 is a control unit that determines the change of the algorithm used, 16 is a default program,
A program memory for sending a program received by download to the DSP 17, and a DSP (digital signal processor) 17 for outputting a weight control signal for each antenna according to a designated algorithm.

As shown in FIG. 1, this receiving array mobile terminal adjusts the phase amplitude of each antenna reception power of the plurality of antenna element receiving units 1 to 4 and the weight coefficient of the antenna from the DSP 17 by the phase amplitude adjustment. The output is performed by the circuits 8 to 11, the outputs are added by the combiner 12, and the demodulator 13 demodulates the antenna output. A desired power to interference power ratio (SIR: Signal to Inte
rfrence Ratio) and desired power to noise power ratio (SNR:
The control unit 15 determines whether to change the algorithm based on signal-to-noise ratio information or the like, and specifies the optimal algorithm in the program memory 16. The DSP 17 derives a weight coefficient of the antenna according to a designated algorithm and adjusts the phase amplitude.

FIG. 2 shows an example of a signal flow between the terminal and the base station according to the first embodiment of the present invention, and shows an example of a signal flow from power-on of the mobile terminal to start of communication.

[0010] After the power is turned on, in the default receiving system of the adaptive array, when a broadcast channel is received from the base station to all the mobile stations within the communicable area, the mobile terminal performs a location registration with the base station. The standby signal is transmitted at regular time intervals (transmission is performed with a single antenna in FIG. 1). The base station transmits a signal responding to this to the terminal. In this exchange, the terminal sets the desired power-to-interference power ratio SIR and the desired power-to-noise power SNR of the downlink as shown in FIG.
And reports this to the base station. The base station that has received the standby signal can also estimate the approximate communication distance with the terminal from the received power. When the terminal has transmission data, the base station determines the SIR, SNR,
Based on the estimated communication distance, the current traffic situation of the base station, and the like, it is determined which algorithm is optimal for reception by the mobile terminal.

For example, if the number of interfering stations within the communication range is large and S
When the IR is small, a method based on an algorithm (CMA, LMS, etc.) for automatically pointing the null point in the direction of the jamming wave is selected. Select an antenna control method that aims for maximum directivity, reduces power required for communication, or extends communication distance.

Also, the communication distance is determined from the received power, and when it is determined that the communication distance is short, the antenna output is reduced by one, and when the interference is large, the number of operable circuits is reduced to reduce the number of operable circuits to save power. Such control can also be performed. As described above, in the base station and the terminal capable of supporting a plurality of media, the required transmission quality depending on the service of each transmission medium such as voice, image, and data is different, so that the transmission quality such as voice communication is not so high. In the case of transmission on a medium that does not cause any problem, it is also possible to reduce the number of antenna outputs and save power.

When the program of the selected optimum algorithm is different from the default program, download data of the program is downloaded to the terminal.
The downloaded program is stored in the program memory 16 of FIG. DSP17
When the download program is sent to the program memory (when the program in the DSP is the default program), the program is evacuated to the program memory 16. After completing this operation, the terminal transmits a reception preparation completion signal, and the base station transmits an information transmission signal. This data is received using the receiving algorithm determined to be optimal.

FIG. 3 is a signal flow chart showing another method in the first embodiment of FIG. After the power is turned on, when the adaptive array default receiving system receives a broadcast channel from the base station to all mobile stations in the communicable area, the mobile terminal issues a standby signal for performing position registration with the base station. Transmission is performed at regular intervals (transmission is performed with a single antenna in FIG. 1). The base station transmits a signal responding to this to the terminal. When the base station starts data transmission, the base station sends a data transmission start signal including the current traffic status information of the base station to the corresponding terminal. By this means, the terminal transmits the downlink SIR, SNR, estimated communication distance, and the current traffic situation of the base station to the control unit 15 in FIG.
To determine the optimal algorithm, and make a download request to the base station using the optimal algorithm download request signal. When the default algorithm is determined to be optimal, the signal indicates that downloading is not performed.

[0015] Upon receiving the request signal, the base station downloads the corresponding algorithm download data. The downloaded program is stored in the program memory 16 of FIG. When the download program is sent to the DSP 17 (when the program in the DSP is a default program), the program is evacuated to the program memory 16. After finishing this operation, the terminal transmits a reception preparation completion signal, and the base station starts transmitting an information transmission signal. This signal is received using the receiving algorithm determined to be optimal.

FIG. 4 is a block diagram of a mobile terminal according to a second embodiment of the present invention, and is a structural example of a mobile terminal (transmission array) using an adaptive array antenna as a transmission antenna. In the drawing, reference numerals 21 to 24 denote transmission units, and 25 denotes a transmission unit.
Is a hybrid, 26 is a reception unit, 27 is a demodulation unit, 28 is an error information detection unit, 29 to 32 are phase and amplitude adjustment circuits, 33
Is a distributor, 34 is a modulator, 35 is a controller, 36 is a program memory, and 37 is a DSP.

FIG. 5 is an example of a signal flow in the second embodiment of FIG. After power on, the adaptive array default receiving system (single antenna in Fig. 4)
Upon receiving a broadcast channel from the base station to all users in the communicable area, the mobile terminal transmits a standby signal for performing position registration to the base station at regular intervals by a default transmission system of the adaptive array. . The base station transmits a signal responding to this to the terminal.

When the transmission power is turned on at the terminal, a data transmission start signal (including transmission media information) is transmitted to the base station by the default control method. The base station obtains the uplink SIR and SNR from the data transmission start signal, and determines the optimal algorithm from the determination data such as the received power and the transmission medium. When the selected optimal algorithm is different from the default, the download data of the algorithm is downloaded to the terminal. The downloaded program is stored in the program memory 36 shown in FIG. When the download program is sent to the DSP 37 (when the program in the DSP is a default program), the program is evacuated to the program memory 36. After finishing this operation, the terminal starts transmitting the information transmission signal. This data is transmitted using the transmission algorithm determined to be optimal.

FIG. 6 is a signal flow of another method in the second embodiment of FIG. After the power is turned on, when the default receiving system of the adaptive array receives a broadcast channel for all users within the communicable area from the base station (in FIG. 4, the antenna is a single antenna), the mobile terminal transmits to the base station. A standby signal for performing location registration is transmitted at regular intervals by a default transmission system. The base station transmits a signal responding to this to the terminal. When the transmission power is turned on at the terminal, a data transmission start signal (including transmission media information) is transmitted to the base station by a default control method. The base station obtains the SIR and SNR of the uplink from the data transmission start signal, obtains the determination data such as the reception power and the transmission medium, and notifies the terminal of the information using the transmission status data signal. Based on this, the terminal determines the optimal algorithm.

When the program of the selected optimum algorithm is different from the default program, a corresponding algorithm download request is transmitted to urge the base station to download. The download program is stored in the program memory 36 shown in FIG. DS
When sending the download program to P37 (when the program in the DSP is the default program), the program is evacuated to the program memory 36. After finishing this operation, the terminal starts transmitting the information transmission signal. This data is transmitted using the transmission algorithm determined to be optimal.

Note that the control unit 14 of FIG. 1 and the control unit 35 of FIG. 4 determine that there is a need to change the algorithm when the communication quality is deteriorated during transmission, and determine the optimal algorithm in the same manner as described above. And set it to request.

Here, the description has been made only for the case of the transmission-only array or the reception-only array as shown in FIGS. 1 and 4, but the present invention is also applicable to the case of both the transmission and reception arrays. In addition, since the transmission algorithm is downloaded, there is an advantage that a newly developed algorithm can be handled.

As described above, by performing communication in accordance with the optimal algorithm, for example, in an environment where interference is small, an algorithm for directing the maximum beam to the communication partner can be applied. If the transmission power is not reduced,
The communication distance can be increased. Further, in an environment where there is a lot of interference, an algorithm that forms a null point in the direction of arrival of the interference wave and reduces the influence of the null point enables communication with less trouble.

[0024]

As described above in detail, according to the present invention, it is possible to contribute to reduction of power consumption, expansion of communication distance, reduction of interference, and the like, and to use a newly developed algorithm. There is.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a receiving array mobile terminal according to a first embodiment of the present invention.

FIG. 2 is an example of a signal flow between a terminal and a base station according to the first embodiment of the present invention.

FIG. 3 is another signal flow example diagram between a terminal and a base station according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of a transmission array mobile terminal according to a second embodiment of the present invention.

FIG. 5 is an example of a signal flow between a terminal and a base station according to a second embodiment of the present invention.

FIG. 6 is an example of a signal flow between a terminal and a base station according to a second embodiment of the present invention;

[Explanation of symbols]

 1, 2, 3, 4 receiving unit 5 hybrid transformer 6 transmitting unit 7 modulating unit 8, 9, 10, 11 phase and amplitude matching circuit 12 combiner 13 demodulating unit 14 error information detecting unit 15 control unit 16 program memory 17 DSP 21, 22, 23, 24 transmitting unit 25 hybrid transformer 26 receiving unit 27 demodulating unit 28 error information detecting unit 29, 30, 31, 32 phase and amplitude matching circuit 33 distributor 34 modulation unit 35 control unit 36 program memory 37 DSP

Claims (4)

[Claims]
1. A mobile communication system in which a plurality of mobile stations provided with an adaptive array antenna receiving means using a plurality of antennas and a base station perform mutual communication, wherein the mobile station adaptively controls the plurality of antennas. Setting means for programmably setting any one of a plurality of control algorithms for controlling, and a reception quality status depending on a signal-to-noise ratio or a signal-to-interference ratio of a received signal to the base station. The base station selects a control algorithm determined to be optimal among the plurality of control algorithms of the mobile station according to the reception quality status notified from the mobile station. And a means for downloading the program of the selected control algorithm to the mobile station, wherein the mobile station updates the reception quality to the base station. A mobile communication system using an adaptive array antenna configured to perform a mutual communication by notifying a station and setting a control algorithm downloaded from the base station in a programmable manner.
2. A mobile communication system in which a plurality of mobile stations provided with an adaptive array antenna receiving means using a plurality of antennas and a base station perform mutual communication, wherein the mobile station adaptively controls the plurality of antennas. A storage unit for storing in advance a list of a plurality of control algorithms for controlling, and an optimum list of the plurality of control algorithms in accordance with a reception quality condition depending on a signal-to-noise ratio or a signal-to-interference ratio of a received signal. Catalog selection means for selecting a list of control algorithms determined to be determined, comprising request issuing means for requesting the base station to download the program of the selected control algorithm to the mobile station, The base station includes a program storage unit that stores a program of the plurality of control algorithms, and a control unit that responds to a request from the mobile station. Means for reading a program of the algorithm from the storage means and downloading the program to the mobile station, wherein the mobile station comprises an adaptive array antenna configured to perform mutual communication according to a control algorithm program downloaded from the base station. Mobile communication system used.
3. A mobile communication system in which a plurality of mobile stations provided with an adaptive array antenna transmitting means using a plurality of antennas and a base station communicate with each other, wherein the mobile station adaptively controls the plurality of antennas. Setting means capable of setting any one of a plurality of control algorithms for control in a programmable manner, wherein the base station depends on a signal-to-noise ratio or a signal-to-interference ratio of a signal received from the mobile station. Depending on the reception quality situation,
Selecting means for selecting a control algorithm determined to be optimal among the plurality of control algorithms of the mobile station, and means for downloading a program of the selected control algorithm to the mobile station, the mobile station comprising: A mobile communication system using an adaptive array antenna configured to perform a mutual communication by setting a control algorithm downloaded from a base station in a programmable manner.
4. A mobile communication system in which a plurality of mobile stations provided with an adaptive array antenna transmitting means using a plurality of antennas and a base station communicate with each other, wherein the mobile station adaptively controls the plurality of antennas. Storage means for storing a list of a plurality of control algorithms for controlling, according to a signal-to-noise ratio or a signal-to-interference ratio of a received signal of the base station transmitted from the base station, according to a state of reception quality. Selecting means for selecting a control algorithm determined to be optimum among the plurality of stored control algorithms, and requesting the base station to download a program of the selected control algorithm to the mobile station. A request issuing unit, wherein the base station stores a program of a plurality of control algorithms of the mobile station; A reception quality notifying unit that notifies the mobile station of the status of the reception quality of the base station; and a unit that downloads a program of a control algorithm according to a request from the mobile station to the mobile station. A mobile communication system using an adaptive array antenna, wherein the stations perform mutual communication according to a control algorithm program downloaded from the base station.
JP10044245A 1998-02-12 1998-02-12 Mobile communication system using adaptive array antenna Pending JPH11234197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10044245A JPH11234197A (en) 1998-02-12 1998-02-12 Mobile communication system using adaptive array antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10044245A JPH11234197A (en) 1998-02-12 1998-02-12 Mobile communication system using adaptive array antenna

Publications (1)

Publication Number Publication Date
JPH11234197A true JPH11234197A (en) 1999-08-27

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Family Applications (1)

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Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410871B (en) * 1999-12-22 2003-08-25 Siemens Ag Oesterreich Method for evaluating the receiving signals from n antennas of a mobile radio receiver and mobile radio receiver for implementing the method
JPWO2002047289A1 (en) * 2000-12-04 2004-04-08 三菱電機株式会社 Combining receiving method and combining receiving device
JP2004511142A (en) * 2000-09-29 2004-04-08 アレイコム・インコーポレーテッド Mode switching in adaptive array communication systems
JP2005311740A (en) * 2004-04-22 2005-11-04 Brother Ind Ltd Radio tag communication device
KR100734347B1 (en) 2000-09-01 2007-07-03 엘지전자 주식회사 The Method for Cancelling Interference Signal in CDMA System with Antenna Array
WO2007139063A1 (en) * 2006-05-29 2007-12-06 Kyocera Corporation Base station device, control method of base station device, receiving device, adaptive algorism control method, wireless communication device and wireless communication method
US7583983B2 (en) 2002-09-20 2009-09-01 Kyocera Corporation Adaptive array wireless communication apparatus, reception level display method, reception level adjusting method, reception level display program, and reception level adjusting program

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410871B (en) * 1999-12-22 2003-08-25 Siemens Ag Oesterreich Method for evaluating the receiving signals from n antennas of a mobile radio receiver and mobile radio receiver for implementing the method
KR100734347B1 (en) 2000-09-01 2007-07-03 엘지전자 주식회사 The Method for Cancelling Interference Signal in CDMA System with Antenna Array
JP2004511142A (en) * 2000-09-29 2004-04-08 アレイコム・インコーポレーテッド Mode switching in adaptive array communication systems
JPWO2002047289A1 (en) * 2000-12-04 2004-04-08 三菱電機株式会社 Combining receiving method and combining receiving device
JP4818568B2 (en) * 2000-12-04 2011-11-16 三菱電機株式会社 Composite reception method and composite reception apparatus
US7583983B2 (en) 2002-09-20 2009-09-01 Kyocera Corporation Adaptive array wireless communication apparatus, reception level display method, reception level adjusting method, reception level display program, and reception level adjusting program
US8024002B2 (en) 2002-09-20 2011-09-20 Kyocera Corporation Adaptive array wireless communication apparatus, reception level display method, reception level adjusting method, reception level display program and reception level adjusting program
JP2005311740A (en) * 2004-04-22 2005-11-04 Brother Ind Ltd Radio tag communication device
WO2007139063A1 (en) * 2006-05-29 2007-12-06 Kyocera Corporation Base station device, control method of base station device, receiving device, adaptive algorism control method, wireless communication device and wireless communication method
US8374132B2 (en) 2006-05-29 2013-02-12 Kyocera Corporation Base station device, method for controlling base station device, receiving device, adaptation algorithm control method, radio communication device, and radio communication method

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