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1. 发明授权

US06642888B2 Radio-wave arrival-direction estimating apparatus and directional variable transceiver 有权
公开(公告)号：US06642888B2
公开(公告)日：2003-11-04
申请号：US10020477
申请日：2001-12-12
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
IPC分类号： G01S502
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring an angle sweep for arrival angle estimation of MUSIC method or the like.

2. 发明授权

US06836245B2 Radio-wave arrival-direction estimating apparatus and directional variable transceiver 有权
标题翻译：无线电波到达方向估计装置和方向可变收发器
公开(公告)号：US06836245B2
公开(公告)日：2004-12-28
申请号：US10635411
申请日：2003-08-06
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
IPC分类号： G01S502
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring an angle sweep for arrival angle estimation of MUSIC method or the like.

3. 发明授权

US06897807B2 Radio-wave arrival-direction estimating apparatus and directional variable transceiver 有权
标题翻译：无线电波到达方向估计装置和方向可变收发器
公开(公告)号：US06897807B2
公开(公告)日：2005-05-24
申请号：US10817978
申请日：2004-04-05
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
IPC分类号： G01S3/74 , G06K9/00 , G01S5/02
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring all angle sweep for arrival angle estimation of MUSIC method or the like.
摘要翻译：无线电波到达方向装置通过天线元件之间的相关计算来计算接收信号的相关矩阵，并且通过特征值因子分解来计算其每行或列是属于噪声特征空间的特征向量的噪声空间本征矩阵相关矩阵。该装置还使用cholesky因式分解将包括噪声空间本征矩阵的乘积和其共轭和转置矩阵的矩阵分解为上或下三角矩阵。该装置使用导出的上下三角矩阵来计算到达角度评估函数的预定角度范围内的角度评估值，并且基于计算结果确定到达角度。在可能的角度范围内的计算量可以在不需要对MUSIC方法等的到达角度估计进行所有角度扫描的算法中而不会导致到达方向的精度降低而降低。

4. 发明申请

US20110181471A1 ADAPTIVE ANTENNA RADIO COMMUNICATION DEVICE 有权
标题翻译：自适应天线无线电通信设备
公开(公告)号：US20110181471A1
公开(公告)日：2011-07-28
申请号：US13079415
申请日：2011-04-04
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takakusaki , Shoji Miyamoto
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takakusaki , Shoji Miyamoto
IPC分类号： G01S3/14
CPC分类号： G01S3/043 , G01S3/14 , H04B7/086 , H04L27/2601
摘要： A device for estimating a direction-of-arrival of a radio wave, the device comprising an array antenna including a plurality of antenna elements for receiving a high frequency signal, a demultiplexer for demultiplexing the received high frequency signal for each of the plurality of antenna elements to generate a plurality of frequency component signals and a direction estimating unit for estimating the direction-of-arrival of the radio wave by using two or more of the plurality of frequency component signals which are contiguous in a frequency direction.
摘要翻译：一种用于估计无线电波的到达方向的装置，该装置包括：阵列天线，包括用于接收高频信号的多个天线元件;解复用器，用于对接收到的多个天线中的每个天线的高频信号进行解复用用于生成多个频率分量信号的单元;以及方向估计单元，用于通过使用在频率方向上连续的多个频率分量信号中的两个或更多个来估计无线电波的到达方向。

5. 发明授权

US07593317B2 Radio base station apparatus 有权
标题翻译：无线基站装置
公开(公告)号：US07593317B2
公开(公告)日：2009-09-22
申请号：US10503010
申请日：2003-08-01
申请人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Keiji Takakusaki , Shoji Miyamoto
发明人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Keiji Takakusaki , Shoji Miyamoto
IPC分类号： H04J11/00
CPC分类号： H01Q3/2605 , H01Q3/267 , H04B7/0617 , H04B7/086 , H04B17/10 , H04B17/12 , H04B17/18 , H04B17/20 , H04B17/21 , H04L1/06 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： A transmission weight computing section computes a transmission weight for directional transmission using an OFDM signal. A transmission correcting value memory section stores one correcting value for correcting the transmission weight for each sub-carrier of an OFDM signal or each band gathering a plurality of sub-carriers. A transmission weight correcting section corrects the transmission weight by the correcting value. A transmitting branch weights transmission data by a transmission weight outputted from the transmission weight correcting section on a sub-carrier-by-sub-carrier basis and delivers it to an antenna.
摘要翻译：传输权重计算部分使用OFDM信号来计算定向传输的传输权重。发送校正值存储部存储用于校正OFDM信号的每个子载波的发送权重或收集多个子载波的每个频带的一个校正值。发送权重校正部通过校正值来校正发送权重。发送分支通过从子载波子载波基础上从发送加权校正部分输出的发送权重对发送数据进行加权，并将其发送到天线。

6. 发明授权

US07333056B2 Adaptive antenna radio communication device 有权
标题翻译：自适应天线无线电通信设备
公开(公告)号：US07333056B2
公开(公告)日：2008-02-19
申请号：US10524253
申请日：2003-09-26
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takakusaki , Shoji Miyamoto
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takakusaki , Shoji Miyamoto
IPC分类号： G01S5/02
CPC分类号： G01S3/043 , G01S3/14 , H04B7/086 , H04L27/2601
摘要： An adaptive antenna radio communication device comprises a divided band direction estimating unit (4) for estimating the direction by calculating the cross correlations between a pilot signal and sub-carrier signals of the respective divided bands received by an array antenna (1) and calculating a spatial profile from correlation matrices determined by combining the correlation values between antenna elements of the different sub-carriers according to the output of the cross correlation calculation; a divided band array weight creating unit (5) for creating a weight of a receive array having a directional beam in the direction of estimation for each divided band; and a sub-carrier directivity creating unit (6) for creating a directivity by multiplication-combining the created receive array weight with the corresponding sub-carrier signal.
摘要翻译：一种自适应天线无线电通信装置包括：分频带方向估计单元，用于通过计算由阵列天线（1）接收的各个分频带的导频信号和副载波信号之间的互相关，来估计方向，并计算通过根据互相关计算的输出组合不同子载波的天线元件之间的相关值确定的相关矩阵的空间分布; 分割带阵列权重创建单元（5），用于在每个分割频带的方向上产生具有定向波束的接收阵列的权重; 以及子载波方向性创建单元（6），用于通过将创建的接收阵列权重与相应的副载波信号相乘合成来产生方向性。

7. 发明申请

US20120213131A1 WIRELESS COMMUNICATION APPARATUS 有权
标题翻译：无线通信设备
公开(公告)号：US20120213131A1
公开(公告)日：2012-08-23
申请号：US13459884
申请日：2012-04-30
申请人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Yoichi Nakagawa , Shinichiro Takabayashi
发明人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Yoichi Nakagawa , Shinichiro Takabayashi
IPC分类号： H04W24/00 , H04J3/00
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： Wireless communication apparatus adopting a time division duplex system for transmission and reception using plural antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means detects channel information based on reception output of N reception circuits having a one-to-one correspondence with N antennas. Correction value detection means finds a correction value for correcting deviation occurring between each of N transmission circuits and each of the N reception circuits based on the channel information. A wireless communication apparatus transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means of the wireless communication apparatus detects the correction value using the correction signal.
摘要翻译：采用使用多个天线进行发送和接收的时分双工系统的无线通信装置，使用通信信号检测和校正发送和接收电路之间发生的幅度和相位的偏差。信道估计装置根据与N个天线一一对应的N个接收电路的接收输出来检测信道信息。校正值检测装置根据频道信息找到校正发生在N个发送电路和N个接收电路中的每一个之间的偏差的校正值。无线通信装置向无线通信装置进行通信的基站发送已知的信号（训练信号）。基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。无线通信装置的校正值检测装置使用校正信号来检测校正值。

8. 发明申请

US20100118745A1 WIRELESS COMMUNICATION APPARATUS 有权
标题翻译：无线通信设备
公开(公告)号：US20100118745A1
公开(公告)日：2010-05-13
申请号：US12687453
申请日：2010-01-14
申请人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Yoichi Nakagawa , Shinichiro Takabayashi
发明人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Yoichi Nakagawa , Shinichiro Takabayashi
IPC分类号： H04J3/00
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means 105 detects channel information based on reception output of reception circuits 104-1 to 104-N provided in a one-to-one correspondence with a plurality of antennas 101-1 to 101-N. Correction value detection means 110 finds a correction value for correcting deviation occurring between each of transmission circuits 103-1 to 103-N and each of the reception circuits 104-1 to 104-N based on the channel information. A wireless communication apparatus 100 transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means 110 of the wireless communication apparatus 100 detects the correction value using the correction signal (probe signal).
摘要翻译：在采用使用多个天线执行发送和接收的时分双工系统的无线通信装置中，使用通信信号来检测和校正发送和接收电路之间发生的振幅和相位的偏差。信道估计装置105基于与多个天线101-1至101-N一一对应地提供的接收电路104-1至104-N的接收输出来检测信道信息。修正值检测单元110基于通道信息，求出用于校正发送电路103-1〜103-N和各接收电路104-1〜104-N的偏差的校正值。无线通信装置100向无线通信装置进行通信的基站发送已知的信号（训练信号）。基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。无线通信装置100的校正值检测装置110使用校正信号（探测信号）来检测校正值。

9. 发明申请

US20070183545A1 Wireless communication apparatus 有权
标题翻译：无线通信装置
公开(公告)号：US20070183545A1
公开(公告)日：2007-08-09
申请号：US10598441
申请日：2005-08-02
申请人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Yoichi Nakagawa , Shinichiro Takabayashi
发明人： Yasuaki Yuda , Takaaki Kishigami , Takashi Fukagawa , Yoichi Nakagawa , Shinichiro Takabayashi
IPC分类号： H04B7/10
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means 105 detects channel information based on reception output of reception circuits 104-1 to 104-N provided in a one-to-one correspondence with a plurality of antennas 101-1 to 101-N. Correction value detection means 110 finds a correction value for correcting deviation occurring between each of transmission circuits 103-1 to 103-N and each of the reception circuits 104-1 to 104-N based on the channel information. A wireless communication apparatus 100 transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means 110 of the wireless communication apparatus 100 detects the correction value using the correction signal (probe signal).
摘要翻译：在采用使用多个天线执行发送和接收的时分双工系统的无线通信装置中，使用通信信号来检测和校正发送和接收电路之间发生的振幅和相位的偏差。信道估计装置105基于与多个天线101-1至101-N一一对应地提供的接收电路104-1至104N的接收输出来检测信道信息。校正值检测单元110根据通道信息，求出用于校正发送电路103-1〜103-N与各接收电路104-1〜104-N之间的偏差的校正值。无线通信装置100向无线通信装置进行通信的基站发送已知的信号（训练信号）。基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。无线通信装置100的校正值检测装置110使用校正信号（探测信号）来检测校正值。

10. 发明授权

US08599071B2 Adaptive antenna radio communication device 有权
标题翻译：自适应天线无线电通信设备
公开(公告)号：US08599071B2
公开(公告)日：2013-12-03
申请号：US13079415
申请日：2011-04-04
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takakusaki , Shoji Miyamoto
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takakusaki , Shoji Miyamoto
IPC分类号： G01S3/14 , G01S3/04
CPC分类号： G01S3/043 , G01S3/14 , H04B7/086 , H04L27/2601
摘要： A device for estimating a direction-of-arrival of a radio wave, the device comprising an array antenna including a plurality of antenna elements for receiving a high frequency signal, a demultiplexer for demultiplexing the received high frequency signal for each of the plurality of antenna elements to generate a plurality of frequency component signals and a direction estimating unit for estimating the direction-of-arrival of the radio wave by using two or more of the plurality of frequency component signals which are contiguous in a frequency direction.
摘要翻译：一种用于估计无线电波的到达方向的装置，该装置包括：阵列天线，包括用于接收高频信号的多个天线元件;解复用器，用于对接收到的多个天线中的每个天线的高频信号进行解复用用于生成多个频率分量信号的单元;以及方向估计单元，用于通过使用在频率方向上连续的多个频率分量信号中的两个或更多个来估计无线电波的到达方向。

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