公开(公告)号：US06989721B2

公开(公告)日：2006-01-24

申请号：US10803699

申请日：2004-03-18

申请人： Takeshi Toda ,  Yuuta Nakaya ,  Yasuyuki Oishi ,  Kaoru Yokoo ,  Shinsuke Hara ,  Yuji Irie

发明人： Takeshi Toda ,  Yuuta Nakaya ,  Yasuyuki Oishi ,  Kaoru Yokoo ,  Shinsuke Hara ,  Yuji Irie

IPC分类号： H03H21/00 ,  H03H7/40

CPC分类号： G05B13/024

摘要： An adaptive controller adaptively controls a plurality of variable high frequency devices. A calculation part calculates a scalar function value by using a signal varied in accordance with impedances of the variable high frequency devices, a reference signal, and a predetermined scalar function. An impedance variation part creates a signal that sequentially varies the impedances of the variable high frequency devices. A determination part determines, when the impedance of one of the variable high frequency devices is varied, whether a direction in which the scalar function value is varied is in a predetermined sloped direction. The impedance variation part includes a first variation part that, when a decision result in the determination part is in the predetermined direction, creates a signal that further varies the impedance of the one of the variable high frequency devices in the predetermined sloped direction. The impedance variation part also includes a second variation part that, when the decision result in the determination part is not in the predetermined sloped direction, creates one of a signal that varies the impedance of the one of the variable high frequency devices in an oppositely sloped direction and a signal that varies the impedance of another one of the variable high frequency devices.

摘要翻译： 自适应控制器自适应地控制多个可变高频装置。 计算部分通过使用根据可变高频装置的阻抗变化的信号，参考信号和预定标量函数来计算标量函数值。 阻抗变化部分产生顺序改变可变高频装置的阻抗的信号。 确定部件当改变可变高频装置之一的阻抗时，确定标量函数值的变化方向是否处于预定的倾斜方向。 阻抗变化部包括第一变化部，当判定部的判定结果为预定方向时，产生进一步改变预定倾斜方向上的一个可变高频部的阻抗的信号。 阻抗变化部还包括第二变化部，当判定部不是预定倾斜方向的判定结果时，产生使相对倾斜的变高频装置的阻抗变化的信号 方向和改变另一个可变高频装置的阻抗的信号。

公开(公告)号：US07379759B2

公开(公告)日：2008-05-27

申请号：US11354792

申请日：2006-02-15

申请人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

发明人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

IPC分类号： H04M1/00

CPC分类号： H01Q3/26 ,  H01Q3/44 ,  H01Q21/245 ,  H04B7/043 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0848 ,  H04B7/0854

摘要： A MIMO wireless communication system and wireless communication apparatuses are disclosed that increase the practically usable communication channel capacity in the Shannon channel capacity that determines the ratio of maximum signal transmission speed to frequency. Each wireless communication apparatus includes antenna units that transmit and receive radio frequency signals, and a weight controlling unit that provides weights with respect to the antenna units. The antenna units are formed by adaptive array antenna units that can change the directivity by varying weights with respect to antenna elements. The weight controlling unit includes an eigenvalue calculating unit that calculates the eigenvalues of a matrix HH* (H being a channel matrix), an inverse calculation unit that calculates such a channel matrix H′ as to have all eigenvalues within a predetermined range that includes the average value of the calculated eigenvalues, and a directivity adjusting unit that adjusts the adaptive array antenna directivity so that the current channel matrix H approaches the calculated channel matrix H′.

摘要翻译： 公开了一种MIMO无线通信系统和无线通信装置，其增加了确定最大信号传输速度与频率的比率的香农信道容量中实际可用的通信信道容量。 每个无线通信装置包括发送和接收射频信号的天线单元，以及提供关于天线单元的权重的权重控制单元。 天线单元由自适应阵列天线单元形成，其可以通过相对于天线元件改变权重来改变方向性。 权重控制单元包括计算矩阵HH *（H为信道矩阵）的特征值的特征值计算单元，计算这样的信道矩阵H'以使所有特征值在包括 计算的特征值的平均值，以及调整自适应阵列天线方向性使得当前信道矩阵H接近计算的信道矩阵H'的方向性调整单元。

公开(公告)号：US20050020310A1

公开(公告)日：2005-01-27

申请号：US10801426

申请日：2004-03-16

申请人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

发明人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

IPC分类号： H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/10 ,  H04B7/26 ,  H04Q7/20

CPC分类号： H01Q3/26 ,  H01Q3/44 ,  H01Q21/245 ,  H04B7/043 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0848 ,  H04B7/0854

摘要： A MIMO wireless communication system and wireless communication apparatuses are disclosed that increase the practically usable communication channel capacity in the Shannon channel capacity that determines the ratio of maximum signal transmission speed to frequency. Each wireless communication apparatus includes antenna units that transmit and receive radio frequency signals, and a weight controlling unit that provides weights with respect to the antenna units. The antenna units are formed by adaptive array antenna units that can change the directivity by varying weights with respect to antenna elements. The weight controlling unit includes an eigenvalue calculating unit that calculates the eigenvalues of a matrix HH* (H being a channel matrix), an inverse calculation unit that calculates such a channel matrix H′ as to have all eigenvalues within a predetermined range that includes the average value-of the calculated eigenvalues, and a directivity adjusting unit that adjusts the adaptive array antenna directivity so that the current channel matrix H approaches the calculated channel matrix H′.

摘要翻译： 公开了一种MIMO无线通信系统和无线通信装置，其增加了确定最大信号传输速度与频率的比率的香农信道容量中实际可用的通信信道容量。 每个无线通信装置包括发送和接收射频信号的天线单元，以及提供关于天线单元的权重的权重控制单元。 天线单元由自适应阵列天线单元形成，其可以通过相对于天线元件改变权重来改变方向性。 权重控制单元包括计算矩阵HH *（H为信道矩阵）的特征值的特征值计算单元，计算这样的信道矩阵H'以使所有特征值在包括 计算的特征值的平均值，以及调整自适应阵列天线方向性使得当前信道矩阵H接近计算的信道矩阵H'的方向性调整单元。

公开(公告)号：US20060131414A1

公开(公告)日：2006-06-22

申请号：US11354792

申请日：2006-02-15

申请人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

发明人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

IPC分类号： G06K7/08

CPC分类号： H01Q3/26 ,  H01Q3/44 ,  H01Q21/245 ,  H04B7/043 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0848 ,  H04B7/0854

摘要： A MIMO wireless communication system and wireless communication apparatuses are disclosed that increase the practically usable communication channel capacity in the Shannon channel capacity that determines the ratio of maximum signal transmission speed to frequency. Each wireless communication apparatus includes antenna units that transmit and receive radio frequency signals, and a weight controlling unit that provides weights with respect to the antenna units. The antenna units are formed by adaptive array antenna units that can change the directivity by varying weights with respect to antenna elements. The weight controlling unit includes an eigenvalue calculating unit that calculates the eigenvalues of a matrix HH* (H being a channel matrix), an inverse calculation unit that calculates such a channel matrix H′ as to have all eigenvalues within a predetermined range that includes the average value of the calculated eigenvalues, and a directivity adjusting unit that adjusts the adaptive array antenna directivity so that the current channel matrix H approaches the calculated channel matrix H′.

摘要翻译： 公开了一种MIMO无线通信系统和无线通信装置，其增加了确定最大信号传输速度与频率的比率的香农信道容量中实际可用的通信信道容量。 每个无线通信装置包括发送和接收射频信号的天线单元，以及提供关于天线单元的权重的权重控制单元。 天线单元由自适应阵列天线单元形成，其可以通过相对于天线元件改变权重来改变方向性。 权重控制单元包括计算矩阵HH *（H为信道矩阵）的特征值的特征值计算单元，计算这样的信道矩阵H'以使所有特征值在包括 计算的特征值的平均值，以及调整自适应阵列天线方向性使得当前信道矩阵H接近计算的信道矩阵H'的方向性调整单元。

公开(公告)号：US07035672B2

公开(公告)日：2006-04-25

申请号：US10801426

申请日：2004-03-16

申请人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

发明人： Yuuta Nakaya ,  Takeshi Toda ,  Yasuyuki Oishi ,  Kaoru Yokoo

IPC分类号： H04M1/00

CPC分类号： H01Q3/26 ,  H01Q3/44 ,  H01Q21/245 ,  H04B7/043 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0848 ,  H04B7/0854

摘要： A MIMO wireless communication system and wireless communication apparatuses are disclosed that increase the practically usable communication channel capacity in the Shannon channel capacity that determines the ratio of maximum signal transmission speed to frequency. Each wireless communication apparatus includes antenna units that transmit and receive radio frequency signals, and a weight controlling unit that provides weights with respect to the antenna units. The antenna units are formed by adaptive array antenna units that can change the directivity by varying weights with respect to antenna elements. The weight controlling unit includes an eigenvalue calculating unit that calculates the eigenvalues of a matrix HH* (H being a channel matrix), an inverse calculation unit that calculates such a channel matrix H′ as to have all eigenvalues within a predetermined range that includes the average value of the calculated eigenvalues, and a directivity adjusting unit that adjusts the adaptive array antenna directivity so that the current channel matrix H approaches the calculated channel matrix H′.

公开(公告)号：US07512384B2

公开(公告)日：2009-03-31

申请号：US11044628

申请日：2005-01-27

申请人： Takeshi Toda ,  Takeshi Takano ,  Yuuta Nakaya ,  Yasuyuki Oishi

发明人： Takeshi Toda ,  Takeshi Takano ,  Yuuta Nakaya ,  Yasuyuki Oishi

IPC分类号： H03C1/52

CPC分类号： H01Q3/26 ,  H01Q3/2605 ,  H01Q3/36 ,  H01Q9/0442 ,  H04B1/18

摘要： A control unit and a control method are disclosed. First and second changing units change impedances of two or more first and second components within predetermined first and second ranges, respectively, the first and the second components affecting an output signal. An evaluation function value calculating unit calculates an evaluation function value that is dependent on the impedances of the first and the second components. A gradient vector calculating unit calculates a gradient vector based on the difference between the evaluation function values before and after the impedance change of the second components. Based on the gradient vector, impedance of each of the first components is changed such that the evaluation function value takes a desired value.

摘要翻译： 公开了一种控制单元和控制方法。 第一和第二改变单元分别在预定的第一和第二范围内改变两个或更多个第一和第二分量的阻抗，第一和第二分量影响输出信号。 评估函数值计算单元计算依赖于第一和第二分量的阻抗的评估函数值。 梯度矢量计算单元基于第二分量的阻抗变化前后的评价函数值之差来计算梯度矢量。 基于梯度矢量，改变每个第一分量的阻抗，使得评估函数值取所需值。

公开(公告)号：US20050146387A1

公开(公告)日：2005-07-07

申请号：US11044628

申请日：2005-01-27

申请人： Takeshi Toda ,  Takeshi Takano ,  Yuuta Nakaya ,  Yasuyuki Oishi

发明人： Takeshi Toda ,  Takeshi Takano ,  Yuuta Nakaya ,  Yasuyuki Oishi

IPC分类号： H01Q3/26 ,  H01Q3/36 ,  H01Q9/04 ,  H03L1/00

CPC分类号： H01Q3/26 ,  H01Q3/2605 ,  H01Q3/36 ,  H01Q9/0442 ,  H04B1/18

摘要： A control unit and a control method are disclosed. First and second changing units change impedances of two or more first and second components within predetermined first and second ranges, respectively, the first and the second components affecting an output signal. An evaluation function value calculating unit calculates an evaluation function value that is dependent on the impedances of the first and the second components. A gradient vector calculating unit calculates a gradient vector based on the difference between the evaluation function values before and after the impedance change of the second components. Based on the gradient vector, impedance of each of the first components is changed such that the evaluation function value takes a desired value.

摘要翻译： 公开了一种控制单元和控制方法。 第一和第二改变单元分别在预定的第一和第二范围内改变两个或更多个第一和第二分量的阻抗，第一和第二分量影响输出信号。 评估函数值计算单元计算依赖于第一和第二分量的阻抗的评估函数值。 梯度矢量计算单元基于第二分量的阻抗变化前后的评价函数值之差来计算梯度矢量。 基于梯度矢量，改变每个第一分量的阻抗，使得评估函数值取所需值。

公开(公告)号：US20050184906A1

公开(公告)日：2005-08-25

申请号：US10868858

申请日：2004-06-17

申请人： Yuuta Nakaya ,  Takeshi Toda

发明人： Yuuta Nakaya ,  Takeshi Toda

IPC分类号： H01Q3/36 ,  G01S3/16 ,  H01Q3/00 ,  H01Q3/26 ,  H01Q3/28 ,  H01Q3/42 ,  H04B7/08 ,  H04B7/10

CPC分类号： H01Q3/2605

摘要： An array antenna system comprises an array antenna unit including multiple antenna elements and multiple phase shifters for setting weighting coefficients of the associated antenna elements; and a weight controller that generates and outputs a control signal for adjusting the weighting coefficient for each of the antenna elements, using a known signal received at each of the antenna elements. The weight controller has a channel impulse response estimation unit that estimates a channel impulse response for each of the antenna elements based on a linear combination of a first received signal obtained from the known signal when a first set of weighting coefficients is set for the antenna elements and a second received signal obtained from the known signal when a second set of weighting coefficients is set for the antenna elements; and an output unit that outputs the control signal based on the estimated channel impulse responses.

摘要翻译： 阵列天线系统包括：包括多个天线元件的阵列天线单元和用于设置相关天线元件的加权系数的多个移相器; 以及权重控制器，其使用在每个天线元件处接收的已知信号来生成并输出用于调整每个天线元件的加权系数的控制信号。 权重控制器具有信道脉冲响应估计单元，当对天线元件设置第一组加权系数时，基于从已知信号获得的第一接收信号的线性组合来估计每个天线元件的信道脉冲响应 以及当为天线元件设置第二组加权系数时，从已知信号获得的第二接收信号; 以及输出单元，其基于估计的信道脉冲响应来输出控制信号。

公开(公告)号：US07389086B2

公开(公告)日：2008-06-17

申请号：US10746696

申请日：2003-12-24

申请人： Takeshi Toda ,  Yuuta Nakaya

发明人： Takeshi Toda ,  Yuuta Nakaya

IPC分类号： H04B7/185 ,  H04B1/00

CPC分类号： H04B7/0848 ,  H04B7/0851 ,  H04B7/0854

摘要： An adaptive array antenna controller is disclosed that adaptively controls weighting coefficients of multiple antenna elements of an array antenna based on a digital signal outputted from an analog-to-digital converter receiving a weighted analog signal received from the array antenna. The controller includes an impulse response measuring device for obtaining impulse responses, based on correlation calculation of the digital signal and a known signal having a predetermined pattern; an impulse response generator for extracting path components existing within a predetermined time duration from among plural path components included in the impulse responses and generating desired impulse responses; a reference signal generator for forming a reference signal having a desired pattern, based on convolution calculation of the desired impulse responses and the known signal; and an adaptive controller for adjusting the weighting coefficients, based on the digital signal and the reference signal.

摘要翻译： 公开了一种自适应阵列天线控制器，其基于从接收从阵列天线接收的加权模拟信号的模数转换器输出的数字信号，自适应地控制阵列天线的多个天线元件的加权系数。 所述控制器包括：脉冲响应测量装置，用于根据数字信号的相关计算和具有预定模式的已知信号获得脉冲响应; 脉冲响应发生器，用于从包括在所述脉冲响应中的多个路径分量中提取在预定持续时间内存在的路径分量并产生期望的脉冲响应; 参考信号发生器，用于基于期望脉冲响应的卷积计算和已知信号形成具有所需图案的参考信号; 以及基于数字信号和参考信号来调整加权系数的自适应控制器。

公开(公告)号：US07126531B2

公开(公告)日：2006-10-24

申请号：US10868858

申请日：2004-06-17

申请人： Yuuta Nakaya ,  Takeshi Toda

发明人： Yuuta Nakaya ,  Takeshi Toda

IPC分类号： H01Q3/00

CPC分类号： H01Q3/2605

摘要： An array antenna system comprises an array antenna unit including multiple antenna elements and multiple phase shifters for setting weighting coefficients of the associated antenna elements; and a weight controller that generates and outputs a control signal for adjusting the weighting coefficient for each of the antenna elements, using a known signal received at each of the antenna elements. The weight controller has a channel impulse response estimation unit that estimates a channel impulse response for each of the antenna elements based on a linear combination of a first received signal obtained from the known signal when a first set of weighting coefficients is set for the antenna elements and a second received signal obtained from the known signal when a second set of weighting coefficients is set for the antenna elements; and an output unit that outputs the control signal based on the estimated channel impulse responses.

摘要翻译： 阵列天线系统包括：包括多个天线元件的阵列天线单元和用于设置相关天线元件的加权系数的多个移相器; 以及权重控制器，其使用在每个天线元件处接收的已知信号来生成并输出用于调整每个天线元件的加权系数的控制信号。 权重控制器具有信道脉冲响应估计单元，当对天线元件设置第一组加权系数时，基于从已知信号获得的第一接收信号的线性组合来估计每个天线元件的信道脉冲响应 以及当为天线元件设置第二组加权系数时，从已知信号获得的第二接收信号; 以及输出单元，其基于估计的信道脉冲响应来输出控制信号。