公开(公告)号：US08064844B2

公开(公告)日：2011-11-22

申请号：US12324914

申请日：2008-11-28

申请人： Atsushi Honda ,  Kaoru Yokoo ,  Yasuyuki Oishi ,  Yoji Ohashi

发明人： Atsushi Honda ,  Kaoru Yokoo ,  Yasuyuki Oishi ,  Yoji Ohashi

IPC分类号： H04B1/44 ,  H03G3/00

CPC分类号： H04B1/04 ,  H04B1/44

摘要： In a wireless communication apparatus in a time division duplex system, a transmission signal generation unit generates a transmission signal. A power amplifying device amplifies the generated transmission signal. A control signal generation device generates a drain voltage control signal for control of the drain voltage of the power amplifying device, and a gate voltage control signal for control of the gate voltage of the power amplifying device. The switch unit switches off the drain power supply of the power amplifying device during reception in the time division duplex system according to the drain voltage control signal. In addition, the power amplifying device sets a higher gate voltage during reception in the time division duplex system higher than during transmission according to the gate voltage control signal.

摘要翻译： 在时分双工系统中的无线通信装置中，发送信号生成部生成发送信号。 功率放大装置放大产生的发送信号。 控制信号生成装置生成用于控制功率放大装置的漏极电压的漏极电压控制信号，以及用于控制功率放大装置的栅极电压的栅极电压控制信号。 开关单元根据漏极电压控制信号在时分双工系统的接收期间关断功率放大装置的漏极电源。 此外，功率放大装置在时分双工系统的接收期间根据栅极电压控制信号设置比传输期间更高的栅极电压。

公开(公告)号：US08792935B2

公开(公告)日：2014-07-29

申请号：US11490309

申请日：2006-07-21

申请人： Kaoru Yokoo ,  Manabu Kai

发明人： Kaoru Yokoo ,  Manabu Kai

IPC分类号： H04M1/00 ,  H04B1/46 ,  H04W4/00 ,  H04H20/67

CPC分类号： H04B1/406

摘要： A mobile communication terminal used in a mobile communication system providing mobile communicating service in a first frequency band is disclosed. The mobile communication terminal comprises a first signal processing circuit for processing signals for the mobile communication service; a second signal processing circuit for processing signals for radio tag communicating in a second frequency band; and an antenna commonly used by the first and second signal processing circuits. The impedance of the antenna is matched with the first signal processing circuit in the first frequency band and matched with the second signal processing circuit in the second frequency band.

摘要翻译： 公开了在第一频带中提供移动通信服务的移动通信系统中使用的移动通信终端。 移动通信终端包括用于处理用于移动通信业务的信号的第一信号处理电路; 用于处理在第二频带中进行无线电标签通信的信号的第二信号处理电路; 以及由第一和第二信号处理电路共同使用的天线。 天线的阻抗与第一频带中的第一信号处理电路相匹配，并与第二频带中的第二信号处理电路相匹配。

公开(公告)号：US08355366B2

公开(公告)日：2013-01-15

申请号：US12714071

申请日：2010-02-26

申请人： Kaoru Yokoo

发明人： Kaoru Yokoo

IPC分类号： H04W4/00

CPC分类号： H04W40/00 ,  H04L45/42 ,  H04W84/22 ,  H04W88/04

摘要： A wireless communications node, being included in a multi-hop route starting from a source node and terminating at a destination node, has a receiving part configured to receive signals including transmission data prepared by the source node and transferring the received signals to a succeeding node, a preparing part configured to prepare source node data including at least identification data of the source node based on a predetermined portion of the transmission data, and a reporting part configured to report the source node data and relay data to a management node that manages cost data of plural nodes included in an ad hoc network. The relay data include the cost data and station data including at least identification data of the wireless communications node.

摘要翻译： 包括在从源节点开始并终止于目的地节点的多跳路由中的无线通信节点具有接收部分，被配置为接收包括由源节点准备的传输数据的信号，并将接收到的信号传送到后续节点 准备部件，被配置为基于所述传输数据的预定部分来准备至少包括所述源节点的标识数据的源节点数据;以及报告部，被配置为将所述源节点数据和中继数据报告给管理成本的管理节点 包括在自组织网络中的多个节点的数据。 中继数据包括至少包括无线通信节点的识别数据的成本数据和站数据。

公开(公告)号：US08310989B2

公开(公告)日：2012-11-13

申请号：US12714071

申请日：2010-02-26

申请人： Kaoru Yokoo

发明人： Kaoru Yokoo

IPC分类号： H04W4/00

摘要： A wireless communications node, being included in a multi-hop route starting from a source node and terminating at a destination node, has a receiving part configured to receive signals including transmission data prepared by the source node and transferring the received signals to a succeeding node, a preparing part configured to prepare source node data including at least identification data of the source node based on a predetermined portion of the transmission data, and a reporting part configured to report the source node data and relay data to a management node that manages cost data of plural nodes included in an ad hoc network. The relay data include the cost data and station data including at least identification data of the wireless communications node.

公开(公告)号：US07916049B2

公开(公告)日：2011-03-29

申请号：US12453781

申请日：2009-05-21

申请人： Atsushi Honda ,  Kaoru Yokoo ,  Yoji Ohashi ,  Mitsuhiro Azuma

发明人： Atsushi Honda ,  Kaoru Yokoo ,  Yoji Ohashi ,  Mitsuhiro Azuma

IPC分类号： H04M1/06

CPC分类号： H03H17/08

摘要： A disclosed group delay characteristic correcting device corrects group delay characteristics of an analog low-pass filter used to remove aliasing of a digital-analog converter or an analog-digital converter. The group delay characteristic correcting device includes a digital signal processing unit configured to have an all-pass phase circuit at a stage previous to the digital-analog converter or at a stage subsequent to the analog-digital converter so as to correct the group delay characteristics of the analog low-pass filter.

摘要翻译： 公开的组延迟特性校正装置校正用于去除数模转换器或模数转换器的混叠的模拟低通滤波器的组延迟特性。 组延迟特性校正装置包括：数字信号处理单元，被配置为具有在数模转换器之前的阶段或模拟数字转换器之后的阶段的全通相位电路，以便校正组延迟特性 的模拟低通滤波器。

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：US20110228826A1

公开(公告)日：2011-09-22

申请号：US13049046

申请日：2011-03-16

申请人： Kaoru Yokoo ,  Kazuo Nagatani

发明人： Kaoru Yokoo ,  Kazuo Nagatani

IPC分类号： H04B1/38

CPC分类号： H04L27/0014 ,  H04L27/2626 ,  H04L27/2649 ,  H04L27/364 ,  H04L27/3863 ,  H04L2027/0022 ,  H04L2027/003

摘要： An IQ imbalance correction method includes transmitting a plurality of pairs of RF training signals in installments by pairing RF training signals symmetric with respect to a center frequency on a frequency axis; setting a reception local frequency to change to a frequency that is suitable to receive, via an internal path, each of the plurality of pairs of RF training signals transmitted in installments, and suitable to convert the each of the plurality of pairs of RF training signals into IF training signals; and performing quadrature demodulation on the IF training signals, respectively, in a digital circuit area to generate BB training signals.

摘要翻译： IQ不平衡校正方法包括通过配对相对于频率轴上的中心频率对称的RF训练信号来分批发送多对RF训练信号; 设置接收本地频率以改变为适合于经由内部路径接收以分期发送的多对RF训练信号中的每一个的频率，并且适于转换多对RF训练信号中的每一对 进入IF训练信号; 并在数字电路区域分别对IF训练信号执行正交解调，以产生BB训练信号。

公开(公告)号：US20100060497A1

公开(公告)日：2010-03-11

申请号：US12453781

申请日：2009-05-21

申请人： Atsushi Honda ,  Kaoru Yokoo ,  Yoji Ohashi ,  Mitsuhiro Azuma

发明人： Atsushi Honda ,  Kaoru Yokoo ,  Yoji Ohashi ,  Mitsuhiro Azuma

IPC分类号： H03M1/06

CPC分类号： H03H17/08

摘要： A disclosed group delay characteristic correcting device corrects group delay characteristics of an analog low-pass filter used to remove aliasing of a digital-analog converter or an analog-digital converter. The group delay characteristic correcting device includes a digital signal processing unit configured to have an all-pass phase circuit at a stage previous to the digital-analog converter or at a stage subsequent to the analog-digital converter so as to correct the group delay characteristics of the analog low-pass filter.

摘要翻译： 公开的组延迟特性校正装置校正用于去除数模转换器或模数转换器的混叠的模拟低通滤波器的组延迟特性。 组延迟特性校正装置包括：数字信号处理单元，被配置为具有在数模转换器之前的阶段或模拟数字转换器之后的阶段的全通相位电路，以便校正组延迟特性 的模拟低通滤波器。

公开(公告)号：US20090238306A1

公开(公告)日：2009-09-24

申请号：US12324145

申请日：2008-11-26

申请人： Atsushi Honda ,  Kaoru Yokoo ,  Yoji Ohashi ,  Mitsuhiro Azuma

发明人： Atsushi Honda ,  Kaoru Yokoo ,  Yoji Ohashi ,  Mitsuhiro Azuma

IPC分类号： H03D3/22

CPC分类号： H04L27/2657 ,  H04L27/2675 ,  H04L2027/0038 ,  H04L2027/0046 ,  H04L2027/0067 ,  H04L2027/0087

摘要： A phase tracking circuit includes a divider part dividing an input signal that includes data sub-carriers and pilot sub-carriers into groups so that each of the groups includes at least one of the pilot sub-carriers, and a correcting part correcting phases of data sub-carriers of the input signal included in one of the groups on the basis of an amount of phase rotation of the at least one of the pilot sub-carriers included in the above one of the groups.

摘要翻译： 相位跟踪电路包括将包括数据子载波和导频子载波的输入信号分成组的分频器部分，使得每个组包括导频子载波中的至少一个以及校正数据的相位 基于包括在上述一个组中的至少一个导频子载波的相位旋转量，包括在组中的一个组中的输入信号的子载波。

公开(公告)号：US20050275583A1

公开(公告)日：2005-12-15

申请号：US10984544

申请日：2004-11-08

申请人： Satoshi Mikami ,  Kaoru Yokoo ,  Takayuki Sasaki ,  Takahiro Suzuki

发明人： Satoshi Mikami ,  Kaoru Yokoo ,  Takayuki Sasaki ,  Takahiro Suzuki

IPC分类号： G01S13/28 ,  G01S7/285 ,  G01S13/42 ,  G01S13/58 ,  G01S13/93

CPC分类号： G01S13/288 ,  G01S7/285 ,  G01S13/582 ,  G01S13/931 ,  G01S2013/9325

摘要： A radar equipment of the present invention amplifies a reception signal with feedback based on the delay amount obtained from the correlation detection result. Accordingly, it becomes possible to maintain the reception signal (demodulated signal) level to a proper level depending on the distance to the target, and accurate measurement can be achieved with high precision. Namely, the reception signal is amplified depending on the distance to the target, and the reception signal level is made within a tolerable input level range of a logic circuit for performing correlation calculation. In particular, during tracking the target, even when a reflected signal is received with abrupt level variation caused by noise or a reflected signal from an object other than the target, incorrect detection of the target can be avoided by disabling the correlation calculation.

摘要翻译： 本发明的雷达设备基于从相关检测结果获得的延迟量放大具有反馈的接收信号。 因此，可以根据与目标的距离将接收信号（解调信号）电平维持在适当的水平，并且可以以高精度实现精确的测量。 也就是说，接收信号根据与目标的距离被放大，并且接收信号电平在用于进行相关计算的逻辑电路的可容许的输入电平范围内进行。 特别地，在跟踪目标期间，即使当接收到具有由噪声引起的突然电平变化的反射信号或来自对象以外的对象的反射信号时，也可以通过禁用相关计算来避免目标的不正确检测。