公开(公告)号：US09146298B2

公开(公告)日：2015-09-29

申请号：US13483617

申请日：2012-05-30

申请人： Kaoru Yokoo

发明人： Kaoru Yokoo

IPC分类号： G01S5/02 ,  H04W72/04 ,  H04W64/00

CPC分类号： G01S5/0289 ,  G01S5/0252 ,  H04W64/00

摘要： A wireless communication system that includes a hub and multiple nodes is provided. The nodes include a wireless communication control unit that acquires, during a predetermined communication time period, a signal transmitted to the hub by a node; an RSSI calculating unit that calculates propagation information from the signal acquired by the wireless communication control unit; and an RSSI table creating unit that transmits the calculated propagation information to the hub. The hub includes a wireless communication control unit that receives propagation information transmitted by each of the nodes and an RSSI table aggregating unit that aggregates the received propagation information.

摘要翻译： 提供了一种包括集线器和多个节点的无线通信系统。 节点包括：无线通信控制单元，其在预定通信时间段期间获取由节点发送到所述集线器的信号; RSSI计算单元，其从由所述无线通信控制单元获取的信号计算传播信息; 以及将计算出的传播信息发送到集线器的RSSI表生成部。 集线器包括：无线通信控制单元，其接收由每个节点发送的传播信息;以及RSSI表聚合单元，聚合所接收的传播信息。

公开(公告)号：US08891374B2

公开(公告)日：2014-11-18

申请号：US13418544

申请日：2012-03-13

申请人： Tatsuya Kikuzuki ,  Masafumi Katoh ,  Kaoru Yokoo

发明人： Tatsuya Kikuzuki ,  Masafumi Katoh ,  Kaoru Yokoo

IPC分类号： H04L12/26 ,  H04W74/08 ,  H04L12/28 ,  H04W24/02 ,  H04W24/10

CPC分类号： H04W74/0816 ,  H04W24/02 ,  H04W24/10 ,  Y02D70/142 ,  Y02D70/162

摘要： A wireless communication device, including a radio transceiver data configured to transmit and to receive data packets to and from a base station, and a processor configured to compute a proportional hidden standby time being computed on the basis of at least two of from among a proportional exposed communication time, a proportional exposed collision time, and a proportional exposed standby time, to compute a predicted PER from the proportional hidden standby time computed; to compute a threshold value for the number of retransmission attempts on the basis of the predicted PER computed, and to cause the radio transceiver to repeat transmission of a data packet to the base station until the number of transmissions exceeds the threshold value computed in the case of failed transmission of a data packet to the base station by the radio transceiver.

摘要翻译： 一种无线通信设备，包括被配置为向基站发送数据分组和从基站接收数据分组的无线电收发器数据，以及被配置为计算比例隐藏待机时间的处理器，其基于比例中的至少两个来计算 暴露的通信时间，暴露的碰撞时间比例和暴露的等待时间成比例，从计算的比例隐藏待机时间计算预测的PER; 基于所计算的预测的PER来计算重传尝试次数的阈值，并且使无线电收发器重复向基站发送数据分组，直到传输次数超过在该情况下计算的阈值 由无线电收发器将数据分组发送到基站的失败。

公开(公告)号：US20120238303A1

公开(公告)日：2012-09-20

申请号：US13417614

申请日：2012-03-12

申请人： Tatsuya Kikuzuki ,  Yoji Ohashi ,  Kaoru Yokoo

发明人： Tatsuya Kikuzuki ,  Yoji Ohashi ,  Kaoru Yokoo

IPC分类号： H04W72/12 ,  H04W88/02 ,  H04W88/08

CPC分类号： H04W72/1226 ,  H04W36/18 ,  H04W88/08

摘要： A radio communication system including a base station apparatus including a first memory to store a schedule for communication using each of a plurality of set values of a predetermined communication element in the physical layer, a first antenna to communicate with a terminal apparatus using a first set value of the plurality of set values in accordance with the schedule stored in the first memory, and a first processor to select a second set value of the plurality of set values if the condition of communication performed with the terminal apparatus by the first antenna using the first set value has deteriorated, and cause the first antenna to perform communication using the selected second set value in accordance with the schedule and the terminal apparatus including a second memory to store the schedule, a second antenna to communicate with the base station apparatus, and a second processor.

摘要翻译： 一种无线电通信系统，包括：基站装置，包括：第一存储器，用于存储使用所述物理层中的预定通信元件的多个设定值中的每一个进行通信的调度;第一天线，其与使用第一组的终端装置进行通信 根据存储在第一存储器中的调度的多个设定值的值，以及第一处理器，如果通过使用第一天线的终端装置与终端装置进行通信的条件，则选择多个设定值的第二设定值 第一设定值劣化，并且使第一天线根据调度使用所选择的第二设定值进行通信，并且终端装置包括存储该调度的第二存储器，与基站装置进行通信的第二天线，以及 第二个处理器

公开(公告)号：US08194764B2

公开(公告)日：2012-06-05

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： H04K1/10

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：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：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：US20050174281A1

公开(公告)日：2005-08-11

申请号：US11077065

申请日：2005-03-10

申请人： Kaoru Yokoo ,  Yasuyuki Oishi

发明人： Kaoru Yokoo ,  Yasuyuki Oishi

IPC分类号： G01S13/10 ,  G01S13/08

CPC分类号： G01S13/103

摘要： The invention relates to a radar device for measuring a relative distance to a target. It is an object of the invention to precisely determine the relative distance to the target in a wide range. The radar device according to the invention generates a second pulse by demodulating a signal arriving from a target as a response to a wave signal modulated with a first pulse. The radar device evaluates, as the relative distance to the target, such two different instances that an absolute value of a deviation of a ratio of two instantaneous values of the second pulse from a reference value as a ratio of two instantaneous values of the first pulse is to be minimum. The respective two instantaneous values are with a predetermined interval therebetween on a time axis.

摘要翻译： 本发明涉及一种用于测量与目标的相对距离的雷达装置。 本发明的一个目的是在宽范围内精确地确定与目标的相对距离。 根据本发明的雷达装置通过解调从目标到达的信号作为对用第一脉冲调制的波信号的响应来产生第二脉冲。 雷达装置评估作为到目标的相对距离的两个不同情况，即将第二脉冲的两个瞬时值与参考值的比值的偏差的绝对值作为第一脉冲的两个瞬时值的比率 是最小的。 相应的两个瞬时值在时间轴上具有预定间隔。

公开(公告)号：US08514914B2

公开(公告)日：2013-08-20

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：US20120236719A1

公开(公告)日：2012-09-20

申请号：US13418544

申请日：2012-03-13

申请人： Tatsuya Kikuzuki ,  Masafumi Katoh ,  Kaoru Yokoo

发明人： Tatsuya Kikuzuki ,  Masafumi Katoh ,  Kaoru Yokoo

IPC分类号： H04W24/00

CPC分类号： H04W74/0816 ,  H04W24/02 ,  H04W24/10 ,  Y02D70/142 ,  Y02D70/162

摘要： A wireless communication device, including a radio transceiver data configured to transmit and to receive data packets to and from a base station, and a processor configured to compute a proportional hidden standby time being computed on the basis of at least two of from among a proportional exposed communication time, a proportional exposed collision time, and a proportional exposed standby time, to compute a predicted PER from the proportional hidden standby time computed; to compute a threshold value for the number of retransmission attempts on the basis of the predicted PER computed, and to cause the radio transceiver to repeat transmission of a data packet to the base station until the number of transmissions exceeds the threshold value computed in the case of failed transmission of a data packet to the base station by the radio transceiver.

摘要翻译： 一种无线通信设备，包括被配置为向基站发送数据分组和从基站接收数据分组的无线电收发器数据，以及被配置为计算比例隐藏待机时间的处理器，其基于比例中的至少两个来计算 暴露的通信时间，暴露的碰撞时间比例和暴露的等待时间成比例，从计算的比例隐藏待机时间计算预测的PER; 基于所计算的预测的PER来计算重传尝试次数的阈值，并且使无线电收发器重复向基站发送数据分组，直到传输次数超过在该情况下计算的阈值 由无线电收发器将数据分组发送到基站的失败。

公开(公告)号：US20120007719A1

公开(公告)日：2012-01-12

申请号：US13239869

申请日：2011-09-22

申请人： Ichirou Ida ,  Kaoru Yokoo

发明人： Ichirou Ida ,  Kaoru Yokoo

IPC分类号： H04Q5/22

CPC分类号： H04W24/10 ,  A61B5/0024 ,  H01Q1/1257 ,  H01Q3/24 ,  H04B7/0617 ,  H04B7/0623 ,  H04B7/0695 ,  H04B17/18 ,  H04L1/08 ,  H04L1/1607 ,  H04W24/08 ,  H04W84/10

摘要： A wireless communication device includes a transmitter configured to transmit test signals a predetermined number of times at an interval shorter than a transmission interval of data signals and a processor configured to measure reception status of a plurality of acknowledgement signals transmitted back in response to the respective test signals transmitted by the transmitter.

摘要翻译： 无线通信装置包括：发射机，被配置为以比数据信号的传输间隔短的间隔发送测试信号预定次数;以及处理器，被配置为测量响应于相应测试发送回的多个确认信号的接收状态 由发射机发射的信号。