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1. 发明授权

US09134405B2 Radar apparatus 有权
标题翻译：雷达装置
公开(公告)号：US09134405B2
公开(公告)日：2015-09-15
申请号：US13811641
申请日：2011-07-14
申请人： Takaaki Kishigami , Yoichi Nakagawa , Hirohito Mukai
发明人： Takaaki Kishigami , Yoichi Nakagawa , Hirohito Mukai
IPC分类号： G01S13/28 , G01S7/28 , G01S7/285
CPC分类号： G01S13/284 , G01S7/2813 , G01S7/285 , G01S13/288
摘要： A radar apparatus transmits a radio frequency transmission signal from a transmitter antenna in a given transmission period, and receives a signal of a reflected wave reflected by a target via a receiver antenna. The radar apparatus includes a transmission signal generator that generates a first transmission signal obtained by modifying a code having a third sub-code sequence and a fourth sub-code sequence coupled to each other in a first transmission period, and generates a second transmission period obtained by modifying a code having a fifth sub-code sequence and a sixth sub-code sequence coupled to each other in a second transmission period, and a transmitter RF unit that converts the first and second transmission signals into radio frequency transmission signals, and transmits the radio frequency transmission signals from the transmitter antenna.
摘要翻译：雷达装置在给定的传输周期内从发射机天线发射射频信号，并通过接收机天线接收由目标反射的反射波的信号。雷达装置包括：发送信号发生器，其生成通过在第一发送周期中修改具有彼此耦合的第三子码序列和第四子码序列的码而获得的第一发送信号，并且生成获得的第二发送周期通过在第二发送周期中修改具有彼此耦合的第五子码序列和第六子码序列的码，以及将第一和第二发送信号转换为射频发送信号的发送器RF单元，来自发射机天线的射频传输信号。

2. 发明申请

US20130113653A1 RADAR DEVICE 有权
标题翻译：雷达设备
公开(公告)号：US20130113653A1
公开(公告)日：2013-05-09
申请号：US13807189
申请日：2011-07-01
申请人： Takaaki Kishigami , Hirohito Mukai , Yoichi Nakagawa
发明人： Takaaki Kishigami , Hirohito Mukai , Yoichi Nakagawa
IPC分类号： G01S7/35
CPC分类号： G01S7/35 , G01S7/285 , G01S7/4021 , G01S13/42 , G01S13/931
摘要： The disclosed technique includes transmitting a signal intermittently according to a transmission cycle having a predetermined transmission period and a non-transmission period; receiving the signal reflected from a target with reception antennas; and detecting the target from the reflected signal. A high-frequency transmission signal attenuated during the transmission period and a receipt signal received during the non-transmission period are combined together. A correlation value between a reference transmission signal and the receipt signal in the combined signal is calculated, and the amount of phase shift in an arbitrarily selected reception antenna is calculated from the correlation value of a reference reception antenna, and the correlation values of the other reception antennas. The phase component of the correlation value of the arbitrarily selected reception antenna is corrected on the basis of the amount of phase shift.
摘要翻译：所公开的技术包括根据具有预定发送周期和非发送周期的发送周期间歇地发送信号; 用接收天线接收从目标反射的信号; 并从反射信号中检测目标。在发送期间衰减的高频发送信号和在非发送期间接收的接收信号组合在一起。计算组合信号中的参考传输信号和接收信号之间的相关值，并根据参考接收天线的相关值计算任意选择的接收天线中的相移量，另一个的相关值接收天线。基于相移量来校正任意选择的接收天线的相关值的相位分量。

3. 发明授权

US08208981B2 MIMO communication device 失效
标题翻译： MIMO通信设备
公开(公告)号：US08208981B2
公开(公告)日：2012-06-26
申请号：US12593572
申请日：2008-03-28
申请人： Takashi Fukagawa , Yoichi Nakagawa , Masato Ukena
发明人： Takashi Fukagawa , Yoichi Nakagawa , Masato Ukena
IPC分类号： H04M1/00
CPC分类号： H01Q1/2266
摘要： Provided is a MIMO communication device which can maintain the MIMO communication characteristic at a certain level regardless of the device installation position. The MIMO communication device (100) includes antenna elements (101-1, 101-2) as a first and a second antenna element which are arranged on a single straight line and an antenna element (102-1) or an antenna element (102-2) as a third antenna element which is arranged out of the straight line. A MIMO modulation unit (105) is connected to all the antenna elements. This assures that there exists a combination of antennas having other than 0 as a matrix expression of a channel estimation matrix in a propagation path between the MIMO communication device (100) and the communication partner regardless of the installation position of the MIMO communication device (100) with respect to a communication partner. As a result, it is possible to realize the MIMO communication device which can maintain the MIMO communication characteristic at a certain level or above regardless of the device installation position.
摘要翻译：提供了一种MIMO通信设备，其可以将MIMO通信特性保持在一定水平，而与设备安装位置无关。 MIMO通信设备（100）包括布置在单个直线上的天线元件（101-1,101-2）和第一天线元件和第二天线元件，天线元件（102-1）或天线元件（102） -2）作为布置在直线之外的第三天线元件。 MIMO调制单元（105）连接到所有天线元件。这确保在MIMO通信设备（100）和通信对方之间的传播路径中存在除了0之外的天线的组合作为信道估计矩阵的矩阵表达式，而与MIMO通信设备（100）的安装位置无关）相对于沟通伙伴。结果，无论设备安装位置如何，都可以实现能够将MIMO通信特性保持在一定水平或更高水平的MIMO通信设备。

4. 发明申请

US20120032850A1 ARRAY SIGNAL PROCESSING DEVICE 有权
标题翻译：阵列信号处理装置
公开(公告)号：US20120032850A1
公开(公告)日：2012-02-09
申请号：US13263964
申请日：2010-04-26
申请人： Yoichi Nakagawa , Takashi Fukagawa , Hirohito Mukai
发明人： Yoichi Nakagawa , Takashi Fukagawa , Hirohito Mukai
IPC分类号： G01S3/14
CPC分类号： G01S3/74 , H01Q1/246 , H01Q3/26 , H01Q21/08
摘要： Provided is an array signal processing device capable of, when a spatial averaging method is applied to array signal processing, reducing the number of antennas constituting an array antenna while making use of the spatial averaging method. In the array signal processing device (300), an array antenna (310) comprises four antennas (311-1 to 311-4) disposed at the four vertices of a parallelogram. Correlation calculation units (341-1, 2) calculate, based on a received signal, spatial correlation matrices for respective sub-array antenna (312-1) and sub-array antenna (312-2), the sub-array antenna (312-1) comprising the antennas (311-1, 3) disposed at the opposing two vertices and the antenna (311-2), the sub-array antenna (312-2) comprising the antennas (311-1, 3) and the antenna (311-4). An array rotation unit (342) converts a first spatial matrix of the calculated two spatial matrices to the complex conjugate thereof. A spatial averaging unit (343) averages the complex conjugate of the first spatial matrix and a second spatial matrix.
摘要翻译：提供了一种阵列信号处理装置，当空间平均方法应用于阵列信号处理时，能够在利用空间平均方法的同时减少构成阵列天线的天线的数量。在阵列信号处理装置（300）中，阵列天线（310）包括设置在平行四边形的四个顶点的四个天线（311-1至311-4）。相关计算单元（341-1,2）基于接收信号计算各子阵列天线（312-1）和子阵列天线（312-2）的空间相关矩阵，子阵列天线（312 -1）包括设置在相对的两个顶点处的天线（311-1,3）和天线（311-2），子阵列天线（312-2）包括天线（311-1,3）和天线（311-4）。阵列旋转单元（342）将所计算的两个空间矩阵的第一空间矩阵转换成其复共轭。空间平均单元（343）对第一空间矩阵和第二空间矩阵的复共轭进行平均。

5. 发明申请

US20110133988A1 RADIO ARRIVAL DIRECTION ESTIMATION DEVICE AND RADIO ARRIVAL DIRECTION ESTIMATION METHOD 有权
标题翻译：无线电到达方向估计装置和无线电方向估计方法
公开(公告)号：US20110133988A1
公开(公告)日：2011-06-09
申请号：US13056825
申请日：2009-09-04
申请人： Takashi Fukagawa , Yoichi Nakagawa , Hirohito Mukai
发明人： Takashi Fukagawa , Yoichi Nakagawa , Hirohito Mukai
IPC分类号： G01S3/12
CPC分类号： G01S13/82 , G01S3/46
摘要： A radio arrival direction estimation device that accurately estimates the arrival direction of radio waves from a desired tag, even when there are multiple antennas disposed at short intervals. When ID detection timing is provided from a timing detector (114) to a switch (201), relative amplitude/phase data related to the tag ID digital value “1” or “0” is obtained by an arrival direction estimation unit (125). One relative amplitude/phase datum is formed for each unit cycle in a first adder (202), which adds the relative amplitude/phase datum related to the tag ID digital value “1” to each element in a matrix, and a second adder (203), which adds the relative amplitude/phase datum related to the tag ID digital value “0” to each element in a matrix. An OOK signal causes an arithmetic unit (204) to subtract the relative amplitude/phase data produced by the second adder (203) from the relative amplitude/phase data produced by the first adder (202), and extract the phase of a signal corresponding to the phase of the digital value “1.”
摘要翻译：无线电到达方向估计装置，即使当以短间隔布置多个天线时，也能够从期望的标签精确地估计无线电波的到达方向。当从定时检测器（114）向开关（201）提供ID检测定时时，通过到达方向估计单元（125）获得与标签ID数字值“1”或“0”有关的相对幅度/相位数据，。在第一加法器（202）中为每个单位周期形成一个相对幅度/相位数据，其将与标签ID数字值“1”相关的相对幅度/相位数据与矩阵中的每个元素相加，以及第二加法器 203），其将与标签ID数字值“0”相关的相对幅度/相位数据添加到矩阵中的每个元素。 OOK信号使算术单元（204）从由第一加法器（202）产生的相对幅度/相位数据中减去由第二加法器（203）产生的相对幅度/相位数据，并且提取相应的信号的相位到数字值“1”的阶段。

6. 发明申请

US20110058574A1 APPARATUS AND METHOD FOR RADIO COMMUNICATION 有权
标题翻译：无线电通信的装置和方法
公开(公告)号：US20110058574A1
公开(公告)日：2011-03-10
申请号：US12944552
申请日：2010-11-11
申请人： Takaaki Kishigami , Yoichi Nakagawa , Kentaro Miyano
发明人： Takaaki Kishigami , Yoichi Nakagawa , Kentaro Miyano
IPC分类号： H04J3/00
CPC分类号： H04W72/0453 , H04B7/01 , H04B7/0697 , H04L5/0023 , H04L5/0026 , H04L5/0028 , H04L5/0037 , H04L5/0044 , H04L5/0051 , H04L5/006 , H04W24/08 , H04W72/042 , H04W72/085
摘要： A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section (108) detects space multiplexing transmission adaptability for divided bands (DB-1 to DB-Nd) obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results (#1 to #Nd). Transmission format setting section (110) sets a transmission format when carrying out radio transmission based on the detection results (#1 to #Nd) from space multiplexing adaptability detection section (108).
摘要翻译：一种无线电通信装置，其能够减轻设置发送格式的负担，并抑制装置的规模的增加。在该装置中，空间复用适应性检测部（108）检测通过划分N个副载波信号属于多载波传输的通信频带而得到的划分频带（DB-1〜DB-Nd）的空间复用传输适应性，子载波信号属于，并输出检测结果（＃1至#Nd）。发送格式设定部（110）根据来自空间复用适应性检测部（108）的检测结果（＃1〜#Nd），进行无线发送时的发送格式。

7. 发明申请

US20100183063A1 Wireless Distance Measurement System and Wireless Terminal 失效
标题翻译：无线距离测量系统和无线终端
公开(公告)号：US20100183063A1
公开(公告)日：2010-07-22
申请号：US12639754
申请日：2009-12-16
申请人： Takashi FUKAGAWA , Yoichi NAKAGAWA , Hirohito MUKAI
发明人： Takashi FUKAGAWA , Yoichi NAKAGAWA , Hirohito MUKAI
IPC分类号： H04B17/00
CPC分类号： H04B17/318 , H04B17/27
摘要： A wireless distance measurement system and wireless terminal improve the accuracy of distance measurement when the UWB communication scheme is used. In wireless terminal 200, a route of signals varies between a distance measuring operation and a synchronization establishing operation, and, when the distance measuring operation is performed, a detection result is inputted to comparator 208 without passing through integrator 204. By this means, the distance measuring operation of wireless terminal 200 does not involve integration processing, so that delay time due to integration processing is not produced and, consequently, it is possible to improve the accuracy of distance measurement. Further, the distance measuring operation uses the integration result acquired integrator 204 for a comparison reference voltage used in comparator 208. By this means, the integration result removing noise signal components from a detection signal is used for the comparison reference voltage, so that the comparison reference voltage is optimized. Consequently, it is possible to further improve the accuracy of distance measurement.
摘要翻译：当使用UWB通信方案时，无线距离测量系统和无线终端提高距离测量的准确性。在无线终端200中，信号路径在距离测量操作和同步建立操作之间变化，并且当执行距离测量操作时，检测结果被输入到比较器208而不经过积分器204.通过这种方式，无线终端200的距离测量操作不涉及积分处理，因此不会产生由于积分处理而引起的延迟时间，因此能够提高距离测量的精度。此外，距离测量操作使用积分结果获取积分器204用于比较器208中使用的比较参考电压。通过这种方式，从检测信号中去除噪声信号分量的积分结果用于比较参考电压，使得比较参考电压被优化。因此，可以进一步提高距离测量的精度。

8. 发明授权

US07676005B2 Wireless communication apparatus 有权
标题翻译：无线通信装置
公开(公告)号：US07676005B2
公开(公告)日：2010-03-09
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： H03D1/04
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

US20090207780A1 COMMUNICATION SYSTEM, BASE STATION CONTROL DEVICE, AND BASE STATION DEVICE 有权
标题翻译：通信系统，基站控制装置和基站装置
公开(公告)号：US20090207780A1
公开(公告)日：2009-08-20
申请号：US11573536
申请日：2005-07-28
申请人： Takaaki Kishigami , Yoichi Nakagawa
发明人： Takaaki Kishigami , Yoichi Nakagawa
IPC分类号： H04W88/08
CPC分类号： H04W88/08 , H04B7/022 , H04B7/0626 , H04B7/0669 , H04B7/0689
摘要： There are provided a communication system, a base station control device, and a base station device capable of improving communication quality. In the communication system (100), the base station control device (120) totalizes information on the number of base stations as the number of base station devices (130) which can communicate with a mobile station device (140), makes Nb copies of a data frame, successively assigns integer values from 1 to Nb as stream numbers Ns to the data frames copied, and forms Nb copied data frames including Nb and Ns in header information. Copied data frames having different Ns in the header information are sent to the base station devices (130) which can communicate with the mobile station device (140). According to the Ns and Nb contained in the copied data frame, the base station device (130) subjects the data in the copied data frame to temporal/spatial encoding to form a temporal/spatial encoding series. The mobile station device (140) receives the temporal/spatial encoding series signal from each of the base station devices (130).
摘要翻译：提供了能够提高通信质量的通信系统，基站控制装置和基站装置。在通信系统（100）中，基站控制装置（120）将能够与移动台装置（140）进行通信的基站装置（130）的数量的基站数量的信息合计，一个数据帧，将从1到Nb的整数值作为数据流Ns分配给复制的数据帧，并在标题信息中形成包含Nb和Ns的Nb复制数据帧。在标题信息中具有不同Ns的复制数据帧被发送到可与移动站装置（140）进行通信的基站装置（130）。根据复制数据帧中包含的Ns和Nb，基站装置（130）对复制数据帧中的数据进行时间/空间编码，以形成时间/空间编码序列。移动站装置（140）从每个基站装置（130）接收时间/空间编码序列信号。

10. 发明申请

US20080008110A1 Radio Communication System, Radio Communication Method, Base Station Device, and Terminal Device 有权
标题翻译：无线电通信系统，无线电通信方法，基站装置和终端装置
公开(公告)号：US20080008110A1
公开(公告)日：2008-01-10
申请号：US11568571
申请日：2005-04-20
申请人： Takaaki Kishigami , Yoichi Nakagawa
发明人： Takaaki Kishigami , Yoichi Nakagawa
IPC分类号： H04B7/00
CPC分类号： H04W16/28 , H04B7/0452 , H04B7/0632 , H04B7/0634 , H04B7/0639 , H04B7/0665 , H04B7/0854
摘要： A wireless communication system capable of removing a transmission signal to a different terminal space division multiplexed, an interference signal, in a terminal when wireless communications are conducted using space division multiple access is provided. A base station apparatus 1 sends a notification of dedicated data transmission to a space division multiplexed terminal MSm and also sends a notification of information concerning a transmission beam 4 used in a different terminal space division multiplexed and information concerning signal power used in the different terminal normalized in the terminal MSm. Based on the sent information, each terminal MSm calculates interference cancel weight according to MMSE (minimum square error criterion) criterion as the weight to maximize SINR and a reception signal is multiplied by the obtained interference cancel weight for decreasing the interference component and then the signal is detected by maximum likelihood estimation based on information of signal constellation transmitted for receiving spatially multiple-transmitted signal.
摘要翻译：提供一种无线通信系统，其能够在使用空分多路访问进行无线通信时，将发送信号去除到终端中的不同终端空分复用，干扰信号。基站装置1向空分多路复用终端MS＆lt; m＆gt;发送专用数据发送通知，并且发送关于在不同的终端空分复用中使用的发送波束4的信息的通知，以及关于在终端MS 中归一化的不同终端中使用的信号功率。基于所发送的信息，每个终端MS MS根据MMSE（最小平方误差准则）准则计算干扰消除权重作为最大化SINR的权重，并且接收信号乘以获得的干扰消除权重减少干扰分量，然后基于发送的用于接收空间多发信号的信号星座的信息，通过最大似然估计来检测信号。

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