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11. 发明授权

US07720172B2 Transmitting apparatus receiving apparatus, radio communication method and radio communication system 有权
标题翻译：发送装置接收装置，无线通信方式和无线通信系统
公开(公告)号：US07720172B2
公开(公告)日：2010-05-18
申请号：US10520028
申请日：2003-09-12
申请人： Yoichi Nakagawa , Masayuki Orihashi
发明人： Yoichi Nakagawa , Masayuki Orihashi
IPC分类号： H04L27/00
CPC分类号： H04L25/0204 , H04K1/02 , H04L9/0819
摘要： A radio communication method for transmitting data to radio stations, wherein propagation parameters to be estimated in a receiving station are controlled, based on the data transmitting, by an array antenna comprising a plurality of antenna elements to perform data transmitting in a transmitting station. This allows channels characterized by the propagation parameters to be shared only by particular radio stations, and signals are superimposed on the propagation parameters, thereby realizing radio access in which a high security is retained.
摘要翻译：一种用于向无线电台发送数据的无线电通信方法，其中，通过包括多个天线元件的阵列天线的数据发送来控制在接收站中要估计的传播参数，以在发射台中执行数据传输。这允许由传播参数表征的信道仅由特定无线电台共享，并且信号叠加在传播参数上，从而实现保持高安全性的无线电接入。

12. 发明申请

US20060003710A1 Transmitter apparatus and radio communication method 有权
标题翻译：发射机和无线电通信方法
公开(公告)号：US20060003710A1
公开(公告)日：2006-01-05
申请号：US10531112
申请日：2004-02-12
申请人： Yoichi Nakagawa , Masayuki Orihashi
发明人： Yoichi Nakagawa , Masayuki Orihashi
IPC分类号： H03C7/02 , H04M1/00 , H04B1/02 , H04B7/02
CPC分类号： H04L27/20 , H04L25/0248 , H04L25/03343
摘要： A radio station equipped with an array antenna, when transmitting an information symbol sequence to a particular radio station, uses a plurality of vectors, which are produced based on a propagation channel characteristic established between these radio stations, to simultaneously transmit a plurality of symbol sequences, which include the information symbol sequence, by way of vector multiplexing, thereby causing the particular radio station to receive the information symbol sequence, while causing other radio stations of different propagation channels to simultaneously receive a part or all the plurality of symbol sequences. Thus, when data is transmitted to a particular radio station via a radio communication channel, the concealment of information can be secured with a high level of security.
摘要翻译：配置有阵列天线的无线电台当向特定无线电台发送信息符号序列时，使用基于在这些无线电站之间建立的传播路径特性而产生的多个向量来同时发送多个符号序列，其包括信息符号序列，从而使特定的无线电台接收信息符号序列，同时使不同传播信道的其他无线电台同时接收部分或全部多个符号序列。因此，当通过无线电通信信道将数据发送到特定的无线电台时，可以以高水平的安全性来确保隐藏信息。

13. 发明授权

US07215979B2 Transmitter apparatus and radio communication method 有权
标题翻译：发射机和无线电通信方法
公开(公告)号：US07215979B2
公开(公告)日：2007-05-08
申请号：US10531112
申请日：2004-02-12
申请人： Yoichi Nakagawa , Masayuki Orihashi
发明人： Yoichi Nakagawa , Masayuki Orihashi
IPC分类号： H04M1/00
CPC分类号： H04L27/20 , H04L25/0248 , H04L25/03343
摘要： A radio station equipped with an array antenna, when transmitting an information symbol sequence to a particular radio station, uses a plurality of vectors, which are produced based on a propagation channel characteristic established between these radio stations, to simultaneously transmit a plurality of symbol sequences, which include the information symbol sequence, by way of vector multiplexing, thereby causing the particular radio station to receive the information symbol sequence, while causing other radio stations of different propagation channels to simultaneously receive a part or all the plurality of symbol sequences. Thus, when data is transmitted to a particular radio station via a radio communication channel, the concealment of information can be secured with a high level of security.
摘要翻译：配置有阵列天线的无线电台当向特定无线电台发送信息符号序列时，使用基于在这些无线电站之间建立的传播路径特性而产生的多个向量来同时发送多个符号序列，其包括信息符号序列，从而使特定的无线电台接收信息符号序列，同时使不同传播信道的其他无线电台同时接收部分或全部多个符号序列。因此，当通过无线电通信信道将数据发送到特定的无线电台时，可以以高水平的安全性来确保隐藏信息。

14. 发明申请

US20070224953A1 Wireless Communication System and Radio Station 审中-公开
标题翻译：无线通信系统和无线电台
公开(公告)号：US20070224953A1
公开(公告)日：2007-09-27
申请号：US10599857
申请日：2005-03-31
申请人： Yoichi Nakagawa , Hirokazu Kobayashi , Yutaka Murakami , Takaaki Kishigami , Kenichi Miyoshi
发明人： Yoichi Nakagawa , Hirokazu Kobayashi , Yutaka Murakami , Takaaki Kishigami , Kenichi Miyoshi
IPC分类号： H04B7/08
CPC分类号： H04B7/061 , H04B7/0802
摘要： It is an object of the invention to provide a wireless communication system capable of decreasing the effect of radio interference on a different wireless station using the same frequency band and preventing information from leaking to a different wireless station while ensuring the transmit quality of a wireless channel used between specific wireless stations according to a simple configuration in a quasi-static fading environment of wireless communications. A transmit station 101 selects one optimum antenna from among antennas based on quality information of a transmission path 104 and transmits a packet to a receive station 102 from the selected antenna. The receive station 102 receives the packet from the transmit station 101 at one antenna selected from among antennas and switches the currently selected antenna to a different antenna. The receive station 102 transmits a response packet to the received packet to the transmit station 101 from the antenna to which the current antenna is switched. The transmit station 101 receives the response packet at each of the antennas, selects the antenna with the best receive quality as a packet transmit antenna, and transmits a packet to the receive station 102 from the selected antenna. Then, the processing is repeated.
摘要翻译：本发明的一个目的是提供一种无线通信系统，能够减少无线电干扰对使用相同频带的不同无线站的影响，并且防止信息泄漏到不同的无线站，同时确保无线信道的传输质量根据无线通信的准静态衰落环境中的简单配置在特定无线站之间使用。发送站101基于传输路径104的质量信息从天线中选择一个最佳天线，并从所选择的天线向接收站102发送分组。接收站102从天线中选择的一个天线从发射台101接收分组，并将当前选择的天线切换到不同的天线。接收站102从当前天线被切换到的天线向接收到的分组发送响应分组给发射台101。发送台101在每个天线接收响应分组，选择具有最佳接收质量的天线作为分组发送天线，并从所选择的天线向接收站102发送分组。然后，重复处理。

15. 发明申请

US20130229297A1 RADAR APPARATUS 有权
标题翻译：雷达装置
公开(公告)号：US20130229297A1
公开(公告)日：2013-09-05
申请号：US13812124
申请日：2011-06-03
申请人： Hirohito Mukai , Takaaki Kishigami , Yoichi Nakagawa
发明人： Hirohito Mukai , Takaaki Kishigami , Yoichi Nakagawa
IPC分类号： G01S7/34
CPC分类号： G01S7/34 , G01S7/28 , G01S7/2922 , G01S13/0209 , G01S13/42
摘要： A pulse signal is produced in a pulse generating section, and repetitively transmitted from an antenna at constant time intervals. A reception signal, received through an antenna and including a reflective wave from an object, is amplified and gain-adjusted. Thereafter, a distance detecting section detects a reception pulse of the reflected wave, and calculates the distance to the object. The variable attenuator attenuates the reception signal by a gain adjusted in accordance with a gain control signal. The gain of the variable attenuator is controlled so as to be maximum immediately after the pulse signal is transmitted, and to be reduced with elapse of time. Based on a gain adjustment timing signal, a gain adjustment timing when the attenuation amount is changed is made different for each transmission of the pulse signal.
摘要翻译：在脉冲发生部产生脉冲信号，从天线以恒定的时间间隔反复发送。通过天线接收并包括来自对象的反射波的接收信号被放大和增益调整。此后，距离检测部分检测反射波的接收脉冲，并计算到物体的距离。可变衰减器通过根据增益控制信号调节的增益来衰减接收信号。可变衰减器的增益被控制为在脉冲信号传输之后立即最大，并且随着时间的流逝而减小。基于增益调整定时信号，对于脉冲信号的每次发送，使衰减量改变时的增益调整定时不同。

16. 发明授权

US08498327B2 Wireless communication apparatus 有权
标题翻译：无线通信装置
公开(公告)号：US08498327B2
公开(公告)日：2013-07-30
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： H04B1/38
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。

17. 发明申请

US20130127655A1 RADAR DEVICE 有权
标题翻译：雷达设备
公开(公告)号：US20130127655A1
公开(公告)日：2013-05-23
申请号：US13816045
申请日：2012-04-05
申请人： Takaaki Kishigami , Yoichi Nakagawa , Hirohito Mukai
发明人： Takaaki Kishigami , Yoichi Nakagawa , Hirohito Mukai
IPC分类号： G01S13/44
CPC分类号： G01S13/44 , G01S3/00 , G01S5/02 , G01S7/288 , G01S7/292 , G01S13/06 , G01S13/284 , G01S13/36 , G01S13/42 , G01S13/582 , G01S2013/0263
摘要： A radar receiver has plural antenna system processors each for performing coherent integration on the basis of correlation values between a reception signal and a transmission signal using correction amounts for phase variations corresponding to plural Doppler frequencies, plural correlation matrix generators for generating, for each of the plural different Doppler frequencies, correlation matrices which are pieces of phase difference information relating to an arrangement of reception antennas on the basis of sets of outputs of the coherent integration, respectively, an adder for adding together outputs of the plural correlation matrix generators, and an incoming direction estimator for estimating an incoming direction of reflection waves on the basis of outputs of the adder.
摘要翻译：雷达接收机具有多个天线系统处理器，每个天线系统处理器用于基于接收信号和发送信号之间的相关值执行相干积分，所述相关值使用与多个多普勒频率对应的相位变化的校正量，多个相关矩阵发生器，用于为多个不同的多普勒频率，分别基于相干积分的输出的集合，与接收天线的配置有关的相位差信息的相关矩阵，用于将多个相关矩阵发生器的输出相加的加法器，以及输入方向估计器，用于基于加法器的输出来估计反射波的输入方向。

18. 发明申请

US20130120185A1 RADAR APPARATUS 有权
标题翻译：雷达装置
公开(公告)号：US20130120185A1
公开(公告)日：2013-05-16
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
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。

19. 发明授权

US08428040B2 Reception apparatus and reception method for setting a format per divided band 有权
标题翻译：用于设定分割频带格式的接收装置和接收方法
公开(公告)号：US08428040B2
公开(公告)日：2013-04-23
申请号：US13185028
申请日：2011-07-18
申请人： Takaaki Kishigami , Yoichi Nakagawa , Kentaro Miyano
发明人： Takaaki Kishigami , Yoichi Nakagawa , Kentaro Miyano
IPC分类号： H04W4/00 , H04J1/00 , H04B7/208
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。

20. 发明授权

US08416748B2 Radio communication system, radio communication method, base station device, and terminal device 有权
标题翻译：无线通信系统，无线通信方式，基站装置，终端装置
公开(公告)号：US08416748B2
公开(公告)日：2013-04-09
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： H04W4/00
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 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 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 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。基站装置向空分多路复用终端MSm发送专用数据发送通知，并且发送关于在不同终端空分多路复用中使用的发送波束的信息的通知，以及关于在不同终端中使用的信号功率的信息，终端MSm。根据所发送的信息，每个终端MSm根据MMSE准则计算干扰消除权重作为权重以最大化SINR，并且接收信号乘以所获得的干扰消除权重以减小干扰分量，然后通过最大似然估计来检测信号基于发送的用于接收空间多发信号的信号星座的信息。

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