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公开(公告)号：US20120213131A1
公开(公告)日：2012-08-23
申请号：US13459884
申请日：2012-04-30
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。
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公开(公告)号：US20100118745A1
公开(公告)日：2010-05-13
申请号：US12687453
申请日：2010-01-14
IPC分类号： H04J3/00
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。
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公开(公告)号：US20070183545A1
公开(公告)日：2007-08-09
申请号：US10598441
申请日：2005-08-02
IPC分类号： H04B7/10
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104N的接收输出来检测信道信息。 校正值检测单元110根据通道信息，求出用于校正发送电路103-1〜103-N与各接收电路104-1〜104-N之间的偏差的校正值。 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。
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24.发明授权Radio-wave arrival-direction estimating apparatus and directional variable transceiver 有权无线电波到达方向估计装置和方向可变收发器公开(公告)号：US06836245B2
公开(公告)日：2004-12-28
申请号：US10635411
申请日：2003-08-06
IPC分类号： G01S502
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring an angle sweep for arrival angle estimation of MUSIC method or the like.
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公开(公告)号：US08189649B2
公开(公告)日：2012-05-29
申请号：US12687453
申请日：2010-01-14
IPC分类号： H04B1/38
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。
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26.发明授权Radio-wave arrival-direction estimating apparatus and directional variable transceiver 有权无线电波到达方向估计装置和方向可变收发器公开(公告)号：US06897807B2
公开(公告)日：2005-05-24
申请号：US10817978
申请日：2004-04-05
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring all angle sweep for arrival angle estimation of MUSIC method or the like.
摘要翻译： 无线电波到达方向装置通过天线元件之间的相关计算来计算接收信号的相关矩阵，并且通过特征值因子分解来计算其每行或列是属于噪声特征空间的特征向量的噪声空间本征矩阵 相关矩阵。 该装置还使用cholesky因式分解将包括噪声空间本征矩阵的乘积和其共轭和转置矩阵的矩阵分解为上或下三角矩阵。 该装置使用导出的上下三角矩阵来计算到达角度评估函数的预定角度范围内的角度评估值，并且基于计算结果确定到达角度。 在可能的角度范围内的计算量可以在不需要对MUSIC方法等的到达角度估计进行所有角度扫描的算法中而不会导致到达方向的精度降低而降低。
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公开(公告)号：US07676005B2
公开(公告)日：2010-03-09
申请号：US10598441
申请日：2005-08-02
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。
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公开(公告)号：US08498327B2
公开(公告)日：2013-07-30
申请号：US13459884
申请日：2012-04-30
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。
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公开(公告)号：US08659477B2
公开(公告)日：2014-02-25
申请号：US13059363
申请日：2009-10-09
CPC分类号： H04W64/006 , G01S13/765 , G01S2013/466 , H04L27/02 , H04W24/00 , H04W88/08
摘要： Provided are a distance measuring device and a distance measuring method which can easily distinguish a reflected signal from a desired tag from an unnecessary wave so as to improve the distance measuring accuracy even when IR-UWB is used for measuring a distance. The method uses a reader ID indicated by a code string formed by P bits (P is a natural number) for identifying a base station and a tag ID indicated by a code string formed by Q bits (Q is a natural number) for identifying a radio terminal. The method generates a unique word containing P pulses, each of which is ON/OFF-modulated depending on whether each of P bits indicating the reader ID is 1 or 0. The method generates a frame containing 2 M unique words and a burst containing Q frames. The method further outputs a transmission signal containing a plurality of bursts. A radio terminal Amplitude Shift Keying (ASK)—modulates the transmission signal depending on whether each of the Q bits indicating the tag ID is 1 or 0. The ASK-modulated signal is sampling-received at timings of different phases by 1/M (M is an integer not smaller than 1) of the transmission clock cycle.
摘要翻译： 提供了一种距离测量装置和距离测量方法，其可以容易地将来自所需标签的反射信号与不需要的波分离，以便即使当使用IR-UWB来测量距离时也能够提高距离测量精度。 该方法使用由用于识别基站的P位（P是自然数）形成的代码串所指示的读取器ID以及由用于识别基站的Q位（Q是自然数）形成的代码串所指示的标签ID 无线电终端。 该方法生成包含P个脉冲的唯一字，每个脉冲根据指示读取器ID的P位中的每一个是1还是0来进行ON / OFF调制。该方法生成包含2M个唯一字和包含Q的突发的帧 框架。 该方法还输出包含多个突发的发送信号。 无线电终端振幅键控（ASK） - 根据指示标签ID的每个Q位是否为1或0来调制发送信号。ASK调制信号在不同相位的定时采样1 / M（ M是不小于1）的传输时钟周期的整数。
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30.发明授权Radio arrival direction estimation device and radio arrival direction estimation method 有权无线电到达方向估计装置和无线电到达方向估计方法公开(公告)号：US08400357B2
公开(公告)日：2013-03-19
申请号：US13056825
申请日：2009-09-04
IPC分类号： G01S5/02
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相关的相对幅度/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，并且第二加法器（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的相位。
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