公开(公告)号：US07203178B2

公开(公告)日：2007-04-10

申请号：US10162194

申请日：2002-06-05

申请人： Naoto Ishii ,  Shousei Yoshida

发明人： Naoto Ishii ,  Shousei Yoshida

IPC分类号： H04B3/23 ,  H04B7/216

CPC分类号： H04B7/0897 ,  H04B1/71075

摘要： A multiuser interference elimination apparatus in which, even in the second and other subsequent stages, adaptive updating of antenna weights can be performed and antenna weights can be generated with accuracy by using interference-canceled received signals. A multiplier performs gain correction by multiplying a symbol replica transmitted from the preceding stage by a coefficient [1−(1−α)m−1], and an antenna signal regeneration section converts the gain-corrected symbol replica into antenna signals. Adders add the antenna signals converted by the antenna signal regeneration section to outputs from despread devices and output the addition results to an antenna weight adaptive updating section. The antenna weight adaptive updating section performs adaptive updating of antenna weights by using the addition results.

摘要翻译： 一种多用户干扰消除装置，其中即使在第二和其它后续阶段中，可以执行天线权重的自适应更新，并且可以通过使用干扰消除的接收信号来精确地生成天线权重。 乘法器通过将从前一级发送的符号复制品乘以系数[1-（1-α） m-1]来执行增益校正，并且天线信号再生部分将经增益校正的符号 复制到天线信号。 加法器将由天线信号再生部分转换的天线信号添加到解扩设备的输出，并将加法结果输出到天线权重自适应更新部分。 天线权重自适应更新部分通过使用相加结果来执行天线权重的自适应更新。

公开(公告)号：US20070070879A1

公开(公告)日：2007-03-29

申请号：US11524941

申请日：2006-09-22

申请人： Shousei Yoshida ,  Masayuki Kimata ,  Yoshikazu Kakura ,  Kengo Oketani

发明人： Shousei Yoshida ,  Masayuki Kimata ,  Yoshikazu Kakura ,  Kengo Oketani

IPC分类号： H04J11/00

CPC分类号： H04L5/023 ,  H04L27/2662 ,  H04L2025/03414

摘要： A multi-user receiving apparatus is provided for achieving a reduction in the amount of processing for single-carrier FDMA signals and an improvement in reception characteristics. A DFT unit converts single-carrier FDMA received signals of all users to signals in a frequency domain commonly. A demapping unit selects part of sub-carriers for each user from sub-carriers supplied from the DFT unit. A reception filter separates a user signal and suppresses noise. A demodulator demodulates the user signal, and detects a timing thereof.

摘要翻译： 提供了一种多用户接收装置，用于实现单载波FDMA信号的处理量的减少和接收特性的提高。 DFT单元将所有用户的单载波FDMA接收信号通常转换为频域中的信号。 解映射单元从DFT单元提供的副载波中为每个用户选择子载波的一部分。 接收滤波器分离用户信号并抑制噪声。 解调器解调用户信号，并检测其定时。

公开(公告)号：US07106785B2

公开(公告)日：2006-09-12

申请号：US10161689

申请日：2002-06-05

申请人： Shousei Yoshida

发明人： Shousei Yoshida

IPC分类号： H04B1/707

CPC分类号： H04B7/0851

摘要： An adaptive antenna reception apparatus includes a multi-beam former (1) provided in common to users, to convert antenna-corresponding spread signals received by antennas of an array antenna into beam-corresponding spread signals. A receiving and demodulating section (2) is provided for one of the users, generates beam-corresponding correlation signals at a path timing from the beam-corresponding spread signals, and generates path signals by weighting the beam-corresponding correlation signals with adaptive weights which are updated adaptively, and produces a demodulation signal for the one user by combining the path signals.

摘要翻译： 自适应天线接收装置包括与用户共同设置的多波束形成器（1），用于将由阵列天线的天线接收的天线对应的扩展信号转换为波束对应的扩展信号。 为用户中的一个提供接收和解调部分（2），在来自波束对应的扩展信号的路径定时处产生波束对应的相关信号，并且通过对具有自适应权重的波束相关相关信号进行加权来生成路径信号， 自适应地进行更新，并且通过组合路径信号来产生用于一个用户的解调信号。

公开(公告)号：US20060182167A1

公开(公告)日：2006-08-17

申请号：US10526225

申请日：2004-04-26

申请人： Yoshikazu Kakura ,  Shousei Yoshida ,  Hiroyuki Atarashi ,  Noriyuki Maeda

发明人： Yoshikazu Kakura ,  Shousei Yoshida ,  Hiroyuki Atarashi ,  Noriyuki Maeda

IPC分类号： H04B1/707

CPC分类号： H04L5/026 ,  H04J11/0036 ,  H04J13/004 ,  H04L27/2613

摘要： A radio transmitter-receiver wherein a pilot symbol is used in the transmitter that has undergone M-chip spreading on the frequency axis and N-chip spreading on the time axis by a spreading code of M×N chip length (where M and N are any integers equal to or greater than 2), and in the receiver, a spreading code that is not used in spreading said pilot signal is used as a despreading code to despread a received signal and then estimate noise and interference power. The spreading code that is used to spread the pilot symbol and the despreading code that is used in despreading are assigned so as to be orthogonal even if only in N chips on the time axis.

摘要翻译： 一种无线电发射机 - 接收机，其中在发射机中使用导频符号，该发射机在频率轴上经历了M码片扩频，并且在时间轴上通过M×N码片长度的扩展码（其中M和N是任何整数）进行N码片扩频 等于或大于2），并且在接收机中，将不用于扩展所述导频信号的扩展码用作解扩码，以对接收信号进行解扩，然后估计噪声和干扰功率。 用于扩展导频符号的扩展码和解扩使用的解扩码被分配为正交，即使只在时间轴上的N个码片。

公开(公告)号：US07069050B2

公开(公告)日：2006-06-27

申请号：US10442190

申请日：2003-05-21

申请人： Shousei Yoshida

发明人： Shousei Yoshida

IPC分类号： H04B1/38 ,  H04M1/00

CPC分类号： H01Q21/08 ,  H01Q1/246 ,  H01Q3/24 ,  H01Q3/26 ,  H04B7/0452 ,  H04B7/0697

摘要： A transmitter of a base station includes a data serial-to-parallel converter, M modulators, M beam formers, and transmission antennas. The data serial-to-parallel converter converts transmission data into M sequences. Each modulator modulates the transmission data. Each beam former weights the modulation signal to form directional beams. The transmission antennas narrow the beams and transmit the modulation signals in parallel (MIMO transmission). In a mobile station, a receiver has reception antennas for receiving data transmitted in parallel and an MIMO demodulator for demodulating the data.

摘要翻译： 基站的发射机包括数据串并转换器，M调制器，M波束形成器和发射天线。 数据串并转换器将传输数据转换为M序列。 每个调制器调制传输数据。 每个波束形成器对调制信号进行加权以形成定向波束。 发射天线将波束变窄并且并行发送调制信号（MIMO传输）。 在移动台中，接收机具有用于接收并行发送的数据的接收天线和用于解调数据的MIMO解调器。

公开(公告)号：US06825808B2

公开(公告)日：2004-11-30

申请号：US10141943

申请日：2002-05-10

申请人： Masayuki Kimata ,  Shousei Yoshida

发明人： Masayuki Kimata ,  Shousei Yoshida

IPC分类号： H01Q324

CPC分类号： H04B7/0865

摘要： In an adaptive array antenna receiving apparatus, signal to interference ratio (SIR) measuring units are provided in signal processing units, respectively. The SIR measuring units measure signal to interference ratios of existing fingers to supply the measured results for an antenna weight succession processing unit. The antenna weight succession processing unit selects one of the existing fingers on the basis of the measured results. The antenna weight succession processing unit extracts antenna weights from one of the signal processing units that corresponds to the selected finger. The antenna weight succession processing unit supplies the extracted antenna weights to a newly assigned finger or one of the existing fingers that path timing is greatly changed.

摘要翻译： 在自适应阵列天线接收装置中，分别在信号处理单元中提供信号干扰比（SIR）测量单元。 SIR测量单元测量现有手指的信号与干扰比，以提供天线权重连续处理单元的测量结果。 天线重量继承处理单元基于测量结果选择现有手指中的一个。 天线权重继承处理单元从对应于所选择的手指的信号处理单元之一提取天线权重。 天线权重继承处理单元将所提取的天线权重提供给新分配的手指或现有手指之一，路径定时大大改变。

公开(公告)号：US06731949B2

公开(公告)日：2004-05-04

申请号：US10082930

申请日：2001-10-19

申请人： Kojiro Hamabe ,  Shousei Yoshida

发明人： Kojiro Hamabe ,  Shousei Yoshida

IPC分类号： H04O720

CPC分类号： H04W52/343 ,  H04W52/346 ,  H04W52/40

摘要： A cellular type mobile communication system comprising a plurality of cells, a plurality of base stations disposed in the respective cells, and a mobile station located in the cells. On reception of a control command for a transmission power from the mobile station, each base station increases or decreases the transmission power in response to the control command. In addition, each base station renews the transmission power so that the transmission power after increased or decreased approaches a predetermined reference power.

摘要翻译： 一种蜂窝型移动通信系统，包括多个小区，多个基站设置在各个小区中，以及位于小区中的移动台。 在接收到来自移动台的发送功率的控制命令时，每个基站响应于控制命令增加或减少发送功率。 此外，每个基站更新发送功率，使得增加或减小的发送功率接近预定参考功率。

公开(公告)号：US06657590B2

公开(公告)日：2003-12-02

申请号：US10161714

申请日：2002-06-05

申请人： Shousei Yoshida

发明人： Shousei Yoshida

IPC分类号： G01S316

CPC分类号： H04B7/0851 ,  H04B7/0885

摘要： An adaptive antenna reception apparatus includes a plurality of receiving sections and a combining unit. Each of the plurality of receiving sections is provided for a corresponding one of paths. The receiving section generates a path-corresponding demodulation signal for the corresponding path and for a corresponding one of arrays of antennas from path-corresponding despread signals for the corresponding path and for the corresponding array using adaptive weights for the corresponding array. The combining unit combines the path-corresponding demodulation signals over all the arrays and all the paths to generate a demodulation signal.

公开(公告)号：US06359864B1

公开(公告)日：2002-03-19

申请号：US09209092

申请日：1998-12-10

申请人： Shousei Yoshida ,  Akihisa Ushirokawa

发明人： Shousei Yoshida ,  Akihisa Ushirokawa

IPC分类号： H04J1300

CPC分类号： H04W52/42 ,  H04B1/707 ,  H04B1/7097 ,  H04B7/061 ,  H04B7/0615 ,  H04B7/0634 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/2628

摘要： An FDD/CDMA transmission/reception system includes a CDMA transmitter and a CDMA receiver. The CDMA transmitter includes a plurality of transmission antennas, signal transmission units for transmitting transmission signals weighted by different values to the respective transmission antennas, and pilot signal transmission units for transmitting a plurality of different pilot signals to the respective transmission antennas. The CDMA receiver includes a reception unit for obtaining one received signal from the transmission signals from the plurality of transmission antennas of the CDMA transmitter in consideration of reception quality, and a unit for transmitting antenna control signals corresponding to reception power values of the received pilot signals to the CDMA transmitter.

摘要翻译： FDD / CDMA发送/接收系统包括CDMA发射机和CDMA接收机。 CDMA发射机包括多个发射天线，用于将由不同值加权的传输信号发射到各个发射天线的信号传输单元，以及用于将多个不同导频信号发射到各个发射天线的导频信号传输单元。 考虑到接收质量，CDMA接收机包括用于从CDMA发射机的多个发送天线的发送信号中获得一个接收信号的接收单元，以及用于发送对应于接收到的导频信号的接收功率值的天线控制信号的单元 到CDMA发射机。

公开(公告)号：US06205166B1

公开(公告)日：2001-03-20

申请号：US09129541

申请日：1998-08-05

申请人： Yasushi Maruta ,  Shousei Yoshida ,  Akihisa Ushirokawa

发明人： Yasushi Maruta ,  Shousei Yoshida ,  Akihisa Ushirokawa

IPC分类号： H04K100

CPC分类号： H04B1/707 ,  H04B7/0851

摘要： In a CDMA receiver, signals from a number of correlatively spaced apart antennas are respectively multiplied by weight coefficients and summed together to produce a weighted sum signal, which is separated into multipath components of a transmitted signal. The multipath components are despread with a chip sequence, producing despread signals at symbol intervals. Demodulators estimate channel responses of propagation paths from the despread signals and multiply the despread signals by the estimated channel responses to produce demodulated signals, which are summed and a threshold decision is made on the sum of the demodulated signals to produce a decision output. Error detection circuitry multiplies the decision output by the estimated channel responses to produce a number of multiplied decision outputs, and detects differences between the multiplied decision outputs and the despread signals to produce a number of error signals, which are combined together. Weight control circuitry is responsive to the combined error signals for updating the weight coefficients.

摘要翻译： 在CDMA接收机中，来自多个相互间隔开的天线的信号分别乘以权重系数并相加在一起以产生加权和信号，该加和和信号被分离成发送信号的多径分量。 多径分量用码片序列解扩展，以符号间隔产生解扩信号。 解调器估计来自解扩信号的传播路径的信道响应，并将解扩信号乘以估计的信道响应以产生解调信号，其被求和，并且对解调信号的和进行阈值判定以产生判定输出。 误差检测电路将判决输出乘以估计的信道响应以产生多个相乘的判决输出，并且检测相乘的判决输出与解扩信号之间的差异，以产生多个误差信号，将它们组合在一起。 权重控制电路响应于用于更新权重系数的组合误差信号。