公开(公告)号：US20120252366A1

公开(公告)日：2012-10-04

申请号：US13495733

申请日：2012-06-13

申请人： Tsuguhide AOKI ,  Yasuhiko Tanabe

发明人： Tsuguhide AOKI ,  Yasuhiko Tanabe

IPC分类号： H04B17/00 ,  H04B15/00

CPC分类号： H04B7/0617 ,  H04B17/12

摘要： One embodiment provides a signal processor configured to cooperate with a first apparatus having first and second antennas and a second apparatus having third and fourth antennas, including: first and second calculators for calculating first and second coefficient, respectively; first and second estimators for estimating first and second transfer functions of a path between the first and second apparatuses based on first and second weights; and a third calculator for calculating a third coefficient. The third coefficient is used with the first and second transfer functions for making a transfer function ratio regarding the first antenna, a transfer function ratio regarding the second antenna, a transfer function ratio regarding the third antenna and a fourth transfer function ratio regarding the fourth antenna same as one another.

摘要翻译： 一个实施例提供一种被配置为与具有第一和第二天线的第一装置协作的信号处理器和具有第三和第四天线的第二装置，包括：分别用于计算第一和第二系数的第一和第二计算器; 第一和第二估计器，用于基于第一和第二权重来估计第一和第二设备之间的路径的第一和第二传递函数; 以及用于计算第三系数的第三计算器。 第三系数与第一和第二传递函数一起使用以产生关于第一天线的传递函数比，关于第二天线的传递函数比，关于第三天线的传递函数比和关于第四天线的第四传递函数比 相同。

公开(公告)号：US07903747B2

公开(公告)日：2011-03-08

申请号：US12582336

申请日：2009-10-20

申请人： Tsuguhide Aoki ,  Daisuke Takeda ,  Takahiro Kobayashi ,  Yasuhiko Tanabe

发明人： Tsuguhide Aoki ,  Daisuke Takeda ,  Takahiro Kobayashi ,  Yasuhiko Tanabe

IPC分类号： H04L27/00

摘要： A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal generator generates wireless packet including a short-preamble sequence used for a first automatic gain control (AGC), a first long-preamble sequence, a signal field used for conveying a length of the wireless packet, an AGC preamble sequence used for a second AGC to be performed after the first AGC, a second long-preamble sequence, and a data field conveying data. The AGC preamble sequence is transmitted in parallel by the plurality of antennas.

公开(公告)号：US07773706B2

公开(公告)日：2010-08-10

申请号：US12323246

申请日：2008-11-25

申请人： Yoshimasa Egashira ,  Daisuke Takeda ,  Tsuguhide Aoki ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Daisuke Takeda ,  Tsuguhide Aoki ,  Yasuhiko Tanabe

IPC分类号： H04B7/02 ,  H04B7/08 ,  H04L1/02 ,  H04L27/00

CPC分类号： H04L27/2613 ,  H04B7/0678

摘要： A wireless communication apparatus includes a plurality of antennas, transmits a plurality of known symbol sequences each including a plurality of known symbols by using the antennas, each of the known symbols having subcarrier arrangement on which plural known information of the each of the known symbols are carried on, and inversion/non-inversion of a phase of known information on one of two adjacent subcarriers of the subcarrier arrangement being controlled in accordance with the number of the known symbols and time position of the each of the known symbols, and transmits data symbols by using the antennas after the known symbol sequences are transmitted.

摘要翻译： 无线通信装置包括多个天线，通过使用天线发送多个已知符号序列，每个已知符号序列包括多个已知符号，每个已知符号具有子载波排列，每个已知符号的多个已知信息 并且根据已知符号的数量和每个已知符号的时间位置来控制子载波装置的两个相邻子载波之一上的已知信息的相位的反相/非反相，并且发送数据 在发送已知符号序列之后使用天线的符号。

公开(公告)号：US20090296656A1

公开(公告)日：2009-12-03

申请号：US12472839

申请日：2009-05-27

申请人： Yasuhiko TANABE ,  Tsuguhide Aoki

发明人： Yasuhiko TANABE ,  Tsuguhide Aoki

IPC分类号： H04W36/00 ,  H04L27/28

CPC分类号： H04B7/0617 ,  H04B7/0426 ,  H04B7/0452 ,  H04L5/0007

摘要： A wireless communication apparatus includes a first storage unit configured to store each of a plurality of upper limit values of absolute values of additional signals that are set for a corresponding one of a plurality of first wireless communication apparatuses and are added when a plurality of modulation symbols to be transmitted to the first wireless communication apparatuses are precoded, a coding unit configured to decide each of a plurality of first values of the additional signals for a corresponding one of the first wireless communication apparatuses within ranges defined by the upper limit values, and precode the modulation symbols using the first values to obtain a plurality of transmission signals, and a first transmission unit configured to transmit, using multi-user MIMO (Multiple Input Multiple Output), the transmission signals to the first wireless communication apparatuses.

摘要翻译： 无线通信装置包括：第一存储单元，被配置为存储为多个第一无线通信设备中的相应一个设置的附加信号的绝对值的多个上限值中的每一个，并且当多个调制符号 被发送到第一无线通信装置的编码单元被配置为在由上限值限定的范围内确定第一无线通信装置中的相应一个的附加信号的多个第一值中的每一个，以及预编码 使用第一值的调制符号来获得多个发送信号;以及第一发送单元，被配置为使用多用户MIMO（多输入多输出）来发送到第一无线通信装置的发送信号。

公开(公告)号：US20090154411A1

公开(公告)日：2009-06-18

申请号：US12210646

申请日：2008-09-15

申请人： Shohei Kikuchi ,  Yasuhiko Tanabe

发明人： Shohei Kikuchi ,  Yasuhiko Tanabe

IPC分类号： H04B7/216

CPC分类号： H04B7/0417 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802

摘要： A terminal apparatus includes: a reception unit configured to receive a signal from a base station; a channel estimation unit configured to estimate a state of a channel based on a received signal; a storage configured to store a codebook including channel state values; an index of search number acquisition unit configured to acquire index of search number of candidates to be selected from among the channel state values for a correlation calculation with the estimated state value; a candidate selecting unit configured to select candidates for which the correlation calculation should be performed from among the channel state values according to the index of search number; a correlation calculation unit configured to calculate a correlation between the estimated state value and each of selected candidates; a selection unit configured to select a candidate having a highest correlation value; and a reporting unit configured to report a selected candidate to the base station.

摘要翻译： 终端装置包括：接收单元，被配置为从基站接收信号; 信道估计单元，被配置为基于接收信号来估计信道的状态; 存储器，被配置为存储包括信道状态值的码本; 搜索号码获取单元的索引，被配置为从所述估计状态值的相关计算中获取要从所述信道状态值中选择的候选的搜索数目的索引; 候选选择单元，被配置为根据搜索号的索引从信道状态值中选择应执行相关计算的候选; 相关计算单元，被配置为计算所述估计状态值与所选候选中的每一个之间的相关性; 选择单元，被配置为选择具有最高相关值的候选; 以及报告单元，被配置为向所述基站报告所选择的候选。

公开(公告)号：US20090080567A1

公开(公告)日：2009-03-26

申请号：US12323246

申请日：2008-11-25

申请人： Yoshimasa Egashira ,  Daisuke Takeda ,  Tsuguhide Aoki ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Daisuke Takeda ,  Tsuguhide Aoki ,  Yasuhiko Tanabe

IPC分类号： H04B7/10

CPC分类号： H04L27/2613 ,  H04B7/0678

摘要： A wireless communication apparatus includes a plurality of antennas, transmits a plurality of known symbol sequences each including a plurality of known symbols by using the antennas, each of the known symbols having subcarrier arrangement on which plural known information of the each of the known symbols are carried on, and inversion/non-inversion of a phase of known information on one of two adjacent subcarriers of the subcarrier arrangement being controlled in accordance with the number of the known symbols and time position of the each of the known symbols, and transmits data symbols by using the antennas after the known symbol sequences are transmitted.

摘要翻译： 无线通信装置包括多个天线，通过使用天线发送多个已知符号序列，每个已知符号序列包括多个已知符号，每个已知符号具有子载波排列，每个已知符号的多个已知信息 并且根据已知符号的数量和每个已知符号的时间位置来控制副载波装置的两个相邻子载波之一上的已知信息的相位的反相/非反相，并且发送数据 在发送已知符号序列之后使用天线的符号。

公开(公告)号：US07508878B2

公开(公告)日：2009-03-24

申请号：US11167302

申请日：2005-06-28

申请人： Yoshimasa Egashira ,  Daisuke Takeda ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Daisuke Takeda ,  Yasuhiko Tanabe

IPC分类号： H04B7/02

CPC分类号： H04B7/0691 ,  H04B7/02 ,  H04L27/261

摘要： A wireless communication apparatus having a plurality of antennas for transmitting a known symbol by using a plurality of subcarriers to a receiver, the known symbol including known information, the apparatus includes each of the subcarriers which carries the known information being classified into at least two groups, and a phase control unit configure to control inversion/non-inversion of a phase of the known information carried on two subcarriers which belong to the same group in accordance with notification information to be notified to the receiver.

摘要翻译： 一种具有多个天线的无线通信装置，用于通过使用多个子载波向接收机发送已知符号，所述已知符号包括已知信息，所述装置包括携带已知信息的每个子载波被分类为至少两个组 以及相位控制单元，其被配置为根据要通知给接收机的通知信息来控制属于同一组的两个子载波上携带的已知信息的相位的反相/非反相。

公开(公告)号：US20080298441A1

公开(公告)日：2008-12-04

申请号：US12055047

申请日：2008-03-25

申请人： Shohei Kikuchi ,  Yasuhiko Tanabe

发明人： Shohei Kikuchi ,  Yasuhiko Tanabe

IPC分类号： H04B1/38

CPC分类号： H04B7/0617

摘要： A radio communications apparatus executing transmit beam forming includes a receiver which receives an estimate value of a propagation path response, a computer which calculates a weighting matrix to be used for the transmit beam forming, in accordance with the estimate value, a correcting unit which corrects a component, of components of the weighting matrix, and a beam forming unit which executes beam forming using the weighting matrix corrected by the correcting unit and executes radio transmission.

摘要翻译： 执行发送波束形成的无线电通信装置包括：接收器，其接收传播路径响应的估计值;计算机，其根据估计值计算要用于发射波束形成的加权矩阵;校正单元，其校正 加权矩阵的分量的分量，以及使用由校正单元校正的加权矩阵执行波束形成并执行无线电传输的波束形成单元。

公开(公告)号：US20070201351A1

公开(公告)日：2007-08-30

申请号：US11669478

申请日：2007-01-31

申请人： Yoshimasa EGASHIRA ,  Yasuhiko Tanabe ,  Kazumi Sato

发明人： Yoshimasa EGASHIRA ,  Yasuhiko Tanabe ,  Kazumi Sato

IPC分类号： H04J11/00 ,  H04B3/10

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/0226 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2027/0016 ,  H04L2027/0024

摘要： A wireless communication method includes generating and transmitting an OFDM signal containing a first OFDM symbol possessing a first transmitting pilot signal and a second transmitting pilot signal respectively allocated to a first subcarrier and a second subcarrier being symmetric with respect to a center frequency on a frequency axis, and a second OFDM symbol possessing a third transmitting pilot signal and a fourth transmitting pilot signal respectively allocated to the first subcarrier and the second subcarrier, wherein a difference between a product of a first transmitting pilot signal and a complex conjugate of a fourth transmitting pilot signal and a product of a third transmitting pilot signal and a complex conjugate of a second transmitting pilot signal is non-zero.

摘要翻译： 一种无线通信方法，包括生成和发送包含分别分配给第一子载波的第一OFDM符号的第一OFDM符号和相对于频率轴上的中心频率对称的第二副载波的OFDM信号 以及分别分配给第一子载波和第二副载波的第三发送导频信号和第四发送导频信号的第二OFDM符号，其中，第一发射导频信号与第四发射导频的复共轭的乘积之差 信号和第三发射导频信号与第二发射导频信号的复共轭的乘积不为零。

公开(公告)号：US20070070927A1

公开(公告)日：2007-03-29

申请号：US11428694

申请日：2006-07-05

申请人： Hiroki Shoki ,  Yasuhiko Tanabe

发明人： Hiroki Shoki ,  Yasuhiko Tanabe

IPC分类号： H04B7/00

CPC分类号： H04B7/0417 ,  H04B7/043 ,  H04B7/0626

摘要： A radio communication system includes a plurality of radio communication terminals each of which includes a plurality of first antennas, and a radio communication apparatus including a plurality of second antennas, an acquisition unit configured to acquire a plurality of channel response values between the first antennas and the second antennas, a setting unit configured to set, based on the channel response values, a plurality of MIMO parameters, and a transmission unit configured to perform multicast transmission to each of the radio communication terminals via the second antennas, based on the MIMO parameters. The multicast transmission is performed based on a multiple-input multiple-output (MIMO) transmission scheme. Each of the radio communication terminals further includes a receiving unit which receives data transmitted from the radio communication apparatus by the multicast transmission.

摘要翻译： 无线电通信系统包括多个无线电通信终端，每个无线电通信终端包括多个第一天线，以及包括多个第二天线的无线电通信装置，获取单元，其被配置为获取第一天线之间的多个信道响应值，以及 所述第二天线，设置单元，被配置为基于所述信道响应值来设置多个MIMO参数，以及发送单元，被配置为基于所述MIMO参数来经由所述第二天线向所述无线电通信终端中的每一个执行多播发送 。 基于多输入多输出（MIMO）传输方案来执行多播传输。 每个无线电通信终端还包括接收单元，其接收通过多播传输从无线电通信装置发送的数据。