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：US08842743B2

公开(公告)日：2014-09-23

申请号：US13612592

申请日：2012-09-12

申请人： Tsuguhide Aoki ,  Yuji Tohzaka ,  Yasuhiko Tanabe

发明人： Tsuguhide Aoki ,  Yuji Tohzaka ,  Yasuhiko Tanabe

IPC分类号： H04B3/00 ,  H04W72/04

CPC分类号： H04W72/046

摘要： According to one embodiment, a communication device communicates with N remote units. Each remote unit includes a plurality of antennas, wireless transmitting units, and wireless receiving units. The communication device is provided with a received signal processing unit, to which received signals by a plurality of the wireless receiving units are combined and input, and which specifies the remote unit subjected to interference, and a switch which decreases a reception gain of the wireless receiving unit included in N−1 remote units out of the N remote units in a predetermined measurement section. The received signal processing unit calculates a correlation value between the combined received signals and a reference signal transmitted by a user terminal connected to another base station system in the measurement section and specifies the remote unit subjected to the interference by the second user terminal based on the correlation value.

摘要翻译： 根据一个实施例，通信设备与N个远程单元进行通信。 每个远程单元包括多个天线，无线发射单元和无线接收单元。 通信装置设置有接收信号处理单元，组合并输入多个无线接收单元的接收信号，并指定受到干扰的远程单元，以及降低无线接收增益的开关 在预定测量部分中的N个远程单元中的N-1个远程单元中包括的接收单元。 接收信号处理单元计算组合的接收信号与由测量部连接到另一个基站系统的用户终端发送的参考信号之间的相关值，并且基于第二用户终端指定遭受第二用户终端的干扰的远程单元 相关值。

公开(公告)号：US20060034385A1

公开(公告)日：2006-02-16

申请号：US11200122

申请日：2005-08-10

申请人： Yoshimasa Egashira ,  Daisuke Takeda ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Daisuke Takeda ,  Yasuhiko Tanabe

IPC分类号： H04L1/02

CPC分类号： H04B7/0682 ,  H04B7/0669 ,  H04L27/261

摘要： wireless communication apparatus (transmitter) including a plurality of antennas for transmitting a plurality of known symbol sequences and data symbols, transmits the known symbol sequences, each of the known symbol sequences including a plurality of known symbols, each of the known symbols whose plural known information being carried on a plurality of subcarriers, a phase of last known symbol of the each of the known symbol sequences being rotated, and transmits the data symbols after the known symbol sequences are transmitted.

摘要翻译： 包括用于发送多个已知符号序列和数据符号的多个天线的无线通信装置（发射机）发送已知符号序列，每个已知符号序列包括多个已知符号，每个已知符号具有多个已知符号 信息被携带在多个子载波上，每个已知符号序列的最后一个已知符号的相位被旋转，并且在已知符号序列被发送之后发送数据符号。

公开(公告)号：US20050286651A1

公开(公告)日：2005-12-29

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： H04J99/00 ,  H04B7/02 ,  H04B7/06 ,  H04B7/10 ,  H04L1/02 ,  H04L27/26 ,  H04L27/28

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：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：US08958767B2

公开(公告)日：2015-02-17

申请号：US13422636

申请日：2012-03-16

申请人： Shoji Otaka ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

发明人： Shoji Otaka ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

IPC分类号： H04B1/06 ,  H04W52/02 ,  H03L7/08 ,  H03L7/197 ,  H04L25/02 ,  H04L27/38

CPC分类号： H04W52/0274 ,  H03L7/0802 ,  H03L7/1976 ,  H03L2207/50 ,  H04L25/0292 ,  H04L27/38 ,  H04L27/3818 ,  H04W52/0229 ,  Y02D70/142

摘要： A radio apparatus includes an antenna; an amplifier that amplifies a radio signal, received via the antenna; a first mixer that frequency converts the amplified radio signal to generate a first analog signal; a first A/D converter that converts the first analog signal to generate a first digital signal; a second mixer that frequency converts the amplified signal to generate a second analog signal; a second A/D converter means that converts the second analog signal to generate a second digital signal; a demodulator means that demodulates the first and second digital signals to generate a demodulated signal; a detector that detects a preamble from the first digital signal; and a control means that halts the second mixer and second A/D converter during the wait for the radio signal and that activates the second mixer and second A/D converter when the detector detects the preamble.

摘要翻译： 无线电设备包括天线; 放大器，放大经由天线接收的无线电信号; 第一混频器，其对放大的无线电信号进行频率转换以产生第一模拟信号; 第一A / D转换器，其转换第一模拟信号以产生第一数字信号; 第二混频器，其对放大的信号进行频率转换以产生第二模拟信号; 第二A / D转换器，用于转换第二模拟信号以产生第二数字信号; 解调器装置，解调第一和第二数字信号以产生解调信号; 检测器，其从所述第一数字信号检测前导码; 以及控制装置，其在等待无线电信号期间停止第二混频器和第二A / D转换器，并且当检测器检测到前导码时激活第二混频器和第二A / D转换器。

公开(公告)号：US20120214434A1

公开(公告)日：2012-08-23

申请号：US13421391

申请日：2012-03-15

申请人： Shoji OTAKA ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

发明人： Shoji OTAKA ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

IPC分类号： H04B7/12 ,  H04B7/00 ,  H04B7/08

CPC分类号： H03L7/18 ,  H03L7/0802 ,  H04L27/38 ,  H04L27/3818 ,  H04W52/0229 ,  H04W52/0274 ,  Y02D70/142

摘要： A radio apparatus includes a first receiver that is a processing unit for amplifying and frequency converting a radio signal received via an antenna, thereby outputting an IF signal; a detector unit for detecting a preamble signal from the IF signal; a second receiver for amplifying and quadrature demodulating the radio signal, thereby generating an I-signal and a Q-signal; a demodulator unit for demodulating the I-signal and Q-signal to generate a data signal; and a control unit for halting the operation of the first receiver and further activating the second receiver when the detector unit detects the preamble signal and for activating the first receiver and halting the operation of the second receiver when the demodulator unit completes the demodulation of the I-signal and Q-signal.

摘要翻译： 无线电设备包括：第一接收机，其是用于放大和频率转换经由天线接收的无线电信号的处理单元，从而输出IF信号; 检测单元，用于检测来自IF信号的前置信号; 第二接收机，用于放大和正交解调无线电信号，由此产生I信号和Q信号; 解调器单元，用于解调I信号和Q信号以产生数据信号; 以及控制单元，用于当所述检测器单元检测到所述前导信号并激活所述第一接收机并且当所述解调器单元完成所述I的解调时停止所述第二接收机的操作时，停止所述第一接收机的操作并进一步激活所述第二接收机 信号和Q信号。

公开(公告)号：US07649832B2

公开(公告)日：2010-01-19

申请号：US11824028

申请日：2007-06-29

申请人： Yoshimasa Egashira ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Yasuhiko Tanabe

IPC分类号： H04J11/00

CPC分类号： H04L27/2647 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/261

摘要： A receiving method receiving an OFDM signal including a first OFDM symbol having first and second pilot signals allocated to first and second subcarriers positioned symmetric on the frequency axis, and a second OFDM symbol having third and fourth pilot signals allocated to the first and the second subcarriers, a difference between a product of the first pilot signal and a complex conjugate of the fourth pilot signal and a product of the third pilot signal and a complex conjugate of the second pilot signal being non-zero, estimating a first coefficient representing a change components of an amplitude and a phase, and a second coefficient representing an interference component, using first and second received pilot signals corresponding to the first and third pilot signals, estimating from the first and second coefficients IQ imbalance, and compensating the influence of amplitude and phase errors in accordance with the IQ imbalance.

摘要翻译： 一种接收OFDM信号的接收方法，包括具有分配给频率轴上对称的第一和第二子载波的第一和第二导频信号的第一OFDM符号，以及分配给第一和第二子载波的第三和第四导频信号的第二OFDM符号 ，第一导频信号的乘积与第四导频信号的复共轭与第三导频信号的乘积与第二导频信号的复共轭之间的差为零，估计表示变化分量的第一系数 使用表示干扰分量的第二系数，使用与第一和第三导频信号对应的第一和第二接收导频信号，从第一和第二系数IQ不平衡估计，并补偿振幅和相位的影响 按照IQ失调的误差。

公开(公告)号：US20070147527A1

公开(公告)日：2007-06-28

申请号：US11641726

申请日：2006-12-20

申请人： Yoshimasa Egashira ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Yasuhiko Tanabe

IPC分类号： H04K1/10

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2613 ,  H04L2025/03426

摘要： A transmitting method of OFDM signal includes allocating first and second channel estimation preamble signals for channel response estimation respectively to +kth and −kth subcarriers from center frequency of first OFDM signal, allocating first and second pilot signals for residual phase offset estimation respectively to +kth and −kth subcarriers from center frequency of second OFDM signal, transmitting first and second OFDM signals respectively in different time zones using at least one antenna, where, first product of complex conjugate of first channel estimation preamble signal and second pilot signal is equal to second product of second channel estimation preamble signal and complex conjugate of first pilot signal.

摘要翻译： OFDM信号的发送方法包括从第一OFDM信号的中心频率向第k个和第k个子载波分别分配用于信道响应估计的第一和第二信道估计前导信号，分别将残差相位偏移估计的第一和第二导频信号分配到第k个 并且使用至少一个天线分别在不同的时间区域中发射第一和第二OFDM信号，其中，第一信道估计前导信号和第二导频信号的复共轭的第一乘积等于第二个OFDM信号 第二信道估计前导信号的乘积和第一导频信号的复共轭。

公开(公告)号：US20060153062A1

公开(公告)日：2006-07-13

申请号：US11313834

申请日：2005-12-22

申请人： Yasuhiko Tanabe ,  Shuichi Obayashi

发明人： Yasuhiko Tanabe ,  Shuichi Obayashi

IPC分类号： H04J11/00

CPC分类号： H04L27/2608 ,  H04L1/0045 ,  H04L1/0057 ,  H04L25/0204

摘要： Radio communication apparatus includes unit dividing transmit data into first-and-second streams, unit subjecting first-and-second streams to serial-to-parallel conversion to obtain data signals, unit modulating data signals into OFDM-modulation signals corresponding to first and second streams using subcarriers, unit acquiring channel responses between communication and receiving apparatuses, unit computing singular values λ1(k) and λ2(k) of channel matrix corresponding to kth subcarrier in subcarriers, based on channel responses, unit assigning weights corresponding to singular values λ1(k) and λ2(k) to first-and-second streams where correspondence of weights to streams is different by subcarrier, unit multiplying, by each of assigned weights, OFDM-modulation signals corresponding to each of first and second streams, and acquire first-and-second signals corresponding to first-and-second streams, unit adding first-and-second signals to acquire added signals, unit subjecting added signals to inverse-Fourier transform, and unit transmitting, to receiving apparatus, signals output from subjecting unit.

摘要翻译： 无线电通信装置包括将发送数据分成第一和第二流的单元，将第一和第二流串行到并行转换单元，以获得数据信号，将数据信号单元调制成对应于第一和第二流的OFDM调制信号 使用子载波的流，在通信和接收设备之间获取信道响应的单元，单元计算奇异值λ1（k）＆lt; 2＆gt;＆lt; 2＆gt; （k）对应于子载波中的第k个子载波的信道矩阵，基于信道响应，对应于奇异值λ1的单位分配权重（＆lt; 1＆gt; 其中对于流的权重与流的对应关系通过子载波，单位乘以不同的第一和第二流， 分配权重，对应于第一和第二流中的每一个的OFDM调制信号，并获取对应的第一和第二信号 到第一和第二流，单元添加第一和第二信号以获取附加信号，对附加信号进行傅立叶逆变换单元，以及向接收装置发送从经受单元输出的信号的单元发送。