公开(公告)号：US08942310B2

公开(公告)日：2015-01-27

申请号：US13881569

申请日：2011-11-29

申请人： Tetsuhiko Miyatani ,  Toshifumi Sato

发明人： Tetsuhiko Miyatani ,  Toshifumi Sato

IPC分类号： H04L27/00 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0408 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0691 ,  H04B7/10

摘要： Transmission channel estimation is performed for NT×NR reception signals and estimated transmission channel values are thereby output. The estimated transmission channel values are divided into N groups of NT×M estimated transmission channel values and a covariance matrix with M rows and N columns is obtained for each of the estimated transmission channel value groups. The N covariance matrixes are averaged over a predetermined range in terms of at least a time or a frequency (first averaging). Eigenvectors are generated based on respective N averaging outputs. Transmission channels between base station antennas and terminal antennas are generated from the eigenvectors and the estimated transmission channel values. Covariance matrixes are obtained for the generated transmission channels. The covariance matrixes are averaged over a different range from the range used in the first averaging (second averaging) and a beam forming weight is obtained by combining the generated eigenvectors.

摘要翻译： 对NT×NR个接收信号进行发送信道估计，从​​而输出估计的发送信道值。 估计的传输信道值被划分成N组的NT×M个估计的传输信道值，并且对于每个估计的传输信道值组获得具有M行和N列的协方差矩阵。 在至少一个时间或频率（第一平均）方面，N个协方差矩阵在预定范围内被平均化。 基于相应的N个平均输出产生特征向量。 基站天线和终端天线之间的传输信道是从特征向量和估计的传输信道值产生的。 对于所生成的传输信道获得协方差矩阵。 协方差矩阵在与第一平均（第二平均）中使用的范围不同的范围内进行平均，并且通过组合生成的特征向量来获得波束形成权重。

公开(公告)号：US08488653B2

公开(公告)日：2013-07-16

申请号：US12253670

申请日：2008-10-17

申请人： Tetsuhiko Miyatani

发明人： Tetsuhiko Miyatani

IPC分类号： H03K11/00 ,  H04L25/60 ,  H04L25/64

CPC分类号： H04L25/24 ,  H04B7/022 ,  H04B7/026 ,  H04L1/0045 ,  H04L27/2601 ,  H04L2001/0097 ,  H04W88/04

摘要： A cooperative communication system and method is provided. A cooperative communication relay station includes a signal receiving unit which receives a source signal from a source node and a multiple relaying signal relayed by a neighboring relay station, a signal generation unit which generates a first relay signal and a second relay signal, the first relay signal being generated by performing a decode-and forward scheme with respect to the multiple relaying signal and the second relay signal being generated by performing an amplify-and-forward scheme with respect to the source signal, and a signal transmission unit which transmits the first relay signal and the second relay signal to a destination node.

摘要翻译： 提供了一种协作通信系统和方法。 协作通信中继站包括信号接收单元，其接收源节点的源信号和由相邻中继站中继的多中继信号，产生第一中继信号和第二中继信号的信号产生单元，第一中继 通过对相对于所述多个中继信号执行解码转发方案和通过对所述源信号执行放大转发方案而产生的所述第二中继信号来生成信号;以及信号发送单元，其发送所述第一 中继信号和第二中继信号发送到目的地节点。

公开(公告)号：US08094708B2

公开(公告)日：2012-01-10

申请号：US12195100

申请日：2008-08-20

申请人： Tetsuhiko Miyatani

发明人： Tetsuhiko Miyatani

IPC分类号： H03H7/30

CPC分类号： H04L25/0246 ,  H04L25/03159 ,  H04L2025/03426

摘要： Provided are a multiple antenna receiver and a method of receiving a signal. A multiple antenna receiver includes a plurality of antennas to receive a plurality of received symbols, a QR decomposition unit to perform QR decomposition for a channel matrix, a Q-received symbol generator to generate Q-received symbols corresponding to the plurality of antennas, a subtractor to remove a component corresponding to at least one neighbor symbol from a target received symbol corresponding to one of the Q-received symbols, an adder to add a signal component to the target received symbol, a first FDE to perform frequency domain equalization for an output of the subtractor, and a second FDE to perform frequency domain equalization for an output of the adder.

摘要翻译： 提供了一种多天线接收机和一种接收信号的方法。 多天线接收机包括用于接收多个接收符号的多个天线，用于对信道矩阵执行QR分解的QR分解单元，产生对应于多个天线的Q接收符号的Q接收符号发生器， 减法器，用于从对应于所述Q接收符号之一的目标接收符号中去除对应于至少一个相邻符号的分量;加法器，用于向所述目标接收符号添加信号分量;第一FDE，用于为 减法器的输出，以及用于对加法器的输出执行频域均衡的第二FDE。

公开(公告)号：US07561629B2

公开(公告)日：2009-07-14

申请号：US11250951

申请日：2005-10-14

申请人： Tetsuhiko Miyatani ,  Takashi Okada

发明人： Tetsuhiko Miyatani ,  Takashi Okada

IPC分类号： H04K1/10

CPC分类号： H04L27/2626 ,  H04L5/06 ,  H04L27/2637 ,  H04L27/266 ,  H04L27/2662

摘要： A multicarrier receiver that receives N carrier frequencies therein comprises N A/D converters each of which analog-digital converts a receive signal at a sample rate fs for each carrier, N quadrature detectors which receive outputs sent from the N A/D converters therein and digitally quadrature-detect the outputs, respectively, 2N LPFs which allow only desire bands of outputs of the N quadrature detectors to pass therethrough, and N delay time correcting means each of which corrects a processing delay time deviation for each carrier inside the multicarrier receiver in a time unit of less than 1/fs using a fractional delay filter. The delay time correcting means has, for example, an M-stage shift register which operates at fs and generates a delay of M/fs, and a fractional delay filter which operates at fs and includes an even number of tap coefficients and which generates a delay different from M/fs by 0.5/fs.

摘要翻译： 接收N个载波频率的多载波接收机包括NA / D转换器，每个转换器以每个载波的采样率fs模拟数字转换接收信号，接收从其中的NA / D转换器发送的输出的数字正交的N个正交检测器 分别检测输出，2N个LPF，其仅允许N个正交检测器的输出的期望频带通过;以及N个延迟时间校正装置，每个延迟时间校正装置在一个时间内校正多载波接收机内的每个载波的处理延迟时间偏差 使用小数延迟滤波器小于1 / fs的单位。 延迟时间校正装置具有例如以fs操作并产生M / fs的延迟的M级移位寄存器，以及在fs处操作并包括偶数个抽头系数的分数延迟滤波器，并产生 延迟不同于M / fs 0.5 / fs。

公开(公告)号：US07398064B2

公开(公告)日：2008-07-08

申请号：US11077142

申请日：2005-03-11

申请人： Tetsuhiko Miyatani

发明人： Tetsuhiko Miyatani

IPC分类号： H01Q11/12 ,  H04B1/04

CPC分类号： H03F1/26 ,  H03F1/0205 ,  H03F1/0266

摘要： The present invention provides a transmitting apparatus equipped with a modulator, a frequency converter that up-converts a modulated signal (or digital IF signal) of a baseband, and an amplifier that amplifies a transmit signal lying in a radio frequency band to a desired signal level. In the transmitting apparatus, a controller including a level determinater and a bias setter is provided with a limiter setter. The level determinater and bias setter of the controller setter perform dynamic bias control of the amplifier. Further, the limiter setter changes the setting of a threshold value of the limiter according to an average level of an input signal.

摘要翻译： 本发明提供了一种配备有调制器的发送装置，对基带的调制信号（或数字IF信号）进行上变频的频率转换器以及将无线电频带中的发送信号放大到期望信号的放大器 水平。 在发送装置中，包括电平确定器和偏置设定器的控制器设置有限幅器设定器。 控制器设置器的电平确定器和偏置设置器执行放大器的动态偏置控制。 此外，限幅器设定器根据输入信号的平均电平改变限幅器的阈值的设定。

公开(公告)号：US20080068080A1

公开(公告)日：2008-03-20

申请号：US11795989

申请日：2006-08-10

申请人： Tetsuhiko Miyatani ,  Masashi Naito ,  Naoki Hongo ,  Takashi Okazaki

发明人： Tetsuhiko Miyatani ,  Masashi Naito ,  Naoki Hongo ,  Takashi Okazaki

IPC分类号： H03F1/26

CPC分类号： G01R23/20 ,  H03F1/32 ,  H03F1/3247 ,  H03F2200/102 ,  H03F2200/207

摘要： The invention provides a spectrum analyzing method, a distortion detector and a distortion compensation amplifying device for performing time/frequency conversion processing at high speed, and reducing a convergent time of a compensation coefficient. The distortion detector for detecting distortion in a frequency area with respect to an input signal includes a time window processing section for multiplying the input signal by a time window; an averaging processing section for averaging an output of the time window processing section; an FFT processing section 52 for converting an output of the averaging processing section from a time area to a frequency area; and a distortion extracting section 53 for extracting a distortion component from an output of the FFT processing section 52.

摘要翻译： 本发明提供一种用于高速进行时间/频率转换处理的频谱分析方法，失真检测器和失真补偿放大装置，并减少补偿系数的收敛时间。 用于检测相对于输入信号的频率区域中的失真的失真检测器包括用于将输入信号乘以时间窗口的时间窗处理部分; 平均处理部分，用于对时间窗处理部分的输出进行平均; FFT处理部分52，用于将平均处理部分的输出从时间区域转换为频率区域; 以及用于从FFT处理部分52的输出中提取失真分量的失真提取部分53。

公开(公告)号：US06856196B2

公开(公告)日：2005-02-15

申请号：US10600594

申请日：2003-06-23

申请人： Yoichi Okubo ,  Kiyoshi Funada ,  Yasuo Sera ,  Masaki Suto ,  Masato Horaguchi ,  Kazuyoshi Sato ,  Toshio Takada ,  Tetsuhiko Miyatani ,  Naoki Hongo

发明人： Yoichi Okubo ,  Kiyoshi Funada ,  Yasuo Sera ,  Masaki Suto ,  Masato Horaguchi ,  Kazuyoshi Sato ,  Toshio Takada ,  Tetsuhiko Miyatani ,  Naoki Hongo

IPC分类号： H03F1/32 ,  H04B1/04 ,  H03G3/20 ,  H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F2200/102

摘要： A distortion compensator that compensates for distortion arising in a main amplifier 10 that amplifies a signal effectively compensates for third order distortion which is unbalanced between the higher frequency band and lower frequency band. An amplitude detector 3 detects the level of a signal subject to amplification and a signal level change direction detection means 7 detects the direction of change in the level of the signal. A signal level change control means 4-8 stores the correspondence between the signal level and the mode of changing the signal in order to compensate for distortion for when the direction of change in the signal level is positive and when it is negative, and controls a signal change means 9 so that the amplitude and phase of the signal is changed in a mode of changing the signal corresponding to the detected direction of change in the signal level and the detected signal level. A signal change control content updating means 11-13 updates the content of this correspondence so that the distortion contained in the signal after amplification is reduced.

摘要翻译： 补偿放大信号的主放大器10中出现的失真的失真补偿器有效地补偿在较高频带和较低频带之间不平衡的三阶失真。 振幅检测器3检测经放大的信号的电平，信号电平变化方向检测装置7检测信号电平的变化方向。 信号电平变化控制装置4-8存储信号电平和改变信号的模式之间的对应关系，以便当信号电平的变化方向为正时和当它为负时补偿失真，并且控制一个 信号改变装置9，使得信号的幅度和相位在改变与检测到的信号电平方向和检测信号电平相对应的信号的模式下改变。 信号改变控制内容更新装置11-13更新该对应的内容，使得放大后的信号中包含的失真减少。

公开(公告)号：US08351547B2

公开(公告)日：2013-01-08

申请号：US12798301

申请日：2010-03-31

申请人： Tetsuhiko Miyatani

发明人： Tetsuhiko Miyatani

IPC分类号： H03K9/00

CPC分类号： H04J11/0063 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0216 ,  H04L25/0228 ,  H04L27/2636 ,  H04L27/265 ,  H04L27/2662 ,  H04L27/2676 ,  H04L2025/03414 ,  H04L2025/03426

摘要： A wireless communication device and method are capable of detecting a receive timing of a direct wave at higher precision without increasing transmit power. A signal receiver receives a signal having a center frequency changed in a predetermined rule at predetermined time intervals. A time-frequency transformer transforms the received signal from a time domain to a frequency domain. A filter removes frequency-domain signal components unused during reception, based on the predetermined rule, from the frequency-domain signal. A reverse modulator performs a reverse modulation process on the remaining signal components. A signal adder generates an added signal by performing accumulative addition on the signal components that underwent the reverse modulation process in the reverse modulator for a predetermined period. A direct wave arrival time determiner determines an arrival time of a direct wave according to an impulse response obtainable from an output of the frequency-time transformer.

摘要翻译： 无线通信装置和方法能够以更高的精度检测直接波的接收定时，而不增加发射功率。 信号接收机以预定的时间间隔接收以预定规则改变的中心频率的信号。 时频变压器将接收到的信号从时域变换为频域。 滤波器根据来自频域信号的预定规则，去除接收期间未使用的频域信号分量。 反向调制器对剩余的信号分量执行反向调制处理。 信号加法器通过对在反向调制器中进行反向调制处理的信号分量执行累加相加预定周期来生成相加信号。 直接波到达时间确定器根据从频率 - 时间变换器的输出可获得的脉冲响应确定直接波的到达时间。

公开(公告)号：US06983173B2

公开(公告)日：2006-01-03

申请号：US10180506

申请日：2002-06-27

申请人： Tetsuhiko Miyatani

发明人： Tetsuhiko Miyatani

IPC分类号： H04M1/00

CPC分类号： H01Q1/246 ,  H01Q3/2605 ,  H01Q21/29

摘要： A telecommunications device is provided that enables monitoring of the directivity of a wireless communications system that wirelessly transmits signals using multiple communications antennas while controlling the overall directivity of the multiple antennas. At least one monitor antenna, installed separately from multiple communications antennas controlled to achieve a prescribed overall directivity, wirelessly receives signals from the multiple communications antennas. A directivity information acquisition mechanism uses the signals received by the monitor antenna to acquire information regarding the overall directivity of the multiple communications antennas. The directivity information acquired by the directivity information output mechanism is output to an external achieved directivity accuracy monitoring mechanism, and the achieved directivity accuracy monitoring mechanism monitors the accuracy of achieved overall directivity of the multiple communications antennas based on a difference between the directivity information and directivity information predicted to be acquired when a prescribed directivity is achieved.

摘要翻译： 提供一种电信设备，其能够监视无线通信系统的方向性，无线通信系统使用多个通信天线无线地传输信号，同时控制多个天线的整体方向性。 与被控制以实现规定的整体方向性的多个通信天线分开安装的至少一个监视器天线从多个通信天线无线地接收信号。 方向性信息获取机构使用由监视天线接收的信号来获取关于多个通信天线的整体方向性的信息。 由方向性信息输出机构获取的方向性信息被输出到外部实现的方向性精度监视机构，并且所实现的方向性精度监视机构基于方向性信息和方向性之间的差异来监视多个通信天线实现的整体方向性的准确度 当达到规定的方向性时预测获得的信息。

公开(公告)号：US20050063485A1

公开(公告)日：2005-03-24

申请号：US10940956

申请日：2004-09-15

申请人： Norio Hasegawa ,  Tetsuhiko Miyatani ,  Yoshihiko Akaiwa

发明人： Norio Hasegawa ,  Tetsuhiko Miyatani ,  Yoshihiko Akaiwa

IPC分类号： H04B1/04 ,  H04J13/00 ,  H04K1/02 ,  H04L27/26 ,  H04L27/36

CPC分类号： H04B1/707 ,  H04B2201/70706 ,  H04L27/2614

摘要： A transmitter that effectively suppresses the peak level of transmit signals is equipped with peak reduction signal generating means that generates a peak reduction signal having a level based on a transmit signal level threshold for determining a peak of the transmit signal and on a transmit signal peak level and having a phase based on the phase of the transmit signal, peak reduction signal processing means that subjects the peak reduction signal to band restriction and orthogonal modulation, and transmit signal level suppressing means that subtracts the peak reduction signal subjected to band restriction and orthogonal modulation from the transmit signal.

摘要翻译： 有效地抑制发射信号的峰值电平的发射机配备有峰值降低信号发生装置，其产生具有基于发射信号电平阈值的电平的峰值降低信号，用于确定发射信号的峰值和发射信号峰值电平 并且具有基于发送信号的相位的相位，使峰值降低信号进行频带限制和正交调制的峰值降低信号处理装置，以及减去经受带限制和正交调制的峰值降低信号的发送信号电平抑制装置 从发送信号。