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89 条记录 (耗时 0.037 秒)

    Adaptive control apparatus
    61.
    发明申请
    Adaptive control apparatus 有权
    自适应控制装置

    公开(公告)号：US20050058220A1

    公开(公告)日：2005-03-17

    申请号：US10976290

    申请日：2004-10-26

    申请人： Kazuo Nagatani ,  Tokuro Kubo ,  Hiroyoshi Ishikawa ,  Yasuyuki Oishi ,  Toru Maniwa ,  Hiroyuki Hayashi ,  Hajime Hamada ,  Nobukazu Fudaba

    发明人： Kazuo Nagatani ,  Tokuro Kubo ,  Hiroyoshi Ishikawa ,  Yasuyuki Oishi ,  Toru Maniwa ,  Hiroyuki Hayashi ,  Hajime Hamada ,  Nobukazu Fudaba

    IPC分类号： H03F1/32 ,  H03F1/34 ,  H04B1/04 ,  H04L27/36 ,  H04L25/03

    CPC分类号： H03F1/32 ,  H03F1/02 ,  H03F1/3247 ,  H03F1/345 ,  H03F3/24 ,  H04B2001/045

    摘要： Disclosed is an adaptive control apparatus having an error calculation unit for calculating the difference between a reference signal and a feedback signal, and an adaptive controller for applying adaptive control so as to diminish the difference and causing the result of adaptive control to be reflected in the reference signal. The adaptive control apparatus has a delay unit for delaying at least one of the reference signal and feedback signal by a set delay time in such a manner that the reference signal and feedback signal will be input simultaneously to the arithmetic unit; a frequency-component detecting unit for detecting a frequency component of the reference signal; a delay-time acquisition unit for acquiring delay time conforming to the frequency component; and a delay-time setting unit for setting the acquired delay time in the delay unit.

    摘要翻译： 公开了一种自适应控制装置，其具有用于计算参考信号和反馈信号之间的差的误差计算单元和用于施加自适应控制的自适应控制器，以便减小差异并使自适应控制的结果反映在 参考信号。 自适应控制装置具有延迟单元，用于将参考信号和反馈信号中的至少一个延迟设定的延迟时间，使得参考信号和反馈信号将同时输入到运算单元; 频率分量检测单元，用于检测参考信号的频率分量; 延迟时间获取单元，用于获取符合频率分量的延迟时间; 以及延迟时间设定单元，用于在所述延迟单元中设置所获取的延迟时间。

    Code multiplexing transmitting apparatus
    62.
    发明授权
    Code multiplexing transmitting apparatus 有权
    码复用发送装置

    公开(公告)号：US06826169B1

    公开(公告)日：2004-11-30

    申请号：US09615862

    申请日：2000-07-13

    申请人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

    发明人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

    IPC分类号： H04L512

    CPC分类号： H04J13/0003 ,  H04B1/707 ,  H04B2201/70706 ,  H04J13/0051 ,  H04J13/18

    摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

    摘要翻译： 扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。 用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。 作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。

    Radio reception system providing improved transmission quality
    65.
    发明授权
    Radio reception system providing improved transmission quality 失效
    无线电接收系统提供改善的传输质量

    公开(公告)号：US6058138A

    公开(公告)日：2000-05-02

    申请号：US870606

    申请日：1997-06-06

    申请人： Hidenobu Fukumasa ,  Yasuyuki Oishi ,  Kazuo Nagatani ,  Hajime Hamada

    发明人： Hidenobu Fukumasa ,  Yasuyuki Oishi ,  Kazuo Nagatani ,  Hajime Hamada

    IPC分类号： H04B7/005 ,  G06F17/15 ,  H04B7/08 ,  H04L1/06 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

    CPC分类号： H04B1/7115 ,  H04B7/0854 ,  H04L1/06 ,  H04B1/709

    摘要： A radio receiver includes a plurality of demodulating units for demodulating a received radio wave received via a plurality of paths so as to produce respective demodulated signals, and combining units for executing a combination process of synchronizing and combining the demodulated signals produced by the plurality of demodulating units, the combining units correlating the demodulated signals produced by the plurality of demodulating units and excluding from a combination process a demodulated signal that meets a predetermined condition based on a predetermined algorithm.

    摘要翻译： 无线接收机包括多个解调单元，用于解调通过多个路径接收的接收的无线电波，以便产生各自的解调信号;以及组合单元，用于执行同步和组合由多个解调产生的解调信号 单元，所述组合单元将由所述多个解调单元产生的解调信号相关，并且从组合处理除了基于预定算法的满足预定条件的解调信号。

    SIR or SNR measurement apparatus
    66.
    发明授权
    SIR or SNR measurement apparatus 失效
    SIR或SNR测量装置

    公开(公告)号：US6028894A

    公开(公告)日：2000-02-22

    申请号：US923839

    申请日：1997-09-04

    申请人： Yasuyuki Oishi ,  Kazuo Nagatani ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

    发明人： Yasuyuki Oishi ,  Kazuo Nagatani ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

    IPC分类号： H04L27/18 ,  H04B1/10 ,  H04B7/005 ,  H04B17/00 ,  H04B17/336 ,  H04J13/00 ,  H04L1/20 ,  H04L5/00

    CPC分类号： H04B1/1027 ,  H04B17/21 ,  H04B17/336 ,  H04L1/20 ,  H04W52/24 ,  H04W52/08

    摘要： SIR measurement for measuring S/N ratio, which is the ratio of a desired signal power to noise power, or S/I ratio, which is the ratio of desired signal power to interference signal power, uses a signal-point position altering unit for taking absolute values of an I component (in-phase component) and Q component (quadrature component) of a received signal to convert the received signal to a signal in the first quadrant of an I-Q orthogonal coordinate system, and for squaring the average value of the converted signal to obtain first average power (desired power) S, a received-power arithmetic unit for calculating the average value of the square of the received signal to obtain second average power, and for subtracting the desired power S from the received power to obtain noise power or interference power I, and a SIR arithmetic unit for calculating S/N ratio or S/I ratio from the desired signal power S and noise power or interference signal power I, and for outputting the ratio calculated.

    摘要翻译： 作为所需信号功率与噪声功率的比值的S / N比的SIR测量值或作为期望信号功率与干扰信号功率之比的S / I比使用信号点位置改变单元 将接收信号的I分量（同相分量）和Q分量（正交分量）的绝对值转换为IQ正交坐标系的第一象限中的信号，并将平均值 转换后的信号获得第一平均功率（期望功率）S，接收功率算术单元，用于计算接收信号的平方的平均值以获得第二平均功率，并且从接收功率中减去所需功率S 获得噪声功率或干扰功率I，以及用于根据期望信号功率S和噪声功率或干扰信号功率I计算S / N比或S / I比的SIR算术单元，并且用于输出比率计算 ed。

    Waveform equalizer using a neural network
    67.
    发明授权
    Waveform equalizer using a neural network 失效
    波形均衡器使用神经网络

    公开(公告)号：US5272723A

    公开(公告)日：1993-12-21

    申请号：US691871

    申请日：1991-04-26

    申请人： Takashi Kimoto ,  Kazuo Asakawa ,  Kazuo Kawabata ,  Yasuyuki Oishi ,  Eisuke Fukuda ,  Takeshi Takano

    发明人： Takashi Kimoto ,  Kazuo Asakawa ,  Kazuo Kawabata ,  Yasuyuki Oishi ,  Eisuke Fukuda ,  Takeshi Takano

    IPC分类号： G06N3/04 ,  H04L25/03 ,  H03H7/30

    CPC分类号： H04L25/03165 ,  G06N3/04 ,  H04L2025/03464

    摘要： A waveform equalizer for equalizing a distorted signal, contains a sampling unit, a time series generating unit, and an equalization neural network unit. The sampling unit samples the level of a distorted signal at a predetermined rate. The time series generating unit serially receives the sampled level and outputs in parallel a predetermined number of the levels which have been last received. The equalization neural network unit receives the outputs of the time series generating unit, and generates an equalized signal of the distorted signal based on the outputs of the time series generating unit using a set of equalization network weights which are preset therein. The waveform equalizer may further contain a distortion characteristic detecting unit, an equalization network weight holding unit, and a selector unit. The distortion characteristic detecting unit detects a distortion characteristic of the distorted signal. The equalization network weight holding unit holds a plurality of sets of equalization network weights each for being set in the equalization neural network unit. The selector unit selects one of the plurality of sets of equalization network weights according to the distortion characteristic which is detected in the distortion characteristic detecting unit, and supplies the selected set in the equalization neural network unit to set the selected set therein.

    Transmission apparatus and distortion compensation method
    69.
    发明授权
    Transmission apparatus and distortion compensation method 有权
    传输装置和失真补偿方法

    公开(公告)号：US08588711B2

    公开(公告)日：2013-11-19

    申请号：US13234665

    申请日：2011-09-16

    申请人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani ,  Yasuyuki Oishi

    发明人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani ,  Yasuyuki Oishi

    IPC分类号： H04B1/04 ,  H03F1/32

    CPC分类号： H03F1/3247 ,  H03F1/3258 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2201/3233 ,  H03M1/0614 ,  H03M1/66 ,  H04B1/0475

    摘要： A transmission apparatus includes an analog digital converter that performs sampling on a demodulated signal obtained by demodulating a part of an output signal, which is produced by amplifying a modulated signal of a baseband signal including a plurality of signals having frequencies separated from each other, at a sampling frequency lower than a frequency of a given intermodulation distortion component and converting the demodulated signal into a digital signal, a detection section that detects an aliasing component of the given intermodulation distortion component produced by the conversion of the analog digital converter, and a distortion compensation section that compensates an input signal to be modulated for the given intermodulation distortion component in accordance with the detected aliasing component.

    摘要翻译： 一种发送装置，包括：模拟数字转换器，对通过解调部分输出信号而获得的解调信号进行采样，所述解调信号是通过放大包括具有彼此分离的频率的多个信号的基带信号的调制信号而产生的， 采样频率低于给定互调失真分量的频率并将解调信号转换为数字信号;检测部分，其检测通过模拟数字转换器的转换产生的给定互调失真分量的混叠分量;以及失真 补偿部分，根据检测到的混叠分量来补偿对于给定的互调失真分量要调制的输入信号。