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    DISTORTION CORRECTION CONTROL APPARATUS AND DISTORTION CORRECTION CONTROL METHOD
    1.
    发明申请
    DISTORTION CORRECTION CONTROL APPARATUS AND DISTORTION CORRECTION CONTROL METHOD 有权
    失真校正控制装置和失真校正控制方法

    公开(公告)号：US20100062733A1

    公开(公告)日：2010-03-11

    申请号：US12567510

    申请日：2009-09-25

    申请人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Yasuyuki Oishi

    发明人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Yasuyuki Oishi

    IPC分类号： H04B1/04

    CPC分类号： H03F1/32 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/19

    摘要： A distortion correction control apparatus is for compensating for a burst distortion of a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a generation unit that generates a distortion correction coefficient having reverse characteristics to the foregoing burst distortion; a unit that multiplies the distortion correction coefficient output from the generation unit by the input signal or adds the distortion correction coefficient output from the generation unit to the input signal, upon reception of burst information notifying of switching between presence and absence of the input signal; and an update unit that updates, based on the input signal and a branch signal fed back as an output signal of the transmission amplifier, parameters of functions used for adaptively generating the distortion correction coefficient, and that inputs the updated parameters to the generation unit.

    摘要翻译： 失真校正控制装置用于补偿由发射目标的输入信号的脉冲串引起的发射放大器的脉冲串失真。 该装置包括产生具有与上述突发畸变相反的特性的失真校正系数的生成单元; 一个单元，用于通过输入信号将从生成单元输出的失真校正系数乘以输入信号，或将从生成单元输出的失真校正系数与输入信号相加，或者将通过输入信号存在与不存在切换之间的突发信息相加; 以及更新单元，其基于所述输入信号和作为所述发送放大器的输出信号反馈的分支信号来更新用于自适应地生成所述失真校正系数的功能的参数，并且将更新的参数输入到所述生成单元。

    Distortion compensating apparatus
    2.
    发明授权
    Distortion compensating apparatus 有权
    失真补偿装置

    公开(公告)号：US07639755B2

    公开(公告)日：2009-12-29

    申请号：US10951040

    申请日：2004-09-22

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

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

    IPC分类号： H04K1/02

    CPC分类号： H03F1/3247 ,  H03F2201/3231 ,  H03F2201/3233

    摘要： A distortion compensating apparatus calculates a distortion compensation coefficient in such a manner that a difference signal between a reference signal, which is a transmit signal, and a feedback signal will be diminished, updates an old distortion compensation coefficient by the calculated distortion compensation coefficient and applies distortion compensation to the transmit signal based upon this distortion compensation coefficient. In this apparatus, a phase correcting interval, which is for correcting the phase difference between the reference signal and the feedback signal, and a distortion compensation coefficient updating interval are generated alternately, a correction is applied so as to null the phase difference in the phase correcting interval, and the distortion compensation coefficient is updated in the distortion compensation coefficient updating interval.

    摘要翻译： 失真补偿装置以这样的方式来计算失真补偿系数，使得作为发送信号的参考信号与反馈信号之间的差信号将被减小，通过计算出的失真补偿系数来更新旧的失真补偿系数并应用 基于该失真补偿系数对发送信号进行失真补偿。 在该装置中，交替地产生用于校正参考信号和反馈信号之间的相位差的相位校正间隔和失真补偿系数更新间隔，进行校正，以使相位中的相位差无效 在失真补偿系数更新间隔中更新失真补偿系数。

    Distortion compensation device
    4.
    发明授权
    Distortion compensation device 失效
    失真补偿装置

    公开(公告)号：US06864745B2

    公开(公告)日：2005-03-08

    申请号：US10687391

    申请日：2003-10-15

    申请人： Takayoshi Ode ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba

    发明人： Takayoshi Ode ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba

    IPC分类号： H03F1/32 ,  H04B1/04 ,  H04B1/62 ,  H04L27/36 ,  H03F1/26

    CPC分类号： H04L27/368 ,  H03F1/3241 ,  H03F1/3247 ,  H03F2201/3233 ,  H04B1/62 ,  H04B2001/0425

    摘要： In a distortion compensation device which uses distortion compensation coefficients to subject distortion compensation processing to an input signal and supply the result of the distortion compensation processing to a distorting device, calculates the distortion compensation coefficients based on the input signal before distortion compensation and the feedback signal fed back from the output side of the distorting device, and stores the calculated distortion compensation coefficients in association with the input signal, (1) the feedback signal is AD-converted; (2) the AD-converted output is subjected to fast Fourier transform (FFT) processing; (3) the FFT calculation result is used to calculate the value of either the signal-to-noise ratio SNR, or the adjacent channel leakage power ratio ACLR, or the noise level; (4) the delay time occurring in the distorting device and feedback loop is adjusted such that the difference between the above calculated value at the current time and the above calculated value at the immediately preceding time is either zero, or is equal to or less than a threshold value; and, (5) this adjustment processing is repeated to determine the accurate delay time, and based on this delay time the timing of each of the portions of the distortion compensation device is adjusted.

    摘要翻译： 在失真补偿装置中，使用失真补偿系数对输入信号进行失真补偿处理，并将失真补偿处理的结果提供给失真装置，基于失真补偿前的输入信号和反馈信号计算失真补偿系数 从失真装置的输出侧反馈，并将计算出的失真补偿系数与输入信号相关联，（1）反馈信号进行AD转换; （2）AD转换输出经受快速傅里叶变换（FFT）处理; （3）FFT计算结果用于计算信噪比SNR或相邻信道泄漏功率比ACLR或噪声电平的值; （4）调整在失真装置和反馈回路中发生的延迟时间，使得当前时间的上述计算值与前一时刻的上述计算值之间的差为零或等于或小于 阈值; 和（5）重复该调整处理以确定准确的延迟时间，并且基于该延迟时间调整失真补偿装置的每个部分的定时。

    Code-division multiplex communication transmitting apparatus and receiving apparatus and method thereof
    5.
    发明授权
    Code-division multiplex communication transmitting apparatus and receiving apparatus and method thereof 失效
    码分复用通信发送装置及其接收装置及方法

    公开(公告)号：US06853631B1

    公开(公告)日：2005-02-08

    申请号：US09415997

    申请日：1999-10-12

    申请人： Michiharu Nakamura ,  Hajime Hamada ,  Yasuyuki Oishi ,  Kazuo Nagatani

    发明人： Michiharu Nakamura ,  Hajime Hamada ,  Yasuyuki Oishi ,  Kazuo Nagatani

    IPC分类号： H04L27/18 ,  H04B1/707 ,  H04J13/00 ,  H04L27/34 ,  H04B7/216

    CPC分类号： H04J13/0003 ,  H04B1/707 ,  H04B2201/70701 ,  H04L27/34

    摘要： A phase θI1, . . . , θQ1, . . . uniquely determined for each channel is assigned to a carrier for each channel used when data I1 . . . , Q1, . . . , to be distributed among different channels are modulated. By appropriately modifying the phase of a carrier for each channel, signal points can be located in a narrower region than in a conventional region, and thereby the difference in amplitude between a signal point with a minimum amplitude and a signal point with a maximum amplitude can be reduced. Thus, the amplitude range of a signal to be covered by an amplifier for transmitting a transmission signal is reduced, and thereby an amplifier with a linearity that is not high can be used for the amplifier. Accordingly, even if the number of signal points increase, there is no need to use a large high-power amplifier, and thereby the small power and small size of the apparatus can be realized.

    摘要翻译： A相位θ1， 。 。 ，thetaQ1，。 。 。 对于每个信道唯一确定的每个信道被分配给用于数据I1时使用的每个信道的载波。 。 。 ，Q1。 。 。 ，被分配在不同的信道之间进行调制。 通过适当地修改每个通道的载波相位，信号点可以位于比常规区域更窄的区域中，从而具有最小振幅的信号点与具有最大振幅的信号点之间的幅度差可以 减少 因此，用于传输发送信号的放大器要覆盖的信号的振幅范围被减小，因此放大器可以使用线性度不高的放大器。 因此，即使信号点的数量增加，也不需要使用大的大功率放大器，从而能够实现装置的小功率和小型化。

    Radiocommunication apparatus, and radiocommunication system
    6.
    发明授权
    Radiocommunication apparatus, and radiocommunication system 失效
    无线电通信装置和无线电通信系统

    公开(公告)号：US06198731B1

    公开(公告)日：2001-03-06

    申请号：US08995252

    申请日：1997-12-19

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

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

    IPC分类号： H04B7216

    CPC分类号： H04B1/707 ,  H04B7/2628

    摘要： There are disclosed a radiocommunication apparatus and a radiocommunication system. There are provided a receiving section capable of receiving a plurality of types of signals which have been spread through use of different spread code information according to a CDMA scheme in a transmitting-side radiocommunication apparatuses; and a spread demodulation section which carries out despread processing for the common signal portions of the plurality of types of signals received by the receiving section through use of a composite spread code formed from a plurality of spread codes. Accordingly, it becomes possible to significantly improve the quality of received signals.

    摘要翻译： 公开了一种无线电通信装置和无线电通信系统。 提供了一种能够在发送侧无线电通信装置中接收根据CDMA方案通过使用不同扩展码信息而扩展的多种类型的信号的接收部分; 以及扩展解调部分，通过使用由多个扩展码形成的复合扩展码，对由接收部分接收的多种类型的信号的公共信号部分进行解扩处理。 因此，可以显着提高接收信号的质量。

    Correlator and delay lock loop circuit
    8.
    发明授权
    Correlator and delay lock loop circuit 失效
    相关器和延迟锁环电路

    公开(公告)号：US07224720B2

    公开(公告)日：2007-05-29

    申请号：US10625337

    申请日：2003-07-22

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

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

    IPC分类号： H04B1/69 ,  H03D3/24

    CPC分类号： H04B1/7075 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7095 ,  H04B2201/70707

    摘要： The present invention reduces the scale of circuitry and shortens the code phase detection time needed to achieve initial synchronization. In a correlator for calculating correlation between a received spreading code contained in a received spread-spectrum signal and a reference spreading code, a combined code generator is included. The combined code generator outputs a combined spreading code by weighting and combining a plurality of phase-shifted reference spreading codes A1–AM. Further, an arithmetic circuit calculates correlation between the received spreading code and the plurality of phase-shifted reference spreading codes simultaneously. A phase detection circuit detects the phase difference between the received spreading code and a reference spreading code, namely the phase of the received spreading code from the results of the arithmetic operation.

    摘要翻译： 本发明减小了电路规模，缩短了实现初始同步所需的码相位检测时间。 在用于计算包含在接收扩展频谱信号中的接收扩展码与参考扩展码之间的相关性的相关器中，包括组合码发生器。 组合代码生成器通过加权和组合多个相移参考扩展码A 1 -M M来输出组合的扩展码。 此外，算术电路同时计算接收的扩展码与多个相移参考扩展码之间的相关性。 相位检测电路从算术运算结果检测接收到的扩展码与参考扩展码之间的相位差，即接收到的扩展码的相位。

    Distortion compensating apparatus
    9.
    发明申请
    Distortion compensating apparatus 失效
    失真补偿装置

    公开(公告)号：US20050226346A1

    公开(公告)日：2005-10-13

    申请号：US11149730

    申请日：2005-06-10

    申请人： Takayoshi Ode ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa

    发明人： Takayoshi Ode ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa

    IPC分类号： H03F1/32 ,  H03F1/34 ,  H03F3/24 ,  H04J1/00 ,  H04J11/00 ,  H04L27/26 ,  H04L27/36 ,  H04L25/03

    CPC分类号： H03F1/3247 ,  H03F2201/3233

    摘要： Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.

    摘要翻译： 公开了一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。 具体地说，在由计算单元计算出的失真补偿系数h N + 1（p）被存储在系数存储器中之前，假定将使用失真补偿执行失真补偿 系数h n + 1（p）。 然后，预先确定将通过该失真补偿获得的信号x（t）* h N + 1（p）将超过DA转换器的极限。 如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。