公开(公告)号：US07551687B2

公开(公告)日：2009-06-23

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： H04K1/02

CPC分类号： H03F1/3247 ,  H03F2201/3233

摘要： 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： 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，在由计算单元计算的失真补偿系数hn + 1（p）被存储在系数存储器中之前，假定将使用失真补偿系数hn + 1（p）进行失真补偿。 然后，预先确定将通过该失真补偿获得的信号x（t）* hn + 1（p）是否将超过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。

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。

公开(公告)号：US06907085B2

公开(公告)日：2005-06-14

申请号：US09805870

申请日：2001-03-14

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

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

IPC分类号： H03F1/32 ,  H04B1/04 ,  H04L27/00 ,  H04L27/20 ,  H04L27/26 ,  H04B15/00

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433

摘要： First, a digital section constituting a linearizer is activated. Then, a feedback loop for updating a distortion compensation coefficient is opened. Then, the analog section on the antenna side is activated from an ADC, including a PA, etc., or a DAC. Then, both the ATT value of an ATT installed in a feedback route for updating the distortion compensation coefficient and the signal delay amount of a signal delay unit are adjusted to make a state such that the distortion compensation coefficient can be accurately updated. Then, the feedback loop is closed, a distortion compensation table having the distortion compensation coefficient as an entry is generated and after the generation is completed, the operation shifts to the normal operation.

摘要翻译： 首先，构成线性化器的数字部分被激活。 然后，打开用于更新失真补偿系数的反馈回路。 然后，天线侧的模拟部分从包括PA等的ADC或DAC激活。 然后，调整安装在用于更新失真补偿系数的反馈路径中的ATT的ATT值和信号延迟单元的信号延迟量，使得能够精确地更新失真补偿系数的状态。 然后，反馈回路闭合，生成具有作为入口的失真补偿系数的失真补偿表，并且在生成完成之后，操作转移到正常操作。

公开(公告)号：US20070110183A1

公开(公告)日：2007-05-17

申请号：US10568334

申请日：2004-03-31

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Tokuro Kubo

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Tokuro Kubo

IPC分类号： H04L25/49

CPC分类号： H04L27/364 ,  H03C3/406 ,  H04L2027/0016 ,  H04L2027/0018 ,  H04L2027/0067 ,  H04L2027/0069

摘要： In an electronic device having a circuit outputting a vector sum of two quadrature vector signals, an offset compensating device compensates the offset contained in the vector sum. The offset compensating device aims to flexibly adapt to deviation in characteristics and performances and various fluctuations, and to compensate offset stably and accurately. The offset compensating device includes a deviation monitor unit creating a vector signal by A/D-converting the aforementioned vector sum and by quadrature-demodulating it and monitoring the deviation of the DC components superposed on the vector signal, and an adaptive control unit updating the compensation vector determined in advance, based on adaptive algorithm minimizing expectation value of the product of the inner product between an increment vector and the compensation vector, and the latest deviation vector, and adding the compensation vector to an offset vector to be inputted, while being superposed on the input signal, to a circuit.

摘要翻译： 在具有输出两个正交矢量信号的向量和的电路的电子设备中，偏移补偿装置补偿矢量和中包含的偏移量。 偏移补偿装置旨在灵活适应特性，性能和各种波动的偏差，并且稳定和准确地补偿偏移。 偏移补偿装置包括：偏差监视器单元，通过对前述矢量和进行A / D转换，并对其进行正交解调并监视叠加在矢量信号上的直流分量的偏差来产生矢量信号;以及自适应控制单元， 基于自适应算法，最小化增量向量与补偿向量之间的内积乘积的最终期望值与最新偏差矢量，并将补偿向量加到要输入的偏移向量的预先确定的补偿向量，同时 叠加在输入信号上的电路。

公开(公告)号：US07848449B2

公开(公告)日：2010-12-07

申请号：US10568334

申请日：2004-03-31

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Tokuro Kubo

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Tokuro Kubo

IPC分类号： H04L25/49

CPC分类号： H04L27/364 ,  H03C3/406 ,  H04L2027/0016 ,  H04L2027/0018 ,  H04L2027/0067 ,  H04L2027/0069

摘要： In an electronic device having a circuit outputting a vector sum of two quadrature vector signals, an offset compensating device compensates the offset contained in the vector sum. The offset compensating device aims to flexibly adapt to deviation in characteristics and performances and various fluctuations, and to compensate offset stably and accurately. The offset compensating device includes a deviation monitor unit creating a vector signal by A/D-converting the aforementioned vector sum and by quadrature-demodulating it and monitoring the deviation of the DC components superposed on the vector signal, and an adaptive control unit updating the compensation vector determined in advance, based on adaptive algorithm minimizing expectation value of the product of the inner product between an increment vector and the compensation vector, and the latest deviation vector, and adding the compensation vector to an offset vector to be inputted, while being superposed on the input signal, to a circuit.

摘要翻译： 在具有输出两个正交矢量信号的向量和的电路的电子设备中，偏移补偿装置补偿矢量和中包含的偏移量。 偏移补偿装置旨在灵活适应特性，性能和各种波动的偏差，并且稳定和准确地补偿偏移。 偏移补偿装置包括：偏差监视器单元，通过对前述矢量和进行A / D转换，并对其进行正交解调并监视叠加在矢量信号上的直流分量的偏差来产生矢量信号;以及自适应控制单元， 基于自适应算法，最小化增量向量与补偿向量之间的内积乘积的最终期望值与最新偏差矢量，并将补偿向量加到要输入的偏移向量的预先确定的补偿向量，同时 叠加在输入信号上的电路。

公开(公告)号：US20050239419A1

公开(公告)日：2005-10-27

申请号：US11166619

申请日：2005-06-24

申请人： Nobukazu Fudaba ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hiroyoshi Ishikawa

发明人： Nobukazu Fudaba ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hiroyoshi Ishikawa

IPC分类号： H01Q21/00 ,  H04B7/10 ,  H04B1/02 ,  H03C7/02 ,  H04B7/02

CPC分类号： H04B17/21 ,  H04B17/12 ,  H04B17/18 ,  H04B17/19

摘要： In an array-antenna-equipped communication apparatus, a part of a transmission signal after passing through a radio wave transmitter is branched by a directional coupler, combined by a combiner, converted to a baseband signal by a receiver for calibration, analog-converted by an analog-to-digital converter, and input to an adaptive controller as a feedback signal. The adaptive controller calculates a calibration value that minimizes the power of an error signal representing a difference between the feedback signal and a reference signal, which is the transmission signal before passing through the radio wave transmitter, and outputs the calibration value to a corrector for calibration.

摘要翻译： 在配有阵列天线的通信装置中，通过无线电波发射机的发送信号的一部分由定向耦合器分支，由组合器组合，由接收机转换为基带信号进行校准，由 模数转换器，并作为反馈信号输入到自适应控制器。 自适应控制器计算校正值，其使表示反馈信号与参考信号之间的差异的误差信号的功率最小化，该参考信号是通过无线电波发射器之前的传输信号，并将校准值输出到校准器 。

公开(公告)号：US06657493B2

公开(公告)日：2003-12-02

申请号：US10116633

申请日：2002-04-04

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

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

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F1/3294

摘要： A distortion compensation apparatus returns a part of an amplified output signal of a power amplifier amplifying a transmission signal, reads a distortion compensation signal from a distortion compensation table, multiplies the transmission signal with the distortion compensation signal thereof, and inputs the signal to the power amplifier. The distortion compensation signal corresponding to a signal calculated based on an error signal that is a difference between the transmission signal and the amplified output signal, the distortion compensation signal from the distortion compensation table and the step size parameter, and to a power of the transmission signal. The distortion compensation apparatus comprises a &mgr; control part including a fast Fourier transformation part that obtains a spectrum of the amplified output signal, a calculation part that calculates an adjacent channel leakage power ratio based on the spectrum, and a &mgr; adjusting part that varies the step size parameter by comparing the calculated adjacent leakage power ratio with a threshold value.

摘要翻译： 失真补偿装置返回放大发送信号的功率放大器的放大输出信号的一部分，从失真补偿表读出失真补偿信号，将发送信号与其失真补偿信号相乘，并将该信号输入到功率 放大器 对应于基于作为发送信号和放大输出信号之间的差的误差信号，来自失真补偿表的失真补偿信号和步长参数而计算出的信号的失真补偿信号，以及发送功率的失真补偿信号 信号。 失真补偿装置包括：mu控制部，包括获取放大的输出信号的频谱的快速傅里叶变换部，基于该频谱计算相邻信道泄漏功率比的计算部;以及改变步骤的mu调整部 通过将计算的相邻泄漏功率比与阈值进行比较来确定尺寸参数。

公开(公告)号：US06836517B2

公开(公告)日：2004-12-28

申请号：US09745948

申请日：2000-12-22

申请人： Kazuo Nagatani ,  Tokuro Kubo ,  Takayoshi Ode ,  Yasuyuki Oishi

发明人： Kazuo Nagatani ,  Tokuro Kubo ,  Takayoshi Ode ,  Yasuyuki Oishi

IPC分类号： H04K102

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F1/3288

摘要： A distortion compensating apparatus for compensating for a distortion of a transmission power amplifier. A delay time decision unit calculates the correlation between a transmission signal and a feedback signal fed back from the output side of the transmission power amplifier while varying phase difference between both signals, and decides the total delay time caused in the transmission power amplifier and a feedback loop on the basis of the phase difference in which the correlation is the maximum. A delay unit delays the transmission signal before a distortion compensation processing by the total delay time, and inputs the delayed signal into a distortion compensating apparatus arithmetic unit, which calculates and stores a distortion compensation coefficient on the basis of the transmission signal and the feedback signal fed back from the output side of the transmission power amplifier. A pre-distortion unit applies a distortion compensation processing to the transmission signal by using the distortion compensation coefficient.

摘要翻译： 一种用于补偿发射功率放大器的失真的失真补偿装置。 延迟时间决定单元计算发送信号与从发送功率放大器的输出侧反馈的反馈信号之间的相关性，同时改变两个信号之间的相位差，并且确定在发送功率放大器中引起的总延迟时间和反馈 基于相关性最大的相位差进行循环。 延迟单元将失真补偿处理之前的发送信号延迟总延迟时间，并将延迟信号输入失真补偿装置运算单元，该运算单元基于发送信号和反馈信号计算并存储失真补偿系数 从发射功率放大器的输出侧反馈。 预失真单元通过使用失真补偿系数对发送信号应用失真补偿处理。

公开(公告)号：US06737918B2

公开(公告)日：2004-05-18

申请号：US10629134

申请日：2003-07-29

申请人： Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Toru Maniwa

发明人： Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Toru Maniwa

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F1/3294 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433 ,  H04L27/368

摘要： An input complex base band signal x(t) is complex-multiplied by a distortion compensation coefficient h(p), quadrature-modulated by a quadrature modulator QMOD, and input into a power amplifier AMP. A part of the output from the power amplifier AMP is input into a band pass filter BPF, the band pass filter BPF extracts an adjacent channel leakage power band, and a power detector detects an adjacent channel leakage power value. A distortion compensation coefficient arithmetic unit GA using a genetic algorithm computes a distortion compensation coefficient based on an adjacent channel leakage power value on an adjacent channel leakage power ratio and an input complex base band signal x(t), and outputs a distortion compensation coefficient h(p) as a function of a power value p of the input complex base band signal.

摘要翻译： 输入复基带信号x（t）被正交调制器QMOD正交调制的失真补偿系数h（p）复乘，并输入到功率放大器AMP。 来自功率放大器AMP的输出的一部分被输入到带通滤波器BPF中，带通滤波器BPF提取相邻信道泄漏功率带，并且功率检测器检测相邻信道泄漏功率值。 使用遗传算法的失真补偿系数算术单元GA根据相邻信道泄漏功率比的相邻信道泄漏功率值和输入复基带信号x（t）计算失真补偿系数，并输出失真补偿系数h （p）作为输入复基带信号的功率值p的函数。

公开(公告)号：US07020447B2

公开(公告)日：2006-03-28

申请号：US10010263

申请日：2001-12-06

申请人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Takayoshi Ode ,  Takeshi Takano ,  Toru Maniwa

发明人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Takayoshi Ode ,  Takeshi Takano ,  Toru Maniwa

IPC分类号： H04B1/04

CPC分类号： H03G5/165 ,  H03F1/3247 ,  H03F1/3258 ,  H03F1/3294 ,  H03F2201/3224 ,  H03F2201/3233

摘要： Distortion compensation coefficients for correcting distortion of a transmission power amplifier are stored in a memory beforehand, a distortion compensation coefficient conforming to powers or amplitudes of a present transmit signal and a past transmit signal is read out of the memory, and distortion compensation processing is applied to the transmit signal using this distortion compensation coefficient. The transmit signal thus subjected to distortion compensation processing is then amplified by the transmission power amplifier and the amplified signal is transmitted, and the distortion compensation coefficient is updated based upon the transmit signal before distortion compensation and an output signal from the transmission power amplifier.