公开(公告)号：US08314656B2

公开(公告)日：2012-11-20

申请号：US13033279

申请日：2011-02-23

申请人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi

发明人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H03F1/32

CPC分类号： H03F1/3282 ,  H03F1/3247 ,  H03F1/3258

摘要： Coefficients W0, W1 and W2 to be used in finding a new quadratic function f2(W) indicating dependence of a distortion component on an coefficient by the least square method are obtained as values that satisfy a relational expression f1(W0)=f1(W2)=f1(W1)+P (where P is a true value) on the basis of a quadratic function f1(W) indicating unupdated distortion component coefficient dependence.

摘要翻译： 作为满足关系式f1（W0）= f1（W2）的值，求出用于求出表示失真分量对系数的最小二乘法的相关性的新的二次函数f2（W）的系数W0，W1，W2 ）= f1（W1）+ P（其中P是真值），其基于表示未更新的失真分量系数依赖性的二次函数f1（W）。

公开(公告)号：US08184739B2

公开(公告)日：2012-05-22

申请号：US12782168

申请日：2010-05-18

申请人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi

发明人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H04K1/02

CPC分类号： H03F1/3247 ,  H03F1/3258

摘要： A power series digital predistorter includes a combiner which combines an output from a linear transmission path with an output from an odd-order distortion generating path, an analog-to-digital converter which converts a feedback signal from an output of a power amplifier to a digital feedback signal, an odd-order distortion vector control part which controls vector adjustment performed by an odd-order distortion vector adjusting part in the odd-order distortion generating path, a cancellation signal generating part which generates a cancellation signal from an input transmission signal, a combiner which is inserted in a feedback signal path and which combines the cancellation signal with a signal from the feedback signal path, and a cancellation signal control part which controls the cancellation signal generating part so that the cancellation signal suppresses a main signal component in the feedback signal at the combiner.

摘要翻译： 功率系列数字预失真器包括组合器，其将来自线性传输路径的输出与来自奇数阶失真产生路径的输出组合，模数转换器，其将来自功率放大器的输出的反馈信号转换为 数字反馈信号，奇数失真矢量控制部，其控制由奇数失真生成路径中的奇数阶失真矢量调整部执行的矢量调整;消除信号生成部，其从输入的发送信号生成消除信号 ，组合器，其插入在反馈信号路径中并将抵消信号与来自反馈信号路径的信号组合;以及消除信号控制部分，其控制消除信号产生部分，使得抵消信号抑制主信号分量 组合器的反馈信号。

公开(公告)号：US08594231B2

公开(公告)日：2013-11-26

申请号：US12868063

申请日：2010-08-25

申请人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi

发明人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H04K1/02 ,  H04L25/49

CPC分类号： H03F1/3247 ,  H03F1/3294

摘要： A power series digital predistorter and a distortion compensation control method for the power series digital predistorter are capable of adjusting the coefficients of a frequency characteristic compensator at high speed. A controller in the power series digital predistorter collectively sets adjustment amounts for the phases in bands in an N-th order frequency characteristic compensator; collectively sets adjustment amounts for the amplitudes in the bands in the N-th order frequency characteristic compensator; determines whether an index indicating the degree of cancellation of a distortion component generated in a power amplifier satisfies a preset condition; and, if the index does not satisfy the condition, performs control such that the adjustment amounts for the phases and the adjustment amounts for the amplitudes are set again.

摘要翻译： 功率系列数字预失真器和功率级数字预失真器的失真补偿控制方法能够高速调整频率特性补偿器的系数。 功率系列数字预失真器中的控制器共同设定N阶频率特性补偿器中的频带中的相位的调整量; 共同设定N阶频率特性补偿器中的频带中的振幅的调整量; 确定指示在功率放大器中产生的失真分量的消除程度的指标是否满足预设条件; 并且如果索引不满足条件，则进行控制，使得相位的调整量和振幅的调整量再次被设定。

公开(公告)号：US20130141160A1

公开(公告)日：2013-06-06

申请号：US13816519

申请日：2012-02-13

申请人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi ,  Takayuki Furuta

发明人： Junya Ohkawara ,  Yasunori Suzuki ,  Shoichi Narahashi ,  Takayuki Furuta

IPC分类号： H03F1/32

CPC分类号： H03F1/3247 ,  H03F1/3241 ,  H03F3/189 ,  H03F3/24 ,  H04B2001/0425 ,  H04L27/368

摘要： A PAPR observation unit that measures PAPR in a distributed output of an input signal and PAPR in a combined output of a linear transmission path and a third order distortion generation path, a distortion observation unit that observes distortion in the output of a power amplifier, and a controller are provided, where the controller includes a third order out-of-band distortion compensation coefficient control unit that adjusts coefficients corresponding to an outside of an input signal band among frequency characteristic compensator coefficients on the basis of distortion observed by the distortion observation unit and a third order in-band distortion coefficient control unit that adjusts coefficients corresponding to an inside of the input signal band among frequency characteristic compensator coefficients on the basis of the observed PAPR.

摘要翻译： PAPR观测单元，其测量输入信号的分布式输出中的PAPR和在线性传输路径和三阶失真产生路径的组合输出中的PAPR，观察功率放大器的输出中的失真的失真观测单元，以及 提供一种控制器，其中控制器包括三阶带外失真补偿系数控制单元，其基于由失真观测单元观测到的失真来调整频率特性补偿器系数中与输入信号频带外部相对应的系数 以及第三级带内失真系数控制单元，其基于观察到的PAPR来调整与频率特性补偿器系数中的输入信号频带的内部对应的系数。

公开(公告)号：US20110210789A1

公开(公告)日：2011-09-01

申请号：US13033279

申请日：2011-02-23

申请人： Junya OHKAWARA ,  Yasunori Suzuki ,  Shoichi Narahashi

发明人： Junya OHKAWARA ,  Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H03F1/32

CPC分类号： H03F1/3282 ,  H03F1/3247 ,  H03F1/3258

摘要： Coefficients W0, W1 and W2 to be used in finding a new quadratic function f2(W) indicating dependence of a distortion component on an coefficient by the least square method are obtained as values that satisfy a relational expression f1(W0)=f1(W2)=f1(W1)+P (where P is a true value) on the basis of a quadratic function f1(W) indicating unupdated distortion component coefficient dependence.

摘要翻译： 作为满足关系式f1（W0）= f1（W2）的值，求出用于求出表示失真分量对系数的最小二乘法的相关性的新的二次函数f2（W）的系数W0，W1，W2 ）= f1（W1）+ P（其中P是真值），其基于表示未更新的失真分量系数依赖性的二次函数f1（W）。

公开(公告)号：US07948311B2

公开(公告)日：2011-05-24

申请号：US12555420

申请日：2009-09-08

申请人： Yasunori Suzuki ,  Shoichi Narahashi ,  Junya Ohkawara

发明人： Yasunori Suzuki ,  Shoichi Narahashi ,  Junya Ohkawara

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3258

摘要： A power series predistorter of the present invention includes a delay path for delaying a signal, a distortion generation path having an N-th order distortion generator and a vector adjuster, a divider for dividing an input signal between the delay path and the distortion generation path, a combiner for combining the output signal of the delay path and the output signal of the distortion generation path, and a controller for controlling the vector adjuster. The controller includes a setting unit, a distortion component measurement unit, a minimum condition calculation unit, and a recording unit. The setting unit specifies the phase or amplitude value of the vector adjuster. The distortion component measurement unit measures the distortion component of a power amplifier. The minimum condition calculation unit obtains a phase or amplitude value that minimizes the distortion component by function approximation, using the magnitude of the distortion components corresponding to three or more phase or amplitude values specified for sampling by the setting unit.

摘要翻译： 本发明的功率系列预失真器包括用于延迟信号的延迟路径，具有N阶失真发生器和向量调整器的失真产生路径，用于对延迟路径和失真产生路径之间的输入信号进行分频的分频器 ，用于组合延迟路径的输出信号和失真产生路径的输出信号的组合器，以及用于控制矢量调节器的控制器。 控制器包括设置单元，失真分量测量单元，最小条件计算单元和记录单元。 设定单位指定矢量调节器的相位或幅度值。 失真分量测量单元测量功率放大器的失真分量。 最小条件计算单元使用通过设置单元进行采样指定的三个或更多个相位或幅度值的对应于失真分量的幅度，通过函数近似获得使失真分量最小化的相位或幅度值。

公开(公告)号：US20110050339A1

公开(公告)日：2011-03-03

申请号：US12868063

申请日：2010-08-25

申请人： Junya OHKAWARA ,  Yasunori Suzuki ,  Shoichi Narahashi

发明人： Junya OHKAWARA ,  Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3294

摘要： A power series digital predistorter and a distortion compensation control method for the power series digital predistorter are capable of adjusting the coefficients of a frequency characteristic compensator at high speed. A controller in the power series digital predistorter collectively sets adjustment amounts for the phases in bands in an N-th order frequency characteristic compensator; collectively sets adjustment amounts for the amplitudes in the bands in the N-th order frequency characteristic compensator; determines whether an index indicating the degree of cancellation of a distortion component generated in a power amplifier satisfies a preset condition; and, if the index does not satisfy the condition, performs control such that the adjustment amounts for the phases and the adjustment amounts for the amplitudes are set again.

摘要翻译： 功率系列数字预失真器和功率级数字预失真器的失真补偿控制方法能够高速调整频率特性补偿器的系数。 功率系列数字预失真器中的控制器共同设定N阶频率特性补偿器中的频带中的相位的调整量; 共同设定N阶频率特性补偿器中的频带中的振幅的调整量; 确定指示在功率放大器中产生的失真分量的消除程度的指标是否满足预设条件; 并且如果索引不满足条件，则进行控制，使得相位的调整量和振幅的调整量再次被设定。

公开(公告)号：US20100295612A1

公开(公告)日：2010-11-25

申请号：US12782168

申请日：2010-05-18

申请人： Junya OHKAWARA ,  Yasunori Suzuki ,  Shoichi Narahashi

发明人： Junya OHKAWARA ,  Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3258

摘要： A power series digital predistorter includes a combiner which combines an output from a linear transmission path with an output from an odd-order distortion generating path, an analog-to-digital converter which converts a feedback signal from an output of a power amplifier to a digital feedback signal, an odd-order distortion vector control part which controls vector adjustment performed by an odd-order distortion vector adjusting part in the odd-order distortion generating path, a cancellation signal generating part which generates a cancellation signal from an input transmission signal, a combiner which is inserted in a feedback signal path and which combines the cancellation signal with a signal from the feedback signal path, and a cancellation signal control part which controls the cancellation signal generating part so that the cancellation signal suppresses a main signal component in the feedback signal at the combiner.

摘要翻译： 功率系列数字预失真器包括组合器，其将来自线性传输路径的输出与来自奇数阶失真产生路径的输出组合，模数转换器，其将来自功率放大器的输出的反馈信号转换为 数字反馈信号，奇数失真矢量控制部，其控制由奇数失真生成路径中的奇数阶失真矢量调整部执行的矢量调整;消除信号生成部，其从输入的发送信号生成消除信号 ，组合器，其插入在反馈信号路径中并将抵消信号与来自反馈信号路径的信号组合;以及消除信号控制部分，其控制消除信号产生部分，使得抵消信号抑制主信号分量 组合器的反馈信号。

公开(公告)号：US20100060356A1

公开(公告)日：2010-03-11

申请号：US12555420

申请日：2009-09-08

申请人： Yasunori SUZUKI ,  Shoichi Narahashi ,  Jyunya Ohkawara

发明人： Yasunori SUZUKI ,  Shoichi Narahashi ,  Jyunya Ohkawara

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3258

摘要： A power series predistorter of the present invention includes a delay path for delaying a signal, a distortion generation path having an N-th order distortion generator and a vector adjuster, a divider for dividing an input signal between the delay path and the distortion generation path, a combiner for combining the output signal of the delay path and the output signal of the distortion generation path, and a controller for controlling the vector adjuster. The controller includes a setting unit, a distortion component measurement unit, a minimum condition calculation unit, and a recording unit. The setting unit specifies the phase or amplitude value of the vector adjuster. The distortion component measurement unit measures the distortion component of a power amplifier. The minimum condition calculation unit obtains a phase or amplitude value that minimizes the distortion component by function approximation, using the magnitude of the distortion components corresponding to three or more phase or amplitude values specified for sampling by the setting unit.

摘要翻译： 本发明的功率系列预失真器包括用于延迟信号的延迟路径，具有N阶失真发生器和向量调整器的失真产生路径，用于对延迟路径和失真产生路径之间的输入信号进行分频的分频器 ，用于组合延迟路径的输出信号和失真产生路径的输出信号的组合器，以及用于控制矢量调节器的控制器。 控制器包括设置单元，失真分量测量单元，最小条件计算单元和记录单元。 设定单位指定矢量调节器的相位或幅度值。 失真分量测量单元测量功率放大器的失真分量。 最小条件计算单元使用通过设置单元进行采样指定的三个或更多个相位或幅度值的对应于失真分量的幅度，通过函数近似获得使失真分量最小化的相位或幅度值。

公开(公告)号：US07634238B2

公开(公告)日：2009-12-15

申请号：US11444494

申请日：2006-06-01

申请人： Yasunori Suzuki ,  Shoichi Narahashi

发明人： Yasunori Suzuki ,  Shoichi Narahashi

IPC分类号： H04B1/04

CPC分类号： H03F1/3252 ,  H03F1/3247 ,  H03F2200/111

摘要： A lookup table type predistorter for reading out distortion compensation data by using a difference signal between a power amplifier input signal and an output signal as a reference signal; wherein N input side variable band signal extractors extract transmitting signals in N frequency bands from the input signal, N output side variable band signal extractors extract signals in N frequency bands from the output of power amplifier, and N difference detectors detect differences between N frequency band signals respectively detected at the input side and the output side as N reference signals, which are used to read out N compensation data from N lookup tables, the N compensation data are added to the transmitting signals in N frequency bands, and N results of addition are combined to produce an output of the predistorter.

摘要翻译： 一种查找表型预失真器，用于通过使用功率放大器输入信号和输出信号之间的差分信号作为参考信号来读出失真补偿数据; 其中N个输入侧可变频带信号提取器从输入信号中提取N个频带中的发送信号，N个输出侧可变频带信号提取器从功率放大器的输出端提取N个频带中的信号，并且N个差分检测器检测N个频带 分别在输入侧和输出侧检测到的信号作为用于从N个查找表读出N个补偿数据的N个参考信号，将N个补偿数据相加到N个频带中的发送信号，并将N个加法结果 被组合以产生预失真器的输出。