公开(公告)号：US20100164620A1

公开(公告)日：2010-07-01

申请号：US12642003

申请日：2009-12-18

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

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

IPC分类号： H03F1/26

CPC分类号： H03F1/3247

摘要： A predistortion apparatus for compensating for a distortion arising from a non linear property in input to output characteristics of an amplifier, by processing calculation of a plurality of coefficients for a plurality of power series defining the predistortion characteristics for a plurality of power ranges, respectively, the predistortion apparatus includes: a coefficient update unit for setting and updating coefficients of the power series to provide the predistortion characteristics for the plurality of power ranges in accordance with a comparison between the input and output of the amplifier; and a determination unit for determining at least one threshold value defining the plurality of power ranges by shifting the threshold value and operating the coefficient update unit for updating the coefficients for each of the power series corresponding to each of the power ranges defined by the shifted threshold value.

摘要翻译： 一种预失真装置，用于通过分别对多个功率范围的多个功率系列的多个功率系列进行计算，以分别对多个功率范围的预失真特性进行处理，来补偿由输入到放大器的输出特性中的非线性特性引起的失真， 预失真装置包括：系数更新单元，用于根据放大器的输入和输出之间的比较，设置和更新功率系列的系数，以提供多个功率范围的预失真特性; 以及确定单元，用于通过偏移所述阈值来确定定义所述多个功率范围的至少一个阈值，并操作所述系数更新单元，用于更新与由所述移位阈值定义的每个功率范围对应的每个功率序列的系数 值。

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。

公开(公告)号：US20100014609A1

公开(公告)日：2010-01-21

申请号：US12567431

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： H04L25/03

CPC分类号： H03F1/3247 ,  H03F2201/3233

摘要： A distortion correction control apparatus is for compensating for a burst distortion in a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a holding unit that stores a distortion correction coefficient having reverse characteristics to the burst distortion; a unit that multiplies the distortion correction coefficient read out from the holding unit by the input signal or adds the distortion correction coefficient read out from the holding 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, the distortion correction coefficient of the last time, and a signal fed back as an output signal of the transmission amplifier, the distortion correction coefficient by an adaptive algorithm, and that inputs the updated distortion correction coefficient to the holding unit.

摘要翻译： 失真校正控制装置用于补偿由发送目标的输入信号的脉冲串引起的发送放大器中的脉冲串失真。 该装置包括保存单元，其存储具有与突发失真相反特性的失真校正系数; 将从保持单元读出的失真校正系数乘以输入信号的单位，或者在接收到通知输入有无之间切换的突发信息时，将从保持单元读出的失真校正系数与输入信号相加 信号; 以及更新单元，其基于输入信号更新上一次的失真校正系数，以及作为发送放大器的输出信号反馈的信号，通过自适应算法更新失真校正系数，并且输入更新的 失真校正系数到保持单元。

公开(公告)号：US20120288030A1

公开(公告)日：2012-11-15

申请号：US13461928

申请日：2012-05-02

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

IPC分类号： H04L25/49

CPC分类号： H04L25/49 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/336 ,  H03F2201/3212 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L25/03343 ,  H04L27/2614 ,  H04L27/368

摘要： A distortion compensation device which reduces a distortion of an amplifier which is added to an output signal of the amplifier, the distortion compensation device including: a plurality of distortion compensation coefficient storage circuits which stores a plurality of distortion compensation coefficients and outputs the distortion compensation coefficients according to an amplitude of an input signal of the amplifier, a distortion compensating processing circuit which adds the distortion compensation coefficient output from each of the plurality of distortion compensation coefficient storage circuits to the input signal of the amplifier, and a distortion compensation coefficient updating circuit which performs weighting processing on the distortion compensation coefficient output from each of the plurality of distortion compensation coefficient storage circuits to reduce the distortion compensation coefficient and which calculates an update value of the distortion compensation coefficient by using the distortion compensation coefficient which is subjected to the weighting processing.

摘要翻译： 一种失真补偿装置，其减少了放大器的失真，该放大器被加到放大器的输出信号上，失真补偿装置包括：多个失真补偿系数存储电路，存储多个失真补偿系数，并输出失真补偿系数 根据放大器的输入信号的幅度，将从多个失真补偿系数存储电路输出的失真补偿系数与放大器的输入信号相加的失真补偿处理电路和失真补偿系数更新电路 对从多个失真补偿系数存储电路中的每一个输出的失真补偿系数进行加权处理，以减小失真补偿系数，并计算失真补偿系数的更新值 通过使用经受加权处理的失真补偿系数。

公开(公告)号：US20120275545A1

公开(公告)日：2012-11-01

申请号：US13420760

申请日：2012-03-15

申请人： Yuichi Utsunomiya ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani

发明人： Yuichi Utsunomiya ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani

IPC分类号： H04L25/49

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F2201/3233

摘要： A distortion compensation apparatus for performing distortion compensation processing by applying the inverse properties of distortion properties of said power amplifier to a transmission signal to be input to a power amplifier, includes a plurality of distortion compensation coefficient storage units configured to store a plurality of distortion compensation coefficients used for said distortion compensation processing, an offset correction processing unit configured to subject said distortion compensation coefficient stored in each of said plurality of distortion compensation coefficient storage units to offset correction processing, and to generate distortion compensation coefficients in the case that said offset correction processing has not been performed, corresponding to said plurality of distortion compensation coefficient storage units, in a pseudo manner and a distortion compensation processing unit configured to subject said transmission signal to said distortion compensation processing based on said distortion compensation coefficients generated in a pseudo manner.

摘要翻译： 一种用于通过将所述功率放大器的失真特性的逆特性应用于要输入到功率放大器的发送信号来执行失真补偿处理的失真补偿装置，包括：多个失真补偿系数存储单元，被配置为存储多个失真补偿 用于所述失真补偿处理的系数;偏移校正处理单元，被配置为对存储在所述多个失真补偿系数存储单元中的每一个中的所述失真补偿系数进行偏移校正处理，并且在所述偏移校正的情况下产生失真补偿系数 以伪方式对应于所述多个失真补偿系数存储单元的处理没有被执行，以及失真补偿处理单元，被配置为使所述发送信号进行所述失真补偿 基于以伪方式生成的所述失真补偿系数的n处理。

公开(公告)号：US08712345B2

公开(公告)日：2014-04-29

申请号：US13558620

申请日：2012-07-26

申请人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

发明人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

IPC分类号： H04B1/04 ,  H04B17/00

CPC分类号： H03F1/3258 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/189 ,  H03F3/245 ,  H03F2200/105 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B2001/0425

摘要： A distortion compensation device includes: a frequency-characteristic adding unit configured to add a frequency characteristic to an error signal to generate an added error signal, the error signal being a difference between an input signal input to an amplifier and an output signal output from the amplifier; a distortion-compensation-coefficient updating unit configured to update a distortion compensation coefficient for compensating for a distortion characteristic of the amplifier based on the added error signal; and a distortion compensation unit configured to perform distortion compensation on the input signal using the updated distortion compensation coefficient.

摘要翻译： 失真补偿装置包括：频率特性相加单元，被配置为向误差信号添加频率特性以产生相加的误差信号，所述误差信号是输入到放大器的输入信号与从所述输出信号输出的输出信号之间的差 放大器 失真补偿系数更新单元，被配置为基于所添加的误差信号来更新用于补偿所述放大器的失真特性的失真补偿系数; 以及失真补偿单元，被配置为使用更新的失真补偿系数对输入信号执行失真补偿。

公开(公告)号：US08619905B2

公开(公告)日：2013-12-31

申请号：US12693695

申请日：2010-01-26

申请人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Kazuo Nagatani

发明人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Kazuo Nagatani

IPC分类号： H04K1/02

CPC分类号： H03F1/3247 ,  H03F1/3258 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/204 ,  H03F2200/451 ,  H03F2201/3209 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04L27/368

摘要： A predistorter includes a distortion compensating unit which gives, in advance, a reverse characteristic of a characteristic of input to output of a power amplifier to a transmission signal which is to be input to the power amplifier; a distortion compensation signal generating unit which generates a distortion compensation signal indicating the reverse characteristic based on transmission data that is sample data of the transmission signal and the delayed transmission data; and a delay amount control unit which controls a delay amount of the transmission data according to an output signal of the power amplifier.

摘要翻译： 预失真器包括：失真补偿单元，其预先将功率放大器的输出的特性的反向特性赋予要输入到功率放大器的发送信号; 失真补偿信号产生单元，其基于作为发送信号的采样数据和延迟的发送数据的发送数据生成表示反向特性的失真补偿信号; 以及延迟量控制单元，其根据功率放大器的输出信号来控制发送数据的延迟量。

公开(公告)号：US08509349B2

公开(公告)日：2013-08-13

申请号：US13357504

申请日：2012-01-24

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Toshio Kawasaki

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Toshio Kawasaki

IPC分类号： H04B15/00

CPC分类号： H04B1/0475 ,  H03F1/3247

摘要： A transmitter, when the power changes at a certain timing, adjusts the gain for the transmission signal before the application of the distortion compensation process correspondingly to the amplitude of the transmission signal at the certain timing based on the average of the power of a transmission signal before application of the distortion compensation process, obtains a distortion compensation coefficient corresponding to the value of the power of the adjusted transmission signal from the LUT, applies the distortion compensation process to the transmission signal using the obtained distortion compensation coefficient, calculates an update for a distortion compensation coefficient corresponding to the obtained distortion compensation coefficient and stored in the LUT based on an error between the power of the transmission signal amplified by an amplifier and the power of the transmission signal before the application of the distortion compensation process, and updates the LUT using the calculated update.

摘要翻译： 发射机当功率在某一定时变化时，根据传输信号的功率的平均值，在施加失真补偿处理之前调整发送信号的增益，对应于在某个定时的发送信号的幅度 在施加失真补偿处理之前，获得与来自LUT的经调整的发送信号的功率值对应的失真补偿系数，使用所获得的失真补偿系数对发送信号应用失真补偿处理，计算更新 基于由放大器放大的发送信号的功率与施加失真补偿处理之前的发送信号的功率之间的误差，存储在LUT中的失真补偿系数对应于所获得的失真补偿系数，并且更新LUT 使用t 他计算更新。

公开(公告)号：US09100263B2

公开(公告)日：2015-08-04

申请号：US13420760

申请日：2012-03-15

申请人： Yuichi Utsunomiya ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani

发明人： Yuichi Utsunomiya ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani

IPC分类号： H03F1/32 ,  H04L27/36

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F2201/3233

摘要： A distortion compensation apparatus for performing distortion compensation processing by applying the inverse properties of distortion properties of the power amplifier to a transmission signal to be input to a power amplifier, includes a plurality of distortion compensation coefficient storage units configured to store a plurality of distortion compensation coefficients used for the distortion compensation processing, an offset correction processing unit configured to subject the distortion compensation coefficient stored in each of the plurality of distortion compensation coefficient storage units to offset correction processing, and to generate distortion compensation coefficients in the case that the offset correction processing has not been performed, corresponding to plurality of distortion compensation coefficient storage units, in a pseudo manner and a distortion compensation processing unit configured to subject the transmission signal to the distortion compensation processing based on the distortion compensation coefficients generated in a pseudo manner.

摘要翻译： 一种用于通过将功率放大器的失真特性的逆特性应用于要输入到功率放大器的发送信号来执行失真补偿处理的失真补偿装置，包括：多个失真补偿系数存储单元，被配置为存储多个失真补偿 用于失真补偿处理的系数;偏移校正处理单元，被配置为对存储在多个失真补偿系数存储单元中的每一个中的失真补偿系数进行偏移校正处理，并且在偏移校正的情况下产生失真补偿系数 以伪方式对应于多个失真补偿系数存储单元进行处理，以及失真补偿处理单元，被配置为使发送信号进行失真补偿处理 基于以伪方式生成的失真补偿系数。

公开(公告)号：US08787487B2

公开(公告)日：2014-07-22

申请号：US13461928

申请日：2012-05-02

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

IPC分类号： H04L27/10 ,  H04J3/16 ,  G01V3/38 ,  H04L25/49

CPC分类号： H04L25/49 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/336 ,  H03F2201/3212 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L25/03343 ,  H04L27/2614 ,  H04L27/368

摘要： A distortion compensation device which reduces a distortion of an amplifier which is added to an output signal of the amplifier, the distortion compensation device including: a plurality of distortion compensation coefficient storage circuits which stores a plurality of distortion compensation coefficients and outputs the distortion compensation coefficients according to an amplitude of an input signal of the amplifier, a distortion compensating processing circuit which adds the distortion compensation coefficient output from each of the plurality of distortion compensation coefficient storage circuits to the input signal of the amplifier, and a distortion compensation coefficient updating circuit which performs weighting processing on the distortion compensation coefficient output from each of the plurality of distortion compensation coefficient storage circuits to reduce the distortion compensation coefficient and which calculates an update value of the distortion compensation coefficient by using the distortion compensation coefficient which is subjected to the weighting processing.

摘要翻译： 一种失真补偿装置，其减少了放大器的失真，该放大器被加到放大器的输出信号上，失真补偿装置包括：多个失真补偿系数存储电路，存储多个失真补偿系数，并输出失真补偿系数 根据放大器的输入信号的幅度，将从多个失真补偿系数存储电路输出的失真补偿系数与放大器的输入信号相加的失真补偿处理电路和失真补偿系数更新电路 对从多个失真补偿系数存储电路中的每一个输出的失真补偿系数进行加权处理，以减小失真补偿系数，并计算失真补偿系数的更新值 通过使用经受加权处理的失真补偿系数。