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公开(公告)号：US08532223B2
公开(公告)日：2013-09-10
申请号：US12720269
申请日：2010-03-09
申请人： Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Kazuo Nagatani , Hiroyoshi Ishikawa
CPC分类号： H03F1/0222 , H03F1/3247
摘要： A power amplifying device includes an amplifier that amplifies a signal which is input in accordance with a voltage signal which is supplied to the amplifier, a voltage control section that controls the voltage signal in accordance with a transmission signal, a distortion compensating section that executes a distortion compensating process on the transmission signal by giving a value indicative of a reverse characteristic of the amplifier to the transmission signal in advance and inputs an output signal obtained by executing the distortion compensating process into the amplifier, an amplitude detecting section that detects an amplitude of the transmission signal, and a timing adjusting section that adjusts timings of the output signal and the voltage signal so that a value relating to the distortion compensating process meets a given condition when a detected value of the amplitude of the transmission signal is less than a given value.
摘要翻译： 功率放大装置包括：放大器，放大根据提供给放大器的电压信号而输入的信号;电压控制部，其根据发送信号控制电压信号;失真补偿部，其执行 对发送信号进行失真补偿处理，通过将表示放大器的反向特性的值预先提供给发送信号，并将通过执行失真补偿处理而获得的输出信号输入到放大器中，振幅检测部， 传输信号和定时调整部分，其调节输出信号和电压信号的定时，使得当发送信号的振幅的检测值小于给定值时，与失真补偿处理相关的值满足给定条件 值。
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32.发明授权公开(公告)号：US08451055B2
公开(公告)日：2013-05-28
申请号：US13011295
申请日：2011-01-21
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： An apparatus includes: a unit that stores the look-up table including distortion compensation coefficients; a unit that selects addresses according to an input signal, acquires coefficients stored at the selected addresses, and performs the predistortion of the input signal by using the acquired coefficients; a unit that calculates an error signal by comparing with the input signal a feedback signal that indicates an output of a power amplifier to which a result of the predistortion is inputted; a unit that calculates coefficients from the error signal and the acquired coefficients by using the adaptive algorithm; a unit that, for each of the selected addresses, selects coefficients as adequate coefficients from among the calculated coefficients according to the error signal; and a unit that, for each of the selected addresses, calculates an average value of the adequate coefficients and replaces a stored coefficient in the look-up table with the average value.
摘要翻译： 一种装置，包括：存储包括失真补偿系数的查找表的单元; 根据输入信号选择地址的单元，获取存储在所选择的地址的系数，并通过使用获取的系数来执行输入信号的预失真; 通过与输入信号进行比较来计算误差信号的单元，反馈信号指示输入预失真结果的功率放大器的输出; 通过使用自适应算法从误差信号和采集的系数计算系数的单元; 对于每个所选择的地址，根据误差信号从所计算的系数中选择系数作为适当系数的单元; 以及对于每个所选择的地址，计算所述适当系数的平均值并且用所述平均值替换所述查找表中存储的系数的单元。
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公开(公告)号：US20120288030A1
公开(公告)日：2012-11-15
申请号：US13461928
申请日：2012-05-02
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。
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34.发明授权Peak suppressing and restoring method, transmitter, receiver, and peak suppressing and restoring system 有权峰值抑制和恢复方法，发射机，接收机和峰值抑制和恢复系统公开(公告)号：US08009756B2
公开(公告)日：2011-08-30
申请号：US12478932
申请日：2009-06-05
CPC分类号： H04L27/2624
摘要： A peak suppressing and restoring method includes suppressing a peak of a signal, starting suppression when a suppression start value is lower than a suppression target value, using a function of a gain characteristic such that a peak amplitude value attains the suppression target value, and restoring the suppressed peak of the signal using an inverse function of the function of the gain characteristic.
摘要翻译： 峰值抑制和恢复方法包括：使用增益特性使得峰值振幅值达到抑制目标值的功能来抑制信号的峰值，抑制开始值低于抑制目标值时的开始抑制，并恢复 信号的抑制峰值使用增益特性的函数的反函数。
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公开(公告)号：US07991073B2
公开(公告)日：2011-08-02
申请号：US12639510
申请日：2009-12-16
CPC分类号： H03F3/24 , H03F1/3247 , H03F1/3258 , H03F2200/105 , H03F2200/207 , H03F2201/3227 , H03F2201/3233 , H04L27/368
摘要： A distortion compensation apparatus includes a distortion compensation unit that performs distortion compensation processing on a transmission signal by a series operation, a coefficient update unit that updates a group of series operation coefficients used for the series operation based on a feedback signal of transmission signal output that is output after power amplification processing is performed on output of the distortion compensation unit and the transmission signal, an initial coefficient memory that stores the groups of series operation coefficients that become initial values for coefficient update processing by the coefficient update unit, and a power fluctuation detection unit that detects a power fluctuation of the transmission signal and, when the power fluctuation is detected, reads the groups of series operation coefficients from the initial coefficient memory and provides the groups of series operation coefficients to the coefficient update unit.
摘要翻译： 失真补偿装置包括：通过串联运算对发送信号进行失真补偿处理的失真补偿部，基于发送信号输出的反馈信号更新用于串联运算的一组串联运算系数的系数更新部， 在对失真补偿单元和发送信号的输出执行功率放大处理之后输出;存储由系数更新单元存储成为系数更新处理的初始值的串联运算系数组的初始系数存储器，以及功率波动 检测单元，其检测发送信号的功率波动，并且当检测到功率波动时，从初始系数存储器读取串联操作系数组，并将系列操作系数组提供给系数更新单元。
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36.发明授权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：US07881404B2
公开(公告)日：2011-02-01
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
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。
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公开(公告)号：US07856069B2
公开(公告)日：2010-12-21
申请号：US12078133
申请日：2008-03-27
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2201/3233
摘要： A distortion compensation apparatus includes an amplifier for amplifying an input signal, a calculation unit for obtaining a distortion compensation coefficient of the amplifier corresponding to an amplitude level of the input signal, based on the input signal input to the amplifier and an output signal output from the amplifier, a memory for storing the distortion compensation coefficient, obtained by the calculation unit, into a write address being made to correspond to the input signal amplitude level, a distortion compensation processing unit for reading out the distortion compensation coefficient from the readout address of the memory, and for performing distortion compensation processing of the input signal using the distortion compensation coefficient, and an address generator for generating the write address and the readout address, based on the input signal amplitude level.
摘要翻译： 失真补偿装置包括：放大器，用于放大输入信号;计算单元，用于基于输入到放大器的输入信号和从输入信号输出的输出信号获得对应于输入信号的幅度电平的放大器的失真补偿系数; 所述放大器，用于将由所述计算单元获得的所述失真补偿系数的存储器存储为与所述输入信号幅度电平相对应的写入地址;失真补偿处理单元，用于从所述输出信号幅度电平的读出地址读出所述失真补偿系数; 存储器，以及使用失真补偿系数执行输入信号的失真补偿处理，以及用于基于输入信号幅度电平产生写入地址和读出地址的地址发生器。
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公开(公告)号：US07782153B2
公开(公告)日：2010-08-24
申请号：US11429355
申请日：2006-05-05
IPC分类号： H03L1/00
CPC分类号： H03C5/00
摘要： A timing adjusting method detects a phase error between a main signal path from which a transmitting signal is obtained and a control signal path from which a voltage control signal is obtained, based on a to-be-amplified signal that is to be amplified and represents an amplitude or a power of the transmitting signal prior to amplification and a feedback signal that represents an amplitude or a power of the transmitting signal after the amplification, adjusts an amount of delay of at least one of the main signal path and the control signal path so as to mutually cancel the phase error, and amplifies the transmitting signal from the main signal path depending on the voltage control signal from the control signal path. The detecting the phase error may include detecting polarity transition points of a slope of a waveform of the to-be-amplified signal or the feedback signal, and measuring the phase error using the detected polarity transition points.
摘要翻译： 代表定时调整方法，根据要放大的被放大信号，检测获得发送信号的主信号路径与获得电压控制信号的控制信号路径之间的相位误差， 在放大之前的发送信号的幅度或功率以及表示放大后的发送信号的幅度或功率的反馈信号，调整主信号路径和控制信号路径中的至少一个的延迟量 以便相互抵消相位误差，并且根据来自控制信号路径的电压控制信号放大来自主信号路径的发送信号。 检测相位误差可以包括检测被放大信号或反馈信号的波形的斜率的极性转变点，以及使用检测到的极性转变点来测量相位误差。
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39.发明授权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：US07746957B2
公开(公告)日：2010-06-29
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
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。
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公开(公告)号：US20080204136A1
公开(公告)日：2008-08-28
申请号：US12078133
申请日：2008-03-27
IPC分类号： H03F1/32
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2201/3233
摘要： A distortion compensation apparatus includes an amplifier for amplifying an input signal, a calculation unit for obtaining a distortion compensation coefficient of the amplifier corresponding to an amplitude level of the input signal, based on the input signal input to the amplifier and an output signal output from the amplifier, a memory for storing the distortion compensation coefficient, obtained by the calculation unit, into a write address being made to correspond to the input signal amplitude level, a distortion compensation processing unit for reading out the distortion compensation coefficient from the readout address of the memory, and for performing distortion compensation processing of the input signal using the distortion compensation coefficient, and an address generator for generating the write address and the readout address, based on the input signal amplitude level.
摘要翻译： 失真补偿装置包括：放大器，用于放大输入信号;计算单元，用于基于输入到放大器的输入信号和从输入信号输出的输出信号获得对应于输入信号的幅度电平的放大器的失真补偿系数; 所述放大器，用于将由所述计算单元获得的所述失真补偿系数的存储器存储为与所述输入信号幅度电平相对应的写入地址;失真补偿处理单元，用于从所述输出信号幅度电平的读出地址读出所述失真补偿系数; 存储器，以及使用失真补偿系数执行输入信号的失真补偿处理，以及用于基于输入信号幅度电平产生写入地址和读出地址的地址发生器。
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