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1. 发明申请

US20100194474A1 Predistorter and Distortion Compensation Method 有权
标题翻译：预失真和失真补偿方法
公开(公告)号：US20100194474A1
公开(公告)日：2010-08-05
申请号：US12693695
申请日：2010-01-26
申请人： Hiroyoshi ISHIKAWA , Hajime HAMADA , Nobukazu FUDABA , Yuichi UTSUNOMIYA , Shohei ISHIKAWA , Kazuo NAGATANI
发明人： Hiroyoshi ISHIKAWA , Hajime HAMADA , Nobukazu FUDABA , Yuichi UTSUNOMIYA , Shohei ISHIKAWA , Kazuo NAGATANI
IPC分类号： H03F1/26
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。

2. 发明申请

US20100237937A1 POWER AMPLIFYING DEVICE AND POWER AMPLIFYING METHOD 有权
标题翻译：功率放大器件和功率放大方法
公开(公告)号：US20100237937A1
公开(公告)日：2010-09-23
申请号：US12720269
申请日：2010-03-09
申请人： Kazuo NAGATANI , Hiroyoshi ISHIKAWA , Nobukazu FUDABA , Shohei ISHIKAWA , Hajime HAMADA , Yuichi UTSUNOMIYA
发明人： Kazuo NAGATANI , Hiroyoshi ISHIKAWA , Nobukazu FUDABA , Shohei ISHIKAWA , Hajime HAMADA , Yuichi UTSUNOMIYA
IPC分类号： H03F1/26
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。

3. 发明申请

US20100219889A1 DISTORTION COMPENSATION APPARATUS AND METHOD 有权
标题翻译：失真补偿装置和方法
公开(公告)号：US20100219889A1
公开(公告)日：2010-09-02
申请号：US12701923
申请日：2010-02-08
申请人： Kazuo NAGATANI , Yuichi UTSUNOMIYA , Hajime HAMADA , Hiroyoshi ISHIKAWA , Nobukazu FUDABA , Shohei ISHIKAWA
发明人： Kazuo NAGATANI , Yuichi UTSUNOMIYA , Hajime HAMADA , Hiroyoshi ISHIKAWA , Nobukazu FUDABA , Shohei ISHIKAWA
IPC分类号： H03F1/26
CPC分类号： H04L27/366 , H03F1/3258 , H03F3/195 , H03F3/24 , H03F2201/3233
摘要： A distortion compensation apparatus includes a distortion compensation signal generation unit that performs, on a transmission signal, distortion compensation processing using a series operation; a coefficient updating unit that updates series operation coefficients used for the series operation based on a feedback signal of a power amplification output which is output through power amplification processing of a distortion compensation signal output from the distortion compensation signal generation unit, and based on the distortion compensation signal; a memory that stores the distortion compensation signal corresponding to a transmission signal having a given power value and the feedback signal of the power amplification output as restraint information; and a control unit that performs control so that, in accordance with the power value of the transmission signal, restraint information corresponding to a power value different from the power value of the transmission signal is read and used for updating the series operation coefficients.
摘要翻译：失真补偿装置包括失真补偿信号生成单元，其对传输信号进行使用串联操作的失真补偿处理; 系数更新单元，其基于通过从失真补偿信号生成单元输出的失真补偿信号的功率放大处理输出的功率放大输出的反馈信号，并且基于失真来更新用于串联运算的串联运算系数补偿信号; 存储器，其存储与具有给定功率值的发送信号对应的失真补偿信号和功率放大输出的反馈信号作为约束信息; 以及控制单元，其执行控制，使得根据所述发送信号的功率值，读取与所述发送信号的功率值不同的功率值对应的约束信息，并且用于更新所述串联操作系数。

4. 发明申请

US20100003920A1 PEAK SUPPRESSING AND RESTORING METHOD, TRANSMITTER, RECEIVER, AND PEAK SUPPRESSING AND RESTORING SYSTEM 有权
标题翻译：峰值抑制和恢复方法，发射器，接收器和峰值抑制和恢复系统
公开(公告)号：US20100003920A1
公开(公告)日：2010-01-07
申请号：US12478932
申请日：2009-06-05
申请人： Hiroyoshi ISHIKAWA , Hajime HAMADA , Nobukazu FUDABA , Yuichi UTSUNOMIYA , Kazuo NAGATANI
发明人： Hiroyoshi ISHIKAWA , Hajime HAMADA , Nobukazu FUDABA , Yuichi UTSUNOMIYA , Kazuo NAGATANI
IPC分类号： H04B15/00 , H04B1/04 , H04B1/10
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。

5. 发明申请

US20110260792A1 DISTORTION COMPENSATION DEVICE, RADIO COMMUNICATION DEVICE, AND DISTORTION COMPENSATION METHOD 有权
标题翻译：失真补偿装置，无线电通信装置和失真补偿方法
公开(公告)号：US20110260792A1
公开(公告)日：2011-10-27
申请号：US13088580
申请日：2011-04-18
申请人： Hiroyoshi ISHIKAWA , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Kazuo Nagatani , Yasuyuki Oishi
发明人： Hiroyoshi ISHIKAWA , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Kazuo Nagatani , Yasuyuki Oishi
IPC分类号： H03F1/26
CPC分类号： H03F1/3258 , H03F1/3247 , H03F3/189 , H03F3/24 , H03F2200/204 , H03F2200/451 , H03F2201/3233
摘要： A distortion compensation device includes a distortion compensation unit which compensates for a distortion generated in a power amplifier by using a polynomial in which a signal to be input into a power amplifier is raised to a power of a degree N (N is an integer larger than 0) and the raised signal is delayed by a delay number K (K is an integer larger than 0), and a polynomial adjusting unit which adjusts the degree N or the delay number K of the polynomial based on a comparison between a prescribed value, which indicates a degree of variation of the distortion generated in the power amplifier and a threshold value.
摘要翻译：失真补偿装置包括失真补偿单元，其通过使用将要输入到功率放大器的信号提高到N的幂的多项式来补偿在功率放大器中产生的失真（N是大于 0），并且升高的信号被延迟了延迟数K（K是大于0的整数），以及多项式调整单元，其基于规定值，其指示在功率放大器中产生的失真的变化程度和阈值。

6. 发明申请

US20100060355A1 APPARATUS AND METHOD OF COMPENSATING DISTORTION 有权
标题翻译：装置和补偿失效的方法
公开(公告)号：US20100060355A1
公开(公告)日：2010-03-11
申请号：US12555314
申请日：2009-09-08
申请人： Hajime HAMADA , Hiroyoshi ISHIKAWA , Yuichi UTSUNOMIYA , Kazuo NAGATANI , Nobukazu FUDABA , Hideharu SHAKO
发明人： Hajime HAMADA , Hiroyoshi ISHIKAWA , Yuichi UTSUNOMIYA , Kazuo NAGATANI , Nobukazu FUDABA , Hideharu SHAKO
IPC分类号： H03F1/26
CPC分类号： H03F1/3241 , H03F1/3258
摘要： A distortion compensating apparatus includes a processing circuit that calculates each of a plurality of series operation coefficient pairs based on a transmission signal and a feedback signal of an output from an amplifying circuit performing power amplification of the transmission signal, executes a series operation process with respect to the transmission signal based on the plurality of the series operation coefficient pairs as a distortion compensation of the transmission signal, and inputs a result of the series operation process to the amplifying circuit performing the power amplification, and a selecting unit that, on the basis of power of the transmission signal, selects the series operation process to be executed corresponding to one of the plurality of series operation coefficient pairs, or selects one of the plurality of series operation coefficient pairs to be used in the series operation process to be executed.
摘要翻译：失真补偿装置包括：处理电路，其基于发送信号和来自执行发送信号的功率放大的放大电路的输出的反馈信号，计算多个串联运算系数对中的每一个，执行相对于基于多个串联运算系数对的发送信号作为发送信号的失真补偿，并将串联运算处理的结果输入到执行功率放大的放大电路，以及选择单元，基于选择与多个串联运算系数对中的一个对应的要执行的串联运算处理，或者选择要在要执行的串联运算处理中使用的多个串联运算系数对之一。

7. 发明申请

US20090318099A1 Peak Suppressing Apparatus, Peak Suppressing Method, and Wireless Communication Device 有权
标题翻译：峰值抑制装置，峰值抑制方法和无线通信装置
公开(公告)号：US20090318099A1
公开(公告)日：2009-12-24
申请号：US12411553
申请日：2009-03-26
申请人： Kazuo NAGATANI , Hajime HAMADA , Hiroyoshi ISHIKAWA , Nobukazu FUDABA , Yuichi UTSUNOMIYA
发明人： Kazuo NAGATANI , Hajime HAMADA , Hiroyoshi ISHIKAWA , Nobukazu FUDABA , Yuichi UTSUNOMIYA
IPC分类号： H01Q11/12 , H04B1/10
CPC分类号： H04L27/2614 , H04L27/2623
摘要： A peak suppressing apparatus includes an amplitude limiter that limits amplitude of the transmission signal with a predetermined threshold; a peak-suppressing-signal extracting unit that extracts a peak suppressing signal by subtracting the transmission signal before the amplitude limiting from the transmission signal amplitude-limited by the amplitude limiter; a filtering unit that performs filtering so that a frequency characteristic of the peak suppressing signal extracted by the peak-suppressing-signal extracting unit becomes flat; and an adder that adds the peak suppressing signal filtered by the filtering unit to the transmission signal.
摘要翻译：峰值抑制装置包括限幅器，其限制具有预定阈值的发送信号的振幅; 峰值抑制信号提取单元，通过从由幅度限制器限幅的发送信号中减去振幅限制之前的发送信号来提取峰值抑制信号; 滤波单元，进行滤波，使得由峰值抑制信号提取单元提取的峰值抑制信号的频率特性变得平坦; 以及将由滤波单元滤波的峰值抑制信号与发送信号相加的加法器。

8. 发明申请

US20110187454A1 DISTORTION COMPENSATING APPARATUS, TRANSMITTING APPARATUS, AND DISTORTION COMPENSATING METHOD 有权
标题翻译：失败补偿装置，发送装置和失真补偿方法
公开(公告)号：US20110187454A1
公开(公告)日：2011-08-04
申请号：US13011295
申请日：2011-01-21
申请人： Nobukazu FUDABA , Hiroyoshi ISHIKAWA , Hajime HAMADA , Yuichi UTSUNOMIYA , Kazuo NAGATANI
发明人： Nobukazu FUDABA , Hiroyoshi ISHIKAWA , Hajime HAMADA , Yuichi UTSUNOMIYA , Kazuo NAGATANI
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。

9. 发明申请

US20090191923A1 POWER AMPLIFYING APPARATUS WITH BANDWIDTH LIMITATION PROCESSING ON VARIABLE POWER SUPPLY 有权
标题翻译：功率放大器，可变电源带宽限制处理
公开(公告)号：US20090191923A1
公开(公告)日：2009-07-30
申请号：US12328950
申请日：2008-12-05
申请人： Nobukazu FUDABA , Hiroyoshi ISHIKAWA , Hajime HAMADA , Yuichi UTSUNOMIYA , Kazuo NAGATANI
发明人： Nobukazu FUDABA , Hiroyoshi ISHIKAWA , Hajime HAMADA , Yuichi UTSUNOMIYA , Kazuo NAGATANI
IPC分类号： H04M1/00
CPC分类号： H04L27/361 , H03F1/0211 , H03F3/24
摘要： A power amplifying apparatus has a bandwidth limitation process circuit to which an envelope signal included in a transmission signal is inputted, and which performs a bandwidth limitation process on the envelope signal, a variable power supply circuit for generating a power amplifier supply voltage based on a voltage control signal generated by the bandwidth limitation process circuit, and a power amplifier which is fed an input signal, and which is driven in accordance with the supply voltage from the variable power supply circuit.
摘要翻译：功率放大装置具有带宽限制处理电路，输入发送信号中包含的包络信号，对包络信号进行带宽限制处理，可变电源电路基于由带宽限制处理电路产生的电压控制信号，以及馈送输入信号并根据来自可变电源电路的电源电压驱动的功率放大器。

10. 发明申请

US20120224654A1 TRANSMITTER AND DISTORTION COMPENSATING METHOD 有权
标题翻译：发射机和失真补偿方法
公开(公告)号：US20120224654A1
公开(公告)日：2012-09-06
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 , H04B1/02
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。

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