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21. 发明授权

US08493144B2 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：US08493144B2
公开(公告)日：2013-07-23
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。

22. 发明授权

US08442157B2 Wireless apparatus and signal processing method 有权
标题翻译：无线设备和信号处理方法
公开(公告)号：US08442157B2
公开(公告)日：2013-05-14
申请号：US12794124
申请日：2010-06-04
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
IPC分类号： H04B1/38
CPC分类号： H04L27/2337
摘要： A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulation to an output signal of the A/D converter and outputs an in-phase signal and a quadrature signal; and an error detection unit which, based on the in-phase and quadrature signals output from the digital quadrature demodulation unit, detects a time difference error between the sample timing of the in-phase signal component and the sample timing of the quadrature signal component.
摘要翻译：无线装置包括：A / D转换器，其交替地从模拟形式的正交调制信号中采样同相信号分量和正交信号分量; 数字正交解调单元，对A / D转换器的输出信号进行数字正交解调，并输出同相信号和正交信号; 以及误差检测单元，其基于从数字正交解调单元输出的同相和正交信号，检测同相信号分量的采样定时与正交信号分量的采样定时之间的时差误差。

23. 发明授权

US08254857B2 Radio communication device and radio communication method 失效
标题翻译：无线电通信设备和无线电通信方法
公开(公告)号：US08254857B2
公开(公告)日：2012-08-28
申请号：US12874453
申请日：2010-09-02
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： H01Q11/12
CPC分类号： H03F1/0222 , H03F1/32 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/504
摘要： A radio communication device includes a power amplifier to amplify a transmit signal, a control unit to generate a voltage control signal for defining power to be supplied to the power amplifier in accordance with a conversion curve expressed using a polynomial series based on an envelope signal obtained from the transmit signal and determine the polynomial series based on an efficiency of the power amplifier, and a power source unit to supply the power to the power amplifier based on the voltage control signal, wherein the control unit divides an amplitude range of the envelope signal on the conversion curve into a plurality of sections and determines the polynomial series based on at least one of the plurality of sections.
摘要翻译：一种无线电通信装置，包括放大发射信号的功率放大器，控制单元，根据获得的包络信号，根据使用多项式序列表示的转换曲线，产生用于定义要提供给功率放大器的功率的电压控制信号根据所述发送信号，根据所述功率放大器的效率确定所述多项式系列;以及电源单元，其基于所述电压控制信号向所述功率放大器供电，其中，所述控制单元将所述包络信号的幅度范围将所述转换曲线转换成多个部分，并且基于所述多个部分中的至少一个来确定所述多项式序列。

24. 发明申请

US20110053532A1 RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD 失效
标题翻译：无线电通信设备和无线电通信方法
公开(公告)号：US20110053532A1
公开(公告)日：2011-03-03
申请号：US12874453
申请日：2010-09-02
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： H04W88/02
CPC分类号： H03F1/0222 , H03F1/32 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/504
摘要： A radio communication device includes a power amplifier to amplify a transmit signal, a control unit to generate a voltage control signal for defining power to be supplied to the power amplifier in accordance with a conversion curve expressed using a polynomial series based on an envelope signal obtained from the transmit signal and determine the polynomial series based on an efficiency of the power amplifier, and a power source unit to supply the power to the power amplifier based on the voltage control signal, wherein the control unit divides an amplitude range of the envelope signal on the conversion curve into a plurality of sections and determines the polynomial series based on at least one of the plurality of sections.
摘要翻译：一种无线电通信装置，包括放大发射信号的功率放大器，控制单元，根据获得的包络信号，根据使用多项式序列表示的转换曲线，产生用于定义要提供给功率放大器的功率的电压控制信号根据所述发送信号，根据所述功率放大器的效率确定所述多项式系列;以及电源单元，其基于所述电压控制信号向所述功率放大器供电，其中，所述控制单元将所述包络信号的幅度范围将所述转换曲线转换成多个部分，并且基于所述多个部分中的至少一个来确定所述多项式序列。

25. 发明申请

US20110053531A1 TRANSMISSION DEVICE AND TRANSMISSION METHOD 有权
标题翻译：传输设备和传输方法
公开(公告)号：US20110053531A1
公开(公告)日：2011-03-03
申请号：US12850998
申请日：2010-08-05
申请人： Yuichi Utsunomiya , Nobukazu Fudaba , Hiroyoshi Ishikawa , Hajime Hamada , Kazuo Nagatani
发明人： Yuichi Utsunomiya , Nobukazu Fudaba , Hiroyoshi Ishikawa , Hajime Hamada , Kazuo Nagatani
IPC分类号： H04W88/02
CPC分类号： H03G3/3036 , H04B2001/0416
摘要： A disclosed transmission device includes a voltage control signal generating unit configured to generate a first voltage control signal from a transmission signal, an amplifier configured to amplify the transmission signal in response to the first voltage control signal, a first timing adjusting unit configured to adjust a control timing for the first voltage control signal, and a control timing setting unit configured to set the control timing adjusted by the first timing adjusting unit based on the output signal from the amplifier and the transmission signal.
摘要翻译：所公开的发送装置包括：电压控制信号生成部，被配置为从发送信号生成第一电压控制信号，被配置为响应于第一电压控制信号放大发送信号的放大器;第一定时调整部，第一电压控制信号的控制定时，以及控制定时设定单元，被配置为基于来自放大器的输出信号和发送信号来设定由第一定时调整单元调整的控制定时。

26. 发明授权

US07860185B2 Distortion compensating apparatus and power amplifier apparatus 有权
标题翻译：失真补偿装置和功率放大装置
公开(公告)号：US07860185B2
公开(公告)日：2010-12-28
申请号：US12333576
申请日：2008-12-12
申请人： Yuichi Utsunomiya , Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Kazuo Nagatani
发明人： Yuichi Utsunomiya , Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Kazuo Nagatani
IPC分类号： H04L25/49 , H03K5/159 , H03C3/08
CPC分类号： H03F1/3247 , H03F1/3241 , H03F2200/165 , H03F2200/451 , H03F2201/3233
摘要： A distortion compensating apparatus has an adaptive distortion compensating unit to compensate nonlinear distortion by controlling an input signal of a nonlinear distortion circuit by using an adaptive algorithm so as to reduce an error between a reference signal and a feedback signal from the nonlinear distortion circuit; and an adaptive equalizer connected between the adaptive distortion compensating unit and the nonlinear distortion circuit or provided in front of the adaptive distortion compensating unit. The adaptive equalizer includes a digital filter to form an amplitude characteristic and a phase characteristic of the input signal on the basis of a filter coefficient group that is set to the digital filter; a memory to hold in advance the filter coefficient group; and a control unit to control reading of the filter coefficient group from the memory on the basis of the input signal and the feedback signal.
摘要翻译：失真补偿装置具有自适应失真补偿单元，用于通过使用自适应算法来控制非线性失真电路的输入信号来补偿非线性失真，以便减少来自非线性失真电路的参考信号和反馈信号之间的误差; 以及连接在自适应失真补偿单元和非线性失真电路之间或设置在自适应失真补偿单元前面的自适应均衡器。自适应均衡器包括数字滤波器，用于基于设置到数字滤波器的滤波器系数组来形成输入信号的幅度特性和相位特性; 提前保存滤波器系数组的存储器; 以及控制单元，其基于输入信号和反馈信号来控制从存储器读取滤波器系数组。

27. 发明申请

US20100148828A1 PEAK POWER REDUCTION METHOD 有权
标题翻译：峰值功率降低方法
公开(公告)号：US20100148828A1
公开(公告)日：2010-06-17
申请号：US12577019
申请日：2009-10-09
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： H03B28/00 , G06G7/16
CPC分类号： H04L27/2614 , H04B2201/70706 , H04L27/0008 , H04L27/2623
摘要： A technique wherein when signals, the modulation schemes of which are different, are to be combined, performing the peak suppression using amounts of the respective modulation schemes can effectively reduce the PAPR of a resulting combined signal. A peak suppressing method for use in a peak suppressing circuit, which combines input signals of different modulation schemes in a time domain to provide a combined signal, comprises detecting, as a peak, that portion of the combined signal which excesses a threshold value to generate a peak signal in accordance with the peak; converting the peak signal into a frequency domain signal and then dividing it into signals originating from the input signals to use these input-signal-originated signals as respective suppression signals; and adding, to the input signals, the suppression signals having different suppression amounts for the respective modulation schemes, thereby performing the peak suppression.
摘要翻译：一种技术，其中当要组合其调制方案不同的信号时，使用各个调制方案的量执行峰值抑制可以有效地减少所得到的组合信号的PAPR。在峰值抑制电路中使用的峰值抑制方法，其组合在时域中的不同调制方案的输入信号以提供组合信号，包括检测超过阈值以产生的组合信号的那部分作为峰值根据峰值的峰值信号; 将峰值信号转换为频域信号，然后将其分为来自输入信号的信号，以将这些输入信号发起的信号用作相应的抑制信号; 并且向输入信号添加对于各个调制方案具有不同抑制量的抑制信号，由此执行峰值抑制。

28. 发明授权

US08270530B2 Apparatus and method of compensating distortion 有权
标题翻译：补偿失真的装置和方法
公开(公告)号：US08270530B2
公开(公告)日：2012-09-18
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： H04L25/03
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。

29. 发明申请

US20120098596A1 POWER AMPLIFIER APPARATUS, DISTORTION COMPENSATION COEFFICIENT UPDATING METHOD, AND TRANSMISSION APPARATUS 有权
标题翻译：功率放大器装置，失真补偿系统更新方法和传输装置
公开(公告)号：US20120098596A1
公开(公告)日：2012-04-26
申请号：US13277409
申请日：2011-10-20
申请人： Kazuo NAGATANI , Yuichi Utsunomiya , Nobukazu Fudaba , Hiroyoshi Ishikawa , Hajime Hamada
发明人： Kazuo NAGATANI , Yuichi Utsunomiya , Nobukazu Fudaba , Hiroyoshi Ishikawa , Hajime Hamada
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F3/24 , H03F2201/3233
摘要： A power amplifier apparatus that includes a processor that performs a first distortion compensation processing on an input signal using a distortion compensation coefficient to obtain a first signal and an amplifier that amplifies the first signal. The processor performs a second distortion compensation processing the amplified signal using the distortion compensation coefficient to obtain a second signal and updates the distortion compensation coefficient to enable convergence between the first signal and the second signal.
摘要翻译：一种功率放大器装置，包括处理器，其使用失真补偿系数对输入信号执行第一失真补偿处理以获得第一信号，以及放大器，其放大第一信号。处理器使用失真补偿系数执行第二失真补偿处理放大信号以获得第二信号，并且更新失真补偿系数，以使能第一信号和第二信号之间的收敛。

30. 发明授权

US08154341B2 Power amplifying apparatus 有权
标题翻译：功率放大装置
公开(公告)号：US08154341B2
公开(公告)日：2012-04-10
申请号：US12335572
申请日：2008-12-16
申请人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Yuichi Utsunomiya , Kazuo Nagatani , Toru Maniwa
发明人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Yuichi Utsunomiya , Kazuo Nagatani , Toru Maniwa
IPC分类号： H03G3/20
CPC分类号： H03F1/0227
摘要： A power amplifying apparatus includes a high-speed low pass filter which inputs an envelope signal included in a transmission signal therein, a low-speed low pass filter which inputs the envelope signal therein, a determination unit which inputs the envelope signal therein and determines rising or falling of the envelope signal, a selecting unit which selects one of the high-speed low pass filter and the low-speed low pass filter according to a determined result of the determination unit, and a voltage supply unit which generates a voltage based on a signal input according to a selection by the selecting unit and supplies the voltage to a power amplifier which inputs the transmission signal therein so as to amplify a power of the transmission signal.
摘要翻译：功率放大装置包括：高速低通滤波器，其输入包括在其中的发送信号中的包络信号;低速低通滤波器，其中输入包络信号;确定单元，其中输入包络信号并确定上升或包围信号的下降;选择单元，其根据确定单元的确定结果选择高速低通滤波器和低速低通滤波器之一;以及电压供应单元，其基于根据选择单元的选择输入信号，并将电压提供给输入其中的发送信号的功率放大器，以放大发送信号的功率。

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