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51. 发明授权

US08102941B2 Peak suppression control apparatus 有权
标题翻译：峰值抑制控制装置
公开(公告)号：US08102941B2
公开(公告)日：2012-01-24
申请号：US11822946
申请日：2007-07-11
申请人： Hajime Hamada , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
发明人： Hajime Hamada , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
IPC分类号： H04L25/03 , H04L25/49 , H04K1/02
CPC分类号： H04B1/0475
摘要： A peak suppression threshold value control unit receives an input of quality requirement information, such as a modulation system and coding ratio, from a baseband signal generation unit, determines a threshold value of a peak suppression unit based on the quality requirement information and outputs the threshold value to a peak suppression unit. The peak suppression unit applies a peak suppression control to a baseband signal input from a baseband signal generation unit based on the threshold value and outputs a signal (i.e., a peak suppression signal) applied by the peak suppression process.
摘要翻译：峰值抑制阈值控制单元从基带信号生成单元接收诸如调制系统和编码比的质量要求信息的输入，基于质量要求信息确定峰值抑制单元的阈值，并输出阈值值到峰值抑制单元。峰值抑制单元基于阈值对从基带信号生成单元输入的基带信号进行峰值抑制控制，并输出通过峰值抑制处理施加的信号（即，峰值抑制信号）。

52. 发明授权

US08064529B2 Peak suppressor 有权
标题翻译：峰值抑制器
公开(公告)号：US08064529B2
公开(公告)日：2011-11-22
申请号：US11878588
申请日：2007-07-25
申请人： Hajime Hamada , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
发明人： Hajime Hamada , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/2614 , H03F1/32 , H03F3/19 , H04B1/0475 , H04L27/2623
摘要： In a configuration where systems C and D having different reception quality requirements are present, a peak suppressor generates a replica of a signal from system C combined together with a signal from system D before peak suppression. Based on the replica, system specific peak suppressing units respectively perform peak suppression on signals of each system according to the respective reception quality requirements of each system. A combining unit combines the peak-suppressed signals of each system. Hence, peak suppression on signals from systems requiring different reception qualities is performed at an appropriate degree according to each system.
摘要翻译：在存在具有不同接收质量要求的系统C和D的配置中，峰值抑制器在峰值抑制之前产生与系统D的信号组合的来自系统C的信号的副本。基于复制品，系统特定的峰值抑制单元根据每个系统的各个接收质量要求分别对每个系统的信号进行峰值抑制。组合单元组合每个系统的峰值抑制信号。因此，根据每个系统，在适当的程度上执行需要不同接收质量的系统的信号的峰值抑制。

53. 发明授权

US07839949B2 Peak suppression method, peak suppression apparatus and wireless transmission apparatus 有权
标题翻译：峰值抑制方法，峰值抑制装置和无线传输装置
公开(公告)号：US07839949B2
公开(公告)日：2010-11-23
申请号：US11482618
申请日：2006-07-07
申请人： Hajime Hamada , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
发明人： Hajime Hamada , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
IPC分类号： H04L25/03
CPC分类号： H04L27/2624
摘要： The present invention provides a peak suppression method, including a first step for detecting characteristic information of a peak part of a transmission signal; and a second step for changing a suppression method for the peak part based on the characteristic information.
摘要翻译：本发明提供一种峰值抑制方法，包括：检测发送信号的峰值部分的特征信息的第一步骤; 以及基于特征信息改变峰值部分的抑制方法的第二步骤。

54. 发明申请

US20090190647A1 DISTORTION COMPENSATING APPARATUS AND POWER AMPLIFIER APPARATUS 有权
标题翻译：失真补偿装置和功率放大器装置
公开(公告)号：US20090190647A1
公开(公告)日：2009-07-30
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： H04L27/01
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。

55. 发明申请

US20090160548A1 POWER AMPLIFYING APPARATUS 有权
标题翻译：功率放大器
公开(公告)号：US20090160548A1
公开(公告)日：2009-06-25
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： H03F1/02
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。

56. 发明申请

US20080200133A1 Radio transmission apparatus having peak suppression function 有权
标题翻译：无线传输装置具有峰值抑制功能
公开(公告)号：US20080200133A1
公开(公告)日：2008-08-21
申请号：US12076825
申请日：2008-03-24
申请人： Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Tokuro Kubo
发明人： Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Tokuro Kubo
IPC分类号： H04B1/02
CPC分类号： H04B1/707 , H04B2201/70706 , H04L5/0021 , H04L27/2624
摘要： A radio transmission apparatus executing peak suppression processing to an input signal in at least two stages, includes a first peak detector detecting a first peak, a maximum peak among peaks exceeding a first threshold, for a plurality of envelopes included in a predetermined input signal section; a second peak detector detecting a second peak exceeding a second threshold, on the basis of each input signal envelope; a first peak suppression unit suppressing the predetermined input signal section to the limit of a first level based on the first peak; a modulation signal generation unit generating a modulated signal modulated from the input signal suppressed by the first peak suppression unit; and a second peak suppression unit suppressing the second peak to the limit of a second level by each modulated signal envelope based on the first level and the second peak.
摘要翻译：对至少两级对输入信号执行峰值抑制处理的无线发送装置包括检测包括在预定输入信号部分中的多个信封的第一峰值，检测超过第一阈值的峰值中的最大峰值的第一峰值检测器 ; 基于每个输入信号包络检测第二峰值检测器，检测超过第二阈值的第二峰值; 第一峰值抑制单元，基于第一峰值将预定输入信号部分抑制到第一电平的极限; 调制信号生成单元，生成由所述第一峰值抑制单元抑制的输入信号调制的调制信号; 以及第二峰值抑制单元，其基于第一电平和第二峰值，通过每个调制信号包络将第二峰值抑制到第二电平的极限。

57. 发明授权

US07388926B2 Quadrature modulation system 有权
标题翻译：正交调制系统
公开(公告)号：US07388926B2
公开(公告)日：2008-06-17
申请号：US10945316
申请日：2004-09-20
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Hajime Hamada , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Hajime Hamada , Tokuro Kubo
IPC分类号： H04B15/00 , H04L25/49
CPC分类号： H04L27/0014 , H03C2200/0058 , H03C2200/0079 , H04L27/364 , H04L2027/0016 , H04L2027/0018
摘要： A disclosed quadrature modulation system inputs an inphase signal component and an orthogonal signal component, and outputs an output signal that is quadrature modulated by a quadrature modulator. The quadrature modulation system calculates a first cumulative total based on the inphase signal component input into the quadrature modulator and an inphase signal component of a feedback signal obtained from the output signal. The quadrature modulation system calculates a second cumulative total based on the orthogonal signal component input into the quadrature modulator and an orthogonal signal component of the feedback signal. Based on the first and the second cumulative totals, a time difference between the inphase signal component and the orthogonal signal component is determined. The inphase signal component and the orthogonal signal component to be provided to the quadrature modulator are adjusted based on the time difference such that the time difference is compensated for.
摘要翻译：所公开的正交调制系统输入同相信号分量和正交信号分量，并输出由正交调制器正交调制的输出信号。正交调制系统基于输入到正交调制器的同相信号分量和从输出信号获得的反馈信号的同相信号分量来计算第一累积总数。正交调制系统基于输入到正交调制器的正交信号分量和反馈信号的正交信号分量来计算第二累积总数。基于第一和第二累积总数，确定同相信号分量和正交信号分量之间的时间差。基于时间差来调整要提供给正交调制器的同相信号分量和正交信号分量，以便补偿时间差。

58. 发明申请

US20080002983A1 Amplifier control device 有权
标题翻译：放大器控制装置
公开(公告)号：US20080002983A1
公开(公告)日：2008-01-03
申请号：US11589898
申请日：2006-10-31
申请人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Kazuo Nagatani , Yasuhito Funyu , Norio Tozawa , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Hajime Hamada , Kazuo Nagatani , Yasuhito Funyu , Norio Tozawa , Tokuro Kubo
IPC分类号： H04B10/00
CPC分类号： H03F1/0266 , H03F1/0205 , H03F1/0244 , H03F1/32 , H03F3/24
摘要： A bias control signal generation unit detects ON and OFF of a transmission signal input to an amplifier and having a property of a burst according to burst information. The bias control signal generation unit controls a bias voltage to be applied to an amplifier such that an idle current flowing through the amplifier can be flowing in a larger amount in a transmission OFF period, and can return to a normal level in a transmission ON period.
摘要翻译：偏置控制信号生成单元根据突发信息检测输入到放大器的发送信号的接通和关断，并具有突发的性质。偏置控制信号发生单元控制要施加到放大器的偏置电压，使得流过放大器的空闲电流可以在传输关闭时段内以较大的量流动，并且可以在传输开启周期中恢复到正常电平。

59. 发明申请

US20070195909A1 Signal peak voltage suppression apparatus 有权
标题翻译：信号峰值电压抑制装置
公开(公告)号：US20070195909A1
公开(公告)日：2007-08-23
申请号：US11443072
申请日：2006-05-31
申请人： Hiroyoshi Ishikawa , Hajime Hamada , Kazuo Nagatani , Nobukazu Fudaba , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Hajime Hamada , Kazuo Nagatani , Nobukazu Fudaba , Tokuro Kubo
IPC分类号： H04B15/00
CPC分类号： H04L27/2624 , H03G7/00 , H03G11/00
摘要： As in a conventional technology, a hard clipping process and a filtering process are performed on a transmission signal. An original transmission signal is subtracted from a signal on which the processes have been performed, and an inverse sign signal to the suppressed signal is retrieved. By giving a gain to the signal, and adding up to the original transmission signal, a peak voltage is suppressed. The gain can be a ratio of a difference signal between a hard clipped signal and an original transmission signal to a signal of suppression of a filtered signal from the original transmission signal, or a value determined by a simulation depending on the cutoff frequency of a low pass filter used in the filtering process.
摘要翻译：像传统技术一样，对发送信号执行硬削波处理和滤波处理。从已经执行了处理的信号中减去原始发送信号，并且检索到抑制信号的逆信号。通过给信号增益，并加上原始的传输信号，抑制峰值电压。增益可以是硬削波信号和原始发送信号之间的差分信号与来自原始发送信号的滤波信号的抑制信号的比率，或者通过根据低频的截止频率的模拟确定的值过滤器用于过滤过程。

60. 发明申请

US20050238114A1 Quadrature modulation system 有权
标题翻译：正交调制系统
公开(公告)号：US20050238114A1
公开(公告)日：2005-10-27
申请号：US10945316
申请日：2004-09-20
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Hajime Hamada , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Hajime Hamada , Tokuro Kubo
IPC分类号： H04L27/20 , H04L27/00 , H04L27/36
CPC分类号： H04L27/0014 , H03C2200/0058 , H03C2200/0079 , H04L27/364 , H04L2027/0016 , H04L2027/0018
摘要： A disclosed quadrature modulation system inputs an inphase signal component and an orthogonal signal component, and outputs an output signal that is quadrature modulated by a quadrature modulator. The quadrature modulation system calculates a first cumulative total based on the inphase signal component input into the quadrature modulator and an inphase signal component of a feedback signal obtained from the output signal. The quadrature modulation system calculates a second cumulative total based on the orthogonal signal component input into the quadrature modulator and an orthogonal signal component of the feedback signal. Based on the first and the second cumulative totals, a time difference between the inphase signal component and the orthogonal signal component is determined. The inphase signal component and the orthogonal signal component to be provided to the quadrature modulator are adjusted based on the time difference such that the time difference is compensated for.
摘要翻译：所公开的正交调制系统输入同相信号分量和正交信号分量，并输出由正交调制器正交调制的输出信号。正交调制系统基于输入到正交调制器的同相信号分量和从输出信号获得的反馈信号的同相信号分量来计算第一累积总数。正交调制系统基于输入到正交调制器的正交信号分量和反馈信号的正交信号分量来计算第二累积总数。基于第一和第二累积总数，确定同相信号分量和正交信号分量之间的时间差。基于时间差来调整要提供给正交调制器的同相信号分量和正交信号分量，以便补偿时间差。

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