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81. 发明授权

US06757525B1 Distortion compensating apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US06757525B1
公开(公告)日：2004-06-29
申请号：US10280705
申请日：2002-10-25
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Yasuyuki Oishi , Tokuro Kubo , Hajime Hamada , Nobukazu Fudaba , Mitsuharu Hamano , Tohru Sasaki , Yuki Kanno , Koichi Hanada
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Yasuyuki Oishi , Tokuro Kubo , Hajime Hamada , Nobukazu Fudaba , Mitsuharu Hamano , Tohru Sasaki , Yuki Kanno , Koichi Hanada
IPC分类号： H04B104
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/3288 , H03F2200/372 , H04B2001/0425
摘要： In an adaptive predistorter type distortion compensating apparatus for calculating a distortion compensating coefficient by using an adaptive algorithm so as to reduce an error between a reference signal and a feedback signal of a circuit which generates a distortion on the basis of the reference signal, and for compensating the distortion by providing the distortion compensating coefficient to the reference signal, a phase adjustment circuit is provided for determining a phase shift value which reduces a phase difference between a reference signal and a feedback signal, for correcting the phase of the reference signal or the feedback signal by the phase shift value, and for calculating the distortion compensating apparatus after the correction.
摘要翻译：在一种用于通过使用自适应算法来计算失真补偿系数的自适应预失真器类型失真补偿装置中，以便减少参考信号和基于参考信号产生失真的电路的反馈信号之间的误差，并且对于通过向参考信号提供失真补偿系数来补偿失真，提供相位调整电路，用于确定减小参考信号和反馈信号之间的相位差的相移值，用于校正参考信号的相位或通过相移值反馈信号，并且用于在校正之后计算失真补偿装置。

82. 发明授权

US07756216B2 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：US07756216B2
公开(公告)日：2010-07-13
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： H04L25/03
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。

83. 发明授权

US07447485B2 Device and method for controlling a voltage control signal 有权
标题翻译：用于控制电压控制信号的装置和方法
公开(公告)号：US07447485B2
公开(公告)日：2008-11-04
申请号：US11367379
申请日：2006-03-06
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Tokuro Kubo
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H03F1/0222 , H03F1/025 , H03F2200/102 , H03F2200/504 , H03F2200/511
摘要： A device is disclosed that includes an amplification part for a linear transmitter, the amplification part being configured to amplify a transmission signal in accordance with a supply voltage control signal; a generation part configured to generate a power supply signal showing the level of the transmission signal; and a control part configured to output the supply voltage control signal based on the power supply signal. The control part includes a storage part configured to store a series of values of the power supply signal belonging to a time range including a certain point of time; and an output part configured to output a maximum one of a predetermined number of values of the series of values of the power supply signal as the supply voltage control signal at the certain point of time.
摘要翻译：公开了一种包括用于线性发送器的放大部件的装置，所述放大部件被配置为根据电源电压控制信号放大发送信号; 生成部，被配置为生成表示所述发送信号的电平的电源信号; 以及控制部，被配置为基于所述电源信号输出所述电源电压控制信号。控制部包括：存储部，被配置为存储属于包括某个时间点的时间范围的电源信号的一系列值; 以及输出部，其被配置为在所述特定时间点输出所述电源信号的所述一系列值的预定数量的值中的最大值作为所述电源电压控制信号。

84. 发明申请

US20080013646A1 Peak suppression control apparatus 有权
标题翻译：峰值抑制控制装置
公开(公告)号：US20080013646A1
公开(公告)日：2008-01-17
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： H04L25/49
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率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）。

85. 发明授权

US06864745B2 Distortion compensation device 失效
标题翻译：失真补偿装置
公开(公告)号：US06864745B2
公开(公告)日：2005-03-08
申请号：US10687391
申请日：2003-10-15
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Nobukazu Fudaba
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Nobukazu Fudaba
IPC分类号： H03F1/32 , H04B1/04 , H04B1/62 , H04L27/36 , H03F1/26
CPC分类号： H04L27/368 , H03F1/3241 , H03F1/3247 , H03F2201/3233 , H04B1/62 , H04B2001/0425
摘要： In a distortion compensation device which uses distortion compensation coefficients to subject distortion compensation processing to an input signal and supply the result of the distortion compensation processing to a distorting device, calculates the distortion compensation coefficients based on the input signal before distortion compensation and the feedback signal fed back from the output side of the distorting device, and stores the calculated distortion compensation coefficients in association with the input signal, (1) the feedback signal is AD-converted; (2) the AD-converted output is subjected to fast Fourier transform (FFT) processing; (3) the FFT calculation result is used to calculate the value of either the signal-to-noise ratio SNR, or the adjacent channel leakage power ratio ACLR, or the noise level; (4) the delay time occurring in the distorting device and feedback loop is adjusted such that the difference between the above calculated value at the current time and the above calculated value at the immediately preceding time is either zero, or is equal to or less than a threshold value; and, (5) this adjustment processing is repeated to determine the accurate delay time, and based on this delay time the timing of each of the portions of the distortion compensation device is adjusted.
摘要翻译：在失真补偿装置中，使用失真补偿系数对输入信号进行失真补偿处理，并将失真补偿处理的结果提供给失真装置，基于失真补偿前的输入信号和反馈信号计算失真补偿系数从失真装置的输出侧反馈，并将计算出的失真补偿系数与输入信号相关联，（1）反馈信号进行AD转换; （2）AD转换输出经受快速傅里叶变换（FFT）处理; （3）FFT计算结果用于计算信噪比SNR或相邻信道泄漏功率比ACLR或噪声电平的值; （4）调整在失真装置和反馈回路中发生的延迟时间，使得当前时间的上述计算值与前一时刻的上述计算值之间的差为零或等于或小于阈值; 和（5）重复该调整处理以确定准确的延迟时间，并且基于该延迟时间调整失真补偿装置的每个部分的定时。

86. 发明授权

US08737937B2 Distortion compensation apparatus, transmitter, and distortion compensation method 有权
标题翻译：失真补偿装置，变送器和失真补偿方法
公开(公告)号：US08737937B2
公开(公告)日：2014-05-27
申请号：US13542368
申请日：2012-07-05
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba
IPC分类号： H04B1/04
CPC分类号： H03F1/3258 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2201/3233
摘要： A distortion compensation apparatus includes an amplifying unit, a plurality of distortion compensation coefficient storage units, a first address generating unit, a second address generating unit, and a distortion compensating unit. The amplifying unit amplifies an input signal. A plurality of distortion compensation coefficient storage units store the distortion compensation coefficients for compensating for the distortion of the amplifying unit by being associated with two different addresses. The first address generating unit generates a first address based on the current input signal. The second address generating unit generates a second address different from the first address based on the previous input signal. The distortion compensating unit obtains the distortion compensation coefficient corresponding to a combination of the first and second addresses from each of the distortion compensation coefficient storage units and performs a pre-distortion processing for the current input signal to the amplifying unit using the obtained distortion compensation coefficient.
摘要翻译：失真补偿装置包括放大单元，多个失真补偿系数存储单元，第一地址生成单元，第二地址生成单元和失真补偿单元。放大单元放大输入信号。多个失真补偿系数存储单元通过与两个不同的地址相关联来存储用于补偿放大单元的失真的失真补偿系数。第一地址生成单元基于当前输入信号生成第一地址。第二地址生成单元基于先前的输入信号生成与第一地址不同的第二地址。失真补偿单元从每个失真补偿系数存储单元获得与第一和第二地址的组合相对应的失真补偿系数，并使用获得的失真补偿系数对放大单元执行当前输入信号的预失真处理。

87. 发明授权

US08588711B2 Transmission apparatus and distortion compensation method 有权
标题翻译：传输装置和失真补偿方法
公开(公告)号：US08588711B2
公开(公告)日：2013-11-19
申请号：US13234665
申请日：2011-09-16
申请人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Kazuo Nagatani , Yasuyuki Oishi
发明人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Kazuo Nagatani , Yasuyuki Oishi
IPC分类号： H04B1/04 , H03F1/32
CPC分类号： H03F1/3247 , H03F1/3258 , H03F3/189 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3233 , H03M1/0614 , H03M1/66 , H04B1/0475
摘要： A transmission apparatus includes an analog digital converter that performs sampling on a demodulated signal obtained by demodulating a part of an output signal, which is produced by amplifying a modulated signal of a baseband signal including a plurality of signals having frequencies separated from each other, at a sampling frequency lower than a frequency of a given intermodulation distortion component and converting the demodulated signal into a digital signal, a detection section that detects an aliasing component of the given intermodulation distortion component produced by the conversion of the analog digital converter, and a distortion compensation section that compensates an input signal to be modulated for the given intermodulation distortion component in accordance with the detected aliasing component.
摘要翻译：一种发送装置，包括：模拟数字转换器，对通过解调部分输出信号而获得的解调信号进行采样，所述解调信号是通过放大包括具有彼此分离的频率的多个信号的基带信号的调制信号而产生的，采样频率低于给定互调失真分量的频率并将解调信号转换为数字信号;检测部分，其检测通过模拟数字转换器的转换产生的给定互调失真分量的混叠分量;以及失真补偿部分，根据检测到的混叠分量来补偿对于给定的互调失真分量要调制的输入信号。

88. 发明申请

US20120068768A1 TRANSMISSION APPARATUS AND DISTORTION COMPENSATION METHOD 有权
标题翻译：传输装置和失真补偿方法
公开(公告)号：US20120068768A1
公开(公告)日：2012-03-22
申请号：US13234665
申请日：2011-09-16
申请人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Kazuo Nagatani , Yasuyuki Oishi
发明人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Kazuo Nagatani , Yasuyuki Oishi
IPC分类号： H03F1/26 , H03M1/12
CPC分类号： H03F1/3247 , H03F1/3258 , H03F3/189 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3233 , H03M1/0614 , H03M1/66 , H04B1/0475
摘要： A transmission apparatus includes an analog digital converter that performs sampling on a demodulated signal obtained by demodulating a part of an output signal, which is produced by amplifying a modulated signal of a baseband signal including a plurality of signals having frequencies separated from each other, at a sampling frequency lower than a frequency of a given intermodulation distortion component and converting the demodulated signal into a digital signal, a detection section that detects an aliasing component of the given intermodulation distortion component produced by the conversion of the analog digital converter, and a distortion compensation section that compensates an input signal to be modulated for the given intermodulation distortion component in accordance with the detected aliasing component.
摘要翻译：一种发送装置，包括：模拟数字转换器，对通过解调部分输出信号而获得的解调信号进行采样，所述解调信号是通过放大包括具有彼此分离的频率的多个信号的基带信号的调制信号而产生的，采样频率低于给定互调失真分量的频率并将解调信号转换为数字信号;检测部分，其检测通过模拟数字转换器的转换产生的给定互调失真分量的混叠分量;以及失真补偿部分，根据检测到的混叠分量来补偿对于给定的互调失真分量要调制的输入信号。

89. 发明授权

US07848449B2 Offset compensation device 有权
标题翻译：偏移补偿装置
公开(公告)号：US07848449B2
公开(公告)日：2010-12-07
申请号：US10568334
申请日：2004-03-31
申请人： Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba , Tokuro Kubo
发明人： Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba , Tokuro Kubo
IPC分类号： H04L25/49
CPC分类号： H04L27/364 , H03C3/406 , H04L2027/0016 , H04L2027/0018 , H04L2027/0067 , H04L2027/0069
摘要： In an electronic device having a circuit outputting a vector sum of two quadrature vector signals, an offset compensating device compensates the offset contained in the vector sum. The offset compensating device aims to flexibly adapt to deviation in characteristics and performances and various fluctuations, and to compensate offset stably and accurately. The offset compensating device includes a deviation monitor unit creating a vector signal by A/D-converting the aforementioned vector sum and by quadrature-demodulating it and monitoring the deviation of the DC components superposed on the vector signal, and an adaptive control unit updating the compensation vector determined in advance, based on adaptive algorithm minimizing expectation value of the product of the inner product between an increment vector and the compensation vector, and the latest deviation vector, and adding the compensation vector to an offset vector to be inputted, while being superposed on the input signal, to a circuit.
摘要翻译：在具有输出两个正交矢量信号的向量和的电路的电子设备中，偏移补偿装置补偿矢量和中包含的偏移量。偏移补偿装置旨在灵活适应特性，性能和各种波动的偏差，并且稳定和准确地补偿偏移。偏移补偿装置包括：偏差监视器单元，通过对前述矢量和进行A / D转换，并对其进行正交解调并监视叠加在矢量信号上的直流分量的偏差来产生矢量信号;以及自适应控制单元，基于自适应算法，最小化增量向量与补偿向量之间的内积乘积的最终期望值与最新偏差矢量，并将补偿向量加到要输入的偏移向量的预先确定的补偿向量，同时叠加在输入信号上的电路。

90. 发明申请

US20050239419A1 Array-antenna-equipped communication apparatus and method of calibrating array-antenna-equipped communication apparatus 审中-公开
标题翻译：配有阵列天线的通信装置和校准配有阵列天线的通信装置的方法
公开(公告)号：US20050239419A1
公开(公告)日：2005-10-27
申请号：US11166619
申请日：2005-06-24
申请人： Nobukazu Fudaba , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Nobukazu Fudaba , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H01Q21/00 , H04B7/10 , H04B1/02 , H03C7/02 , H04B7/02
CPC分类号： H04B17/21 , H04B17/12 , H04B17/18 , H04B17/19
摘要： In an array-antenna-equipped communication apparatus, a part of a transmission signal after passing through a radio wave transmitter is branched by a directional coupler, combined by a combiner, converted to a baseband signal by a receiver for calibration, analog-converted by an analog-to-digital converter, and input to an adaptive controller as a feedback signal. The adaptive controller calculates a calibration value that minimizes the power of an error signal representing a difference between the feedback signal and a reference signal, which is the transmission signal before passing through the radio wave transmitter, and outputs the calibration value to a corrector for calibration.
摘要翻译：在配有阵列天线的通信装置中，通过无线电波发射机的发送信号的一部分由定向耦合器分支，由组合器组合，由接收机转换为基带信号进行校准，由模数转换器，并作为反馈信号输入到自适应控制器。自适应控制器计算校正值，其使表示反馈信号与参考信号之间的差异的误差信号的功率最小化，该参考信号是通过无线电波发射器之前的传输信号，并将校准值输出到校准器。

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