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91. 发明申请

US20130040587A1 DISTORTION COMPENSATION DEVICE, DISTORTION COMPENSATION METHOD, AND RADIO TRANSMITTER 有权
标题翻译：失真补偿装置，失真补偿方法和无线电发射机
公开(公告)号：US20130040587A1
公开(公告)日：2013-02-14
申请号：US13558620
申请日：2012-07-26
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Yuichi Utsunomiya
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Yuichi Utsunomiya
IPC分类号： H03F1/26 , H04B1/04
CPC分类号： H03F1/3258 , H03F1/3241 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2200/105 , H03F2201/3233 , H04B1/0475 , H04B2001/0425
摘要： A distortion compensation device includes: a frequency-characteristic adding unit configured to add a frequency characteristic to an error signal to generate an added error signal, the error signal being a difference between an input signal input to an amplifier and an output signal output from the amplifier; a distortion-compensation-coefficient updating unit configured to update a distortion compensation coefficient for compensating for a distortion characteristic of the amplifier based on the added error signal; and a distortion compensation unit configured to perform distortion compensation on the input signal using the updated distortion compensation coefficient.
摘要翻译：失真补偿装置包括：频率特性相加单元，被配置为向误差信号添加频率特性以产生相加的误差信号，所述误差信号是输入到放大器的输入信号与从所述输出信号输出的输出信号之间的差放大器失真补偿系数更新单元，被配置为基于所添加的误差信号来更新用于补偿所述放大器的失真特性的失真补偿系数; 以及失真补偿单元，被配置为使用更新的失真补偿系数对输入信号执行失真补偿。

92. 发明申请

US20130015917A1 DISTORTION COMPENSATION APPARATUS, TRANSMITTER, AND DISTORTION COMPENSATION METHOD 有权
标题翻译：失真补偿装置，发射机和失真补偿方法
公开(公告)号：US20130015917A1
公开(公告)日：2013-01-17
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： H03F1/32
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。

93. 发明授权

US08712345B2 Distortion compensation device, distortion compensation method, and radio transmitter 有权
标题翻译：失真补偿装置，失真补偿方法和无线电发射机
公开(公告)号：US08712345B2
公开(公告)日：2014-04-29
申请号：US13558620
申请日：2012-07-26
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Yuichi Utsunomiya
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Nobukazu Fudaba , Yuichi Utsunomiya
IPC分类号： H04B1/04 , H04B17/00
CPC分类号： H03F1/3258 , H03F1/3241 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2200/105 , H03F2201/3233 , H04B1/0475 , H04B2001/0425
摘要： A distortion compensation device includes: a frequency-characteristic adding unit configured to add a frequency characteristic to an error signal to generate an added error signal, the error signal being a difference between an input signal input to an amplifier and an output signal output from the amplifier; a distortion-compensation-coefficient updating unit configured to update a distortion compensation coefficient for compensating for a distortion characteristic of the amplifier based on the added error signal; and a distortion compensation unit configured to perform distortion compensation on the input signal using the updated distortion compensation coefficient.
摘要翻译：失真补偿装置包括：频率特性相加单元，被配置为向误差信号添加频率特性以产生相加的误差信号，所述误差信号是输入到放大器的输入信号与从所述输出信号输出的输出信号之间的差放大器失真补偿系数更新单元，被配置为基于所添加的误差信号来更新用于补偿所述放大器的失真特性的失真补偿系数; 以及失真补偿单元，被配置为使用更新的失真补偿系数对输入信号执行失真补偿。

94. 发明授权

US08619905B2 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：US08619905B2
公开(公告)日：2013-12-31
申请号：US12693695
申请日：2010-01-26
申请人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Yuichi Utsunomiya , Kazuo Nagatani
发明人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Yuichi Utsunomiya , Kazuo Nagatani
IPC分类号： H04K1/02
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。

95. 发明授权

US08509349B2 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：US08509349B2
公开(公告)日：2013-08-13
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
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。

96. 发明授权

US07392020B2 Table reference type predistorter 有权
标题翻译：表参考型预失真器
公开(公告)号：US07392020B2
公开(公告)日：2008-06-24
申请号：US10999495
申请日：2004-11-30
申请人： Toru Maniwa , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Toru Maniwa , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H04B1/04
CPC分类号： H04L27/368 , H03F1/3247
摘要： The purpose of the present invention is to compensate the distortion of an amplifier by a predistorter which compensates the distortion of a power amplifier even when a frequency amplitude deviation exists. The predistorter comprises a distortion compensation coefficient storage unit for storing a distortion compensation coefficient corresponding to the reference value using the characteristic quantity of the envelope of a transmission signal before being inputted to the power amplifier as a reference value; and a reference value conversion unit for converting the characteristic quantity into a predetermined value according to the size of the characteristic quantity, and when the characteristic quantity is, for example, the amplitude value of an envelope and the amplitude value is small, that value is rounded up, for example, to an upper-limit value within a linear range of the amplifier.
摘要翻译：本发明的目的是通过预失真器来补偿放大器的失真，该预失真器即使在频率振幅偏差存在时也补偿功率放大器的失真。预失真器包括：失真补偿系数存储单元，用于在输入到功率放大器之前，使用发送信号的包络的特征量作为参考值来存储对应于参考值的失真补偿系数; 以及参考值转换单元，用于根据特征量的大小将特征量转换成预定值，并且当特征量例如是包络的振幅值并且振幅值小时，该值是例如，向上舍入到放大器的线性范围内的上限值。

97. 发明申请

US20050079834A1 Table reference type predistorter 有权
标题翻译：表参考型预失真器
公开(公告)号：US20050079834A1
公开(公告)日：2005-04-14
申请号：US10999495
申请日：2004-11-30
申请人： Toru Maniwa , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Toru Maniwa , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H03F1/32 , H04L27/36 , H04B1/04 , H03F1/26 , H03F1/30 , H04K1/02
CPC分类号： H04L27/368 , H03F1/3247
摘要： The purpose of the present invention is to compensate the distortion of an amplifier by a predistorter which compensates the distortion of a power amplifier even when a frequency amplitude deviation exists. The predistorter comprises a distortion compensation coefficient storage unit for storing a distortion compensation coefficient corresponding to the reference value using the characteristic quantity of the envelope of a transmission signal before being inputted to the power amplifier as a reference value; and a reference value conversion unit for converting the characteristic quantity into a predetermined value according to the size of the characteristic quantity, and when the characteristic quantity is, for example, the amplitude value of an envelope and the amplitude value is small, that value is rounded up, for example, to an upper-limit value within a linear range of the amplifier.
摘要翻译：本发明的目的是通过预失真器来补偿放大器的失真，该预失真器即使在频率振幅偏差存在时也补偿功率放大器的失真。预失真器包括：失真补偿系数存储单元，用于在输入到功率放大器之前，使用发送信号的包络的特征量作为参考值来存储对应于参考值的失真补偿系数; 以及参考值转换单元，用于根据特征量的大小将特征量转换成预定值，并且当特征量例如是包络的振幅值并且振幅值小时，该值是例如，向上舍入到放大器的线性范围内的上限值。

98. 发明授权

US06657493B2 Distortion compensation apparatus and distortion compensation method 有权
标题翻译：失真补偿装置和失真补偿方法
公开(公告)号：US06657493B2
公开(公告)日：2003-12-02
申请号：US10116633
申请日：2002-04-04
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H03F126
CPC分类号： H03F1/3247 , H03F1/3294
摘要： A distortion compensation apparatus returns a part of an amplified output signal of a power amplifier amplifying a transmission signal, reads a distortion compensation signal from a distortion compensation table, multiplies the transmission signal with the distortion compensation signal thereof, and inputs the signal to the power amplifier. The distortion compensation signal corresponding to a signal calculated based on an error signal that is a difference between the transmission signal and the amplified output signal, the distortion compensation signal from the distortion compensation table and the step size parameter, and to a power of the transmission signal. The distortion compensation apparatus comprises a &mgr; control part including a fast Fourier transformation part that obtains a spectrum of the amplified output signal, a calculation part that calculates an adjacent channel leakage power ratio based on the spectrum, and a &mgr; adjusting part that varies the step size parameter by comparing the calculated adjacent leakage power ratio with a threshold value.
摘要翻译：失真补偿装置返回放大发送信号的功率放大器的放大输出信号的一部分，从失真补偿表读出失真补偿信号，将发送信号与其失真补偿信号相乘，并将该信号输入到功率放大器对应于基于作为发送信号和放大输出信号之间的差的误差信号，来自失真补偿表的失真补偿信号和步长参数而计算出的信号的失真补偿信号，以及发送功率的失真补偿信号信号。失真补偿装置包括：mu控制部，包括获取放大的输出信号的频谱的快速傅里叶变换部，基于该频谱计算相邻信道泄漏功率比的计算部;以及改变步骤的mu调整部通过将计算的相邻泄漏功率比与阈值进行比较来确定尺寸参数。

99. 发明授权

US06552609B2 Signal distortion compensating apparatus and method 失效
公开(公告)号：US06552609B2
公开(公告)日：2003-04-22
申请号：US09784601
申请日：2001-02-15
申请人： Hajime Hamada , Yasuyuki Oishi , Takuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Hajime Hamada , Yasuyuki Oishi , Takuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H03F126
CPC分类号： H03F1/3294 , H03F1/3247 , H03F1/3282
摘要： Digital input signals xi and xq are multiplied by an multiplier 31 with a distortion compensation coefficient of a distortion compensation coefficient storage unit 33 and then processed by a modulation/amplification unit 1 for sending in the form of analog output signals Z. The analog output signals Z are fed back for processings by an attenuator 43, a mixer 41, a quadrature demodulator 39, etc., and then fed to subtractors 35i and 35q. The subtractors 35i and 35q find differences (errors) between analog input signals Xi and Xq and analog feedback signals Yi and Yq, respectively, and feeds the analog error signals to ADCs 36i and 36q, respectively. The ADCs 36i and 36q convert the analog error signals into digital signals and feeds the digital signals to a distortion compensation coefficient arithmetic unit 5. The distortion compensation coefficient arithmetic unit 5 figures out a new distortion compensation coefficient to update the distortion compensation coefficient storage unit 33.

100. 发明授权

US06836517B2 Distortion compensating apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US06836517B2
公开(公告)日：2004-12-28
申请号：US09745948
申请日：2000-12-22
申请人： Kazuo Nagatani , Tokuro Kubo , Takayoshi Ode , Yasuyuki Oishi
发明人： Kazuo Nagatani , Tokuro Kubo , Takayoshi Ode , Yasuyuki Oishi
IPC分类号： H04K102
CPC分类号： H04L27/368 , H03F1/3247 , H03F1/3288
摘要： A distortion compensating apparatus for compensating for a distortion of a transmission power amplifier. A delay time decision unit calculates the correlation between a transmission signal and a feedback signal fed back from the output side of the transmission power amplifier while varying phase difference between both signals, and decides the total delay time caused in the transmission power amplifier and a feedback loop on the basis of the phase difference in which the correlation is the maximum. A delay unit delays the transmission signal before a distortion compensation processing by the total delay time, and inputs the delayed signal into a distortion compensating apparatus arithmetic unit, which calculates and stores a distortion compensation coefficient on the basis of the transmission signal and the feedback signal fed back from the output side of the transmission power amplifier. A pre-distortion unit applies a distortion compensation processing to the transmission signal by using the distortion compensation coefficient.
摘要翻译：一种用于补偿发射功率放大器的失真的失真补偿装置。延迟时间决定单元计算发送信号与从发送功率放大器的输出侧反馈的反馈信号之间的相关性，同时改变两个信号之间的相位差，并且确定在发送功率放大器中引起的总延迟时间和反馈基于相关性最大的相位差进行循环。延迟单元将失真补偿处理之前的发送信号延迟总延迟时间，并将延迟信号输入失真补偿装置运算单元，该运算单元基于发送信号和反馈信号计算并存储失真补偿系数从发射功率放大器的输出侧反馈。预失真单元通过使用失真补偿系数对发送信号应用失真补偿处理。

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