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。

公开(公告)号：US06737918B2

公开(公告)日：2004-05-18

申请号：US10629134

申请日：2003-07-29

申请人： Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Toru Maniwa

发明人： Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Toru Maniwa

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F1/3294 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433 ,  H04L27/368

摘要： An input complex base band signal x(t) is complex-multiplied by a distortion compensation coefficient h(p), quadrature-modulated by a quadrature modulator QMOD, and input into a power amplifier AMP. A part of the output from the power amplifier AMP is input into a band pass filter BPF, the band pass filter BPF extracts an adjacent channel leakage power band, and a power detector detects an adjacent channel leakage power value. A distortion compensation coefficient arithmetic unit GA using a genetic algorithm computes a distortion compensation coefficient based on an adjacent channel leakage power value on an adjacent channel leakage power ratio and an input complex base band signal x(t), and outputs a distortion compensation coefficient h(p) as a function of a power value p of the input complex base band signal.

摘要翻译： 输入复基带信号x（t）被正交调制器QMOD正交调制的失真补偿系数h（p）复乘，并输入到功率放大器AMP。 来自功率放大器AMP的输出的一部分被输入到带通滤波器BPF中，带通滤波器BPF提取相邻信道泄漏功率带，并且功率检测器检测相邻信道泄漏功率值。 使用遗传算法的失真补偿系数算术单元GA根据相邻信道泄漏功率比的相邻信道泄漏功率值和输入复基带信号x（t）计算失真补偿系数，并输出失真补偿系数h （p）作为输入复基带信号的功率值p的函数。

公开(公告)号：US6108548A

公开(公告)日：2000-08-22

申请号：US924051

申请日：1997-08-28

申请人： Hideto Furukawa ,  Yasuyuki Oishi ,  Kazuo Nagatani ,  Yoshiharu Tajima ,  Hidenobu Fukumasa

发明人： Hideto Furukawa ,  Yasuyuki Oishi ,  Kazuo Nagatani ,  Yoshiharu Tajima ,  Hidenobu Fukumasa

IPC分类号： H04B7/02 ,  H04W36/18 ,  H04Q7/32

CPC分类号： H04B7/022 ,  H04W36/18

摘要： A mobile station is provided which does not cause a reduction in the speech transmission capacity. Branches receive radio signals from base stations and operate independently of one another. A branch operation control section controls the operation of the individual branches to detect a destination-side base station based on the reception levels of signals from surrounding base stations, to cause part of the branches to establish synchronization of spreading code and carrier frequency with respect to the destination-side base station while causing the other part of the branches to maintain communication with a departure-side base station after the destination-side base station is detected, and to cut off the communication with the departure-side base station after the synchronization is established.

摘要翻译： 提供了不会导致语音传输能力降低的移动台。 分支机构接收来自基站的无线电信号，并且彼此独立地操作。 分支操作控制部分基于来自周围基站的信号的接收电平来控制各个分支的操作​​以检测目的地侧基站，以使部分分支建立扩展码和载波频率的相对于 目的地侧基站，同时在检测到目的地侧基站之后使分支的其他部分保持与出发侧基站的通信，并且在同步之后切断与出发侧基站的通信 成立

公开(公告)号：US6018545A

公开(公告)日：2000-01-25

申请号：US820552

申请日：1997-03-19

申请人： Hidenobu Fukumasa ,  Yasuyuki Oishi ,  Hideto Furukawa ,  Kazuo Nagatani ,  Yoshiharu Tajima

发明人： Hidenobu Fukumasa ,  Yasuyuki Oishi ,  Hideto Furukawa ,  Kazuo Nagatani ,  Yoshiharu Tajima

IPC分类号： H04B1/707 ,  H04B1/7073 ,  H04K1/00

CPC分类号： H04B1/707

摘要： A plurality of chips generated by spectrum spreading from each of the bits constituting transmission information are distributed along the time axis, and transmitted. At the receiving end, the transmission information is recovered while integrating information of the chips distributed along the time axis. In a first aspect of the present invention, the transmission information is repeated multiple times, and then the resulting information is spread by a spreading code to generate the transmission data. In a second aspect of the present invention, the transmission information is first spread by a spreading code and then interleaved to generate the transmission data.

摘要翻译： 多个由光谱从构成发送信息的比特的扩展产生的切屑沿时间轴分散，并且发送。 在接收端，同时整合沿时间轴分布芯片的信息的发送信息被回收。 在本发明的第一个方面中，传输信息被重复多次，然后将所得的信息由扩展码扩展，以生成发送数据。 在本发明的第二方面中，传输信息首先用扩展码扩展，然后被交织以产生传输数据。

公开(公告)号：US5870668A

公开(公告)日：1999-02-09

申请号：US688443

申请日：1996-07-30

申请人： Takeshi Takano ,  Yasuyuki Oishi ,  Eisuke Fukuda ,  Hideto Furukawa ,  Kazuo Nagatani

发明人： Takeshi Takano ,  Yasuyuki Oishi ,  Eisuke Fukuda ,  Hideto Furukawa ,  Kazuo Nagatani

IPC分类号： H03D7/16 ,  H03F1/32 ,  H04B7/0005

CPC分类号： H03D7/168 ,  H03F1/3241 ,  H03F2200/372

摘要： A amplifier having distortion compensation is employed as a power amplifier for amplifying a linear modulated signal or a low noise amplifier for amplifying a linear modulated signal. The amplifier having distortion compenssation includes an amplifier circuit for amplifying an input signal; an error detecting circuit for obtaining an error signal between the input signal to and an output signal from the amplifier circuit; a coefficient generating circuit for generating compensation coefficients to compensate distortion components of characteristics of the amplifier circuit, based on the error signal according to an adaptive type algorithm; a first outputting circuit for outputting a generated compensation coefficient corresponding to the input signal; and a multiplying circuit for multiplying the generated compensation coefficient to the input signal and inputting a multiplied coefficient to the amplifier circuit.

摘要翻译： 使用具有失真补偿的放大器作为用于放大线性调制信号的功率放大器或用于放大线性调制信号的低噪声放大器。 具有失真补偿的放大器包括用于放大输入信号的放大器电路; 用于获得来自放大器电路的输入信号与输出信号之间的误差信号的误差检测电路; 系数产生电路，用于根据自适应型算法产生补偿系数以补偿放大器电路的特性的失真分量; 第一输出电路，用于输出与输入信号对应的产生的补偿系数; 以及乘法电路，用于将所生成的补偿系数与输入信号相乘，并将乘法系数输入到放大器电路。

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。

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。

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。

公开(公告)号：US07020447B2

公开(公告)日：2006-03-28

申请号：US10010263

申请日：2001-12-06

申请人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Takayoshi Ode ,  Takeshi Takano ,  Toru Maniwa

发明人： Kazuo Nagatani ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Takayoshi Ode ,  Takeshi Takano ,  Toru Maniwa

IPC分类号： H04B1/04

CPC分类号： H03G5/165 ,  H03F1/3247 ,  H03F1/3258 ,  H03F1/3294 ,  H03F2201/3224 ,  H03F2201/3233

摘要： Distortion compensation coefficients for correcting distortion of a transmission power amplifier are stored in a memory beforehand, a distortion compensation coefficient conforming to powers or amplitudes of a present transmit signal and a past transmit signal is read out of the memory, and distortion compensation processing is applied to the transmit signal using this distortion compensation coefficient. The transmit signal thus subjected to distortion compensation processing is then amplified by the transmission power amplifier and the amplified signal is transmitted, and the distortion compensation coefficient is updated based upon the transmit signal before distortion compensation and an output signal from the transmission power amplifier.

公开(公告)号：US06567478B2

公开(公告)日：2003-05-20

申请号：US10037809

申请日：2001-11-07

申请人： Yasuyuki Oishi ,  Takeshi Takano ,  Kazuo Nagatani ,  Tokuro Kubo ,  Takayoshi Ode

发明人： Yasuyuki Oishi ,  Takeshi Takano ,  Kazuo Nagatani ,  Tokuro Kubo ,  Takayoshi Ode

IPC分类号： H04L2549

CPC分类号： H04J1/00 ,  H03F1/3247 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433 ,  H04L27/367 ,  H04W52/52

摘要： In a radio apparatus which compensates for non-linear distortion of a transmission power amplifier, a distributor feeds back the output signal of the transmission power amplifier, an error-signal estimating arithmetic unit digitally estimates an error signal, which is ascribable to non-linear distortion of the power amplifier, using a transmit signal and feedback signal, the transmit signal and the error signal are DA-converted by separate DA converters, and a combiner combines the output signals of the DA converters and inputs the combined signal to the transmission power amplifier to perform distortion compensation.