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1. 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.

2. 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。

3. 发明申请

US20050226346A1 Distortion compensating apparatus 失效
标题翻译：失真补偿装置
公开(公告)号：US20050226346A1
公开(公告)日：2005-10-13
申请号：US11149730
申请日：2005-06-10
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H03F1/32 , H03F1/34 , H03F3/24 , H04J1/00 , H04J11/00 , H04L27/26 , H04L27/36 , H04L25/03
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.
摘要翻译：公开了一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。具体地说，在由计算单元计算出的失真补偿系数h N + 1（p）被存储在系数存储器中之前，假定将使用失真补偿执行失真补偿系数h n + 1（p）。然后，预先确定将通过该失真补偿获得的信号x（t）* h N + 1（p）将超过DA转换器的极限。如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

4. 发明授权

US06907085B2 Activation method of communications apparatus with a non-linear distortion compensation device 有权
标题翻译：具有非线性失真补偿装置的通信装置的激活方法
公开(公告)号：US06907085B2
公开(公告)日：2005-06-14
申请号：US09805870
申请日：2001-03-14
申请人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi
发明人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi
IPC分类号： H03F1/32 , H04B1/04 , H04L27/00 , H04L27/20 , H04L27/26 , H04B15/00
CPC分类号： H03F1/3247 , H03F1/3282 , H03F1/34 , H03F3/24 , H04B2001/0433
摘要： First, a digital section constituting a linearizer is activated. Then, a feedback loop for updating a distortion compensation coefficient is opened. Then, the analog section on the antenna side is activated from an ADC, including a PA, etc., or a DAC. Then, both the ATT value of an ATT installed in a feedback route for updating the distortion compensation coefficient and the signal delay amount of a signal delay unit are adjusted to make a state such that the distortion compensation coefficient can be accurately updated. Then, the feedback loop is closed, a distortion compensation table having the distortion compensation coefficient as an entry is generated and after the generation is completed, the operation shifts to the normal operation.
摘要翻译：首先，构成线性化器的数字部分被激活。然后，打开用于更新失真补偿系数的反馈回路。然后，天线侧的模拟部分从包括PA等的ADC或DAC激活。然后，调整安装在用于更新失真补偿系数的反馈路径中的ATT的ATT值和信号延迟单元的信号延迟量，使得能够精确地更新失真补偿系数的状态。然后，反馈回路闭合，生成具有作为入口的失真补偿系数的失真补偿表，并且在生成完成之后，操作转移到正常操作。

5. 发明授权

US07551687B2 Distortion compensating apparatus 失效
标题翻译：失真补偿装置
公开(公告)号：US07551687B2
公开(公告)日：2009-06-23
申请号：US11149730
申请日：2005-06-10
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H04K1/02
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： A distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.
摘要翻译：一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。具体地说，在由计算单元计算的失真补偿系数hn + 1（p）被存储在系数存储器中之前，假定将使用失真补偿系数hn + 1（p）进行失真补偿。然后，预先确定将通过该失真补偿获得的信号x（t）* hn + 1（p）是否将超过DA转换器的极限。如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

6. 发明授权

US06980604B2 Transmission device and transmission method 失效
标题翻译：传输装置及传输方式
公开(公告)号：US06980604B2
公开(公告)日：2005-12-27
申请号：US09973613
申请日：2001-10-09
申请人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi , Nobukazu Fudaba
发明人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi , Nobukazu Fudaba
IPC分类号： H03M1/66 , H03F1/32 , H04B1/04 , H04L5/06 , H04L27/01 , H04L25/49
CPC分类号： H04L5/06 , H03F1/3247
摘要： The present invention provides a transmission device for predistorting a digital signal in order to compensate distortion, then amplifying and transmitting it. A digital input signal is converted to a first analog signal by a first D/A converter. Separately, the digital input signal is also subjected to predistortion. A compensating signal is then generated from the digital input signal and the predistorted signal. The compensating signal generated thereby is converted into a second analog signal by a second D/A converter. The first analog signal and second analog signal are then added, this addition operation giving a compensated analog transmission signal. This analog transmission signal is supplied to the amplifier for amplification, and then transmitted via an antenna.
摘要翻译：本发明提供了一种用于对数字信号进行预失真以便补偿失真，然后进行放大和发送的传输装置。数字输入信号由第一D / A转换器转换成第一模拟信号。另外，数字输入信号也经受预失真。然后从数字输入信号和预失真信号产生补偿信号。由此生成的补偿信号由第二D / A转换器转换成第二模拟信号。然后添加第一模拟信号和第二模拟信号，该相加操作给出补偿的模拟传输信号。该模拟传输信号被提供给放大器用于放大，然后经由天线发送。

7. 发明授权

US07012969B2 Distortion compensating apparatus 失效
标题翻译：失真补偿装置
公开(公告)号：US07012969B2
公开(公告)日：2006-03-14
申请号：US09737196
申请日：2000-12-14
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H04L25/03
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.
摘要翻译：公开了一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。具体地说，在由计算单元计算出的失真补偿系数h N + 1（p）被存储在系数存储器中之前，假定将使用失真补偿执行失真补偿系数h n + 1（p）。然后，预先确定将通过该失真补偿获得的信号x（t）* h N + 1（p）将超过DA转换器的极限。如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

8. 发明申请

US20100062733A1 DISTORTION CORRECTION CONTROL APPARATUS AND DISTORTION CORRECTION CONTROL METHOD 有权
标题翻译：失真校正控制装置和失真校正控制方法
公开(公告)号：US20100062733A1
公开(公告)日：2010-03-11
申请号：US12567510
申请日：2009-09-25
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Yasuyuki Oishi
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Yasuyuki Oishi
IPC分类号： H04B1/04
CPC分类号： H03F1/32 , H03F1/3241 , H03F1/3247 , H03F3/19
摘要： A distortion correction control apparatus is for compensating for a burst distortion of a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a generation unit that generates a distortion correction coefficient having reverse characteristics to the foregoing burst distortion; a unit that multiplies the distortion correction coefficient output from the generation unit by the input signal or adds the distortion correction coefficient output from the generation unit to the input signal, upon reception of burst information notifying of switching between presence and absence of the input signal; and an update unit that updates, based on the input signal and a branch signal fed back as an output signal of the transmission amplifier, parameters of functions used for adaptively generating the distortion correction coefficient, and that inputs the updated parameters to the generation unit.
摘要翻译：失真校正控制装置用于补偿由发射目标的输入信号的脉冲串引起的发射放大器的脉冲串失真。该装置包括产生具有与上述突发畸变相反的特性的失真校正系数的生成单元; 一个单元，用于通过输入信号将从生成单元输出的失真校正系数乘以输入信号，或将从生成单元输出的失真校正系数与输入信号相加，或者将通过输入信号存在与不存在切换之间的突发信息相加; 以及更新单元，其基于所述输入信号和作为所述发送放大器的输出信号反馈的分支信号来更新用于自适应地生成所述失真校正系数的功能的参数，并且将更新的参数输入到所述生成单元。

9. 发明授权

US07639755B2 Distortion compensating apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US07639755B2
公开(公告)日：2009-12-29
申请号：US10951040
申请日：2004-09-22
申请人： Hiroyoshi Ishikawa , Tokuro Kubo , Kazuo Nagatani , Yasuyuki Oishi , Hajime Hamada , Nobukazu Fudaba , Toru Maniwa , Hiroyuki Hayashi
发明人： Hiroyoshi Ishikawa , Tokuro Kubo , Kazuo Nagatani , Yasuyuki Oishi , Hajime Hamada , Nobukazu Fudaba , Toru Maniwa , Hiroyuki Hayashi
IPC分类号： H04K1/02
CPC分类号： H03F1/3247 , H03F2201/3231 , H03F2201/3233
摘要： A distortion compensating apparatus calculates a distortion compensation coefficient in such a manner that a difference signal between a reference signal, which is a transmit signal, and a feedback signal will be diminished, updates an old distortion compensation coefficient by the calculated distortion compensation coefficient and applies distortion compensation to the transmit signal based upon this distortion compensation coefficient. In this apparatus, a phase correcting interval, which is for correcting the phase difference between the reference signal and the feedback signal, and a distortion compensation coefficient updating interval are generated alternately, a correction is applied so as to null the phase difference in the phase correcting interval, and the distortion compensation coefficient is updated in the distortion compensation coefficient updating interval.
摘要翻译：失真补偿装置以这样的方式来计算失真补偿系数，使得作为发送信号的参考信号与反馈信号之间的差信号将被减小，通过计算出的失真补偿系数来更新旧的失真补偿系数并应用基于该失真补偿系数对发送信号进行失真补偿。在该装置中，交替地产生用于校正参考信号和反馈信号之间的相位差的相位校正间隔和失真补偿系数更新间隔，进行校正，以使相位中的相位差无效在失真补偿系数更新间隔中更新失真补偿系数。

10. 发明申请

US20050073361A1 Distortion compensator 有权
标题翻译：失真补偿器
公开(公告)号：US20050073361A1
公开(公告)日：2005-04-07
申请号：US10999747
申请日：2004-11-30
申请人： Hajime Hamada , Hiroyoshi Ishikawa , Kazuo Nagatani , Tokuro Kubo , Nobukazu Fudaba , Yasuyuki Oishi , Toru Maniwa , Hiroyuki Hayashi
发明人： Hajime Hamada , Hiroyoshi Ishikawa , Kazuo Nagatani , Tokuro Kubo , Nobukazu Fudaba , Yasuyuki Oishi , Toru Maniwa , Hiroyuki Hayashi
IPC分类号： H03F1/32 , H04L27/36 , H03F1/26
CPC分类号： H03F1/3294 , H03F1/3247 , H03F1/3288 , H03F2201/3233 , H04L27/368
摘要： The distortion compensator which compensates the nonlinearity of a power amplifier in a radio communication device stops the operation of updating the automatic phase adjustment, automatic delay adjustment, equalizer adjustment, and distortion compensation table when something wrong is detected in the input to a distortion compensation unit such as a reference signal, feedback signal, address of the distortion compensation table, and phase value so that the distortion compensation coefficients may not be improperly updated.
摘要翻译：补偿无线电通信装置中的功率放大器的非线性的失真补偿器在失真补偿单元的输入中检测到错误时停止更新自动相位调整，自动延迟调整，均衡器调整和失真补偿表的操作例如参考信号，反馈信号，失真补偿表的地址和相位值，使得失真补偿系数可能不会被不正确地更新。

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