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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。
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公开(公告)号：US07447485B2
公开(公告)日：2008-11-04
申请号：US11367379
申请日：2006-03-06
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。
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公开(公告)号：US20080013646A1
公开(公告)日：2008-01-17
申请号：US11822946
申请日：2007-07-11
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）。
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公开(公告)号：US20070110183A1
公开(公告)日：2007-05-17
申请号：US10568334
申请日：2004-03-31
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。
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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
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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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
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。
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公开(公告)号：US07856069B2
公开(公告)日：2010-12-21
申请号：US12078133
申请日：2008-03-27
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2201/3233
摘要： A distortion compensation apparatus includes an amplifier for amplifying an input signal, a calculation unit for obtaining a distortion compensation coefficient of the amplifier corresponding to an amplitude level of the input signal, based on the input signal input to the amplifier and an output signal output from the amplifier, a memory for storing the distortion compensation coefficient, obtained by the calculation unit, into a write address being made to correspond to the input signal amplitude level, a distortion compensation processing unit for reading out the distortion compensation coefficient from the readout address of the memory, and for performing distortion compensation processing of the input signal using the distortion compensation coefficient, and an address generator for generating the write address and the readout address, based on the input signal amplitude level.
摘要翻译： 失真补偿装置包括：放大器，用于放大输入信号;计算单元，用于基于输入到放大器的输入信号和从输入信号输出的输出信号获得对应于输入信号的幅度电平的放大器的失真补偿系数; 所述放大器，用于将由所述计算单元获得的所述失真补偿系数的存储器存储为与所述输入信号幅度电平相对应的写入地址;失真补偿处理单元，用于从所述输出信号幅度电平的读出地址读出所述失真补偿系数; 存储器，以及使用失真补偿系数执行输入信号的失真补偿处理，以及用于基于输入信号幅度电平产生写入地址和读出地址的地址发生器。
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公开(公告)号：US07782153B2
公开(公告)日：2010-08-24
申请号：US11429355
申请日：2006-05-05
IPC分类号： H03L1/00
CPC分类号： H03C5/00
摘要： A timing adjusting method detects a phase error between a main signal path from which a transmitting signal is obtained and a control signal path from which a voltage control signal is obtained, based on a to-be-amplified signal that is to be amplified and represents an amplitude or a power of the transmitting signal prior to amplification and a feedback signal that represents an amplitude or a power of the transmitting signal after the amplification, adjusts an amount of delay of at least one of the main signal path and the control signal path so as to mutually cancel the phase error, and amplifies the transmitting signal from the main signal path depending on the voltage control signal from the control signal path. The detecting the phase error may include detecting polarity transition points of a slope of a waveform of the to-be-amplified signal or the feedback signal, and measuring the phase error using the detected polarity transition points.
摘要翻译： 代表定时调整方法，根据要放大的被放大信号，检测获得发送信号的主信号路径与获得电压控制信号的控制信号路径之间的相位误差， 在放大之前的发送信号的幅度或功率以及表示放大后的发送信号的幅度或功率的反馈信号，调整主信号路径和控制信号路径中的至少一个的延迟量 以便相互抵消相位误差，并且根据来自控制信号路径的电压控制信号放大来自主信号路径的发送信号。 检测相位误差可以包括检测被放大信号或反馈信号的波形的斜率的极性转变点，以及使用检测到的极性转变点来测量相位误差。
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公开(公告)号：US20080204136A1
公开(公告)日：2008-08-28
申请号：US12078133
申请日：2008-03-27
IPC分类号： H03F1/32
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2201/3233
摘要： A distortion compensation apparatus includes an amplifier for amplifying an input signal, a calculation unit for obtaining a distortion compensation coefficient of the amplifier corresponding to an amplitude level of the input signal, based on the input signal input to the amplifier and an output signal output from the amplifier, a memory for storing the distortion compensation coefficient, obtained by the calculation unit, into a write address being made to correspond to the input signal amplitude level, a distortion compensation processing unit for reading out the distortion compensation coefficient from the readout address of the memory, and for performing distortion compensation processing of the input signal using the distortion compensation coefficient, and an address generator for generating the write address and the readout address, based on the input signal amplitude level.
摘要翻译： 失真补偿装置包括：放大器，用于放大输入信号;计算单元，用于基于输入到放大器的输入信号和从输入信号输出的输出信号获得对应于输入信号的幅度电平的放大器的失真补偿系数; 所述放大器，用于将由所述计算单元获得的所述失真补偿系数的存储器存储为与所述输入信号幅度电平相对应的写入地址;失真补偿处理单元，用于从所述输出信号幅度电平的读出地址读出所述失真补偿系数; 存储器，以及使用失真补偿系数执行输入信号的失真补偿处理，以及用于基于输入信号幅度电平产生写入地址和读出地址的地址发生器。
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20.发明申请Multicarrier signal transmission apparatus and multicarrier signal transmission method 审中-公开多载波信号传输装置和多载波信号传输方法公开(公告)号：US20070178853A1
公开(公告)日：2007-08-02
申请号：US11411782
申请日：2006-04-27
CPC分类号： H04L27/2623
摘要： A multicarrier signal transmission apparatus provided with a hard clip suppression unit for hard clipping a peak part of a multicarrier signal, a low pass filter for filtering the signal hard clipped by the hard clip suppression unit, and a peak suppression unit for suppressing the peak part of the signal after filtering by the low pass filter, the peak suppression unit provided with a peak detection unit for detecting a peak part of the filtered signal, a window function generation unit for generating a window function of an amplitude in accordance with a peak level of the peak part, and a peak suppressor for attenuating the peak part in accordance with the value of the window function.
摘要翻译： 一种多载波信号传输装置，具备用于硬削减多载波信号的峰值部分的硬片抑制部，对由硬片夹抑制部进行了硬削波的信号进行滤波的低通滤波器，以及抑制峰部分的峰值抑制部 所述峰值抑制单元设置有用于检测滤波信号的峰值部分的峰值检测单元，用于根据峰值电平产生振幅的窗口函数的窗口函数生成单元， 的峰值抑制器，以及用于根据窗口函数的值衰减峰值部分的峰值抑制器。
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