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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
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。
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公开(公告)号：US20050047521A1
公开(公告)日：2005-03-03
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
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：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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16.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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公开(公告)号：US20070159256A1
公开(公告)日：2007-07-12
申请号：US11387811
申请日：2006-03-24
IPC分类号： H03G3/10
CPC分类号： H03F1/0222
摘要： A timing controller is disclosed that includes: an amplifier part configured to amplify a first input signal in accordance with a control voltage, the first input signal being one of a transmission signal and a signal of a fixed value; a detector part configured to detect envelope information from the output signal of the amplifier part; a controller part configured to determine a delay difference from the transmission signal and the envelope information and transmit a timing control signal based on the delay difference; and a delay corrector part configured to correct the delay of a second input signal in accordance with the timing control signal, the second input signal being one of the transmission signal and a signal of a fixed value. One of the first and second input signals employs the corresponding signal of the fixed value in the case of correcting the delay.
摘要翻译： 公开了一种定时控制器，其包括：放大器部件，被配置为根据控制电压放大第一输入信号，所述第一输入信号是传输信号和固定值的信号之一; 检测器部件，被配置为从放大器部分的输出信号检测包络信息; 控制器部件，被配置为确定与发送信号和包络信息的延迟差异，并基于延迟差发送定时控制信号; 以及延迟校正部，被配置为根据所述定时控制信号来校正第二输入信号的延迟，所述第二输入信号是所述发送信号和固定值的信号之一。 在校正延迟的情况下，第一和第二输入信号之一采用固定值的对应信号。
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公开(公告)号：US07106249B2
公开(公告)日：2006-09-12
申请号：US10920994
申请日：2004-08-18
CPC分类号： H04B17/0085 , H01Q3/267 , H04B17/12
摘要： Disclosed is a phase calibration method for inserting a calibration signal (SC) into main signals (SM1 to SMn) of a plurality of branches in turn, estimating the phase characteristic of an analog circuit to which a respective one of the main signals is input and calibrating the phase of each main signal. The method includes steps of outputting a first combined signal obtained by combining output signals from the analog circuits (62a to 62n) in all branches, outputting a second combined signal obtained by combining the main signals in all branches, extracting the calibration signal by removing the second combined signal from the first combined signal in a calibration signal extracting unit (64), estimating the phase characteristics of the analog circuits, to which the main signals having the inserted calibration signal are input, based upon a change in phase of the calibration signal, and subjecting the main signals to phase adjustment having characteristics that are opposite the phase characteristics.
摘要翻译： 公开了一种用于依次将多个分支的主信号（SM 1至SM n）插入校准信号（SC）的相位校准方法，估计相应一个主信号被输入的模拟电路的相位特性 并校准每个主信号的相位。 该方法包括以下步骤：输出通过在所有分支中组合来自模拟电路（62a至62n）的输出信号而获得的第一组合信号，输出通过组合所有分支中的主信号而获得的第二组合信号，通过 在校准信号提取单元（64）中从所述第一组合信号中去除所述第二组合信号，基于所述校准信号提取单元（64）的相位变化估计输入了具有插入的校准信号的主信号的模拟电路的相位特性 校准信号，并对主信号进行相位调整，具有与相位特性相反的特性。
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公开(公告)号：US07756216B2
公开(公告)日：2010-07-13
申请号：US11443072
申请日：2006-05-31
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。
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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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