-
71.发明授权Power amplifier apparatus, distortion compensation coefficient updating method, and transmission apparatus 有权功率放大器装置，失真补偿系数更新方法和发送装置公开(公告)号：US08933752B2
公开(公告)日：2015-01-13
申请号：US13277409
申请日：2011-10-20
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F3/24 , H03F2201/3233
摘要： A power amplifier apparatus that includes a processor that performs a first distortion compensation processing on an input signal using a distortion compensation coefficient to obtain a first signal and an amplifier that amplifies the first signal. The processor performs a second distortion compensation processing the amplified signal using the distortion compensation coefficient to obtain a second signal and updates the distortion compensation coefficient to enable convergence between the first signal and the second signal.
摘要翻译： 一种功率放大器装置，包括处理器，其使用失真补偿系数对输入信号执行第一失真补偿处理以获得第一信号，以及放大器，其放大第一信号。 处理器使用失真补偿系数执行第二失真补偿处理放大信号以获得第二信号，并且更新失真补偿系数，以使能第一信号和第二信号之间的收敛。
-
公开(公告)号：US08571495B2
公开(公告)日：2013-10-29
申请号：US12701923
申请日：2010-02-08
申请人： Kazuo Nagatani , Yuichi Utsunomiya , Hajime Hamada , Hiroyoshi Ishikawa , Nobukazu Fudaba , Shohei Ishikawa
发明人： Kazuo Nagatani , Yuichi Utsunomiya , Hajime Hamada , Hiroyoshi Ishikawa , Nobukazu Fudaba , Shohei Ishikawa
CPC分类号： H04L27/366 , H03F1/3258 , H03F3/195 , H03F3/24 , H03F2201/3233
摘要： A distortion compensation apparatus includes a distortion compensation signal generation unit that performs, on a transmission signal, distortion compensation processing using a series operation; a coefficient updating unit that updates series operation coefficients used for the series operation based on a feedback signal of a power amplification output which is output through power amplification processing of a distortion compensation signal output from the distortion compensation signal generation unit, and based on the distortion compensation signal; a memory that stores the distortion compensation signal corresponding to a transmission signal having a given power value and the feedback signal of the power amplification output as restraint information; and a control unit that performs control so that, in accordance with the power value of the transmission signal, restraint information corresponding to a power value different from the power value of the transmission signal is read and used for updating the series operation coefficients.
摘要翻译： 失真补偿装置包括失真补偿信号生成单元，其对传输信号进行使用串联操作的失真补偿处理; 系数更新单元，其基于通过从失真补偿信号生成单元输出的失真补偿信号的功率放大处理输出的功率放大输出的反馈信号，并且基于失真来更新用于串联运算的串联运算系数 补偿信号; 存储器，其存储与具有给定功率值的发送信号对应的失真补偿信号和功率放大输出的反馈信号作为约束信息; 以及控制单元，其执行控制，使得根据所述发送信号的功率值，读取与所述发送信号的功率值不同的功率值对应的约束信息，并且用于更新所述串联操作系数。
-
73.发明授权公开(公告)号：US08451055B2
公开(公告)日：2013-05-28
申请号：US13011295
申请日：2011-01-21
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： An apparatus includes: a unit that stores the look-up table including distortion compensation coefficients; a unit that selects addresses according to an input signal, acquires coefficients stored at the selected addresses, and performs the predistortion of the input signal by using the acquired coefficients; a unit that calculates an error signal by comparing with the input signal a feedback signal that indicates an output of a power amplifier to which a result of the predistortion is inputted; a unit that calculates coefficients from the error signal and the acquired coefficients by using the adaptive algorithm; a unit that, for each of the selected addresses, selects coefficients as adequate coefficients from among the calculated coefficients according to the error signal; and a unit that, for each of the selected addresses, calculates an average value of the adequate coefficients and replaces a stored coefficient in the look-up table with the average value.
摘要翻译： 一种装置，包括：存储包括失真补偿系数的查找表的单元; 根据输入信号选择地址的单元，获取存储在所选择的地址的系数，并通过使用获取的系数来执行输入信号的预失真; 通过与输入信号进行比较来计算误差信号的单元，反馈信号指示输入预失真结果的功率放大器的输出; 通过使用自适应算法从误差信号和采集的系数计算系数的单元; 对于每个所选择的地址，根据误差信号从所计算的系数中选择系数作为适当系数的单元; 以及对于每个所选择的地址，计算所述适当系数的平均值并且用所述平均值替换所述查找表中存储的系数的单元。
-
74.发明授权Peak suppressing and restoring method, transmitter, receiver, and peak suppressing and restoring system 有权峰值抑制和恢复方法，发射机，接收机和峰值抑制和恢复系统公开(公告)号：US08009756B2
公开(公告)日：2011-08-30
申请号：US12478932
申请日：2009-06-05
CPC分类号： H04L27/2624
摘要： A peak suppressing and restoring method includes suppressing a peak of a signal, starting suppression when a suppression start value is lower than a suppression target value, using a function of a gain characteristic such that a peak amplitude value attains the suppression target value, and restoring the suppressed peak of the signal using an inverse function of the function of the gain characteristic.
摘要翻译： 峰值抑制和恢复方法包括：使用增益特性使得峰值振幅值达到抑制目标值的功能来抑制信号的峰值，抑制开始值低于抑制目标值时的开始抑制，并恢复 信号的抑制峰值使用增益特性的函数的反函数。
-
公开(公告)号：US07991073B2
公开(公告)日：2011-08-02
申请号：US12639510
申请日：2009-12-16
CPC分类号： H03F3/24 , H03F1/3247 , H03F1/3258 , H03F2200/105 , H03F2200/207 , H03F2201/3227 , H03F2201/3233 , H04L27/368
摘要： A distortion compensation apparatus includes a distortion compensation unit that performs distortion compensation processing on a transmission signal by a series operation, a coefficient update unit that updates a group of series operation coefficients used for the series operation based on a feedback signal of transmission signal output that is output after power amplification processing is performed on output of the distortion compensation unit and the transmission signal, an initial coefficient memory that stores the groups of series operation coefficients that become initial values for coefficient update processing by the coefficient update unit, and a power fluctuation detection unit that detects a power fluctuation of the transmission signal and, when the power fluctuation is detected, reads the groups of series operation coefficients from the initial coefficient memory and provides the groups of series operation coefficients to the coefficient update unit.
摘要翻译： 失真补偿装置包括：通过串联运算对发送信号进行失真补偿处理的失真补偿部，基于发送信号输出的反馈信号更新用于串联运算的一组串联运算系数的系数更新部， 在对失真补偿单元和发送信号的输出执行功率放大处理之后输出;存储由系数更新单元存储成为系数更新处理的初始值的串联运算系数组的初始系数存储器，以及功率波动 检测单元，其检测发送信号的功率波动，并且当检测到功率波动时，从初始系数存储器读取串联操作系数组，并将系列操作系数组提供给系数更新单元。
-
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。
-
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。
-
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。
-
79.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。
-
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。
-
-
-
-
-
-
-
-
-
搜索结果
133 条记录 (耗时 0.031 秒)
