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公开(公告)号：US08433262B2
公开(公告)日：2013-04-30
申请号：US12850998
申请日：2010-08-05
CPC分类号： H03G3/3036 , H04B2001/0416
摘要： A disclosed transmission device includes a voltage control signal generating unit configured to generate a first voltage control signal from a transmission signal, an amplifier configured to amplify the transmission signal in response to the first voltage control signal, a first timing adjusting unit configured to adjust a control timing for the first voltage control signal, and a control timing setting unit configured to set the control timing adjusted by the first timing adjusting unit based on the output signal from the amplifier and the transmission signal.
摘要翻译： 所公开的发送装置包括：电压控制信号生成部，被配置为从发送信号生成第一电压控制信号，被配置为响应于第一电压控制信号放大发送信号的放大器;第一定时调整部， 第一电压控制信号的控制定时，以及控制定时设定单元，被配置为基于来自放大器的输出信号和发送信号来设定由第一定时调整单元调整的控制定时。
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82.发明申请DISTORTION COMPENSATION DEVICE, DISTORTION COMPENSATION METHOD, AND RADIO TRANSMITTER 有权失真补偿装置，失真补偿方法和无线电发射机公开(公告)号：US20130040587A1
公开(公告)日：2013-02-14
申请号：US13558620
申请日：2012-07-26
CPC分类号： H03F1/3258 , H03F1/3241 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2200/105 , H03F2201/3233 , H04B1/0475 , H04B2001/0425
摘要： A distortion compensation device includes: a frequency-characteristic adding unit configured to add a frequency characteristic to an error signal to generate an added error signal, the error signal being a difference between an input signal input to an amplifier and an output signal output from the amplifier; a distortion-compensation-coefficient updating unit configured to update a distortion compensation coefficient for compensating for a distortion characteristic of the amplifier based on the added error signal; and a distortion compensation unit configured to perform distortion compensation on the input signal using the updated distortion compensation coefficient.
摘要翻译： 失真补偿装置包括：频率特性相加单元，被配置为向误差信号添加频率特性以产生相加的误差信号，所述误差信号是输入到放大器的输入信号与从所述输出信号输出的输出信号之间的差 放大器 失真补偿系数更新单元，被配置为基于所添加的误差信号来更新用于补偿所述放大器的失真特性的失真补偿系数; 以及失真补偿单元，被配置为使用更新的失真补偿系数对输入信号执行失真补偿。
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83.发明申请DISTORTION COMPENSATION APPARATUS, TRANSMITTER, AND DISTORTION COMPENSATION METHOD 有权失真补偿装置，发射机和失真补偿方法公开(公告)号：US20130015917A1
公开(公告)日：2013-01-17
申请号：US13542368
申请日：2012-07-05
IPC分类号： H03F1/32
CPC分类号： H03F1/3258 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2201/3233
摘要： A distortion compensation apparatus includes an amplifying unit, a plurality of distortion compensation coefficient storage units, a first address generating unit, a second address generating unit, and a distortion compensating unit. The amplifying unit amplifies an input signal. A plurality of distortion compensation coefficient storage units store the distortion compensation coefficients for compensating for the distortion of the amplifying unit by being associated with two different addresses. The first address generating unit generates a first address based on the current input signal. The second address generating unit generates a second address different from the first address based on the previous input signal. The distortion compensating unit obtains the distortion compensation coefficient corresponding to a combination of the first and second addresses from each of the distortion compensation coefficient storage units and performs a pre-distortion processing for the current input signal to the amplifying unit using the obtained distortion compensation coefficient.
摘要翻译： 失真补偿装置包括放大单元，多个失真补偿系数存储单元，第一地址生成单元，第二地址生成单元和失真补偿单元。 放大单元放大输入信号。 多个失真补偿系数存储单元通过与两个不同的地址相关联来存储用于补偿放大单元的失真的失真补偿系数。 第一地址生成单元基于当前输入信号生成第一地址。 第二地址生成单元基于先前的输入信号生成与第一地址不同的第二地址。 失真补偿单元从每个失真补偿系数存储单元获得与第一和第二地址的组合相对应的失真补偿系数，并使用获得的失真补偿系数对放大单元执行当前输入信号的预失真处理 。
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公开(公告)号：US07969205B2
公开(公告)日：2011-06-28
申请号：US12577019
申请日：2009-10-09
IPC分类号： H03B21/00
CPC分类号： H04L27/2614 , H04B2201/70706 , H04L27/0008 , H04L27/2623
摘要： A technique wherein when signals, the modulation schemes of which are different, are to be combined, performing the peak suppression using amounts of the respective modulation schemes can effectively reduce the PAPR of a resulting combined signal. A peak suppressing method for use in a peak suppressing circuit, which combines input signals of different modulation schemes in a time domain to provide a combined signal, comprises detecting, as a peak, that portion of the combined signal which excesses a threshold value to generate a peak signal in accordance with the peak; converting the peak signal into a frequency domain signal and then dividing it into signals originating from the input signals to use these input-signal-originated signals as respective suppression signals; and adding, to the input signals, the suppression signals having different suppression amounts for the respective modulation schemes, thereby performing the peak suppression.
摘要翻译： 一种技术，其中当要组合其调制方案不同的信号时，使用各个调制方案的量执行峰值抑制可以有效地减少所得到的组合信号的PAPR。 在峰值抑制电路中使用的峰值抑制方法，其组合在时域中的不同调制方案的输入信号以提供组合信号，包括检测超过阈值以产生的组合信号的那部分作为峰值， 根据峰值的峰值信号; 将峰值信号转换为频域信号，然后将其分为来自输入信号的信号，以将这些输入信号发起的信号用作相应的抑制信号; 并且向输入信号添加对于各个调制方案具有不同抑制量的抑制信号，由此执行峰值抑制。
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公开(公告)号：US07920644B2
公开(公告)日：2011-04-05
申请号：US12642003
申请日：2009-12-18
申请人： Hajime Hamada , Hiroyoshi Ishikawa , Yuichi Utsunomiya , Kazuo Nagatani , Nobukazu Fudaba , Shohei Ishikawa
发明人： Hajime Hamada , Hiroyoshi Ishikawa , Yuichi Utsunomiya , Kazuo Nagatani , Nobukazu Fudaba , Shohei Ishikawa
IPC分类号： H04L25/49
CPC分类号： H03F1/3247
摘要： A predistortion apparatus for compensating for a distortion arising from a non linear property in input to output characteristics of an amplifier, by processing calculation of a plurality of coefficients for a plurality of power series defining the predistortion characteristics for a plurality of power ranges, respectively, the predistortion apparatus includes: a coefficient update unit for setting and updating coefficients of the power series to provide the predistortion characteristics for the plurality of power ranges in accordance with a comparison between the input and output of the amplifier; and a determination unit for determining at least one threshold value defining the plurality of power ranges by shifting the threshold value and operating the coefficient update unit for updating the coefficients for each of the power series corresponding to each of the power ranges defined by the shifted threshold value.
摘要翻译： 一种预失真装置，用于通过分别对多个功率范围的多个功率系列的多个功率系列进行计算，以分别对多个功率范围的预失真特性进行处理，来补偿由输入到放大器的输出特性中的非线性特性引起的失真， 预失真装置包括：系数更新单元，用于根据放大器的输入和输出之间的比较，设置和更新功率系列的系数，以提供多个功率范围的预失真特性; 以及确定单元，用于通过偏移所述阈值来确定定义所述多个功率范围的至少一个阈值，并操作所述系数更新单元，用于更新与由所述移位阈值定义的每个功率范围对应的每个功率序列的系数 值。
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公开(公告)号：US20110038400A1
公开(公告)日：2011-02-17
申请号：US12794124
申请日：2010-06-04
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
CPC分类号： H04L27/2337
摘要： A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulation to an output signal of the A/D converter and outputs an in-phase signal and a quadrature signal; and an error detection unit which, based on the in-phase and quadrature signals output from the digital quadrature demodulation unit, detects a time difference error between the sample timing of the in-phase signal component and the sample timing of the quadrature signal component.
摘要翻译： 无线装置包括：A / D转换器，其交替地从模拟形式的正交调制信号中采样同相信号分量和正交信号分量; 数字正交解调单元，对A / D转换器的输出信号进行数字正交解调，并输出同相信号和正交信号; 以及误差检测单元，其基于从数字正交解调单元输出的同相和正交信号，检测同相信号分量的采样定时与正交信号分量的采样定时之间的时差误差。
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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：US20100164620A1
公开(公告)日：2010-07-01
申请号：US12642003
申请日：2009-12-18
申请人： Hajime Hamada , Hiroyoshi Ishikawa , Yuichi Utsunomiya , Kazuo Nagatani , Nobukazu Fudaba , Shohei Ishikawa
发明人： Hajime Hamada , Hiroyoshi Ishikawa , Yuichi Utsunomiya , Kazuo Nagatani , Nobukazu Fudaba , Shohei Ishikawa
IPC分类号： H03F1/26
CPC分类号： H03F1/3247
摘要： A predistortion apparatus for compensating for a distortion arising from a non linear property in input to output characteristics of an amplifier, by processing calculation of a plurality of coefficients for a plurality of power series defining the predistortion characteristics for a plurality of power ranges, respectively, the predistortion apparatus includes: a coefficient update unit for setting and updating coefficients of the power series to provide the predistortion characteristics for the plurality of power ranges in accordance with a comparison between the input and output of the amplifier; and a determination unit for determining at least one threshold value defining the plurality of power ranges by shifting the threshold value and operating the coefficient update unit for updating the coefficients for each of the power series corresponding to each of the power ranges defined by the shifted threshold value.
摘要翻译： 一种预失真装置，用于通过分别对多个功率范围的多个功率系列的多个功率系列进行计算，以分别对多个功率范围的预失真特性进行处理，来补偿由输入到放大器的输出特性中的非线性特性引起的失真， 预失真装置包括：系数更新单元，用于根据放大器的输入和输出之间的比较，设置和更新功率系列的系数，以提供多个功率范围的预失真特性; 以及确定单元，用于通过偏移所述阈值来确定定义所述多个功率范围的至少一个阈值，并操作所述系数更新单元，用于更新与由所述移位阈值定义的每个功率范围对应的每个功率序列的系数 值。
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公开(公告)号：US20100156530A1
公开(公告)日：2010-06-24
申请号：US12639510
申请日：2009-12-16
IPC分类号： H03F1/26
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。
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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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