POWER AMPLIFYING APPARATUS
    51.
    发明申请
    POWER AMPLIFYING APPARATUS 有权
    功率放大器

    公开(公告)号:US20090160548A1

    公开(公告)日:2009-06-25

    申请号:US12335572

    申请日:2008-12-16

    IPC分类号: H03F1/02

    CPC分类号: H03F1/0227

    摘要: A power amplifying apparatus includes a high-speed low pass filter which inputs an envelope signal included in a transmission signal therein, a low-speed low pass filter which inputs the envelope signal therein, a determination unit which inputs the envelope signal therein and determines rising or falling of the envelope signal, a selecting unit which selects one of the high-speed low pass filter and the low-speed low pass filter according to a determined result of the determination unit, and a voltage supply unit which generates a voltage based on a signal input according to a selection by the selecting unit and supplies the voltage to a power amplifier which inputs the transmission signal therein so as to amplify a power of the transmission signal.

    摘要翻译: 功率放大装置包括:高速低通滤波器,其输入包括在其中的发送信号中的包络信号;低速低通滤波器,其中输入包络信号;确定单元,其中输入包络信号并确定上升 或包围信号的下降;选择单元,其根据确定单元的确定结果选择高速低通滤波器和低速低通滤波器之一;以及电压供应单元,其基于 根据选择单元的选择输入信号,并将电压提供给输入其中的发送信号的功率放大器,以放大发送信号的功率。

    Transmission device and transmission method
    52.
    发明授权
    Transmission device and transmission method 有权
    传输装置及传输方式

    公开(公告)号:US08433262B2

    公开(公告)日:2013-04-30

    申请号:US12850998

    申请日:2010-08-05

    IPC分类号: H01Q11/12 H04B1/04

    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。

    Peak power reduction method
    53.
    发明授权
    Peak power reduction method 有权
    峰值功率降低方法

    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

    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。

    Predistortion apparatus and predistortion method
    54.
    发明授权
    Predistortion apparatus and predistortion method 有权
    预失真装置和预失真方法

    公开(公告)号:US07920644B2

    公开(公告)日:2011-04-05

    申请号:US12642003

    申请日:2009-12-18

    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。

    WIRELESS APPARATUS AND SIGNAL PROCESSING METHOD
    55.
    发明申请
    WIRELESS APPARATUS AND SIGNAL PROCESSING METHOD 有权
    无线设备和信号处理方法

    公开(公告)号:US20110038400A1

    公开(公告)日:2011-02-17

    申请号:US12794124

    申请日:2010-06-04

    IPC分类号: H04L27/18 H04B1/38

    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。

    PREDISTORTION APPARATUS AND PREDISTORTION METHOD
    56.
    发明申请
    PREDISTORTION APPARATUS AND PREDISTORTION METHOD 有权
    预测装置和预测方法

    公开(公告)号:US20100164620A1

    公开(公告)日:2010-07-01

    申请号:US12642003

    申请日:2009-12-18

    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。

    DISTORTION COMPENSATION APPARATUS AND METHOD
    57.
    发明申请
    DISTORTION COMPENSATION APPARATUS AND METHOD 有权
    失真补偿装置和方法

    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

    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。

    DISTORTION CORRECTION CONTROL APPARATUS AND DISTORTION CORRECTION CONTROL METHOD
    58.
    发明申请
    DISTORTION CORRECTION CONTROL APPARATUS AND DISTORTION CORRECTION CONTROL METHOD 有权
    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

    IPC分类号: H04B1/04

    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。

    Apparatus and method of compensating distortion
    59.
    发明授权
    Apparatus and method of compensating distortion 有权
    补偿失真的装置和方法

    公开(公告)号:US08270530B2

    公开(公告)日:2012-09-18

    申请号:US12555314

    申请日:2009-09-08

    IPC分类号: H04L25/03

    CPC分类号: H03F1/3241 H03F1/3258

    摘要: A distortion compensating apparatus includes a processing circuit that calculates each of a plurality of series operation coefficient pairs based on a transmission signal and a feedback signal of an output from an amplifying circuit performing power amplification of the transmission signal, executes a series operation process with respect to the transmission signal based on the plurality of the series operation coefficient pairs as a distortion compensation of the transmission signal, and inputs a result of the series operation process to the amplifying circuit performing the power amplification, and a selecting unit that, on the basis of power of the transmission signal, selects the series operation process to be executed corresponding to one of the plurality of series operation coefficient pairs, or selects one of the plurality of series operation coefficient pairs to be used in the series operation process to be executed.

    摘要翻译: 失真补偿装置包括:处理电路,其基于发送信号和来自执行发送信号的功率放大的放大电路的输出的反馈信号,计算多个串联运算系数对中的每一个,执行相对于 基于多个串联运算系数对的发送信号作为发送信号的失真补偿,并将串联运算处理的结果输入到执行功率放大的放大电路,以及选择单元,基于 选择与多个串联运算系数对中的一个对应的要执行的串联运算处理,或者选择要在要执行的串联运算处理中使用的多个串联运算系数对之一。