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公开(公告)号：US09100263B2
公开(公告)日：2015-08-04
申请号：US13420760
申请日：2012-03-15
CPC分类号： H04L27/368 , H03F1/3247 , H03F2201/3233
摘要： A distortion compensation apparatus for performing distortion compensation processing by applying the inverse properties of distortion properties of the power amplifier to a transmission signal to be input to a power amplifier, includes a plurality of distortion compensation coefficient storage units configured to store a plurality of distortion compensation coefficients used for the distortion compensation processing, an offset correction processing unit configured to subject the distortion compensation coefficient stored in each of the plurality of distortion compensation coefficient storage units to offset correction processing, and to generate distortion compensation coefficients in the case that the offset correction processing has not been performed, corresponding to plurality of distortion compensation coefficient storage units, in a pseudo manner and a distortion compensation processing unit configured to subject the transmission signal to the distortion compensation processing based on the distortion compensation coefficients generated in a pseudo manner.
摘要翻译： 一种用于通过将功率放大器的失真特性的逆特性应用于要输入到功率放大器的发送信号来执行失真补偿处理的失真补偿装置，包括：多个失真补偿系数存储单元，被配置为存储多个失真补偿 用于失真补偿处理的系数;偏移校正处理单元，被配置为对存储在多个失真补偿系数存储单元中的每一个中的失真补偿系数进行偏移校正处理，并且在偏移校正的情况下产生失真补偿系数 以伪方式对应于多个失真补偿系数存储单元进行处理，以及失真补偿处理单元，被配置为使发送信号进行失真补偿处理 基于以伪方式生成的失真补偿系数。
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公开(公告)号：US08787487B2
公开(公告)日：2014-07-22
申请号：US13461928
申请日：2012-05-02
CPC分类号： H04L25/49 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/24 , H03F2200/336 , H03F2201/3212 , H03F2201/3233 , H04B1/0475 , H04B2001/0425 , H04L25/03343 , H04L27/2614 , H04L27/368
摘要： A distortion compensation device which reduces a distortion of an amplifier which is added to an output signal of the amplifier, the distortion compensation device including: a plurality of distortion compensation coefficient storage circuits which stores a plurality of distortion compensation coefficients and outputs the distortion compensation coefficients according to an amplitude of an input signal of the amplifier, a distortion compensating processing circuit which adds the distortion compensation coefficient output from each of the plurality of distortion compensation coefficient storage circuits to the input signal of the amplifier, and a distortion compensation coefficient updating circuit which performs weighting processing on the distortion compensation coefficient output from each of the plurality of distortion compensation coefficient storage circuits to reduce the distortion compensation coefficient and which calculates an update value of the distortion compensation coefficient by using the distortion compensation coefficient which is subjected to the weighting processing.
摘要翻译： 一种失真补偿装置，其减少了放大器的失真，该放大器被加到放大器的输出信号上，失真补偿装置包括：多个失真补偿系数存储电路，存储多个失真补偿系数，并输出失真补偿系数 根据放大器的输入信号的幅度，将从多个失真补偿系数存储电路输出的失真补偿系数与放大器的输入信号相加的失真补偿处理电路和失真补偿系数更新电路 对从多个失真补偿系数存储电路中的每一个输出的失真补偿系数进行加权处理，以减小失真补偿系数，并计算失真补偿系数的更新值 通过使用经受加权处理的失真补偿系数。
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3.发明授权Distortion compensation device, transmitter, and distortion compensation method 有权失真补偿装置，变送器和失真补偿方法公开(公告)号：US08655289B2
公开(公告)日：2014-02-18
申请号：US13367532
申请日：2012-02-07
IPC分类号： H04B1/04
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/34 , H03F3/24 , H03F2201/3224 , H03F2201/3233 , H04B2001/0425 , H04B2001/0433
摘要： A distortion compensation device includes a distortion compensator that predistorts an input signal based on delay signals and distortion compensation coefficients corresponding to the respective delay signals obtained by applying different amounts of delay to the input signal, a calculator that calculates an error signal based on the predistorted input signal and an output signal from an amplifier that amplifies the predistorted input signal, a calculator that calculates prospective distortion compensation coefficients for updating the distortion compensation coefficients, based on the error signal, a saturation processor that performs saturation processing for bringing, when the prospective distortion compensation coefficients do not fall into a preset range, the prospective distortion compensation coefficients into the preset range, and a controller that controls the updating of the distortion compensation coefficients based on pieces of coefficient saturation information indicating whether the saturation processing is performed on the prospective distortion compensation coefficients.
摘要翻译： 失真补偿装置包括：失真补偿器，其基于延迟信号预失真输入信号，以及对应于通过对输入信号应用不同量的延迟而获得的各个延迟信号的失真补偿系数;计算器，其基于预失真来计算误差信号 输入信号和来自放大预失真输入信号的放大器的输出信号，计算器，其基于误差信号计算用于更新失真补偿系数的预期失真补偿系数;饱和处理器，执行饱和处理，以便在预期 失真补偿系数不落入预设范围，预期失真补偿系数为预设范围，以及控制器，其基于系数饱和度信息指示来控制失真补偿系数的更新 是否对预期失真补偿系数执行饱和处理。
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4.发明授权Power amplification device, transmitter, and power amplification control method 有权功率放大器，发射器和功率放大控制方法公开(公告)号：US08525592B2
公开(公告)日：2013-09-03
申请号：US13405441
申请日：2012-02-27
IPC分类号： H03F1/26
CPC分类号： H03F3/24 , H03F1/3247 , H03F1/3258 , H03F3/189 , H03F2200/336 , H03F2201/3233
摘要： A power amplifier amplifies a signal. An error signal calculating unit calculates an error signal in accordance with an input signal and an output from the power amplifier. A distortion compensation unit performs predistortion on the input signal by using distortion compensation coefficients that are generated in accordance with a plurality of delay signals obtained by giving different amounts of delay to the input signal and by using an error signal and outputs the input signal subjected to the predistortion to the signal amplifying unit. A tap interval control unit controls the delay intervals of the delay signals that are used for the predistortion performed by the distortion compensation unit in accordance with signal correlation information calculated from the input signal.
摘要翻译： 功率放大器放大信号。 误差信号计算单元根据输入信号和来自功率放大器的输出来计算误差信号。 失真补偿单元通过使用根据通过对输入信号赋予不同量的延迟而获得的多个延迟信号而产生的失真补偿系数，并且通过使用误差信号，并且输出经受 对信号放大单元的预失真。 抽头间隔控制单元根据从输入信号计算的信号相关信息来控制用于由失真补偿单元执行的预失真的延迟信号的延迟间隔。
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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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6.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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公开(公告)号：US20120224654A1
公开(公告)日：2012-09-06
申请号：US13357504
申请日：2012-01-24
CPC分类号： H04B1/0475 , H03F1/3247
摘要： A transmitter, when the power changes at a certain timing, adjusts the gain for the transmission signal before the application of the distortion compensation process correspondingly to the amplitude of the transmission signal at the certain timing based on the average of the power of a transmission signal before application of the distortion compensation process, obtains a distortion compensation coefficient corresponding to the value of the power of the adjusted transmission signal from the LUT, applies the distortion compensation process to the transmission signal using the obtained distortion compensation coefficient, calculates an update for a distortion compensation coefficient corresponding to the obtained distortion compensation coefficient and stored in the LUT based on an error between the power of the transmission signal amplified by an amplifier and the power of the transmission signal before the application of the distortion compensation process, and updates the LUT using the calculated update.
摘要翻译： 发射机当功率在某一定时变化时，根据传输信号的功率的平均值，在施加失真补偿处理之前调整发送信号的增益，对应于在某个定时的发送信号的幅度 在施加失真补偿处理之前，获得与来自LUT的经调整的发送信号的功率值对应的失真补偿系数，使用所获得的失真补偿系数对发送信号应用失真补偿处理，计算更新 基于由放大器放大的发送信号的功率与施加失真补偿处理之前的发送信号的功率之间的误差，存储在LUT中的失真补偿系数对应于所获得的失真补偿系数，并且更新LUT 使用t 他计算更新。
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8.发明申请DISTORTION COMPENSATION DEVICE, 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：US20120202440A1
公开(公告)日：2012-08-09
申请号：US13367532
申请日：2012-02-07
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/34 , H03F3/24 , H03F2201/3224 , H03F2201/3233 , H04B2001/0425 , H04B2001/0433
摘要： A distortion compensation device includes a distortion compensator that predistorts an input signal based on delay signals and distortion compensation coefficients corresponding to the respective delay signals obtained by applying different amounts of delay to the input signal, a calculator that calculates an error signal based on the predistorted input signal and an output signal from an amplifier that amplifies the predistorted input signal, a calculator that calculates prospective distortion compensation coefficients for updating the distortion compensation coefficients, based on the error signal, a saturation processor that performs saturation processing for bringing, when the prospective distortion compensation coefficients do not fall into a preset range, the prospective distortion compensation coefficients into the preset range, and a controller that controls the updating of the distortion compensation coefficients based on pieces of coefficient saturation information indicating whether the saturation processing is performed on the prospective distortion compensation coefficients.
摘要翻译： 失真补偿装置包括：失真补偿器，其基于延迟信号预失真输入信号，以及对应于通过对输入信号应用不同量的延迟而获得的各个延迟信号的失真补偿系数;计算器，其基于预失真来计算误差信号 输入信号和来自放大预失真输入信号的放大器的输出信号，计算器，其基于误差信号计算用于更新失真补偿系数的预期失真补偿系数;饱和处理器，执行饱和处理，以便在预期 失真补偿系数不落入预设范围，预期失真补偿系数为预设范围，以及控制器，其基于系数饱和度信息指示来控制失真补偿系数的更新 是否对预期失真补偿系数执行饱和处理。
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9.发明申请公开(公告)号：US20110187454A1
公开(公告)日：2011-08-04
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。
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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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