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81. 发明申请

WO2010136114A1 DIGITAL PREDISTORTER FOR RF POWER AMPLIFIERS 审中-公开
标题翻译：射频功率放大器的数字预测器
公开(公告)号：WO2010136114A1
公开(公告)日：2010-12-02
申请号：PCT/EP2010/002753
申请日：2010-05-05
申请人： UNIVERSITY COLLEGE DUBLIN - NATIONAL UNIVERSITY OF IRELAND, DUBLIN , ZHU, Anding , GUAN, Lei
发明人： ZHU, Anding , GUAN, Lei
IPC分类号： H03F1/32
CPC分类号： H03F1/3258 , H03F1/3294
摘要： A Volterra series-based digital pre-distorter for RF power amplifiers combines look-up-tables and multiplication, along with time division multiplexing to reduce the hardware resources required for implementation.
摘要翻译：用于RF功率放大器的基于Volterra系列的数字预失真器将查找表和乘法以及时分复用结合在一起，以减少实施所需的硬件资源。

82. 发明申请

WO2009109808A2 BASEBAND-DERIVED RF DIGITAL PREDISTORTION 审中-公开
标题翻译：基带传输射频数字预测
公开(公告)号：WO2009109808A2
公开(公告)日：2009-09-11
申请号：PCT/IB2008003944
申请日：2008-12-08
申请人： DALI SYSTEMS CO LTD , KIM WAN JONG , STAPLETON SHAWN PATRICK
发明人： KIM WAN JONG , STAPLETON SHAWN PATRICK
IPC分类号： H03F1/32 , H03F3/189 , H03F3/20 , H04B7/005
CPC分类号： H03F1/3258 , H03F1/3247 , H03F1/3294 , H03F2200/204 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04L25/03038 , H04L25/03343 , H04L2025/03356 , H04L2025/03477
摘要： A baseband-derived RF predistortion system using a lookup table having coefficients extracted at baseband and then applied at RF by means of a vector modulator. The architecture combines the narrowband advantage of envelope predistortion with the accuracy of baseband predistortion, and including compensation for memory effects. A polynomial-based alternative is also described.
摘要翻译：基带衍生的RF预失真系统，其使用具有在基带处提取的系数然后通过矢量调制器在RF处施加的系数的查找表。该架构将包络预失真的窄带优势与基带预失真的精度相结合，并包括对记忆效应的补偿。还描述了基于多项式的替代方案。

83. 发明申请

WO2005091865A3 DIGITAL PREDISTORTION SYSTEM AND METHOD FOR HIGH EFFICIENCY TRASMITTERS 审中-公开
标题翻译：数字预测系统和高效率传输方法
公开(公告)号：WO2005091865A3
公开(公告)日：2007-06-14
申请号：PCT/US2005005636
申请日：2005-02-23
申请人： POWERWAVE TECHNOLOGIES INC , COVA ARMANDO
发明人： COVA ARMANDO
IPC分类号： G06G7/12 , G06G7/18 , H04B1/00 , H04B1/04 , H04B10/04 , H04K1/02 , H04L25/03 , H04L27/00 , H04M1/00
CPC分类号： H03F1/3294 , H03F1/3258 , H03F2201/3209 , H03F2201/3224 , H04L25/03343
摘要： A system for digitally linearizing the nonlinear behaviour of RF high efficiency amplifiers employing baseband predistortion techniques is disclosed. The system provides additive or multiplicative predistortion of the digital quadrature (I/Q) input signal in order to minimize distortion at the output of the amplifier (100, 200). The predistorter (108, 202) uses a discrete-time polynomial kernel to model the inverse transfer characteristic of the amplifier (100, 200), providing separate and simultaneous compensation for nonlinear static distortion, linear dynamic distortion and nonlinear dynamic effects including reactive electrical memory effects. Compensation for higher order reactive and thermal memory effects is embedded in the nonlinear dynamic compensation operation of the predistorter in an IIR filter bank (334). A predistortion controller (420, 520) periodically monitors the output of the amplifier (100, 200) and compares it to the quadrature input signal to compute estimates of the residual output distortion of the amplifier. Output distortion estimates are used to adaptively compute the values of the parameters of the predistorter (108, 202) in response to changes in the amplifier's operating conditions (temperature drifts, changes in modulation input bandwidth, variations in drive level, aging, etc). The predistortion parameter values computed by the predistortion controller are stored in non-volatile memory and used in the polynomial digital predistorter. The digital predistortion system of the invention may provide broadband linearization of highly nonlinear and highly efficient RF amplification circuits including, but not limited to, dynamic load modulation amplifiers.
摘要翻译：公开了一种使用基带预失真技术对RF高效放大器的非线性行为进行数字线性化的系统。该系统提供数字正交（I / Q）输入信号的加法或乘法预失真，以便最小化放大器（100,200）的输出处的失真。预失真器（108,202）使用离散时间多项式内核对放大器（100,200）的逆传递特性进行建模，为非线性静态失真，线性动态失真和包括无功电存储器的非线性动态效应提供单独和同时的补偿效果。高阶无功和热记忆效应的补偿嵌入在IIR滤波器组中的预失真器的非线性动态补偿操作（334）中。预失真控制器（420,520）周期性地监视放大器（100,200）的输出，并将其与正交输入信号进行比较，以计算放大器的剩余输出失真的估计。输出失真估计用于响应于放大器的操作条件（温度漂移，调制输入带宽的变化，驱动电平的变化，老化等）的变化自适应地计算预失真器（108,202）的参数的值。由预失真控制器计算的预失真参数值存储在非易失性存储器中，用于多项式数字预失真器。本发明的数字预失真系统可以提供高度非线性和高效的RF放大电路的宽带线性化，包括但不限于动态负载调制放大器。

84. 发明申请

WO2006016964A2 DIGITAL TRANSMITTER SYSTEM EMPLOYING SELF-GENERATING PREDISTORTION PARAMETER LISTS AND ADAPTIVE CONTROLLER 审中-公开
标题翻译：数字发射机系统使用自发电预防参数列表和自适应控制器
公开(公告)号：WO2006016964A2
公开(公告)日：2006-02-16
申请号：PCT/US2005/021025
申请日：2005-06-14
申请人： POWERWAVE TECHNOLOGIES, INC. , BRAITHWAITE, Richard, Neil
发明人： BRAITHWAITE, Richard, Neil
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H03F1/3235 , H03F1/3247 , H03F1/3258 , H03F2200/192 , H03F2200/198 , H03F2200/204 , H04L27/368
摘要： A method and apparatus for digital predistortion of power amplifiers are disclosed. Successful digital predistortion parameter settings are correlated with the operating conditions that affect the distortion of an amplifier (111). These operating conditions may include input power level, carrier frequency, temperature, DC supply voltage, or others. The successful predistortion parameter settings along with the corresponding operating conditions are stored in a list (224) that is indexed using multi-dimensional attribute vectors. The elements of the list are generated automatically.
摘要翻译：公开了一种用于功率放大器的数字预失真的方法和设备。成功的数字预失真参数设置与影响放大器（111）失真的操作条件相关。这些工作条件可能包括输入功率电平，载波频率，温度，直流电源电压等。成功的预失真参数设置连同对应的操作条件被存储在使用多维属性向量索引的列表（224）中。列表中的元素是自动生成的。

85. 发明申请

WO2005074121A1 TRANSMITTER PREDISTORTION CIRCUIT AND METHOD THEREFOR 审中-公开
标题翻译：发射机预测电路及其方法
公开(公告)号：WO2005074121A1
公开(公告)日：2005-08-11
申请号：PCT/US2005/002316
申请日：2005-01-24
申请人： CRESTCOM, INC. , MCCALLISTER, Ronald, D.
发明人： MCCALLISTER, Ronald, D.
IPC分类号： H03D3/24
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/3252 , H03F1/3258 , H03F1/3294 , H03F1/34 , H03F3/24 , H03F2200/336 , H03H17/0294 , H04B1/0475 , H04B2001/0425 , H04B2001/0433 , H04L5/06 , H04L27/2614
摘要： A digital communications transmitter (100) includes a digital linear-and-nonlinear predistortion section (200, 1800, 2800) to compensate for linear and nonlinear distortion introduced by transmitter-analog components (120). A direct-digital-downconversion section (300) generates a complex digital return-data stream (254) from the analog components (120) without introducing quadrature imbalance. A relatively low resolution exhibited by the return-data stream (254) is effectively increased through arithmetic processing. Distortion introduced by an analog-to-digital converter (304) may be compensated using a variety of adaptive techniques. Linear distortion is compensated using adaptive techniques with an equalizer (246) positioned in the forward-data stream (112). Nonlinear distortion is then compensated using adaptive techniques with a plurality of equalizers (226) that filter a plurality of orthogonal, higher-ordered-basis functions (214) generated from the forward-data stream (112). The filtered-basis functions are combined together and subtracted from the forward-data stream (112).
摘要翻译：数字通信发射机（100）包括数字线性和非线性预失真部分（200，1800，2800），以补偿由发射机 - 模拟部件（120）引入的线性和非线性失真。直接数字下变频部分（300）从模拟部件（120）生成复杂的数字返回数据流（254），而不引入正交不平衡。返回数据流（254）显示的相对低的分辨率通过算术处理有效地增加。可以使用各种自适应技术来补偿由模数转换器（304）引入的失真。使用位于前向数据流（112）中的均衡器（246）的自适应技术来补偿线性失真。然后使用具有多个均衡器（226）的自适应技术来补偿非线性失真，所述多个均衡器对从前向数据流（112）生成的多个正交，高阶基函数（214）进行过滤。滤波的基函数被组合在一起并从前向数据流（112）中减去。

86. 发明申请

WO2005027342A1 POWER AMPLIFIER WITH IMPROVED LINEARITY AND EFFICIENCY 审中-公开
标题翻译：功率放大器具有改进的线性和有效性
公开(公告)号：WO2005027342A1
公开(公告)日：2005-03-24
申请号：PCT/CA2004/001465
申请日：2004-08-06
申请人： NORTEL NETWORKS LIMITED
发明人： WESSEL, David, Neil , ILOWSKI, John , REPETA, Morris
IPC分类号： H03G3/20
CPC分类号： H03F1/56 , H03F1/0222 , H03F1/3247 , H03F1/3258 , H03F3/20 , H03F2200/102 , H03F2200/378 , H03F2201/3233
摘要： A variable capacitance and control system used in a compensative manner to improve efficiency in power amplifier arrangements arranged to receive a power input which is voltage-modulated responsive to at least one control signal representative of the data signal. Also included are methods and software for controlling said power amplifier arrangements including the variable capacitance and control system. The data input to the power amplifier is predistorted and the resulting power amplification is substantially linear. The arrangement may be used in wireless base station transmitters, for example. Improved data transmission services are also provided which make use of such power amplifiers
摘要翻译：以补偿方式使用的可变电容和控制系统，以提高功率放大器装置的效率，该功率放大器装置布置成接收响应于表示数据信号的至少一个控制信号进行电压调制的功率输入。还包括用于控制包括可变电容和控制系统的所述功率放大器装置的方法和软件。输入到功率放大器的数据是预失真的，所得功率放大基本上是线性的。例如，该布置可以用于无线基站发射机。还提供了改进的数据传输服务，其利用这种功率放大器

87. 发明申请

WO2003030353A2 AN AMPLIFIER PRE-DISTORTER METHOD AND APPARATUS 审中-公开
标题翻译：放大器前散射器方法和设备
公开(公告)号：WO2003030353A2
公开(公告)日：2003-04-10
申请号：PCT/GB2002/004388
申请日：2002-09-27
申请人： ROKE MANOR RESEARCH LIMITED , DOMOKOS, John
发明人： DOMOKOS, John
IPC分类号： H03F
CPC分类号： H03F1/3258 , H03F1/3294
摘要： An amplifier pre-distorter method and apparatus squares and input signal and splits the signal into inphase and quadrature parts which are processed to generate a polynomial predistortion signal. This simplifies the apparatus and enables implementation in an application specific integrated circuit.
摘要翻译：放大器预失真器方法和设备对输入信号进行平方和输入，并将信号分成同相和正交部分，处理该同相和正交部分以生成多项式预失真信号。这简化了设备并且使得可以在专用集成电路中实施。

88. 发明申请

WO0141528A2 SECOND ORDER PREDISTORTOR FOR A RETURN LASER TRANSMITTER 审中-公开
标题翻译：用于返回激光发射器的第二订单预测器
公开(公告)号：WO0141528A2
公开(公告)日：2001-06-14
申请号：PCT/US0027813
申请日：2000-10-10
申请人： GEN INSTRUMENT CORP
发明人： ZHOU SHUTONG
IPC分类号： H03F1/32 , H04B10/155
CPC分类号： H03F1/3258 , H04B10/503 , H04B10/58
摘要： The invention provides a second order predistortion circuit which reduces distortions generated by an optical return laser transmitter. The predistortion circuit uses emitter follower as a second order distortion generator. Controlling the emitter D.C. current, the level of second order distortion signals can be easily controlled over a wide range. This predistortion circuit can be confirmed with a digital control circuit for laser distortion compensation over temperature.
摘要翻译：本发明提供了一种减少由光学返回激光发射器产生的失真的二阶预失真电路。预失真电路使用射极跟随器作为二阶失真发生器。控制发射极直流电流，可以在较宽的范围内容易地控制二阶失真信号的电平。该预失真电路可以用数字控制电路确认，以实现温度下的激光失真补偿。

89. 发明申请

WO01008320A1 METHOD AND APPARATUS FOR DISTORTION COMPENSATION OF RADIO DEVICE 审中-公开
标题翻译：无线电设备失真补偿的方法和装置
公开(公告)号：WO01008320A1
公开(公告)日：2001-02-01
申请号：PCT/JP1999/004037
申请日：1999-07-28
IPC分类号： H03F1/32 , H03G3/32 , H03G5/16 , H04B3/04 , H03G3/30 , H04L27/00
CPC分类号： H03G5/165 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H03F2201/3224 , H03F2201/3233
摘要： A distortion compensating coefficient corresponding to the electric power or amplitude of the transmission signal of the present and the past is read from a memory which stores distortion compensating coefficients for correcting a power amplifier for transmission. The transmission signal is subjected to a compensation process according to the distortion compensation coefficient. The power amplifier amplifies and transmits the transmission signal after the distortion compensation, and the distortion compensation coefficients are updated based on the transmission signals before and after the distortion compensation.
摘要翻译：从存储用于校正功率放大器进行发送的失真补偿系数的存储器读取与当前和过去的发送信号的电功率或振幅对应的失真补偿系数。根据失真补偿系数对发送信号进行补偿处理。功率放大器在失真补偿之后放大并发送发送信号，并且基于失真补偿之前和之后的发送信号来更新失真补偿系数。

90. 发明申请

WO01003287A1 REDUCING DISTORTION OF SIGNALS 审中-公开
标题翻译：减少信号失真
公开(公告)号：WO01003287A1
公开(公告)日：2001-01-11
申请号：PCT/GB2000/002464
申请日：2000-06-27
IPC分类号： H03F1/32
CPC分类号： H03F1/3258 , H03F1/3252
摘要： A predistorter (26) comprises an array (44) of band pass filters (46 to 52) which divide an input signal into components. Each of the components is manipulated using coefficients retrieved from respective look-up tables (54 to 60). The amplitude of each component is used to retrieve a coefficient from its respective look-up table. The amplitude of each component is then multiplied with its respective retrieved coefficient to generate a predistorted amplitude for that component. The predistorted amplitudes are summed (at 80) to produce a predistorted input signal. The predistortion of the input signal is arranged to counter the distortion characteristic of a signal handling element (such as non-linear power amplifier 22 in Fig. 1) to which the predistorted input signal is subsequently supplied. The coefficients in the look-up tables (54 to 60) can be adapted using feed back from the output of the signal handling means (Fig. 5). Fast Fourier transformation and inverse fast Fourier transformation can be used in place of band pass filter array (44) and combiner (80), respectively (Fig. 4).
摘要翻译：预失真器（26）包括将输入信号分成分量的带通滤波器（46至52）的阵列（44）。使用从相应查找表（54至60）检索的系数来操纵每个组件。每个组件的幅度用于从其各自的查找表中检索系数。然后将每个分量的振幅与其相应的检索到的系数相乘以产生该分量的预失真振幅。将预失真幅值相加（在80°）以产生预失真输入信号。输入信号的预失真被设置为对抗随后提供预失真输入信号的信号处理元件（例如图1中的非线性功率放大器22）的失真特性。可以使用从信号处理装置（图5）的输出反馈来调整查找表（54至60）中的系数。可以分别使用快速傅立叶变换和快速傅里叶逆变换代替带通滤波器阵列（44）和组合器（80）（图4）。

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