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1. 发明申请

WO2017127176A1 METHODS, DEVICES, AND ALGORITHMS FOR THE LINEARIZATION OF NONLINEAR TIME VARIANT SYSTEMS AND THE SYNCHRONIZATION OF A PLURALITY OF SUCH SYSTEMS 审中-公开
标题翻译：非线性时变系统线性化的方法，装置和算法以及多个这种系统的同步
公开(公告)号：WO2017127176A1
公开(公告)日：2017-07-27
申请号：PCT/US2016/065910
申请日：2016-12-09
申请人： S9ESTRE, LLC
发明人： SCHAFFERER, Bernd
IPC分类号： H04N21/242
CPC分类号： H04N21/242 , H03F1/3247 , H03F3/24 , H03F2201/3224 , H04L25/00 , H04L27/368
摘要： Methods, devices and algorithms for the linearization of nonlinear time variant systems and the synchronization of a plurality of such systems. One embodiment includes a transmit path, including the power amplifier, as used in wireless transmit systems. Advances made in CMOS technology, digital to analog converter (DAC) technology make it possible to implement a substantial part of such a system in the digital domain. Additional embodiments include the integration of a substantial part of such a transmit system in a single integrated circuit (IC). A digital implementation allows for linearization of a broad range of nonlinear and time variant effects. Another aspects is the reuse of methods, devices, components and algorithms used for the linearization of a transmit system to synchronize and time align multiple transmit systems.
摘要翻译：用于非线性时变系统线性化的方法，设备和算法以及多个这种系统的同步。一个实施例包括如在无线发射系统中使用的包括功率放大器的发射路径。在CMOS技术，数模转换器（DAC）技术方面取得的进展使得在数字领域实现这样一个系统的很大一部分成为可能。另外的实施例包括将这种发射系统的主要部分集成在单个集成电路（IC）中。数字实现允许线性化大范围的非线性和时变效应。另一方面是重用用于传输系统线性化的方法，设备，组件和算法，以同步和时间对齐多个传输系统。

2. 发明申请

WO2017125139A1 ERROR-COMPENSATED DIRECT DIGITAL MODULATION DEVICE 审中-公开
标题翻译：误差补偿直接数字调制设备
公开(公告)号：WO2017125139A1
公开(公告)日：2017-07-27
申请号：PCT/EP2016/051023
申请日：2016-01-19
申请人： HUAWEI TECHNOLOGIES CO., LTD. , PALMERS, Pieter , CHRISTOFFERS, Niels , VANDENAMEELE, Patrick , SAMSOM, Johannes , CORNELISSENS, Koen , VATTI, Sofia
发明人： PALMERS, Pieter , CHRISTOFFERS, Niels , VANDENAMEELE, Patrick , SAMSOM, Johannes , CORNELISSENS, Koen , VATTI, Sofia
IPC分类号： H04L27/36 , H03M1/08 , H04L25/03 , H04B1/30 , H03M1/66 , H03M1/06 , G06F1/06
CPC分类号： H04L27/2627 , G06F1/06 , H03M1/1047 , H03M1/66 , H04B1/0007 , H04B1/123 , H04L25/03 , H04L27/122 , H04L27/368
摘要： The disclosure relates to an error-compensated direct digital modulation device (800), including: a direct digital radio frequency modulator (DDRM) (801), configured to generate a radio frequency (RF) signal (804) based on a modulation of a digital baseband signal (802); an error estimator (803) configured to determine an error signal (806) resulting from a deviation based on the generated RF signal (804) and a representation of the digital baseband signal (802); and an error compensator (805) configured to subtract the error signal (806) from the RF signal (804) to provide an error compensated RF signal (808).
摘要翻译：（800），其包括：直接数字射频调制器（DDRM）（801），其被配置为生成射频（RF）信号（RF） 804）基于数字基带信号（802）的调制; 误差估计器（803），其被配置为基于所生成的RF信号（804）和所述数字基带信号（802）的表示来确定由偏差导致的误差信号（806）; 和误差补偿器（805），被配置为从RF信号（804）中减去误差信号（806）以提供误差补偿的RF信号（808）。

3. 发明申请

WO2017058399A1 RADIO FREQUENCY SYSTEMS AND METHODS FOR POLAR PHASE DISTORTION CALIBRATION 审中-公开
标题翻译：无线电频率系统和极相位失真校准方法
公开(公告)号：WO2017058399A1
公开(公告)日：2017-04-06
申请号：PCT/US2016/048202
申请日：2016-08-23
申请人： APPLE INC.
发明人： LASHKARIAN, Navid , ADABI, Ehsan , JERNG, Albert Chia-Wen , BEHZAD, Arya , PARSA, Ali
IPC分类号： H04B1/04 , H04L27/36 , H03C5/00
CPC分类号： H04B1/0475 , H03C5/00 , H03F1/3241 , H04B1/0483 , H04B2001/0425 , H04L27/36 , H04L27/361 , H04L27/368
摘要： Systems and method provided herein relate to reducing distortion of signals introduced by components on a phase path of a radio frequency system polar architecture. To reduce phase path distortion, a pre-distortion is introduced prior to a distortion caused by the components on the phase path. The pre-distortion in conjunction with the component distortion results in a transmission signal that forms its expected shape.
摘要翻译：本文提供的系统和方法涉及减少由射频系统极地架构的相位路径上的组件引入的信号的失真。为了减少相位路径失真，在由相位路径上的分量引起的失真之前引入预失真。结合分量失真的预失真导致形成其预期形状的传输信号。

4. 发明申请

WO2016078732A1 CIRCUITS FOR LINEARIZING AN OUTPUT SIGNAL OF A NON-LINEAR COMPONENT AND RELATED DEVICES AND METHODS 审中-公开
标题翻译：用于线性化非线性组件的输出信号的电路及相关设备和方法
公开(公告)号：WO2016078732A1
公开(公告)日：2016-05-26
申请号：PCT/EP2014075345
申请日：2014-11-22
申请人： ERICSSON TELEFON AB L M
发明人： GAVERT BJÖRN , GUSTAFSSON TONY
IPC分类号： H03F1/32 , H03F3/195 , H03F3/24 , H04L27/36
CPC分类号： H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2201/3209 , H03F2201/3212 , H03F2201/3224 , H03F2201/3233 , H04B1/40 , H04L25/03343 , H04L27/368
摘要： This disclosure provides a circuit for linearizing an output signal Sout produced by a non-linear component based on an input signal x(n). The circuit comprises a primary pre-distorter module configured to generate a pre-distorted signal y(n) based on the input signal x(n) and a primary pre-distortion function parameterized by a pre-distortion parameter λ and to feed the pre-distorted signal y(n) to the non-linear component. The circuit comprises an estimation module. The estimation module is configured to receive samples z(n) of the output signal Sout, and to determine the pre-distortion parameter λ. The estimation module comprises a secondary pre-distorter module configured to generate a secondary pre-distorter output signal r(n) based on a secondary pre-distortion function and the samples z(n) of the output signal Sout. The secondary pre-distorter module is configured to determine the pre-distortion parameter λ based on a previously determined pre-distortion parameter stored on a data storage, the secondary pre-distorter output signal r(n) and the pre-distorted signal y(n) provided by the primary pre-distorted module. The determining comprises correlating the input signal x(n) with an error signal between the pre-distorted signal y(n) and the secondary pre-distorter output signal r(n).
摘要翻译：本公开提供了一种用于基于输入信号x（n）线性化由非线性分量产生的输出信号Sout的电路。该电路包括：初级预失真器模块，被配置为基于输入信号x（n）和由预失真参数λ参数化的初级预失真函数产生预失真信号y（n）失真信号y（n）到非线性分量。电路包括估计模块。估计模块被配置为接收输出信号Sout的样本z（n），并且确定预失真参数λ。估计模块包括次级预失真器模块，其被配置为基于次级预失真功能和输出信号Sout的样本z（n）产生二次预失真器输出信号r（n）。次级预失真器模块被配置为基于存储在数据存储器上的先前确定的预失真参数来确定预失真参数λ，次级预失真器输出信号r（n）和预失真信号y（ n）由初级预失真模块提供。确定包括将输入信号x（n）与预失真信号y（n）和次预失真器输出信号r（n）之间的误差信号相关联。

5. 发明申请

WO2016000787A1 METHODS, DEVICES, AND COMPUTER PROGRAMS FOR COMPENSATING NONLINEARITIES OF A COMMUNICATION CHANNEL 审中-公开
标题翻译：用于补充通信信道非线性的方法，设备和计算机程序
公开(公告)号：WO2016000787A1
公开(公告)日：2016-01-07
申请号：PCT/EP2014/064311
申请日：2014-07-04
申请人： SES S.A.
发明人： PIAZZA, Roberto , BYSORE RAMA RAO, Bhavani Shankar , OTTERSTEN, Bjorn
IPC分类号： H04L5/06 , H04L27/36
CPC分类号： H04L27/368 , H03F1/3258 , H03F3/24 , H04B7/00 , H04L1/0042 , H04L1/248 , H04L5/06 , H04L25/49 , H04L27/2634 , H04L2027/0026
摘要： A method, carried out by a gateway transmitter (400), aims at compensating the nonlinearities of a communication channel (500) comprising a repeater (510). A plurality of digital signals is modulated (s10) on a plurality of carriers, wherein symbols of the constellation diagram used for modulation of each carrier are distorted in accordance with a pre-distortion function. The modulated signals are then frequency division multiplexed (s20), and sent (s30) for transmission, through the communication channel (500), to at least one receiver (600). The pre-distortion function involves a plurality of polynomial functions, each of which taking as input the symbols from all the carriers. The polynomial functions' coefficients, called "pre-distortion coefficients", are computed according to a direct learning approach, performed jointly for the plurality of carriers. The pre-distortion coefficients are iteratively updated based on received signals being fed back from a receiver (600). The invention also relates to transmitters and computer programs.
摘要翻译：由网关发射机（400）执行的方法旨在补偿包括中继器（510）的通信信道（500）的非线性。在多个载波上调制多个数字信号（s10），其中根据预失真功能使用于每个载波的调制的星座图的符号失真。调制信号然后被频分复用（s20），并通过通信信道（500）发送（s30）至少一个接收机（600）。预失真功能涉及多个多项式函数，每个函数将所有载波的符号作为输入。根据为多个载波共同执行的直接学习方法来计算称为“预失真系数”的多项式函数系数。基于从接收器（600）反馈的接收信号来迭代地更新预失真系数。本发明还涉及发射机和计算机程序。

6. 发明申请

WO2015120087A1 DIRECT-DETECTED ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING WITH DISPERSION PRE-COMPENSATION DIGITAL SIGNAL PROCESSING 审中-公开
标题翻译：直接检测正交频分复用与分散预补偿数字信号处理
公开(公告)号：WO2015120087A1
公开(公告)日：2015-08-13
申请号：PCT/US2015/014509
申请日：2015-02-04
申请人： FUTUREWEI TECHNOLOGIES, INC. , HUAWEI TECHNOLOGIES CO., LTD.
发明人： LI, Chuandong , CHEN, Charles, Chen , ZHANG, Zhuhong
IPC分类号： H04J14/00
CPC分类号： H04L27/2628 , H04B10/25137 , H04L25/03343 , H04L27/2634 , H04L27/368
摘要： Chromatic dispersion is pre-compensated in a direct-detected orthogonal frequency-division multiplexed optical transmitter through digital signal processing methods, to generate signals that can be transmitted over an optical fiber. The dispersion pre-compensation digital signal processing may include multiplying subcarriers by a respective factor. The dispersion pre-compensation digital signal processing may instead include application of a finite impulse response filter to signals. The dispersion pre-compensation digital signal processing may instead include fast Fourier transformations of signals, application of a frequency domain filter to signals generated by the fast Fourier transformations, and inverse fast Fourier transformations of the signals produced by application of the frequency domain filter.
摘要翻译：通过数字信号处理方法在直接检测的正交频分复用光发射机中对色散进行预补偿，以产生可以通过光纤传输的信号。色散预补偿数字信号处理可以包括将副载波乘以相应的因子。分散预补偿数字信号处理可以替代地包括对信号应用有限脉冲响应滤波器。色散预补偿数字信号处理可以替代地包括信号的快速傅里叶变换，对由快速傅里叶变换产生的信号应用频域滤波器，以及通过应用频域滤波器产生的信号的快速傅里叶逆变换。

7. 发明申请

WO2015060414A1 POWER ENCODER AND METHOD FOR MODULATING DATA 审中-公开
标题翻译：用于调制数据的功率编码器和方法
公开(公告)号：WO2015060414A1
公开(公告)日：2015-04-30
申请号：PCT/JP2014/078283
申请日：2014-10-17
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： MA, Rui , ZHU, Qiuyao , TEO, Koon Hoo , DUAN, Chunjie
IPC分类号： H04B1/04 , H03F1/32 , H04L27/36
CPC分类号： H04L25/4902 , H03F1/3241 , H03F1/3247 , H03F3/217 , H04B1/0475 , H04B2001/0425 , H04L25/4917 , H04L27/368
摘要： A power encoder includes an amplitude-phase splitter for splitting an input signal into an envelope signal and a phase modulated signal, and a pre-distortion unit for distorting the envelope signal using a look-up table (LUT) to produce a distorted envelope signal. The power encoder also includes a digital converter for combining the distorted envelope signal with the phase modulated signal to produce a distorted input signal, a pulse width modulator (PWM) for modulating the distorted input signal according to the transformation function to produce a modulated signal, and a switch mode power amplifier for amplifying the modulated signal. The look-up table stores a non-linear mapping of a transformation function and a relationship between the distorted input signal and the modulated signal is non-linear.
摘要翻译：功率编码器包括用于将输入信号分解为包络信号和相位调制信号的幅度相位分离器，以及使用查找表（LUT）使包络信号变形的预失真单元，以产生失真包络信号。功率编码器还包括数字转换器，用于将失真包络信号与相位调制信号组合以产生失真的输入信号;脉宽调制器（PWM），用于根据变换函数调制失真的输入信号以产生调制信号; 以及用于放大调制信号的开关模式功率放大器。查找表存储变换函数的非线性映射，并且失真的输入信号和调制信号之间的关系是非线性的。

8. 发明申请

WO2014209540A1 SYSTEMS AND METHODS FOR EQUALIZATION IN RADIO FREQUENCY SIGNAL PATHS 审中-公开
标题翻译：无线电频率信号平衡的系统和方法
公开(公告)号：WO2014209540A1
公开(公告)日：2014-12-31
申请号：PCT/US2014/040210
申请日：2014-05-30
申请人： HARRIS CORPORATION
发明人： PEI, Alexander X. , LEIBY, Edwin McCall, III
IPC分类号： H04B1/04 , H04L27/36 , H04L27/38 , H04B17/00 , H04L25/03
CPC分类号： H04L25/03891 , H03F1/3241 , H04B1/0475 , H04B1/40 , H04B2001/0425 , H04L25/03343 , H04L27/368 , H04L27/38
摘要： The wireless communications device has a transmit signal path including a digital-to-analog converter and associated circuitry, a receive signal path including an analog-to-digital converter, and a magnitude detector sampling the transmit signal path and providing output to a signal controller. The signal controller is configured to determine amplitude distortion and determine phase distortion based upon information from the magnitude detector, and generate an equalization filter (e.g. during power-up of the wireless communication device), based upon the determined amplitude distortion and phase distortion, for pre-distortion of regular traffic output through the transmit signal path. The approach provides compensation for both amplitude and phase based upon the sampling of an output of a magnitude detector in Radio Frequency (RF) signal paths.
摘要翻译：无线通信设备具有包括数模转换器和相关联的电路的发射信号路径，包括模数转换器的接收信号路径和对发射信号路径进行采样并向信号控制器提供输出的幅度检测器。信号控制器被配置为基于来自幅度检测器的信息来确定幅度失真并确定相位失真，并且基于确定的幅度失真和相位失真来生成均衡滤波器（例如，在无线通信设备的上电期间），用于通过发送信号路径预先规定流量输出的失真。该方法基于在射频（RF）信号路径中的幅度检测器的输出的采样来为幅度和相位提供补偿。

9. 发明申请

WO2014197484A1 CONFIGURABLE PRE-EMPHASIS COMPONENT FOR TRANSMISSION CIRCUITRY 审中-公开
标题翻译：用于传输电路的可配置的前置组件
公开(公告)号：WO2014197484A1
公开(公告)日：2014-12-11
申请号：PCT/US2014/040718
申请日：2014-06-03
申请人： QUALCOMM INCORPORATED
发明人： CHENG, Haojen , HUANG, Chiao Cheng , ZHOU, Hao
IPC分类号： H04L27/36 , H03F1/32
CPC分类号： H04L27/368 , H03F1/3247
摘要： A configurable pre-emphasis filter component may be configured based upon measured frequency response (e.g., filter effect) associated with at least one analog filter positioned between a digital predistortion component and a power amplification component of a transmission circuitry. The frequency response may be measured using a calibration signal sent via the transmission circuitry, a loopback circuit, and a reception circuitry. Calibration circuitry may be used with one or more loopback circuits to measure the frequency response of various analog components of the transmission circuitry. The calibration circuitry may also include logic to determine a configuration for the PEF component based upon the measured frequency response.
摘要翻译：可以基于与位于传输电路的数字预失真部件和功率放大部件之间的至少一个模拟滤波器相关联的测量的频率响应（例如，滤波器效应）来配置可配置的预加重滤波器部件。可以使用经由传输电路，环回电路和接收电路发送的校准信号来测量频率响应。校准电路可以与一个或多个环回电路一起使用，以测量传输电路的各种模拟部件的频率响应。校准电路还可以包括基于所测量的频率响应确定PEF分量的配置的逻辑。

10. 发明申请

WO2014188316A1 MULTI-BAND RADIO-FREQUENCY DIGITAL PREDISTORTION 审中-公开
标题翻译：多频无线电频率数字预测
公开(公告)号：WO2014188316A1
公开(公告)日：2014-11-27
申请号：PCT/IB2014/061472
申请日：2014-05-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： ROLLINS, Mark Edward
IPC分类号： H03F1/32 , H03F3/24
CPC分类号： H04B1/0475 , H03F1/3247 , H03F1/3252 , H03F1/3294 , H03F3/24 , H03F2200/111 , H03F2201/3203 , H04B2001/0425 , H04L25/08 , H04L27/368
摘要： Systems and methods for radio frequency digital predistortion in a multiband transmitter (72) are disclosed. In one embodiment, the multi-band transmitter includes a digital upconversion system (76) configured to digitally upconvert digital input signals to provide digital radio frequency signals. Each digital input signal and thus each digital radio frequency signal corresponds to a different band of a multi-band transmit signal to be transmitted by the multi-band transmitter (72). The multi-band transmitter (72) also includes a radio frequency digital predistortion system configured to digitally predistort the digital radio frequency signals to provide predistorted digital radio frequency signals, and a combiner (80) configured to combine the predistorted digital radio frequency signals to provide a multi-band predistorted digital radio frequency signal.
摘要翻译：公开了一种用于多频发射机（72）中的射频数字预失真的系统和方法。在一个实施例中，多频带发射机包括数字上变频系统（76），其被配置为数字上变频数字输入信号以提供数字射频信号。每个数字输入信号和每个数字射频信号对应于要由多频带发射机（72）传输的多频带发射信号的不同频带。多频带发射机（72）还包括一个射频数字预失真系统，被配置为数字地预失真数字射频信号以提供预失真的数字射频信号，以及组合器（80），被配置为组合预失真的数字射频信号以提供多频带预失真数字射频信号。

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