公开(公告)号：US20140333377A1

公开(公告)日：2014-11-13

申请号：US14348411

申请日：2011-04-19

Applicant: James Peroulas ,  Aimin You ,  Qun Liao ,  Xiaowei Yan ,  Yiqun Mo ,  Zhaoquan Zeng

Inventor： James Peroulas ,  Aimin You ,  Qun Liao ,  Xiaowei Yan ,  Yiqun Mo ,  Zhaoquan Zeng

IPC: H03F1/32

CPC classification number: H03F1/3247 ,  H03F3/195 ,  H03F3/24 ,  H03F2201/3227 ,  H04L27/367

Abstract: An improved DPD system includes a predistortion module having at least one predistortion function. The predistortion module is configured to receive and subsequently process a baseband signal. The system also includes a power amplifier configured to receive the processed baseband signal from the predistortion module. The system further includes a model calculator configured to program priorities for predistortion functions so that the processed baseband signal transmitted from the predistortion module corresponds to the transmission power of the power amplifier. The model calculator is further configured to send a trigger signal to indicate when data capture from the power amplifier should begin so as to update the predistortion functions. A trigger module in the system is configured to receive the trigger signal and to initiate data capture from the power amplifier upon receipt of the trigger signal.

Abstract translation: 改进的DPD系统包括具有至少一个预失真功能的预失真模块。 预失真模块被配置为接收并随后处理基带信号。 该系统还包括功率放大器，被配置为从预失真模块接收经处理的基带信号。 该系统还包括：模型计算器，被配置为对预失真函数编制优先级，使得从预失真模块发送的经处理的基带信号对应于功率放大器的发送功率。 模型计算器还被配置为发送触发信号以指示何时开始从功率放大器获取数据以便更新预失真功能。 系统中的触发模块被配置为接收触发信号并且在接收到触发信号时从功率放大器启动数据捕获。

公开(公告)号：US20140306762A1

公开(公告)日：2014-10-16

申请号：US14245190

申请日：2014-04-04

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Dali Yang ,  Jia Yang

IPC: H03F1/32 ,  H03F3/24 ,  H03F3/195

CPC classification number: H04L27/368 ,  H03F1/3247 ,  H03F3/189 ,  H03F3/19 ,  H03F3/195 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2201/3224 ,  H03F2201/3227 ,  H03F2201/3233 ,  H04B1/0475 ,  H04L1/0043 ,  H04L1/0044 ,  H04L27/367 ,  H04W52/52

Abstract: A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The power amplifier system further includes a feedback loop providing a signal associated with the output of the power amplifier to the predistortion lookup table and a switch disposed in the feedback loop and operable to disconnect the predistortion lookup table from the output of the power amplifier.

Abstract translation: 功率放大器系统包括可操作以接收反映要传送的信息的原始值的输入和可操作以产生数字查找表密钥的地址数据表。 功率放大器系统还包括耦合到地址数据形成器的预失真查找表和具有输出并耦合到预失真查找表的功率放大器。 功率放大器系统还包括反馈回路，其将与功率放大器的输出相关联的信号提供给预失真查找表，以及设置在反馈回路中的开关，用于将预失真查找表与功率放大器的输出断开。

公开(公告)号：US20140292412A1

公开(公告)日：2014-10-02

申请号：US14240774

申请日：2011-08-30

Applicant: Ariel Feldman ,  Udi Suissa

Inventor： Ariel Feldman ,  Udi Suissa

IPC: H03F1/32

CPC classification number: H03F1/3247 ,  H03F1/3241 ,  H03F2201/3227

Abstract: A device and method of predistortion linearization that account for both EVM and spectral mask are disclosed. The device and method are based on transforming the predistorter optimization problem from the time domain to the frequency domain, and weighting the equations according to one or more desired objectives. One objective focuses on abiding by the spectral mask, whereas another objective focuses on improving the EVM.

Abstract translation: 公开了一种考虑到EVM和光谱掩模两者的预失真线性化的装置和方法。 该装置和方法基于将预失真器优化问题从时域转换到频域，并且根据一个或多个期望目标对方程进行加权。 一个目标着重于遵守光谱掩模，而另一个目标着重于改进EVM。

公开(公告)号：US20140254656A1

公开(公告)日：2014-09-11

申请号：US14282032

申请日：2014-05-20

Applicant: Telefonaktiebolaget L M Ericsson (PUBL)

Inventor： Chunlong Bai

IPC: H04L25/08 ,  H04L29/06 ,  H03F1/32

CPC classification number: H04L25/08 ,  H03F1/3247 ,  H03F3/195 ,  H03F3/245 ,  H03F2201/3227 ,  H03M7/30 ,  H04L25/03343 ,  H04L27/367 ,  H04L69/04 ,  H04N19/63

Abstract: Methods and apparatus are disclosed for compressing and decompressing data to reduce bandwidth requirements in transmissions of predistorted signals between a processing node and a remote transmitting node of a power amplifier with digital predistortion (PA-DPD) system. In the processing node, predistorted signals are decomposed into a high-dynamic range signal of a first sample rate and a low-dynamic range signal of a second sample rate greater than the first sample rate. Samples of both signals are combined to generate a compressed signal for transmission to the remote transmitting node, which decompresses the compressed signal to restore the predistorted signal.

Abstract translation: 公开了用于压缩和解压缩数据的方法和装置，以减少具有数字预失真（PA-DPD）系统的功率放大器的处理节点和远程发送节点之间的预失真信号的传输中的带宽要求。 在处理节点中，预失真信号被分解成第一采样率的高动态范围信号和大于第一采样率的第二采样率的低动态范围信号。 两个信号的样本被组合以产生用于传输到远程发射节点的压缩信号，其解压缩压缩信号以恢复预失真信号。

公开(公告)号：US20130243122A1

公开(公告)日：2013-09-19

申请号：US13443949

申请日：2012-04-11

Applicant: Chunlong Bai

Inventor： Chunlong Bai

IPC: H04L25/49 ,  H03F1/26

CPC classification number: H03F1/3247 ,  H03F2201/3227 ,  H04L27/368

Abstract: Systems and methods are disclosed for compensating for non-linearity of a power amplifier using space mapping based predistortion. In one embodiment, a transmitter includes a power amplifier that amplifies a power amplifier input signal, a predistorter that effects predistortion of the power amplifier input signal to compensate for a non-linear characteristic of the power amplifier using a space mapping based model of an inverse of the non-linear characteristic of the power amplifier, and an adaptation sub-system that adaptively configures the space mapping based model of the non-linear characteristic of the power amplifier. In one embodiment, the adaptation sub-system adaptively configures a space mapping based model of the non-linear characteristic of the power amplifier and adaptively configures the space mapping based model of the inverse of the non-linear characteristic of the power amplifier based on the space mapping based model of the non-linear characteristic of the power amplifier.

Abstract translation: 公开了用于补偿使用基于空间映射的预失真的功率放大器的非线性度的系统和方法。 在一个实施例中，发射机包括放大功率放大器输入信号的功率放大器，预失真器，其利用功率放大器输入信号的预失真来补偿功率放大器的非线性特性，使用基于空间映射的反相模型 功率放大器的非线性特性的自适应子系统，以及自适应地配置基于功率放大器的非线性特性的基于空间映射的模型的自适应子系统。 在一个实施例中，自适应子系统自适应地配置基于功率放大器的非线性特性的基于空间映射的模型，并且基于功率放大器的非线性特性的逆的自相应自适应地配置基于空间映射的模型 基于空间映射的功率放大器非线性特性模型。

公开(公告)号：US20130082775A1

公开(公告)日：2013-04-04

申请号：US13633066

申请日：2012-10-01

Applicant: Aviat U.S., Inc.

Inventor： Frank Matsumoto ,  Youming Qin

IPC: H03F1/32

CPC classification number: H03F1/3247 ,  H03F1/56 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/387 ,  H03F2200/405 ,  H03F2200/408 ,  H03F2200/411 ,  H03F2201/3227

Abstract: An exemplary system comprises a linearizer, a power amplifier, and a feedback block. The linearizer may be configured to use a predistortion control signal to add predistortion to a receive signal to generate a predistorted signal. The power amplifier may be configured to amplify power of the predistorted signal to generate a first amplified signal. The power amplifier may also add high side and low side amplifier distortion to the predistorted signal. The high side and low side amplifier distortion may cancel at least a portion of the predistortion. The feedback block may be configured to capture a feedback signal based on a previous amplified signal from the power amplifier, to determine high side and low side distortion of the captured feedback signal, and to generate the predistortion control signal based on the determined high side and low side distortion.

Abstract translation: 示例性系统包括线性化器，功率放大器和反馈块。 线性化器可以被配置为使用预失真控制信号来将预失真添加到接收信号以产生预失真信号。 功率放大器可以被配置为放大预失真信号的功率以产生第一放大信号。 功率放大器还可以向预失真信号增加高侧和低侧放大器失真。 高侧和低侧放大器失真可能会取消预失真的至少一部分。 反馈块可以被配置为基于来自功率放大器的先前放大的信号捕获反馈信号，以确定所捕获的反馈信号的高侧和低侧失真，以及基于所确定的高侧产生预失真控制信号，以及 低端失真。

公开(公告)号：US20110156815A1

公开(公告)日：2011-06-30

申请号：US12928931

申请日：2010-12-21

Applicant: Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Ying Xiao

Inventor： Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Ying Xiao

IPC: H03F1/26

CPC classification number: H03F1/304 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/087 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/18 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2201/3206 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3215 ,  H03F2201/3224 ,  H03F2201/3227 ,  H04L25/067 ,  H04L25/08 ,  H04L27/0008 ,  H04L27/368 ,  H04W24/02

Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.

Abstract translation: 公开了一种用于在宽带通信系统中实现高效率和高线性度的RF数字混合模式功率放大器系统。 本发明基于对RF域中的功率放大器进行线性化的自适应数字预失真的方法。 本公开使得功率放大器系统能够是现场可重新配置的并且支持多调制方案（调制不可知），多载波和多信道。 结果，数字混合模式功率放大器系统特别适用于诸如基站，中继器和室内信号覆盖系统之类的无线传输系统，其中基带I-Q信号信息不容易获得。

公开(公告)号：US20100156530A1

公开(公告)日：2010-06-24

申请号：US12639510

申请日：2009-12-16

Applicant: Yuichi UTSUNOMIYA ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani

Inventor： Yuichi UTSUNOMIYA ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani

IPC: H03F1/26

CPC classification number: H03F3/24 ,  H03F1/3247 ,  H03F1/3258 ,  H03F2200/105 ,  H03F2200/207 ,  H03F2201/3227 ,  H03F2201/3233 ,  H04L27/368

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07330517B2

公开(公告)日：2008-02-12

申请号：US10718688

申请日：2003-11-24

Applicant: Ilan Taler ,  Dan Wolberg ,  Ran Sharon

Inventor： Ilan Taler ,  Dan Wolberg ,  Ran Sharon

IPC: H04L25/49

CPC classification number: H03F1/32 ,  H03F1/3247 ,  H03F1/3276 ,  H03F2201/3227

Abstract: Apparatus for amplifying an input signal having an input signal power includes a power amplifier, which is adapted to amplify an intermediate signal so as to generate an output signal, and which is characterized by a non-linearity. A non-linear filter is coupled to decompose the input signal into a series of input signal components, each such component proportional to a product of the input signal by a respective integer power of the input signal power, and is adapted to filter the signal components responsively to the non-linearity so as to generate the intermediate signal for input to the power amplifier.

Abstract translation: 用于放大具有输入信号功率的输入信号的装置包括功率放大器，其适于放大中间信号以产生输出信号，其特征在于非线性。 耦合非线性滤波器以将输入信号分解成一系列输入信号分量，每个这样的分量与输入信号乘以输入信号功率的相应整数倍的乘积成比例，并且适于对信号分量进行滤波 响应于非线性，以产生输入到功率放大器的中间信号。

公开(公告)号：US07062234B2

公开(公告)日：2006-06-13

申请号：US10628263

申请日：2003-07-28

Applicant: Josef Ocenasek ,  James C. Giacobazzi

Inventor： Josef Ocenasek ,  James C. Giacobazzi

IPC: H04B1/04 ,  H04K1/02 ,  H04L25/03

CPC classification number: H04B1/0483 ,  H03F1/3247 ,  H03F1/3252 ,  H03F2201/3227 ,  H04B1/0475

Abstract: In an amplifier system having two or more different amplifier sub-systems, the input signal to at least one of the amplifier sub-systems is pre-distorted based on the combined output signal from the two or more amplifier sub-systems. In one embodiment, each other amplifier sub-system pre-distorts its input signal based on only its own output signal. In one operational scenario, during initial operations, each amplifier sub-system separately pre-distorts its input signal based on only its own output signal. After pre-distortion has settled, one of the amplifier sub-systems is switched to pre-distort its input signal based on the combined output signal, while the other amplifier sub-systems continue to pre-distort their input single based on only their own output signals.

Abstract translation: 在具有两个或多个不同放大器子系统的放大器系统中，至少一个放大器子系统的输入信号是基于来自两个或更多个放大器子系统的组合输出信号而被预失真的。 在一个实施例中，每个其他放大器子系统仅基于其自己的输出信号来预失真其输入信号。 在一个操作场景中，在初始操作期间，每个放大器子系统仅基于其自己的输出信号单独地预失真其输入信号。 在预失真已经稳定之后，其中一个放大器子系统被切换为基于组合的输出信号对其输入信号进行预失真，而另一个放大器子系统仅基于自己的输入单元继续预失真其输入单 输出信号。