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1.发明授权公开(公告)号：US10447244B1
公开(公告)日：2019-10-15
申请号：US16376239
申请日：2019-04-05
Applicant: QUALCOMM Incorporated
Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for configuring components of transmission circuitry. In one aspect, a first set of linear kernels and a first set of nonlinear kernels associated with a composite digital pre-distortion (DPD) kernel design is determined based on a first iteration of a DPD kernel analysis process. The first set of linear kernels is separated from the first set of nonlinear kernels according to a first iteration of a linear filter separation process. A final set of linear kernels and a final set of nonlinear kernels are determined based on one or more additional iterations of the DPD kernel analysis process and the linear filter separation process. A pre-DPD filter for the transmission circuitry is configured using a final set of filter coefficients derived based on the final set of linear kernels.
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2.发明申请QUANTITATIVE CHARACTERIZATION OF NONLINEARITY AND MEMORY EFFECT IN NONLINEAR CIRCUITS 审中-公开非线性电路中非线性和记忆效应的量化特征公开(公告)号：US20150160279A1
公开(公告)日：2015-06-11
申请号：US14564071
申请日：2014-12-08
Applicant: QUALCOMM Incorporated
Inventor： Hao Zhou , Feipeng Wang , Haojen Cheng , Volodymyr Rakytyanskyy
CPC classification number: G01R29/26 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2201/3209 , H03F2201/3224 , H03F2201/3233
Abstract: An input signal is transmitted to a component. A distortion associated with the component is determined based, at least in part, on an output signal generated by the component in response to the input signal. A distortion error measurement associated with the component is determined based, at least in part, on the distortion and the output signal generated by the component. A memory effect and the associated nonlinearity within the component are quantified based, at least in part, on the distortion error measurement.
Abstract translation: 输入信号被发送到组件。 至少部分地基于由该组件响应输入信号产生的输出信号来确定与该组件相关联的失真。 至少部分地基于由该部件产生的失真和输出信号确定与该部件相关联的失真误差测量。 至少部分地基于失真误差测量量化部件内的记忆效应和相关联的非线性。
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公开(公告)号：US20140254716A1
公开(公告)日：2014-09-11
申请号：US13786406
申请日：2013-03-05
Applicant: QUALCOMM INCORPORATED
Inventor： Hao Zhou , Ning Zhang
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H04B2001/0425
Abstract: A power amplifier system including a composite digital predistorter (DPD) ensuring optimized linearity for the power amplifier is described. In this system, a digital-to-analog converter (DAC), an analog filter, a first mixer, and the power amplifier are serially coupled to the composite DPD. A second mixer, a receive gain block, and an analog-to-digital converter (ADC) are serially coupled to the output of the power amplifier. A DPD training component is coupled between the inputs of the composite DPD and the ADC. The composite DPD includes a memory-based DPD, e.g., a memory polynomial (MP) DPD, a memoryless-linearizing DPD, e.g., a look-up table (LUT) DPD, and two multiplexers.
Abstract translation: 描述了一种包括确保功率放大器的优化线性度的复合数字预失真器（DPD）的功率放大器系统。 在该系统中，数模转换器（DAC），模拟滤波器，第一混频器和功率放大器串联耦合到复合DPD。 第二混频器，接收增益模块和模数转换器（ADC）串联耦合到功率放大器的输出端。 DPD训练组件耦合在复合DPD和ADC的输入之间。 复合DPD包括基于存储器的DPD，例如存储器多项式（MP）DPD，无记忆线性化DPD，例如查找表（LUT）DPD和两个多路复用器。
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公开(公告)号：US20200244509A1
公开(公告)日：2020-07-30
申请号：US16259924
申请日：2019-01-28
Applicant: QUALCOMM Incorporated
Inventor： Hao Zhou , Kapil Rai , James Gardner , Manyuan Shen , Zhiqun Liu
Abstract: Methods, systems, and devices for wireless communications are described. A device may receive a signal, such as a wideband or narrowband signal, and determine an in-phase and quadrature-phase imbalance of the signal, a phase and amplitude of the signal, a conjugate of the signal, or any combination thereof. Based on the in-phase and quadrature-phase imbalance, the device may determine a kernel set having a set of in-phase and quadrature-phase imbalance correction terms and select an in-phase and quadrature-phase imbalance correction term from the set based on a selection criteria. The device may then apply the in-phase and quadrature-phase imbalance correction term to the signal.
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Patent Agency Ranking
公开(公告)号：US08989307B2
公开(公告)日：2015-03-24
申请号：US13786406
申请日：2013-03-05
Applicant: QUALCOMM Incorporated
Inventor： Hao Zhou , Ning Zhang
CPC classification number: H04B1/0475 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H04B2001/0425
Abstract: A power amplifier system including a composite digital predistorter (DPD) ensuring optimized linearity for the power amplifier is described. In this system, a digital-to-analog converter (DAC), an analog filter, a first mixer, and the power amplifier are serially coupled to the composite DPD. A second mixer, a receive gain block, and an analog-to-digital converter (ADC) are serially coupled to the output of the power amplifier. A DPD training component is coupled between the inputs of the composite DPD and the ADC. The composite DPD includes a memory-based DPD, e.g., a memory polynomial (MP) DPD, a memoryless-linearizing DPD, e.g., a look-up table (LUT) DPD, and two multiplexers.
Abstract translation: 描述了一种包括确保功率放大器的优化线性度的复合数字预失真器（DPD）的功率放大器系统。 在该系统中，数模转换器（DAC），模拟滤波器，第一混频器和功率放大器串联耦合到复合DPD。 第二混频器，接收增益模块和模数转换器（ADC）串联耦合到功率放大器的输出端。 DPD训练组件耦合在复合DPD和ADC的输入之间。 复合DPD包括基于存储器的DPD，例如存储器多项式（MP）DPD，无记忆线性化DPD，例如查找表（LUT）DPD和两个多路复用器。
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公开(公告)号：US08953711B2
公开(公告)日：2015-02-10
申请号：US13909478
申请日：2013-06-04
Applicant: QUALCOMM Incorporated
Inventor： Haojen Cheng , Chiao Cheng Huang , Hao Zhou
CPC classification number: H04L27/368 , H03F1/3247
Abstract: 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.
Abstract translation: 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。 频率响应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。 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。
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公开(公告)号：US20140355714A1
公开(公告)日：2014-12-04
申请号：US13909478
申请日：2013-06-04
Applicant: QUALCOMM Incorporated
Inventor： Hao-Jen Cheng , Chiao-Cheng Huang , Hao Zhou
CPC classification number: H04L27/368 , H03F1/3247
Abstract: 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.
Abstract translation: 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。
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8.发明申请公开(公告)号：US20140028499A1
公开(公告)日：2014-01-30
申请号：US13740085
申请日：2013-01-11
Applicant: Qualcomm Incorporated
Inventor： Wen-Chang Yeh , Hao Zhou , Qinfang Sun
IPC: G01S19/33
CPC classification number: G01S19/33 , G01S19/235 , G01S19/36 , G01S19/37
Abstract: A receiver for receiving both GPS signals and GLONASS signals is provided. This receiver includes an analog front end (AFE), a GPS digital front end (DFE) and a GLONASS DFE for receiving an output of the AFE, and a dual mode interface (DMI) for receiving outputs of the GPS and GLONASS DFEs. Search engines are provided for receiving outputs of the DMI. Notably, certain front-end components of the AFE are configured to process both the GPS signals and the GLONASS signals.
Abstract translation: 提供了用于接收GPS信号和GLONASS信号的接收器。 该接收机包括用于接收AFE的输出的模拟前端（AFE），GPS数字前端（DFE）和GLONASS DFE，以及用于接收GPS和GLONASS DFE的输出的双模式接口（DMI）。 提供搜索引擎用于接收DMI的输出。 值得注意的是，AFE的某些前端组件配置为处理GPS信号和GLONASS信号。
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公开(公告)号：US20150280657A1
公开(公告)日：2015-10-01
申请号：US14316296
申请日：2014-06-26
Applicant: QUALCOMM Incorporated
Inventor： Haojen Cheng , Hao Zhou , Chiao-Cheng Huang
CPC classification number: H03F1/3241 , H03F2201/3215 , H03F2201/3233 , H04B1/0475 , H04B2001/0425 , H04L25/03343 , H04L27/368
Abstract: Methods, systems, and devices are described for adaptive digital pre-distortion (DPD). A wireless device may identify a transmission parameter, such as data rate or transmission power, for a signal to be transmitted by a wireless modem. The wireless device may then select a power amplification response based on whether the transmission parameter exceeds a threshold. A non-linear power amplification response may be selected in cases when the data rate is low or the transmission power is high. A linear power amplification response may be selected when the data rate is high or the transmission power is low. The power amplification response may be achieved by digital distortion of the signal prior to power amplification, so selection of the response may involve adjusting a DPD compensation circuit. In some cases, the output for the non-linear response may be characterized by a Rapp model.
Abstract translation: 描述了用于自适应数字预失真（DPD）的方法，系统和设备。 无线设备可以识别要由无线调制解调器发送的信号的传输参数，例如数据速率或传输功率。 然后，无线设备可以基于传输参数是否超过阈值来选择功率放大响应。 在数据速率低或发送功率高的情况下，可以选择非线性功率放大响应。 当数据速率高或发送功率低时，可以选择线性功率放大响应。 功率放大响应可以通过功率放大之前的信号的数字失真来实现，因此响应的选择可以涉及调整DPD补偿电路。 在某些情况下，非线性响应的输出可以由Rapp模型表征。
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