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1.发明申请subtracting linear impairments for non-linear impairment digital pre-distortion error signal 有权减去非线性损伤数字预失真误差信号的线性损伤公开(公告)号：US20150236730A1
公开(公告)日：2015-08-20
申请号：US14185888
申请日：2014-02-20
Applicant: Texas Instruments Incorporated
Inventor： Hongzhi Zhao , Xiaohan Chen , Zigang Yang
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/3241 , H04B2001/0425
Abstract: Example embodiment of the systems and methods of linear impairment modeling to improve digital pre-distortion adaptation performance includes a DPD module that is modified during each sample by a DPD adaptation engine. A linear impairment modeling module separates the linear and non-linear errors introduced in the power amplifier. The linear impairment model is adjusted during each sample using inputs from the input signal and from a FB post processing module. The linear impairment modeling module removes the linear errors such that the DPD adaptation engine only adapts the DPD module based on the non-linear errors. This increases system stability and allows for the correction of IQ imbalance inside the linear impairment modeling, simplifying the feedback post-processing.
Abstract translation: 用于改善数字预失真适应性能的线性损伤建模的系统和方法的示例性实施例包括在DPD适配引擎的每个采样期间修改的DPD模块。 线性损伤建模模块分离功率放大器中引入的线性和非线性误差。 在每个采样中使用输入信号和FB后处理模块的输入调整线性损伤模型。 线性损伤建模模块消除线性误差，使得DPD自适应引擎仅基于非线性误差来适应DPD模块。 这增加了系统稳定性，并允许在线性损伤建模中对IQ不平衡进行校正，从而简化了反馈后处理。
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2.发明授权Transmitter first/second digital predistortion and first/second adaption circuitry with feedback 有权发射机第一/第二数字预失真和具有反馈的第一/第二适配电路公开(公告)号：US09001928B2
公开(公告)日：2015-04-07
申请号：US13852333
申请日：2013-03-28
Applicant: Texas Instruments Incorporated
Inventor： Hardik Prakash Gandhi , Zigang Yang , Xiaohan Chen , Raul Blazquez , Lars Jorgensen , Hongzhi Zhao , Jie Yang
CPC classification number: H04B1/0475 , H03F1/02 , H03F1/0288 , H03F1/3241 , H03F3/24 , H04B2001/0416 , H04B2001/045 , H04L27/2614
Abstract: A method of predistorting an input signal (902) for an amplifier is disclosed (FIG. 9). The method includes predistorting the input signal with a first set of parameters (FDPD) and a second set of parameters (CDPD) at a first time (904). The first set of parameters is updated at a second time (914). The second set of parameters is updated separately from the first set of parameters at a third time (920).
Abstract translation: 公开了一种用于放大器的输入信号（902）的预失真的方法（图9）。 该方法包括在第一时间（904）用第一组参数（FDPD）和第二组参数（CDPD）预失真输入信号。 第一组参数第二次更新（914）。 第二组参数在第三时间与第一组参数分开更新（920）。
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Patent Agency Ranking
公开(公告)号：US09124324B2
公开(公告)日：2015-09-01
申请号：US14679603
申请日：2015-04-06
Applicant: Texas Instruments Incorporated
Inventor： Hardik Prakash Gandhi , Zigang Yang , Xiaohan Chen , Raul Blazquez , Lars Jorgensen , Hongzhi Zhao , Jie Yang
CPC classification number: H04B1/0475 , H03F1/02 , H03F1/0288 , H03F1/3241 , H03F3/24 , H04B2001/0416 , H04B2001/045 , H04L27/2614
Abstract: A method of predistorting an input signal (902) for an amplifier is disclosed (FIG. 9). The method includes predistorting the input signal with a first set of parameters (FDPD) and a second set of parameters (CDPD) at a first time (904). The first set of parameters is updated at a second time (914). The second set of parameters is updated separately from the first set of parameters at a third time (920).
Abstract translation: 公开了一种用于放大器的输入信号（902）的预失真的方法（图9）。 该方法包括在第一时间（904）用第一组参数（FDPD）和第二组参数（CDPD）预失真输入信号。 第一组参数第二次更新（914）。 第二组参数在第三时间与第一组参数分开更新（920）。
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4.发明授权Subtracting linear impairments for non-linear impairment digital pre-distortion error signal 有权减去非线性损伤数字预失真误差信号的线性损伤公开(公告)号：US09136887B2
公开(公告)日：2015-09-15
申请号：US14185888
申请日：2014-02-20
Applicant: Texas Instruments Incorporated
Inventor： Hongzhi Zhao , Xiaohan Chen , Zigang Yang
CPC classification number: H04B1/0475 , H03F1/3241 , H04B2001/0425
Abstract: Example embodiment of the systems and methods of linear impairment modeling to improve digital pre-distortion adaptation performance includes a DPD module that is modified during each sample by a DPD adaptation engine. A linear impairment modeling module separates the linear and non-linear errors introduced in the power amplifier. The linear impairment model is adjusted during each sample using inputs from the input signal and from a FB post processing module. The linear impairment modeling module removes the linear errors such that the DPD adaptation engine only adapts the DPD module based on the non-linear errors. This increases system stability and allows for the correction of IQ imbalance inside the linear impairment modeling, simplifying the feedback post-processing.
Abstract translation: 用于改善数字预失真适应性能的线性损伤建模的系统和方法的示例性实施例包括在DPD适配引擎的每个采样期间修改的DPD模块。 线性损伤建模模块分离功率放大器中引入的线性和非线性误差。 在每个采样中使用输入信号和FB后处理模块的输入调整线性损伤模型。 线性损伤建模模块消除线性误差，使得DPD自适应引擎仅基于非线性误差来适应DPD模块。 这增加了系统稳定性，并允许在线性损伤建模中对IQ不平衡进行校正，从而简化了反馈后处理。
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公开(公告)号：US20150214988A1
公开(公告)日：2015-07-30
申请号：US14679603
申请日：2015-04-06
Applicant: Texas Instruments Incorporated
Inventor： Hardik Prakash Gandhi , Zigang Yang , Xiaohan Chen , Raul Blazquez , Lars Jorgensen , Hongzhi Zhao , Jie Yang
CPC classification number: H04B1/0475 , H03F1/02 , H03F1/0288 , H03F1/3241 , H03F3/24 , H04B2001/0416 , H04B2001/045 , H04L27/2614
Abstract: A method of predistorting an input signal (902) for an amplifier is disclosed (FIG. 9). The method includes predistorting the input signal with a first set of parameters (FDPD) and a second set of parameters (CDPD) at a first time (904). The first set of parameters is updated at a second time (914). The second set of parameters is updated separately from the first set of parameters at a third time (920).
Abstract translation: 公开了一种用于放大器的输入信号（902）的预失真的方法（图9）。 该方法包括在第一时间（904）用第一组参数（FDPD）和第二组参数（CDPD）预失真输入信号。 第一组参数第二次更新（914）。 第二组参数在第三时间与第一组参数分开更新（920）。
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6.发明授权公开(公告)号：US08804872B1
公开(公告)日：2014-08-12
申请号：US13752577
申请日：2013-01-29
Applicant: Texas Instruments Incorporated
Inventor： Hongzhi Zhao , Xiaohan Chen , Xing Zhao , David L. Brubaker
CPC classification number: H04L27/368
Abstract: A method of dynamically calculating and updating the Volterra kernels used by the Digital Pre Distortion engine based on output power, input signal bandwidth, multicarrier configuration, frequency response and power amplifier temperature. A dominant Volterra kernels searching DSP engine based on innovation bases with minimum RMS error selection is implemented to continuously update the Volterra kernels set used in DPD to model the power amplifier non linear behaviors.
Abstract translation: 一种基于输出功率，输入信号带宽，多载波配置，频率响应和功率放大器温度动态计算和更新数字预失真引擎使用的Volterra内核的方法。 基于具有最小RMS误差选择的创新基础的主导Volterra内核搜索DSP引擎实现了持续更新DPD中使用的Volterra内核集，以对功率放大器的非线性行为进行建模。
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7.发明申请公开(公告)号：US20140211882A1
公开(公告)日：2014-07-31
申请号：US13752577
申请日：2013-01-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Hongzhi Zhao , Xiaohan Chen , Xing Zhao , David L. Brubaker
IPC: H04L27/36
CPC classification number: H04L27/368
Abstract: A method of dynamically calculating and updating the Volterra kernels used by the Digital Pre Distortion engine based on output power, input signal bandwidth, multicarrier configuration, frequency response and power amplifier temperature. A dominant Volterra kernels searching DSP engine based on innovation bases with minimum RMS error selection is implemented to continuously update the Volterra kernels set used in DPD to model the power amplifier non linear behaviours.
Abstract translation: 一种基于输出功率，输入信号带宽，多载波配置，频率响应和功率放大器温度动态计算和更新数字预失真引擎使用的Volterra内核的方法。 基于具有最小RMS误差选择的创新基础的主导Volterra内核搜索DSP引擎实现了持续更新DPD中使用的Volterra内核集，以对功率放大器的非线性行为进行建模。
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