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1. 发明申请

US20150085748A1 SYSTEM AND METHOD FOR CONTROLLING PEAK TO AVERAGE POWER RATIO 有权
标题翻译：用于控制峰值以平均功率比的系统和方法
公开(公告)号：US20150085748A1
公开(公告)日：2015-03-26
申请号：US14492839
申请日：2014-09-22
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Lars Jorgensen , Zigang Yang , Hardik Prakash Gandhi
IPC分类号： H04W52/24 , H04L27/08 , H04L1/00
CPC分类号： H04L27/08 , H03F1/3241 , H03F3/245 , H03F2200/435 , H04L1/0041 , H04L1/0045 , H04L27/3411 , H04W52/04 , H04W52/52
摘要： A system and method for reducing peak to average power ratio in a wireless communication system. A wireless communication system includes a radio frequency wireless transmitter that includes signal peak reduction circuitry configured to reduce peak to average power ratio of a signal to be transmitted by reducing amplitude of the signal to be transmitted that is greater than a predetermined amplitude. The signal peak reduction circuitry includes a bit inverter configured to invert a bit of a symbol identified as causing the amplitude of the signal to exceed the predetermined amplitude. The bit inverter is also configured to select the bit to invert such that inversion of the bit reduces the amplitude of the signal, and such that forward error correction in a receiver wirelessly coupled to the transmitter restores the bit to a pre-inversion value.
摘要翻译：一种用于在无线通信系统中降低峰均功率比的系统和方法。无线通信系统包括射频无线发射机，其包括信号峰值降低电路，该信号峰值降低电路经配置以通过减小待发射的信号的幅度大于预定幅度来降低要发射的信号的峰均功率比。信号峰值降低电路包括位反相器，其被配置为反转被识别为导致信号的幅度超过预定幅度的符号的位。位反相器还被配置为选择该位以反转，使得该位的反相减小信号的幅度，并且使得无线耦合到发射机的接收机中的前向纠错将该位恢复为预反转值。

2. 发明申请

US20130083834A1 Power-Indexed Look-Up Table Design of Digital Pre-Distortion for Power Amplifiers with Dynamic Nonlinearities 有权
标题翻译：具有动态非线性功率放大器的数字预失真的功率索引查找表设计
公开(公告)号：US20130083834A1
公开(公告)日：2013-04-04
申请号：US13644942
申请日：2012-10-04
申请人： Texas Instruments Incorporated
发明人： Jie Yang , Zigang Yang , Hardik Prakash Gandhi , Lars Jorgensen
IPC分类号： H04B15/00 , H04B17/00
CPC分类号： H04B17/001 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H03F3/189 , H03F3/245 , H03F2200/78 , H04B17/13 , H04B2001/0425 , H04L25/03343 , H04W52/226
摘要： This invention is a method of power amplifier digital pre-distortion which measures a current power level of the power amplifier, stores in a look up table entries consisting of a power level and a corresponding set of digital pre-distortion coefficients, selects a set of digital pre-distortion coefficients corresponding to the measured power level. If the measured current power level is near a power level index, the digital pre-distortion coefficients correspond to the power level index. If the measured current power level is greater than the maximum power level entry, the digital pre-distortion coefficients is of the maximum power level entry. If the measured current power level is less than the minimum power level entry, the digital pre-distortion is of the minimum power level entry. If the measured current power level is not near a power level index, the digital pre-distortion coefficients are an interpolation.
摘要翻译：本发明是功率放大器数字预失真的方法，其测量功率放大器的当前功率电平，存储在由功率电平和相应的数字预失真系数集合组成的查找表条目中，选择一组对应于测量的功率电平的数字预失真系数。如果测量的当前功率电平接近功率电平指数，则数字预失真系数对应于功率电平指数。如果测量的当前功率电平大于最大功率电平输入，则数字预失真系数是最大功率电平输入。如果测量的当前功率电平小于最小功率电平输入，则数字预失真是最小功率电平输入。如果测量的当前功率电平不接近功率电平指数，则数字预失真系数是内插。

3. 发明授权

US09001928B2 Transmitter first/second digital predistortion and first/second adaption circuitry with feedback 有权
标题翻译：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
申请人： Texas Instruments Incorporated
发明人： Hardik Prakash Gandhi , Zigang Yang , Xiaohan Chen , Raul Blazquez , Lars Jorgensen , Hongzhi Zhao , Jie Yang
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H03F1/32
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0288 , H03F1/3241 , H03F3/24 , H04B2001/0416 , H04B2001/045 , H04L27/2614
摘要： 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).
摘要翻译：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）。

4. 发明授权

US08891675B2 Power-indexed look-up table design of digital pre-distortion for power amplifiers with dynamic nonlinearities 有权
标题翻译：具有动态非线性功率放大器的数字预失真功率索引查找表设计
公开(公告)号：US08891675B2
公开(公告)日：2014-11-18
申请号：US13644942
申请日：2012-10-04
申请人： Texas Instruments Incorporated
发明人： Jie Yang , Zigang Yang , Hardik Prakash Gandhi , Lars Jorgensen
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H03F3/24 , H03F3/189 , H04B17/00 , H04W52/22 , H03F1/32 , H04B1/04
CPC分类号： H04B17/001 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H03F3/189 , H03F3/245 , H03F2200/78 , H04B17/13 , H04B2001/0425 , H04L25/03343 , H04W52/226
摘要： This invention is a method of power amplifier digital pre-distortion which measures a current power level of the power amplifier, stores in a look up table entries consisting of a power level and a corresponding set of digital pre-distortion coefficients, selects a set of digital pre-distortion coefficients corresponding to the measured power level. If the measured current power level is near a power level index, the digital pre-distortion coefficients correspond to the power level index. If the measured current power level is greater than the maximum power level entry, the digital pre-distortion coefficients is of the maximum power level entry. If the measured current power level is less than the minimum power level entry, the digital pre-distortion is of the minimum power level entry. If the measured current power level is not near a power level index, the digital pre-distortion coefficients are an interpolation.
摘要翻译：本发明是功率放大器数字预失真的方法，其测量功率放大器的当前功率电平，存储在由功率电平和相应的数字预失真系数集合组成的查找表条目中，选择一组对应于测量的功率电平的数字预失真系数。如果测量的当前功率电平接近功率电平指数，则数字预失真系数对应于功率电平指数。如果测量的当前功率电平大于最大功率电平输入，则数字预失真系数是最大功率电平输入。如果测量的当前功率电平小于最小功率电平输入，则数字预失真是最小功率电平输入。如果测量的当前功率电平不接近功率电平指数，则数字预失真系数是内插。

5. 发明授权

US08971464B2 Crest factor reduction for signals with dynamic power and frequency distribution 有权
标题翻译：具有动态功率和频率分布的信号的波峰因数降低
公开(公告)号：US08971464B2
公开(公告)日：2015-03-03
申请号：US13683019
申请日：2012-11-21
申请人： Texas Instruments Incorporated
发明人： Hardik Prakash Gandhi , Zigang Yang , Lars Jorgensen , Prasad Chivakula
IPC分类号： H03D1/04 , H04B1/04 , H04L27/26
CPC分类号： H04B1/0475 , H03F1/3241 , H04B2001/0425 , H04L27/26 , H04L27/2624
摘要： A method to form a CFR cancellation filter for signals with dynamic power and frequency distribution by estimating the filter at the rate required by the input signal's dynamics. For mixed mode systems (for example CDMA and LTE) the CFR is computed for each stream, and combined to form the final filter.
摘要翻译：通过以输入信号动态所需的速率估计滤波器，形成具有动态功率和频率分布的信号的CFR消除滤波器的方法。对于混合模式系统（例如CDMA和LTE），为每个流计算CFR，并组合以形成最终滤波器。

6. 发明授权

US09124324B2 Dual loop digital predistortion for power amplifiers 有权
标题翻译：功率放大器的双回路数字预失真
公开(公告)号：US09124324B2
公开(公告)日：2015-09-01
申请号：US14679603
申请日：2015-04-06
申请人： Texas Instruments Incorporated
发明人： Hardik Prakash Gandhi , Zigang Yang , Xiaohan Chen , Raul Blazquez , Lars Jorgensen , Hongzhi Zhao , Jie Yang
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H04B1/04 , H04L27/26
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0288 , H03F1/3241 , H03F3/24 , H04B2001/0416 , H04B2001/045 , H04L27/2614
摘要： 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).
摘要翻译：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）。

7. 发明授权

US10015028B2 System and method for controlling peak to average power ratio 有权
公开(公告)号：US10015028B2
公开(公告)日：2018-07-03
申请号：US14492839
申请日：2014-09-22
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Lars Jorgensen , Zigang Yang , Hardik Prakash Gandhi
IPC分类号： H04W4/00 , H04L27/08 , H04L1/00 , H03F1/32 , H03F3/24 , H04L27/34 , H04W52/52 , H04W52/04
CPC分类号： H04L27/08 , H03F1/3241 , H03F3/245 , H03F2200/435 , H04L1/0041 , H04L1/0045 , H04L27/3411 , H04W52/04 , H04W52/52
摘要： A system and method for reducing peak to average power ratio in a wireless communication system. A wireless communication system includes a radio frequency wireless transmitter that includes signal peak reduction circuitry configured to reduce peak to average power ratio of a signal to be transmitted by reducing amplitude of the signal to be transmitted that is greater than a predetermined amplitude. The signal peak reduction circuitry includes a bit inverter configured to invert a bit of a symbol identified as causing the amplitude of the signal to exceed the predetermined amplitude. The bit inverter is also configured to select the bit to invert such that inversion of the bit reduces the amplitude of the signal, and such that forward error correction in a receiver wirelessly coupled to the transmitter restores the bit to a pre-inversion value.

8. 发明授权

US09374112B2 Capture selection for digital pre-distortion adaptation and capture concatenation for frequency hopping pre-distortion adaptation 有权
标题翻译：捕获选择数字预失真适应和捕获级联跳频预失真适应
公开(公告)号：US09374112B2
公开(公告)日：2016-06-21
申请号：US14475552
申请日：2014-09-02
申请人： Texas Instruments Incorporated
发明人： Zigang Yang , Raul Blazquez , Hardik Prakash Gandhi , Xiaohan Chen , Lars Jorgensen
IPC分类号： H04L25/49 , H04B1/04 , H04W88/08
CPC分类号： H04B1/0475 , H03F1/3241 , H04B2001/0425 , H04W88/08
摘要： A digital pre-distortion component includes: a first capturing component that captures a first sample set of data; a first generating component that generates a first change matrix associated with a portion of the first sample set of data; a first memory component that stores the first change matrix; a second capturing component that captures a second sample set of data; a second generating component that generates a second change matrix associated with a portion of the second sample set of data; a second memory component that stores the second change matrix; a third capturing component that captures a third sample set of data; a third generating component that generates a third change matrix associated with a portion of the third sample set of data; a comparing component that compares the third change matrix with the first change matrix to obtain a first comparison, and compares the third change matrix with the second change matrix to obtain a second comparison; and an adapting component that adapts the digital pre-distortion component with the third sample set of data based on one of the first comparison and the second comparison.
摘要翻译：数字预失真部件包括：第一捕获部件，其捕获第一采样数据集; 第一生成组件，其生成与所述第一样本数据集合的一部分相关联的第一改变矩阵; 存储所述第一改变矩阵的第一存储器组件; 捕获第二样本数据集合的第二捕获组件; 第二生成组件，其生成与所述第二样本数据集合的一部分相关联的第二改变矩阵; 存储所述第二改变矩阵的第二存储器组件; 捕获第三样本数据集合的第三捕获组件; 第三生成组件，其生成与所述第三样本数据集的一部分相关联的第三变化矩阵; 将所述第三变化矩阵与所述第一变化矩阵进行比较以获得第一比较的比较部，将所述第三变化矩阵与所述第二变化矩阵进行比较，得到第二比较; 以及适配部件，其基于第一比较和第二比较中的一个来适配数字预失真分量与第三样本数据集合。

9. 发明申请

US20160065249A1 CAPTURE SELECTION FOR DIGITAL PRE-DISTORTION ADAPTATION AND CAPTURE CONCATENATION FOR FREQUENCY HOPPING PRE-DISTORTION ADAPTATION 有权
标题翻译：用于频率预失真适应的数字预失真适应和捕获定位的捕获选择
公开(公告)号：US20160065249A1
公开(公告)日：2016-03-03
申请号：US14475552
申请日：2014-09-02
申请人： Texas Instruments Incorporated
发明人： Zigang Yang , Raul Blazquez , Hardik Prakash Gandhi , Xiaohan Chen , Lars Jorgensen
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H04B2001/0425 , H04W88/08
摘要： A digital pre-distortion component includes: a first capturing component that captures a first sample set of data; a first generating component that generates a first change matrix associated with a portion of the first sample set of data; a first memory component that stores the first change matrix; a second capturing component that captures a second sample set of data; a second generating component that generates a second change matrix associated with a portion of the second sample set of data; a second memory component that stores the second change matrix; a third capturing component that captures a third sample set of data; a third generating component that generates a third change matrix associated with a portion of the third sample set of data; a comparing component that compares the third change matrix with the first change matrix to obtain a first comparison, and compares the third change matrix with the second change matrix to obtain a second comparison; and an adapting component that adapts the digital pre-distortion component with the third sample set of data based on one of the first comparison and the second comparison.
摘要翻译：数字预失真部件包括：第一捕获部件，其捕获第一采样数据集; 第一生成组件，其生成与所述第一样本数据集合的一部分相关联的第一改变矩阵; 存储所述第一改变矩阵的第一存储器组件; 捕获第二样本数据集合的第二捕获组件; 第二生成组件，其生成与所述第二样本数据集合的一部分相关联的第二改变矩阵; 存储所述第二改变矩阵的第二存储器组件; 捕获第三样本数据集合的第三捕获组件; 第三生成组件，其生成与所述第三样本数据集的一部分相关联的第三变化矩阵; 将所述第三变化矩阵与所述第一变化矩阵进行比较以获得第一比较的比较部，将所述第三变化矩阵与所述第二变化矩阵进行比较，得到第二比较; 以及适配部件，其基于第一比较和第二比较中的一个来适配数字预失真分量与第三样本数据集合。

10. 发明申请

US20150214988A1 DUAL LOOP DIGITAL PREDISTORTION FOR POWER AMPLIFIERS 审中-公开
标题翻译：功率放大器的双环数字预测
公开(公告)号：US20150214988A1
公开(公告)日：2015-07-30
申请号：US14679603
申请日：2015-04-06
申请人： Texas Instruments Incorporated
发明人： Hardik Prakash Gandhi , Zigang Yang , Xiaohan Chen , Raul Blazquez , Lars Jorgensen , Hongzhi Zhao , Jie Yang
IPC分类号： H04B1/04 , H04L27/26
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0288 , H03F1/3241 , H03F3/24 , H04B2001/0416 , H04B2001/045 , H04L27/2614
摘要： 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).
摘要翻译：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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