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公开(公告)号：US20140204989A1
公开(公告)日：2014-07-24
申请号：US14220364
申请日：2014-03-20
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Stephen L. Dark , Christopher J. Behnke
IPC: H04B17/00
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system.
Abstract translation: 公开了用于测量发射机和/或接收机I / Q损伤的系统和方法，包括使用共享本地振荡器测量发射机I / Q损伤的迭代方法，使用有意偏移的本地振荡器测量发射机I / Q损伤的迭代方法，以及方法 用于测量接收机I / Q损伤。 还公开了用于从采样的复信号计算I / Q损伤的方法，用于计算发射机和接收机之间的信号路径的DC特性的方法，以及通过线性系统变换I / Q损伤的方法。
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公开(公告)号：US10243678B2
公开(公告)日：2019-03-26
申请号：US14328898
申请日：2014-07-11
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Mohamad A. Zeidan , Christopher J. Behnke , Syed Jaffar Shah
IPC: H04B17/00
Abstract: Dynamic characterization of complex high-order nonlinearity in transmitter (TX) and receiver (RX) signal chains of transceiver systems can be efficiently and accurately performed. A loopback connection may be used to facilitate self-characterization. Appropriate RX and TX configuration settings may be developed to facilitate de-coupling of individual RX and TX nonlinearities from measured cascade nonlinearity. The system's high-order response to a two-tone signal generation may be measured, and complex mathematical analysis may be performed to identify and isolate passband nonlinear components to extract a high-order memory-less model for the system. The extracted system model may be used in the corrective and non-iterative pre-distortion of generated signals and in the post-distortion of received signals to improve linearity performance of the transceiver. The memory-less model and the analytical system are effective in improving performance of class-A-amplifier-based signal chains that are common in test and measurement systems and channel emulation systems.
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公开(公告)号：US20140247902A1
公开(公告)日：2014-09-04
申请号：US14198407
申请日：2014-03-05
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Stephen L. Dark , Christopher J. Behnke
IPC: H04B15/00
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Communication devices and associated methods for reducing I/Q impairments in signals used by the communication devices are described. A transmitter device may perform filtering (or matrix multiplication) on digital I and Q signals to pre-correct them before converting them into analog I and Q signals. The pre-correction may pre-compensate for I/Q impairments which have not been introduced yet, but which will subsequently be introduced during digital-to-analog conversion, I/Q modulation, or other processing that occurs to produce a transmission signal from the original digital I and Q signals. A receiver device may receive a transmission signal, produce digital I and Q signals from the received signal, and perform filtering on the digital I and Q signals to correct I/Q impairments at a plurality of frequency offsets.
Abstract translation: 描述用于减少由通信设备使用的信号中的I / Q损伤的通信设备和相关方法。 发射机设备可以对数字I和Q信号执行滤波（或矩阵乘法），以在将它们转换成模拟I和Q信号之前对其进行预校正。 预校正可以预补偿尚未引入的I / Q损伤，但是随后将在数模转换，I / Q调制或其它处理期间引入以产生来自 原来的数字I和Q信号。 接收机设备可以接收传输信号，从接收到的信号产生数字I和Q信号，并对数字I和Q信号进行滤波以校正多个频率偏移处的I / Q损伤。
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公开(公告)号：US20140153664A1
公开(公告)日：2014-06-05
申请号：US14172992
申请日：2014-02-05
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Stephen L. Dark , Christopher J. Behnke
IPC: H04L25/08
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system.
Abstract translation: 公开了用于测量发射机和/或接收机I / Q损伤的系统和方法，包括使用共享本地振荡器测量发射机I / Q损伤的迭代方法，使用有意偏移的本地振荡器测量发射机I / Q损伤的迭代方法，以及方法 用于测量接收机I / Q损伤。 还公开了用于从采样的复信号计算I / Q损伤的方法，用于计算发射机和接收机之间的信号路径的DC特性的方法，以及通过线性系统变换I / Q损伤的方法。
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公开(公告)号：US08938025B2
公开(公告)日：2015-01-20
申请号：US14198407
申请日：2014-03-05
Applicant: National Instruments Corporation
Inventor： Stephen L. Dark , Christopher J. Behnke
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Communication devices and associated methods for reducing I/Q impairments in signals used by the communication devices are described. A transmitter device may perform filtering (or matrix multiplication) on digital I and Q signals to pre-correct them before converting them into analog I and Q signals. The pre-correction may pre-compensate for I/Q impairments which have not been introduced yet, but which will subsequently be introduced during digital-to-analog conversion, I/Q modulation, or other processing that occurs to produce a transmission signal from the original digital I and Q signals. A receiver device may receive a transmission signal, produce digital I and Q signals from the received signal, and perform filtering on the digital I and Q signals to correct I/Q impairments at a plurality of frequency offsets.
Abstract translation: 描述用于减少由通信设备使用的信号中的I / Q损伤的通信设备和相关方法。 发射机设备可以对数字I和Q信号执行滤波（或矩阵乘法），以在将它们转换成模拟I和Q信号之前对其进行预校正。 预校正可以预补偿尚未引入的I / Q损伤，但是随后将在数模转换，I / Q调制或其它处理期间引入以产生来自 原来的数字I和Q信号。 接收机设备可以接收传输信号，从接收到的信号产生数字I和Q信号，并对数字I和Q信号进行滤波以校正多个频率偏移处的I / Q损伤。
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Patent Agency Ranking
公开(公告)号：US08681846B2
公开(公告)日：2014-03-25
申请号：US13887153
申请日：2013-05-03
Applicant: National Instruments Corporation
Inventor： Stephen L. Dark , Christopher J. Behnke
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system.
Abstract translation: 公开了用于测量发射机和/或接收机I / Q损伤的系统和方法，包括使用共享本地振荡器测量发射机I / Q损伤的迭代方法，使用有意偏移的本地振荡器测量发射机I / Q损伤的迭代方法，以及方法 用于测量接收机I / Q损伤。 还公开了用于从采样的复信号计算I / Q损伤的方法，用于计算发射机和接收机之间的信号路径的DC特性的方法，以及通过线性系统变换I / Q损伤的方法。
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公开(公告)号：US08681845B2
公开(公告)日：2014-03-25
申请号：US13887109
申请日：2013-05-03
Applicant: National Instruments Corporation
Inventor： Stephen L. Dark , Christopher J. Behnke
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system.
Abstract translation: 公开了用于测量发射机和/或接收机I / Q损伤的系统和方法，包括使用共享本地振荡器测量发射机I / Q损伤的迭代方法，使用有意偏移的本地振荡器测量发射机I / Q损伤的迭代方法，以及方法 用于测量接收机I / Q损伤。 还公开了用于从采样的复信号计算I / Q损伤的方法，用于计算发射机和接收机之间的信号路径的DC特性的方法，以及通过线性系统变换I / Q损伤的方法。
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公开(公告)号：US20130243060A1
公开(公告)日：2013-09-19
申请号：US13887153
申请日：2013-05-03
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Stephen L. Dark , Christopher J. Behnke
IPC: H04L1/24
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system.
Abstract translation: 公开了用于测量发射机和/或接收机I / Q损伤的系统和方法，包括使用共享本地振荡器测量发射机I / Q损伤的迭代方法，使用有意偏移的本地振荡器测量发射机I / Q损伤的迭代方法，以及方法 用于测量接收机I / Q损伤。 还公开了用于从采样的复信号计算I / Q损伤的方法，用于计算发射机和接收机之间的信号路径的DC特性的方法，以及通过线性系统变换I / Q损伤的方法。
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公开(公告)号：US20130243059A1
公开(公告)日：2013-09-19
申请号：US13887109
申请日：2013-05-03
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Stephen L. Dark , Christopher J. Behnke
IPC: H04B17/00
CPC classification number: H04B17/11 , H04B15/00 , H04B17/21 , H04B17/309 , H04B17/391 , H04L1/248 , H04L25/08
Abstract: Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system.
Abstract translation: 公开了用于测量发射机和/或接收机I / Q损伤的系统和方法，包括使用共享本地振荡器测量发射机I / Q损伤的迭代方法，使用有意偏移的本地振荡器测量发射机I / Q损伤的迭代方法，以及方法 用于测量接收机I / Q损伤。 还公开了用于从采样的复信号计算I / Q损伤的方法，用于计算发射机和接收机之间的信号路径的DC特性的方法，以及通过线性系统变换I / Q损伤的方法。
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10.发明申请Linearization of Radio Frequency Transceivers and Test Systems Through Dynamic Extraction of Complex Nonlinear Models Thereof 审中-公开通过动态提取复杂非线性模型对射频收发器和测试系统进行线性化公开(公告)号：US20150118971A1
公开(公告)日：2015-04-30
申请号：US14328898
申请日：2014-07-11
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Mohamad A. Zeidan , Christopher J. Behnke , Syed Jaffar Shah
IPC: H04W24/06
CPC classification number: H04B17/0087
Abstract: Dynamic characterization of complex high-order nonlinearity in transmitter (TX) and receiver (RX) signal chains of transceiver systems can be efficiently and accurately performed. A loopback connection may be used to facilitate self-characterization. Appropriate RX and TX configuration settings may be developed to facilitate de-coupling of individual RX and TX nonlinearities from measured cascade nonlinearity. The system's high-order response to a two-tone signal generation may be measured, and complex mathematical analysis may be performed to identify and isolate passband nonlinear components to extract a high-order memory-less model for the system. The extracted system model may be used in the corrective and non-iterative pre-distortion of generated signals and in the post-distortion of received signals to improve linearity performance of the transceiver. The memory-less model and the analytical system are effective in improving performance of class-A-amplifier-based signal chains that are common in test and measurement systems and channel emulation systems.
Abstract translation: 收发器系统发射机（TX）和接收机（RX）信号链中复杂高阶非线性的动态特性可以被有效和准确地执行。 可以使用环回连接来促进自我表征。 可以开发适当的RX和TX配置设置，以便于单独的RX和TX非线性与测量级联非线性的去耦合。 可以测量系统对双音信号产生的高阶响应，并且可以执行复杂的数学分析以识别和隔离通带非线性分量以提取用于系统的高阶无内存模型。 提取的系统模型可以用于生成的信号的校正和非迭代预失真以及接收信号的后失真以提高收发器的线性性能。 无记忆模型和分析系统在提高测试和测量系统和通道仿真系统中常见的基于A类放大器的信号链的性能方面是有效的。
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