公开(公告)号：US20100316164A1

公开(公告)日：2010-12-16

申请号：US12482913

申请日：2009-06-11

申请人： Paul Cheng-Po Liang ,  Hua Wang ,  Kenichi Mori

发明人： Paul Cheng-Po Liang ,  Hua Wang ,  Kenichi Mori

IPC分类号： H04L27/36 ,  H04L27/00

CPC分类号： H04L27/363 ,  H03F1/3241 ,  H03F3/24 ,  H04L27/361

摘要： A baseband circuit for a communications transmitter includes a baseband modulator, a pulse-shaping filter, and an AMPR reduction circuit. The baseband modulator is configured to generate a sequence of symbols formatted in accordance with a non-constant envelope modulation scheme. The pulse-shaping filter is configured to band-limit the sequence of samples to provide a sequence of samples. The AMPR reduction circuit is configured to analyze and modify one or more samples in the sequence of samples, if a sample in the sequence of samples that has been previously analyzed by the AMPR reduction circuit is determined to have a magnitude less than a predetermined low-magnitude threshold.

摘要翻译： 用于通信发射机的基带电路包括基带​​调制器，脉冲整形滤波器和AMPR降低电路。 基带调制器被配置为生成根据非恒定包络调制方案格式化的符号序列。 脉冲整形滤波器被配置为限制样本序列以提供样本序列。 AMPR降低电路被配置为分析和修改样本序列中的一个或多个样本，如果已经由AMPR降低电路先前分析的样本序列中的样本被确定为具有小于预定低通滤波器的幅度， 幅度阈值。

公开(公告)号：US08385464B2

公开(公告)日：2013-02-26

申请号：US12482913

申请日：2009-06-11

申请人： Paul Cheng-Po Liang ,  Hua Wang ,  Kenichi Mori

发明人： Paul Cheng-Po Liang ,  Hua Wang ,  Kenichi Mori

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H04L27/363 ,  H03F1/3241 ,  H03F3/24 ,  H04L27/361

摘要： A baseband circuit for a communications transmitter includes a baseband modulator, a pulse-shaping filter, and an AMPR reduction circuit. The baseband modulator is configured to generate a sequence of symbols formatted in accordance with a non-constant envelope modulation scheme. The pulse-shaping filter is configured to band-limit the sequence of samples to provide a sequence of samples. The AMPR reduction circuit is configured to analyze and modify one or more samples in the sequence of samples, if a sample in the sequence of samples that has been previously analyzed by the AMPR reduction circuit is determined to have a magnitude less than a predetermined low-magnitude threshold.

摘要翻译： 用于通信发射机的基带电路包括基带​​调制器，脉冲整形滤波器和AMPR降低电路。 基带调制器被配置为生成根据非恒定包络调制方案格式化的符号序列。 脉冲整形滤波器被配置为限制样本序列以提供样本序列。 AMPR降低电路被配置为分析和修改样本序列中的一个或多个样本，如果已经由AMPR降低电路先前分析的样本序列中的样本被确定为具有小于预定低通滤波器的幅度， 幅度阈值。

公开(公告)号：US08331490B2

公开(公告)日：2012-12-11

申请号：US12395981

申请日：2009-03-02

申请人： Hua Wang ,  Paul Cheng-Po Liang ,  Richard W. D. Booth ,  Stephan V. Schell ,  Thomas E. Biedka

发明人： Hua Wang ,  Paul Cheng-Po Liang ,  Richard W. D. Booth ,  Stephan V. Schell ,  Thomas E. Biedka

IPC分类号： H04L27/20

CPC分类号： H04L25/03866

摘要： Methods and apparatus for conditioning communications signals based on detection of high-frequency in the polar domain. High-frequency events detected in a phase-difference component of a complex baseband signal in the polar domain are detected and used as a basis for performing hole-blowing on the complex baseband signal in the quadrature domain and/or nonlinear filtering either or both the magnitude and phase-difference components in the polar domain. Alternatively, high-frequency events detected in the phase-difference signal that correlate in time with low-magnitude events detected in a magnitude component of the complex baseband signal are used as a basis for performing hole-blowing on the complex baseband signal in the quadrature domain and/or nonlinear filtering either or both the magnitude and phase-difference components in the polar domain.

摘要翻译： 基于极区域中高频检测的通信信号调理方法和装置。 检测在极坐标域中的复基带信号的相差分量中检测到的高频事件，并将其用作在正交域中的复基带信号上执行空气吹扫和/或非线性滤波的基础 极化域中的幅度和相位差分量。 或者，在相位差信号中检测到的与在复基带信号的幅度分量中检测到的低幅度事件相关的高频事件被用作在正交中的复基带信号上执行吹空的基础 域和/或非线性滤波极化域中的幅度和相位差分量之一或两者。

公开(公告)号：US20090257526A1

公开(公告)日：2009-10-15

申请号：US12395981

申请日：2009-03-02

申请人： Hua Wang ,  Paul Cheng-Po Liang ,  Richard W.D. Booth ,  Stephan V. Schell ,  Thomas E. Biedka

发明人： Hua Wang ,  Paul Cheng-Po Liang ,  Richard W.D. Booth ,  Stephan V. Schell ,  Thomas E. Biedka

IPC分类号： H04L27/36

CPC分类号： H04L25/03866

摘要： Methods and apparatus for conditioning communications signals based on detection of high-frequency in the polar domain. High-frequency events detected in a phase-difference component of a complex baseband signal in the polar domain are detected and used as a basis for performing hole-blowing on the complex baseband signal in the quadrature domain and/or nonlinear filtering either or both the magnitude and phase-difference components in the polar domain. Alternatively, high-frequency events detected in the phase-difference signal that correlate in time with low-magnitude events detected in a magnitude component of the complex baseband signal are used as a basis for performing hole-blowing on the complex baseband signal in the quadrature domain and/or nonlinear filtering either or both the magnitude and phase-difference components in the polar domain.

摘要翻译： 基于极区域中高频检测的通信信号调理方法和装置。 检测在极坐标域中的复基带信号的相差分量中检测到的高频事件，并将其用作在正交域中的复基带信号上执行空气吹扫和/或非线性滤波的基础 极化域中的幅度和相位差分量。 或者，在相位差信号中检测到的与在复基带信号的幅度分量中检测到的低幅度事件相关的高频事件被用作在正交中的复基带信号上执行吹空的基础 域和/或非线性滤波极化域中的幅度和相位差分量之一或二者。

公开(公告)号：US08340209B2

公开(公告)日：2012-12-25

申请号：US12554863

申请日：2009-09-04

申请人： Paul Cheng-Po Liang ,  Koji Takinami ,  Hua Wang ,  Toru Matsuura

发明人： Paul Cheng-Po Liang ,  Koji Takinami ,  Hua Wang ,  Toru Matsuura

IPC分类号： H04L25/34 ,  H04L25/49

CPC分类号： H04L25/4917

摘要： The disclosure relates to a method and apparatus for providing efficient signal transmission. Conventional linear amplifiers are most efficient when operated in compressed mode. In the compressed mode, the digital power amplifier switches between the on and off modes. A digital power amplifier operates in compressed mode only if the incoming signal is an on-off constant envelop signal. In one embodiment, the disclosure provides a method and apparatus for converting a digital baseband signal to on-off constant envelop signals for processing through binary-weighted or thermometer-weighted amplifier which are operated in compressed mode.

摘要翻译： 本公开涉及一种用于提供有效信号传输的方法和装置。 传统的线性放大器在压缩模式下工作时效率最高。 在压缩模式下，数字功率放大器在导通和关断模式之间切换。 数字功率放大器仅在输入信号为开 - 关恒定包络信号时才以压缩模式工作。 在一个实施例中，本公开提供了一种用于将数字基带信号转换为开 - 关恒定包络信号以便通过以压缩模式操作的二进制加权或温度计加权放大器进行处理的方法和装置。

公开(公告)号：US20100246716A1

公开(公告)日：2010-09-30

申请号：US12414016

申请日：2009-03-30

申请人： Hua Wang ,  Paul Cheng-Po Liang

发明人： Hua Wang ,  Paul Cheng-Po Liang

IPC分类号： H04L27/36

CPC分类号： H04L27/362

摘要： Methods and apparatus for reducing high-frequency events in polar domain signals. An exemplary method includes first generating an unmodified rectangular-coordinate signal having in-phase (I) and quadrature phase (Q) components that are modulated according to a predetermined modulation scheme. Next a first sample of the unmodified rectangular-coordinate signal is modified based on how close the first sample is to the origin in the complex signal plane and how fast a signal trajectory between the first sample and a subsequent sample changes. Finally, the modified rectangular-coordinate signal is converted to a polar domain signal having amplitude and phase components. By modifying the first sample in this manner, either or both the amplitude and phase components have reduced high-frequency content compared to a polar domain signal that would be generated without the first sample having been first modified.

摘要翻译： 减少极地信号中高频事件的方法和装置。 一种示例性方法包括：首先产生具有根据预定调制方案调制的同相（I）和正交相位（Q）分量的未修改的矩形坐标信号。 接下来，未修改的矩形坐标信号的第一个样本是基于第一个样本与复信号平面中原点的接近程度以及第一个样本和随后的样本之间的信号轨迹变化的速度进行修改。 最后，将修正的矩形坐标信号转换成具有振幅和相位分量的极坐标信号。 通过以这种方式修改第一样本，与不经第一次样品首次修改而产生的极坐标信号相比，振幅和相位分量中的任一个或两个振幅和相位分量具有降低的高频内容。

公开(公告)号：US08385469B2

公开(公告)日：2013-02-26

申请号：US12690870

申请日：2010-01-20

申请人： Hua Wang ,  Toru Matsuura ,  Gregoire le Grand de Mercey ,  Paul Cheng-Po Liang ,  Koji Takinami ,  Richard W. D. Booth

发明人： Hua Wang ,  Toru Matsuura ,  Gregoire le Grand de Mercey ,  Paul Cheng-Po Liang ,  Koji Takinami ,  Richard W. D. Booth

IPC分类号： H03C3/00

CPC分类号： H04L27/36 ,  H03D7/165

摘要： A low cost high-efficiency all-digital transmitter using all-digital power amplifiers (“DPA”) and various mapping techniques to generate an output signal, which substantially reproduces a baseband signal at a carrier frequency. A baseband signal generator generates a baseband signal which is quantized by a signal processor using a quantization map. A DPA control mapper outputs control signals to phase selectors using the quantized signal and a quantization table. Each phase selector receives one of the control signals and outputs a waveform at a carrier frequency with a phase corresponding to the control signals, or an inactive signal. Each DPA in a DPA array has an assigned weight, receives one of the waveforms from the phase selectors, and outputs a power signal according to the weight of the DPA and the phase of the received waveform. The combined power signal substantially reproduces the baseband signal at the carrier frequency.

摘要翻译： 使用全数字功率放大器（DPA）和各种映射技术的低成本高效率全数字发射机来产生输出信号，其基本上以载波频率再现基带信号。 基带信号发生器生成使用量化映射由信号处理器量化的基带信号。 DPA控制映射器使用量化信号和量化表将控制信号输出到相位选择器。 每个相位选择器接收一个控制信号，并以与控制信号相对应的相位的载波频率或无效信号输出波形。 DPA阵列中的每个DPA具有分配的权重，从相位选择器接收波形之一，并根据DPA的权重和接收波形的相位输出功率信号。 组合功率信号基本上以载波频率再现基带信号。

公开(公告)号：US20110176636A1

公开(公告)日：2011-07-21

申请号：US12690870

申请日：2010-01-20

申请人： Hua Wang ,  Toru Matsuura ,  Gregoire Ie Grand de Mercey ,  Paul Cheng-Po Liang ,  Koji Takinami ,  Richard W. D. Booth

发明人： Hua Wang ,  Toru Matsuura ,  Gregoire Ie Grand de Mercey ,  Paul Cheng-Po Liang ,  Koji Takinami ,  Richard W. D. Booth

IPC分类号： H04L27/12

CPC分类号： H04L27/36 ,  H03D7/165

摘要： A low cost high-efficiency all-digital transmitter using all-digital power amplifiers (“DPA”) and various mapping techniques to generate an output signal, which substantially reproduces a baseband signal at a carrier frequency. A baseband signal generator generates a baseband signal which is quantized by a signal processor using a quantization map. A DPA control mapper outputs control signals to phase selectors using the quantized signal and a quantization table. Each phase selector receives one of the control signals and outputs a waveform at a carrier frequency with a phase corresponding to the control signals, or an inactive signal. Each DPA in a DPA array has an assigned weight, receives one of the waveforms from the phase selectors, and outputs a power signal according to the weight of the DPA and the phase of the received waveform. The combined power signal substantially reproduces the baseband signal at the carrier frequency.

摘要翻译： 使用全数字功率放大器（“DPA”）和各种映射技术的低成本高效全数字发射机产生输出信号，其基本上以载波频率再现基带信号。 基带信号发生器生成使用量化映射由信号处理器量化的基带信号。 DPA控制映射器使用量化信号和量化表将控制信号输出到相位选择器。 每个相位选择器接收一个控制信号，并以与控制信号相对应的相位的载波频率或无效信号输出波形。 DPA阵列中的每个DPA具有分配的权重，从相位选择器接收波形之一，并根据DPA的权重和接收波形的相位输出功率信号。 组合功率信号基本上以载波频率再现基带信号。

公开(公告)号：US20110058622A1

公开(公告)日：2011-03-10

申请号：US12554863

申请日：2009-09-04

申请人： Paul Cheng-Po Liang ,  Koji Takinami ,  Hua Wang ,  Toru Matsuura

发明人： Paul Cheng-Po Liang ,  Koji Takinami ,  Hua Wang ,  Toru Matsuura

IPC分类号： H04L25/49

CPC分类号： H04L25/4917

摘要： The disclosure relates to a method and apparatus for providing efficient signal transmission. Conventional linear amplifiers are most efficient when operated in compressed mode. In the compressed mode, the digital power amplifier switches between the on and off modes. A digital power amplifier operates in compressed mode only if the incoming signal is an on-off constant envelop signal. In one embodiment, the disclosure provides a method and apparatus for converting a digital baseband signal to on-off constant envelop signals for processing through binary-weighted or thermometer-weighted amplifier which are operated in compressed mode.

摘要翻译： 本公开涉及一种用于提供有效信号传输的方法和装置。 传统的线性放大器在压缩模式下工作时效率最高。 在压缩模式下，数字功率放大器在导通和关断模式之间切换。 数字功率放大器仅在输入信号为开 - 关恒定包络信号时才以压缩模式工作。 在一个实施例中，本公开提供了一种用于将数字基带信号转换为开 - 关恒定包络信号以便通过以压缩模式操作的二进制加权或温度计加权放大器进行处理的方法和装置。

公开(公告)号：US08300729B2

公开(公告)日：2012-10-30

申请号：US12414016

申请日：2009-03-30

申请人： Hua Wang ,  Paul Cheng-Po Liang

发明人： Hua Wang ,  Paul Cheng-Po Liang

IPC分类号： H03C3/00 ,  H04L27/12

CPC分类号： H04L27/362

摘要： Methods and apparatus for reducing high-frequency events in polar domain signals. An exemplary method includes first generating an unmodified rectangular-coordinate signal having in-phase (I) and quadrature phase (Q) components that are modulated according to a predetermined modulation scheme. Next a first sample of the unmodified rectangular-coordinate signal is modified based on how close the first sample is to the origin in the complex signal plane and how fast a signal trajectory between the first sample and a subsequent sample changes. Finally, the modified rectangular-coordinate signal is converted to a polar domain signal having amplitude and phase components. By modifying the first sample in this manner, either or both the amplitude and phase components have reduced high-frequency content compared to a polar domain signal that would be generated without the first sample having been first modified.

摘要翻译： 减少极地信号中高频事件的方法和装置。 一种示例性方法包括：首先产生具有根据预定调制方案调制的同相（I）和正交相位（Q）分量的未修改的矩形坐标信号。 接下来，未修改的矩形坐标信号的第一个样本是基于第一个样本与复信号平面中原点的接近程度以及第一个样本和随后的样本之间的信号轨迹变化的速度进行修改。 最后，将修正的矩形坐标信号转换成具有振幅和相位分量的极坐标信号。 通过以这种方式修改第一样本，与不经第一次样品首次修改而产生的极坐标信号相比，振幅和相位分量中的任一个或两个振幅和相位分量具有降低的高频内容。