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1.发明授权公开(公告)号：US08331490B2
公开(公告)日：2012-12-11
申请号：US12395981
申请日：2009-03-02
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。
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公开(公告)号：US07675993B2
公开(公告)日：2010-03-09
申请号：US11442488
申请日：2006-05-26
IPC分类号： H04L27/00
CPC分类号： H04L25/03866
摘要： This invention, generally speaking, modifies pulse amplitude modulated signals to reduce the ratio of average power to minimum power. The signal is modified in such a manner that the signal quality remains acceptable. The signal quality is described in terms of the Power Spectral Density (PSD) and the Error Vector Magnitude (EVM).
摘要翻译： 本发明一般地说是修改脉冲幅度调制信号以减小平均功率与最小功率的比值。 信号被修改为使得信号质量保持可接受的方式。 根据功率谱密度（PSD）和误差矢量幅度（EVM）来描述信号质量。
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公开(公告)号：US07054385B2
公开(公告)日：2006-05-30
申请号：US10037870
申请日：2001-10-22
IPC分类号： H03C1/52
CPC分类号： H04L25/03866
摘要： This invention, generally speaking, modifies pulse amplitude modulated signals to reduce the ratio of average power to minimum power. The signal is modified in such a manner that the signal quality remains acceptable. The signal quality is described in terms of the Power Spectral Density (PSD) and the Error Vector Magnitude (EVM).
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4.发明申请公开(公告)号：US20090257526A1
公开(公告)日：2009-10-15
申请号：US12395981
申请日：2009-03-02
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。
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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
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。
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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
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。
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7.发明申请公开(公告)号：US20080187072A1
公开(公告)日：2008-08-07
申请号：US12022677
申请日：2008-01-30
IPC分类号： H04L25/03
CPC分类号： H04L25/03834
摘要： Methods and apparatus for optimizing pulses provided by a pulse-shaping filter implemented in hardware. Pulses are optimized and generated by the pulse-shaping filter that are of finite length and meet one or more signal quality criteria, e.g., error vector magnitude (EVM) and/or adjacent channel leakage ratio (ACLR). According to one exemplary embodiment, a first finite length constraint is identified and a second out-of-band power criterion is identified. An error function is defined which measures the distortion of the generated signal relative to a reference pulse modeled after an ‘ideal’ pulse. The error function is minimized to determine optimized pulses, which when used to pulse-shape a communications signal, do not substantially increase in-channel distortion of said communications signal. To avoid the generation of excessive out-of-channel power, minimization is performed subject to a predetermined maximum allowable out-of-channel power condition.
摘要翻译： 用于优化由硬件实现的脉冲整形滤波器提供的脉冲的方法和装置。 脉冲由具有有限长度的脉冲整形滤波器优化并产生，并满足一个或多个信号质量标准，例如误差矢量幅度（EVM）和/或相邻信道泄漏比（ACLR）。 根据一个示例性实施例，识别第一有限长度约束并且识别第二带外功率标准。 定义了一个误差函数，其测量相对于在“理想”脉冲之后建模的参考脉冲的产生信号的失真。 误差函数被最小化以确定优化的脉冲，其在用于对通信信号进行脉冲形状时不大幅增加所述通信信号的信道内失真。 为了避免过多的信道外功率的产生，在预定的最大允许信道外功率条件下进行最小化。
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公开(公告)号：US07688157B2
公开(公告)日：2010-03-30
申请号：US12079353
申请日：2008-03-25
CPC分类号： H03C5/00
摘要： A modulation system includes an amplitude modulation path and a phase modulation path coupled to the amplitude modulation path. One of the amplitude modulation path and the phase modulation path receive a reduced current such that the reduced current reduces power consumption by the system. Preferably, the amplitude modulation path receives the reduced current. The amplitude modulation path has a first set of components and a second set of components. The first set of components consumes less power by using slower operation. The second set of components consumes less power by effectively not operating, or being turned off.
摘要翻译： 调制系统包括耦合到幅度调制路径的幅度调制路径和相位调制路径。 幅度调制路径和相位调制路径中的一个接收减小的电流，使得减小的电流降低了系统的功耗。 优选地，幅度调制路径接收减小的电流。 幅度调制路径具有第一组分量和第二组分量。 第一组组件通过使用较慢的操作消耗较少的功率。 第二组组件通过有效地不运行或被关闭而消耗较少的功率。
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公开(公告)号：US20080246550A1
公开(公告)日：2008-10-09
申请号：US12079353
申请日：2008-03-25
CPC分类号： H03C5/00
摘要： A modulation system includes an amplitude modulation path and a phase modulation path coupled to the amplitude modulation path. One of the amplitude modulation path and the phase modulation path receive a reduced current such that the reduced current reduces power consumption by the system. Preferably, the amplitude modulation path receives the reduced current. The amplitude modulation path has a first set of components and a second set of components. The first set of components consumes less power by using slower operation. The second set of components consumes less power by effectively not operating, or being turned off.
摘要翻译： 调制系统包括耦合到幅度调制路径的幅度调制路径和相位调制路径。 幅度调制路径和相位调制路径中的一个接收减小的电流，使得减小的电流降低了系统的功耗。 优选地，幅度调制路径接收减小的电流。 幅度调制路径具有第一组分量和第二组分量。 第一组组件通过使用较慢的操作消耗较少的功率。 第二组组件通过有效地不运行或被关闭而消耗较少的功率。
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10.发明申请Methods and Apparatus for Reducing Average-to-Minimum Power Ratio in Communications Signals 有权用于降低通信信号中的平均到最小功率比的方法和装置公开(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
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。
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