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31.发明申请METHODS AND APPARATUS FOR REDUCING HIGH-FREQUENCY EVENTS IN POLAR DOMAIN SIGNALS 有权减少极域信号中高频事件的方法和装置公开(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。
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32.发明授权Methods and apparatus for reducing high-frequency events in polar domain signals 有权减少极地信号中高频事件的方法和装置公开(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
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。
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33.发明授权Methods and apparatus for reducing average-to-minimum power ratio in communications signals 有权降低通信信号中平均功率与最小功率比的方法和装置公开(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
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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34.发明授权公开(公告)号：US08351558B2
公开(公告)日：2013-01-08
申请号：US12567427
申请日：2009-09-25
CPC分类号： H04L27/18
摘要： The disclosure provides an effective means for fine-resolution determination of the frequency content of an RF signal using low speed digital circuits. The disclosure relates to a method and apparatus for decomposing a high frequency RF signal into several low frequency signals or data streams without loss of any information and without the use of extraneous circuit components such as local oscillators, mixers or offset phase-locked loops. Single or multiple phase oscillator outputs are fed directly to a single or multiple direct RF frequency-to-digital (DrfDC) circuits. The front end of the DrfDC circuit decomposes a high frequency signal into several low frequency signals without loss of any information. The low frequency signals are processed by the back-end of the DrfDC and converted into digital data streams. The digital data streams are then combined and averaged to represent the frequency of the input RF signal.
摘要翻译： 本公开提供了使用低速数字电路精细分辨率确定RF信号的频率内容的有效手段。 本公开涉及一种用于将高频RF信号分解为几个低频信号或数据流而不丢失任何信息并且不使用诸如本地振荡器，混频器或偏移锁相环之类的外部电路部件的方法和装置。 单相或多相振荡器输出直接馈送到单个或多个直接RF频数（DrfDC）电路。 DrfDC电路的前端将高频信号分解成几个低频信号，而不会丢失任何信息。 低频信号由DrfDC的后端处理并转换为数字数据流。 然后将数字数据流组合并平均以表示输入RF信号的频率。
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35.发明申请公开(公告)号：US20110075755A1
公开(公告)日：2011-03-31
申请号：US12567427
申请日：2009-09-25
CPC分类号： H04L27/18
摘要： The disclosure provides an effective means for fine-resolution determination of the frequency content of an RF signal using low speed digital circuits. The disclosure relates to a method and apparatus for decomposing a high frequency RF signal into several low frequency signals or data streams without loss of any information and without the use of extraneous circuit components such as local oscillators, mixers or offset phase-locked loops. Single or multiple phase oscillator outputs are fed directly to a single or multiple direct RF frequency-to-digital (DrfDC) circuits. The front end of the DrfDC circuit decomposes a high frequency signal into several low frequency signals without loss of any information. The low frequency signals are processed by the back-end of the DrfDC and converted into digital data streams. The digital data streams are then combined and averaged to represent the frequency of the input RF signal.
摘要翻译： 本公开提供了使用低速数字电路精细分辨率确定RF信号的频率内容的有效手段。 本公开涉及一种用于将高频RF信号分解为几个低频信号或数据流而不丢失任何信息并且不使用诸如本地振荡器，混频器或偏移锁相环之类的外部电路部件的方法和装置。 单相或多相振荡器输出直接馈送到单个或多个直接RF频数（DrfDC）电路。 DrfDC电路的前端将高频信号分解成几个低频信号，而不会丢失任何信息。 低频信号由DrfDC的后端处理并转换为数字数据流。 然后将数字数据流组合并平均以表示输入RF信号的频率。
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36.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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37.发明申请Methods and apparatus for conditioning low-magnitude events in communications signals 有权用于调节通信信号中低幅度事件的方法和装置公开(公告)号：US20080045163A1
公开(公告)日：2008-02-21
申请号：US11505746
申请日：2006-08-17
IPC分类号： H04B1/02
CPC分类号： H04L27/362 , H03F1/0205 , H03F1/0211 , H03F3/24 , H03F2200/336 , H03F2200/451 , H04L27/367
摘要： Methods and apparatus for conditioning low-magnitude events in electrical signals. According to an exemplary method, a low-magnitude event occurring in a signal trajectory of a received electrical signal is analyzed. The low-magnitude event is defined by a data point on a signal trajectory having a magnitude that is less than a predetermined signal magnitude minimum. A correction impulse having a correction magnitude and a correction phase is generated based on the magnitude and phase of data points on the signal trajectory that occur prior to and after the occurrence of the low magnitude event. The correction impulse is combined with the original electrical signal in the temporal vicinity of the low-magnitude event, thereby generating a corrected electrical signal having a more controlled bandwidth.
摘要翻译： 用于调节电信号中低电平事件的方法和装置。 根据示例性方法，分析在接收的电信号的信号轨迹中发生的低幅度事件。 低幅度事件由具有小于预定信号幅度最小值的信号轨迹上的数据点定义。 基于在低幅度事件发生之前和之后发生的信号轨迹上的数据点的大小和相位，产生具有校正幅度和校正相位的校正脉冲。 校正脉冲与低电平事件的时间附近的原始电信号组合，从而产生具有更多受控带宽的校正电信号。
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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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39.发明授权Apparatus and method for conditioning a modulated signal in a communications device 有权用于调节通信设备中的调制信号的装置和方法公开(公告)号：US07675995B2
公开(公告)日：2010-03-09
申请号：US11274068
申请日：2005-11-14
CPC分类号： H04L27/205
摘要： A device for transmitting information in a communications signal is envisioned. The information is modulated, at least in part, with a first angle-related characteristic. The device has a digital conversion circuit operable to convert information to be broadcast into a digital form. A constellation mapper is coupled to the digital conversion circuit, and is operable to convert the digital information into information associated with a constellation. A trajectory generation circuit generates samples denoting a trajectory within the constellation for the information. A transition analysis circuit determines a change in value of an angle-related characteristic in a transition between two samples, and a threshold detection circuit detects whether the change in value fails to meet a particular threshold. An angle-related characteristic distribution circuit can then distribute a portion of the change in value associated with the transition to at least one other transition.
摘要翻译： 设想在通信信号中发送信息的装置。 该信息至少部分地利用第一角度相关特征进行调制。 该装置具有数字转换电路，可操作以将待广播的信息转换为数字形式。 星座映射器耦合到数字转换电路，并且可操作以将数字信息转换为与星座相关联的信息。 轨迹生成电路生成表示信息星座内的轨迹的样本。 转移分析电路确定两个采样之间的转换中的角度相关特性的值的变化，并且阈值检测电路检测值的变化是否不符合特定阈值。 角度相关特征分布电路然后可以将与转换相关联的值的变化的一部分分配给至少一个其他转变。
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40.发明授权Method of and apparatus for improving the signal-to-noise ratio for a digital conversion circuit 有权用于提高数字转换电路的信噪比的方法和装置公开(公告)号：US07528664B1
公开(公告)日：2009-05-05
申请号：US12002733
申请日：2007-12-17
申请人： Paul Cheng-Po Liang
发明人： Paul Cheng-Po Liang
IPC分类号： H03L7/06
CPC分类号： H03L7/085
摘要： The signal-to-noise ratio for a digital conversion circuit is improved by taking a source signal and generating N signals that are each phase-shifted relative to each other, thereby generating N phase-shifted signals. Each of the N signals has a frequency that is a fraction of a frequency of the source signal. The source signal is input to a dividing circuit to generate the N signals. The source signal is generated by a signal source, such as an oscillator. Each of the N signals is hard-limited and processed through a detection circuit. The detection circuit can be a frequency detection circuit configured to determine the frequency of the source signal and to output a corresponding digital word, or a phase detection circuit configured to determine a phase of the source signal and to output a corresponding digital word.
摘要翻译： 通过获取源信号并产生相对于彼此相移的N个信号来提高数字转换电路的信噪比，从而产生N个相移信号。 N个信号中的每一个具有作为源信号的频率的一部分的频率。 源信号被输入到分频电路以产生N信号。 源信号由诸如振荡器的信号源产生。 N个信号中的每一个被硬限制并通过检测电路进行处理。 检测电路可以是被配置为确定源信号的频率并输出相应数字字的频率检测电路，或者被配置为确定源信号的相位并输出相应的数字字的相位检测电路。
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