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    Apparatus and method for dynamically clocking a loop filter in a digital communications device
    2.
    发明申请
    Apparatus and method for dynamically clocking a loop filter in a digital communications device 有权
    用于在数字通信设备中动态计时环路滤波器的装置和方法

    公开(公告)号：US20070104289A1

    公开(公告)日：2007-05-10

    申请号：US11268798

    申请日：2005-11-08

    申请人： Paul Liang ,  Rajesh Patel

    发明人： Paul Liang ,  Rajesh Patel

    IPC分类号： H04L27/00

    CPC分类号： H04L27/12 ,  H04L27/20

    摘要： A transmitter has a signal generator, an amplifier, a detection circuit, a comparison circuit, a loop filter, and an adjustable clock. The signal generator produces a signal. The signal is produced with a first frequency characteristic and contains frequency-related information. The detection circuit detects the first frequency-related characteristic and generates an associated signal in response. A comparison circuit compares the signal from the detection circuit and another signal. It outputs a signal associated with the difference between the two. A loop filter receives the output of the comparison circuit and generates a signal to the signal generator in. The loop filter is clocked at a second frequency by a signal from a clock circuit. The clock circuit can compare the first frequency and the second frequency, and can change the second frequency based upon a relationship between the two frequencies.

    摘要翻译： 发射机具有信号发生器，放大器，检测电路，比较电路，环路滤波器和可调节时钟。 信号发生器产生信号。 该信号产生具有第一频率特性并且包含频率相关信息。 检测电路检测第一频率相关特性并产生响应的相关信号。 比较电路将来自检测电路的信号与另一信号进行比较。 它输出与两者之间的差异相关联的信号。 环路滤波器接收比较电路的输出并产生信号到信号发生器。环路滤波器以来自时钟电路的信号以第二频率被计时。 时钟电路可以比较第一频率和第二频率，并且可以基于两个频率之间的关系来改变第二频率。

    Method and apparatus for pulse optimization for non-linear filtering
    3.
    发明申请
    Method and apparatus for pulse optimization for non-linear filtering 审中-公开
    用于非线性滤波的脉冲优化方法和装置

    公开(公告)号：US20070211829A1

    公开(公告)日：2007-09-13

    申请号：US11591702

    申请日：2006-11-02

    申请人： Paul Liang ,  Stephan Schell

    发明人： Paul Liang ,  Stephan Schell

    IPC分类号： H03D1/24

    CPC分类号： H04L25/03834

    摘要： Methods and apparatus for reducing signal degradation of a communications signal caused by reducing the average-to-minimum amplitude ratio (AMR) of a communications signal. According to one exemplary method, times when the amplitude of a communications signal falls below or is likely to fall below a predetermined magnitude minimum. Corrective pulses are generated, which are combined with the communications signal in the temporal vicinities when the amplitude of the communications signal falls below the predetermined magnitude minimum, to reduce the AMR of the communications signal. The corrective pulses are generated by a nonlinear filter that is configured to minimize the amount of in-channel distortion the corrective pulses introduce to the communications signal by their insertion while substantially preserving an out-of-band measure of quality of the communications signal.

    摘要翻译： 降低通信信号的平均至最小振幅比（AMR）引起的通信信号信号劣化的方法和装置。 根据一个示例性方法，当通信信号的幅度下降到或可能低于预定的最小值时的时间。 当通信信号的幅度下降到预定幅度最小值以下时，产生与时间附近的通信信号组合的纠正脉冲，以减小通信信号的AMR。 校正脉冲由非线性滤波器产生，非线性滤波器被配置为通过其插入将校正脉冲引入通信信号的通道内失真量最小化，同时基本上保持通信信号质量的带外测量。

    Reduction of average-to-minimum power ratio in communications signals
    4.
    发明申请
    Reduction of average-to-minimum power ratio in communications signals 失效
    降低通信信号中的平均功率与最小功率比

    公开(公告)号：US20060227895A1

    公开(公告)日：2006-10-12

    申请号：US11442488

    申请日：2006-05-26

    申请人： Richard Booth ,  Stephan Schell ,  Thomas Biedka ,  Paul Liang

    发明人： Richard Booth ,  Stephan Schell ,  Thomas Biedka ,  Paul Liang

    IPC分类号： H04L27/00 ,  H04L25/03

    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。