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    • 8. 发明授权
    • Device and method for automatically adjusting a phase-locked loop
    • 自动调节锁相环的装置和方法
    • US5268655A
    • 1993-12-07
    • US890043
    • 1992-05-27
    • Ping Dong
    • Ping Dong
    • H03L7/093H03L7/107
    • H03L7/093H03L7/107
    • A self-adjusting phase-locked loop (PLL) parameter adjusting device (APAD) (100) and method that automatically adjusts a phase-locked loop to provide tracking ability when and where needed, as opposed to utilizing a PLL adjusting device with preset parameters, thus maintaining minimal possible noise bandwidth. The method utilizes (1) successively integrating the PLL error output signal over a number of samples to provide a plurality of sums, (2) checking a predetermined number of sums and recording and counting the sign of each sum, (3) comparing the counted record to a predetermined threshold value, and (4) automatically adjusting PLL parameter(s) and the sample number in accordance with a predetermined strategy, such that adjusted PLL parameters are provided to the PLL.
    • 一种自调节锁相环(PLL)参数调节装置(APAD)(100)和方法,可自动调节锁相环,以在需要时和位置提供跟踪能力,而不是利用具有预设参数的PLL调节装置 ,从而保持最小可能的噪声带宽。 该方法利用(1)在多个样本上连续积分PLL误差输出信号以提供多个和,(2)检查预定数量的和,并记录和计数每个和的符号,(3)比较计数 记录到预定阈值,以及(4)根据预定策略自动调整PLL参数和样本数,使得调整的PLL参数被提供给PLL。
    • 10. 发明授权
    • Adaptive known signal canceller
    • 自适应已知信号消除器
    • US08135058B2
    • 2012-03-13
    • US12249814
    • 2008-10-10
    • Jordan Christopher CookmanPing DongTao Yu
    • Jordan Christopher CookmanPing DongTao Yu
    • H04L27/01H04B3/20
    • H04L25/03159H04L25/0212H04L25/03057H04L27/2657H04L2025/03414
    • An adaptive known signal canceller comprising of a known signal canceller filter responsive to a known signal including a known portion of a transmitted signal, the known signal canceller filter operative to generate a filtered known signal, and a subtractor unit responsive to an input signal and operative to generate an output signal, the subtractor unit configured to subtract the filtered known signal from the input signal to generate an output signal, such that the known portion of the transmitted signal is substantially removed from the input signal. The adaptive known signal canceller further comprising of a known signal canceller update unit, responsive to a desired signal and an output signal and operative to continually adjust the coefficients of the known signal canceller filter based on the difference between the output signal and the desired signal, so that the filter coefficients substantially reflect the impulse response of a channel.
    • 一种自适应的已知信号消除器,其包括响应于包括已发射信号的已知信号的已知信号的已知信号消除器滤波器,用于产生已滤波的已知信号的已知信号消除器滤波器以及响应于输入信号和操作的减法器单元 为了产生输出信号,减法器单元被配置为从输入信号中减去已滤波的已知信号以产生输出信号,从而基本上从输入信号中去除已发射信号的已知部分。 自适应已知信号消除器还包括已知的信号消除器更新单元,响应所需信号和输出信号,并且可操作以基于输出信号和期望信号之间的差连续地调整已知信号消除器滤波器的系数, 使得滤波器系数基本上反映了信道的脉冲响应。