Clock offset compensation via signal windowing and non-data-aided (NDA) timing estimator
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    发明申请
    Clock offset compensation via signal windowing and non-data-aided (NDA) timing estimator 审中-公开
    通过信号窗口和非数据辅助(NDA)定时估计器实现时钟偏移补偿

    公开(公告)号:US20050123070A1

    公开(公告)日:2005-06-09

    申请号:US11000166

    申请日:2004-11-29

    CPC分类号: H04L7/0054 H04L27/22

    摘要: In the invention, a simple and robust method for clock offset compensation is proposed using an equalizer with time-varying signal windowing for which the timing information needed is obtained by an existing non-data-aided (NDA) timing estimator. Instead of interpolating the received signal, the proposed method compensates clock offset by using a moving signal window for equalizer. Since no interpolation is needed, the timing information required for the proposed method need not be so accurate as required for interpolation methods. Rather than the exact time drift due to clock offset, the proposed method requires only the timing points where the time drift accumulates to a pre-defined threshold. By applying an existing non-data-aided (NDA) timing estimator, the needed timing information can be obtained easily. Moreover, thanks to robustness of the NDA timing estimator, the proposed method is inherently robust and simple in implementation.

    摘要翻译: 在本发明中,提出了一种用于时钟偏移补偿的简单且鲁棒的方法,其使用具有随时间变化的信号窗口化的均衡器,由现有的非数据辅助(NDA)定时估计器获得所需的定时信息。 所提出的方法代替内插接收到的信号,通过使用用于均衡器的移动信号窗口来补偿时钟偏移。 由于不需要插值,因此所提出的方法所需的定时信息不需要如插值方法所要求的精确。 而不是由于时钟偏移引起的精确时间漂移,所提出的方法仅需要时间漂移累积到预定阈值的定时点。 通过应用现有的非数据辅助(NDA)定时估计器,可以容易地获得所需的定时信息。 此外,由于NDA定时估计器的鲁棒性,所提出的方法本质上是稳健且实现简单的。