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    Method for the reduction of phase noise introduced by the SDH network (synchronous digital hierarchy network) by pointer justification and integrated circuits for the implementation of the method
    2.
    发明公开
    Method for the reduction of phase noise introduced by the SDH network (synchronous digital hierarchy network) by pointer justification and integrated circuits for the implementation of the method 失效
    降低相位噪声的方法在一个SDH网络通过适合于实现此方法的字符锅技术的手段，和集成电路引起的。

    公开(公告)号：EP0492549A2

    公开(公告)日：1992-07-01

    申请号：EP91122023.4

    申请日：1991-12-20

    申请人： ALCATEL ITALIA S.p.A.

    发明人： Frigerio, Silvano ,  Gastaldello, Stefano ,  Russo, Giovanni

    IPC分类号： H04J3/07

    CPC分类号： H04Q11/0478 ,  H03L7/085 ,  H03L7/0994 ,  H04J3/076 ,  H04J2203/0089

    摘要： In a method for reducing the phase noise introduced by pointer justifications from a synchronous digital hierarchy network in a transmitted numerical signal, occasional redundancies associated with bit justifications and fixed redundancies are combined with occasional prefiltered redundancies associated with the pointer justifications, and the combined signal is filtered in an analog phase locked loop. The occasional redundancies associated with the pointer justifications and at least part of the fixed redundancies with or without bit justifications are prefiltered in two stages, and the prefiltered signals are combined with the eventual occasional redundancies associated with the bit justifications only in case these occasional redundancies were not prefiltered.

    摘要翻译： 在用于减小由指针调整从一个同步数字体系网络中的反式mitted数值信号引入的相位噪声的方法，与位理相关联的偶然的冗余和固定冗余用与指针调整相关联的偶然预先过滤冗余合并，并且将合并的信号是 过滤在沿锁相环。 与指针调整和固定冗余有或没有位理由的至少一部分相关联的偶然的冗余被预过滤以两个阶段，而预过滤信号与仅在壳体论文偶尔冗余均与位理相关联的最终偶尔冗余组合 不预过滤。