发明名称 |
Synchronization system using aging prediction |
摘要 |
An improved local synchronization module which uses Frequency-phase adaptive double locked loop (FPADLL) to control a stable controllable oscillator is disclosed. A single physical feedback loop is implemented which can operate in either a phase locked loop mode or a frequency locked loop mode. The sync module includes a controller which determines in which mode the feedback loop operates. The controller also uses slipping information from a network reference recovery interface to reduce slipping. Also effects of ageing of the stable controllable oscillator are predicted and compensated for.
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申请公布号 |
US6104915(A) |
申请公布日期 |
2000.08.15 |
申请号 |
US19970997983 |
申请日期 |
1997.12.24 |
申请人 |
NORTEL NETWORKS CORPORATION |
发明人 |
ZHANG, GENZAO;SMITH, ROLAND;OPREA, DAN;FERLAND, ROGER |
分类号 |
H03L7/08;H04J3/06;H04L7/00;H04L7/033;(IPC1-7):H04B1/40 |
主分类号 |
H03L7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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