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Precise Network Synchronization Technique Using Phase Adjustment and External Filtering
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- Authors
- Chang-Kyung Seong, Seung-Woo Lee, Woo-Young Choi
- Issue Date
- 2008-06
- Citation
- International Conference on Electronics, Informations and Communications (ICEIC) 2008, pp.416-419
- Language
- English
- Type
- Conference Paper
- Abstract
- Network synchronization is extremely important for many applications. In order to improve the performance of Pulse Addition and Swallowing (PAS) method, which considers only TOD (Time-Of-Day) adjustment, we investigate clock rate synchronization. To achieve the extension of frequency resolution and deterministic control gain in clock rate control, the clock phase is directly adjusted. Also, digital LPF is used to mitigate fluctuation of clock rates due to granularity of TOD. The proposed structure is modeled and simulated with MATLAB.Simulation results for cascaded ten nodes show that the peak-to-peak time offset of 3UI is reduced to about 0.21UI by using LPF.