Minimax optimum joint frequency and phase recovery in IEEE 1588
Minimax optimum joint frequency and phase recovery in IEEE 1588
复制标题
IEEE 1588 中的 Minimax 最佳联合频率和相位恢复
DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
Mark Bordogna
中科院分区:
文献类型:
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作者:
Anand Guruswamy;Rick S. Blum;S. Kishore;Mark Bordogna
In the IEEE 1588 Precision Time Protocol (PTP), the recovery of clock frequency and phase from packet timestamps must be modeled as a statistical estimation problem, due to the random nature of end-to-end delays that is inherent to packet-switched networks. Recently, a new minimax optimum estimator for phase offset estimation was proposed by the authors. This approach assumes that perfect frequency synchronization is already available at the slave clock. In this paper, we show that when perfect frequency synchronization is unavailable, this estimator can be extended to jointly estimate clock phase and frequency offsets. The mean squared error of these estimators can be used to obtain fundamental limits on synchronization accuracy in such scenarios. Simulation results indicate that the proposed estimators provide significant performance benefits over conventional frequency and phase estimation techniques.
DOI:
10.1109/itst.2012.6425166
发表时间:
2012
期刊:
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影响因子:
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作者:
Anyaegbu M
通讯作者:
Anyaegbu M