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arXiv 2002.12660eess.SPcs.LGcs.NIstat.ML
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5G中的同步:贝叶斯方法

Synchronization in 5G: a Bayesian Approach

IHP – Leibniz-Institut für innovative Mikroelektronik(莱布尼茨创新微电子研究所);Humboldt University of Berlin(柏林洪堡大学)

M. Goodarzi, D. Cvetkovski, N. Maletic, J. Gutierrez, E. Grass

摘要:

在这项工作中,我们提出了一种混合的方法来同步大规模的网络。特别是,我们利用卡尔曼滤波(KF)以及由精确时间协议(PTP)生成的时间戳进行成对节点同步。此外,我们调查的优点因子图(FG)随着置信传播(BP)算法在实现高精度的端到端网络同步。最后,我们提出了将大型网络划分为本地同步域的想法,为每个同步域使用合适的同步算法。仿真结果表明,尽管在混合方法的简化,在偏移估计的误差保持在5纳秒以下。

英文摘要:

In this work, we propose a hybrid approach to synchronize large scale networks. In particular, we draw on Kalman Filtering (KF) along with time-stamps generated by the Precision Time Protocol (PTP) for pairwise node synchronization. Furthermore, we investigate the merit of Factor Graphs (FGs) along with Belief Propagation (BP) algorithm in achieving high precision end-to-end network synchronization. Finally, we present the idea of dividing the large-scale network into local synchronization domains, for each of which a suitable sync algorithm is utilized. The simulation results indicate that, despite the simplifications in the hybrid approach, the error in the offset estimation remains below 5 ns.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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