Adaptive packet selection for clock recovery
Adaptive packet selection for clock recovery
复制标题
用于时钟恢复的自适应数据包选择
DOI：
10.1109/ispcs.2010.5609775
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
D. Morgan
中科院分区：
文献类型：
--
作者：
I. Hadžić;D. Morgan
分组延迟变化（PDV）是基于分组的同步系统中的主要噪声源。为了滤除这种类型的噪声，许多时钟恢复算法基于网络传输时间的样本最小统计来选择分组。虽然这样的过滤器在某些类型的网络中可能非常有效，但也有许多网络和背景流量模式的样本最小值远远不是最佳的。在本文中，我们提出了一个过滤器，动态评估多个数据包选择标准，并选择一个，目前最大限度地减少噪音。我们还介绍了新自适应滤波器的实验评估结果。
Packet delay variation (PDV) is a dominant source of noise in packet-based synchronization systems. To filter this type of noise, many clock recovery algorithms select packets based on the sample-minimum statistic of the network transit time. Although such a filter can be very effective in certain types of networks, there are just as many networks and background traffic patterns for which sample-minimum is far from optimal. In this paper, we propose a filter that dynamically evaluates multiple packet selection criteria and selects the one that currently minimizes the noise. We also present the results of an experimental evaluation of the new adaptive filter.