Highly Accurate Timestamping for Ethernet-Based Clock Synchronization

<table>Timestamp error for a combined phase/frequency estimation (<svg height="13.55" id="M134" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 76.162498 13.55" width="76.162498" xmlns="http://www.w3.org/2000/svg">
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</svg>; <svg height="10.8125" id="M135" style="vertical-align:-0.10033pt" version="1.1" viewbox="0 0 45.512501 10.8125" width="45.512501" xmlns="http://www.w3.org/2000/svg">
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</svg>) with linear MMSE estimator using 128 samples. The histogram shows a total of 50 kTS in 75 bins, giving a standard deviation of 12.036 ps.</table>

Journal of Computer Networks and Communications

fig8

Figure 8

Figure 8: Highly Accurate Timestamping for Ethernet-Based Clock Synchronization 