A real-time implementation of precise timestamp-free network synchronization
Max Li, Stefan Gvozdenovic, Alexander Ryan, Radu David, D. Richard Brown, Andrew G. Klein · 2015
This paper describes a real-time implementation of precise synchronization between a master and slave node. The nodes were both implemented on separate Texas Instruments DSP boards with real-time software implemented in C. Timestamp-free synchronization is performed implicitly through the timing of the master node's responses to the slave node. The slave node tracks and predicts the master node's clock through precise time of arrival estimation and Kalman filtering of the estimates. Experimental results demonstrate the slave node is able to consistently predict the master node's clock offset to within a few nanoseconds over one second prediction intervals.