Improved algorithms for synchronizing computer network clocks
IEEE/ACM Transactions on Networking (TON)
Ultra-Wideband Wireless Communications
Ultra-Wideband Wireless Communications
Fine-grained network time synchronization using reference broadcasts
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
EURASIP Journal on Applied Signal Processing
Performance evaluation of a network synchronization technique for CDMA cellular communications
IEEE Transactions on Wireless Communications
A historical perspective on telecommunications network synchronization
IEEE Communications Magazine
Ultra-wideband for multiple access communications
IEEE Communications Magazine
Ranging in a dense multipath environment using an UWB radio link
IEEE Journal on Selected Areas in Communications
A scalable synchronization protocol for large scale sensor networks and its applications
IEEE Journal on Selected Areas in Communications
Time synchronization in sensor networks: a survey
IEEE Network: The Magazine of Global Internetworking
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The synchronization of clocks at physically separated network nodes requires timed signal exchanges between the nodes. Ultra-wideband (UWB) impulse signals potentially provide the means for doing this very accurately, but unlike narrowband signals, pulse signals are more naturally suited to time-division multiple-access (TDMA) schemes. In this work, we describe TDMA time-transfer schemes that estimate the mappings from a master node's clock time into slaves' clock times based on specific wireless measurements. We propose an optimal approach to distribution of UWB transmissions between those that perform alignment of nodes' clock rates and those that determine clock offsets. Analytical equations for the timing error variances are derived and our results suggest a possible lower bound for timetransfer error using UWB impulse signals.