Print Email Facebook Twitter Scalable Network Based Clock Synchronization for Digital PET System Title Scalable Network Based Clock Synchronization for Digital PET System Author Bijwaard, M. Faculty Electrical Engineering, Mathematics and Computer Science Department Circuits and Systems Programme Embedded Systems Date 2015-03-13 Abstract Typically in synchronous digital systems time-based tasks are synchronized using hard-wired clock distribution networks. However in the growing application of large (wireless) sensor networks it is not always feasible to connect each sensor node to a hard-wired clock distribution network. Generally in such systems the sensor nodes are only connected via a (wireless) communication network, hence there have been implementations where clocks are synchronized via the network nodes, in general these solutions synchronize the network nodes in the range of milliseconds up to microseconds. Though some applications, like SPADnet, demand a network based clock synchronization in the range of picoseconds. Currently the SPADnet system is equipped with a hard-wired clock distribution network, this clock network does not scale well. Since one of the goals of SPADnet is to create a scalable system, a network based clock synchronization solution is a better alternative. In this thesis a hybrid solution is presented, where a hard-wired clock synchronization network is combined with a network based clock offset estimator. This combination enables scalability while maintaining high precision. A novel least squares synchronization algorithm is optimized and implemented in hardware equipped with a delayline FPGA TDC, allowing picosecond clock synchronization. Subject network basedclock synchronizationFPGASPADnet To reference this document use: http://resolver.tudelft.nl/uuid:2f3c8873-24d6-4134-8167-30de78ae6cab Part of collection Student theses Document type master thesis Rights (c) 2015 Bijwaard, M. Files PDF Msc_thesis_martijn_bijwaa ... inal_2.pdf 3.89 MB Close viewer /islandora/object/uuid:2f3c8873-24d6-4134-8167-30de78ae6cab/datastream/OBJ/view