Precision of Pulse-Coupled Oscillator Synchronization on FPGA-Based Radios

Conference: SCC 2015 - 10th International ITG Conference on Systems, Communications and Coding
02/02/2015 - 02/05/2015 at Hamburg, Germany

Proceedings: ITG-Fb 254: 10th International ITG Conference on Systems, Communications and Coding (SCC 2015)

Pages: 6Language: englishTyp: PDF

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Authors:
Brandner, Guenther; Klinglmayr, Johannes; Schilcher, Udo; Egarter, Dominik; Bettstetter, Christian (University of Klagenfurt, Mobile Systems Group, Inst. of Networked and Embedded Systems, Klagenfurt, Austria)
Bettstetter, Christian (Lakeside Labs GmbH, Klagenfurt, Austria)

Abstract:
The precision of synchronization algorithms based on the theory of pulse-coupled oscillators is evaluated on FPGAbased radios for the first time. Measurements show that such algorithms can reach precision in the low microsecond range when being implemented in the physical layer. Furthermore, we propose an algorithm extension accounting for phase rate deviations of the hardware and show that an improved precision below one microsecond is possible with this extension in the given setup. The resulting algorithm can thus be applied in ad hoc wireless systems for fully distributed synchronization of transmission slots or sleep cycles, in particular, if centralized synchronization is impossible.