Decentralized Synchronization and Estimation in Wireless Networks

  • Authors:
  • Nikolai Nefedov

  • Affiliations:
  • Nokia Research Center, Zurich, Switzerland

  • Venue:
  • NEW2AN '08 / ruSMART '08 Proceedings of the 8th international conference, NEW2AN and 1st Russian Conference on Smart Spaces, ruSMART on Next Generation Teletraffic and Wired/Wireless Advanced Networking
  • Year:
  • 2008

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Abstract

In this paper we address estimation/control methods in complex networks where a global estimate (or decision) is obtained in a distributed fashion without fusion or centralized control centers. The suggested approach is based on local exchange of information among the nearby nodes within a connected (wireless) network that allows, under certain conditions, to reach a global decision based on locally available decisions/measurements. In particular, we consider network nodes as local dynamical systems with impulse-like coupling to establish time synchronization among the transmitted packets together with phase-coupling during packet durations to achieve distributed estimation/control. The suggested method may be used for distributed spectral sensing in cognitive radio and wireless sensor networks.