Pulse-coupled distributed PLLs in heterogeneous wireless networks

O. Simeone, G. Scutari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Decentralized time synchronization in ad hoc or sensor networks can be conveniently achieved via pulse-coupled discrete-time phase locked loops (PLLs). Previous work has characterized (frequency or phase) synchronous states and convergence conditions for homogeneous networks where all the nodes have the same power constraints. In this paper, we build on recent results on algebraic graph theory for generally nonbidirectional graphs, and address the asymptotic behavior of pulse-coupled PLLs in heterogeneous networks. We first derive necessary and sufficient conditions for global synchronization of the network. Then, we provide closed form expressions for the asymptotic frequency and phases, as a function of the network topology.

Original languageEnglish (US)
Title of host publicationConference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Pages1770-1775
Number of pages6
DOIs
StatePublished - Dec 1 2007
Event41st Asilomar Conference on Signals, Systems and Computers, ACSSC - Pacific Grove, CA, United States
Duration: Nov 4 2007Nov 7 2007

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other41st Asilomar Conference on Signals, Systems and Computers, ACSSC
CountryUnited States
CityPacific Grove, CA
Period11/4/0711/7/07

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications

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