Distributed Adaptive Norm Estimation for Blind System Identification in Wireless Sensor Networks

M. Blochberger, F. Elvander, R. Ali, J. Østergaard, J. Jensen, M. Moonen, T.van Waterschoot

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Distributed signal-processing algorithms in (wireless) sensor networks often aim to decentralize processing tasks to reduce communication cost and computational complexity or avoid reliance on a single device (i.e., fusion center) for processing. In this contribution, we extend a distributed adaptive algorithm for blind system identification that relies on the estimation of a stacked network-wide consensus vector at each node, the computation of which requires either broadcasting or relaying of node-specific values (i.e., local vector norms) to all other nodes. The extended algorithm employs a distributed-averaging-based scheme to estimate the network-wide consensus norm value by only using the local vector norm provided by neighboring sensor nodes. We introduce an adaptive mixing factor between instantaneous and recursive estimates of these norms for adaptivity in a time-varying system. Simulation results show that the extension provides estimation results close to the optimal fully-connected-network or broadcasting case while reducing inter-node transmission significantly.
Original languageEnglish
Title of host publicationICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Print)978-1-7281-6328-4
DOIs
Publication statusPublished - 10 Jun 2023
MoE publication typeA4 Conference publication
EventIEEE International Conference on Acoustics, Speech, and Signal Processing - Rhodes Island, Greece
Duration: 4 Jun 202310 Jun 2023

Publication series

NameProceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing
ISSN (Electronic)2379-190X

Conference

ConferenceIEEE International Conference on Acoustics, Speech, and Signal Processing
Abbreviated titleICASSP
Country/TerritoryGreece
CityRhodes Island
Period04/06/202310/06/2023

Keywords

  • Wireless sensor networks
  • Adaptive systems
  • Estimation
  • Signal processing algorithms
  • Channel estimation
  • Broadcasting
  • System identification

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