Dynamic bandwidth allocation for target tracking in wireless sensor networks

Engin Masazade, Ruixin Niu, Pramod K. Varshney

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

3 Scopus citations

Abstract

In this paper, we study the dynamic bandwidth allocation problem for target tracking based on quantized sensor data in wireless sensor networks. At each time step, the fusion center distributes the available bandwidth among the sensors in such a way that the posterior Cramér-Rao lower bound (PCRLB) on the mean squared error (MSE) is minimized. Since the optimal solution requires a combinatorial search, we seek computationally efficient suboptimal methods for dynamic bandwidth allocation. In order to minimize the estimation error, our objective is to maximize the determinant of the Fisher information matrix (FIM) subject to the total rate constraint. To maximize the determinant of the FIM, we formulate an approximate dynamic programming (A-DP) algorithm and compare its performance with other suboptimal methods, including the generalized Breiman, Friedman, Olshen, and Stone (GBFOS) algorithm and the greedy search. A-DP is computationally more efficient than the GBFOS and simulation results show that A-DP and GBFOS algorithms yield similar tracking performance in terms of the mean squared error and outperform the greedy search.

Original languageEnglish (US)
Title of host publicationFusion 2011 - 14th International Conference on Information Fusion
StatePublished - Sep 13 2011
Event14th International Conference on Information Fusion, Fusion 2011 - Chicago, IL, United States
Duration: Jul 5 2011Jul 8 2011

Publication series

NameFusion 2011 - 14th International Conference on Information Fusion

Other

Other14th International Conference on Information Fusion, Fusion 2011
CountryUnited States
CityChicago, IL
Period7/5/117/8/11

Keywords

  • Dynamic bandwidth allocation
  • Target tracking
  • Wireless sensor networks

ASJC Scopus subject areas

  • Information Systems

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  • Cite this

    Masazade, E., Niu, R., & Varshney, P. K. (2011). Dynamic bandwidth allocation for target tracking in wireless sensor networks. In Fusion 2011 - 14th International Conference on Information Fusion [5977502] (Fusion 2011 - 14th International Conference on Information Fusion).