Detection performance limits of channel impaired distributed sensor networks

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Traditional parallel distributed detection systems assume perfect channels between local sensors and a fusion center. However, for the emerging wireless sensor networks with inexpensive sensors and stringent power/delay constraints, error-free transmission is not guaranteed. In this paper, we study the performance degradation due to imperfect channels between the sensors and the fusion center under both asymptotic and non-asymptotic regimes. For asymptotic analysis, we compute the error exponents of the underlying hypothesis testing problem in the presence of discrete transmission channels; while for cases with a finite number of sensors, we determine channel conditions under which the distributed detection systems become useless -observing the channel output might not help in reducing the error probability performance at the fusion center. Numerical examples are provided to illustrate the concepts.

Original languageEnglish (US)
Pages (from-to)2213-2217
Number of pages5
JournalConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2
StatePublished - Dec 1 2004
EventConference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States
Duration: Nov 7 2004Nov 10 2004

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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