Distributed detection over gaussian multiple access channels with constant modulus signaling

Cihan Tepedelenlioglu, Sivaraman Dasarathan

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

A distributed detection scheme where the sensors transmit with constant modulus signals over a Gaussian multiple access channel is considered. The deflection coefficient of the proposed scheme is shown to depend on the characteristic function of the sensing noise and the error exponent for the system is derived using large deviation theory. Optimization of the deflection coefficient and error exponent are considered with respect to a transmission phase parameter for a variety of sensing noise distributions including impulsive ones. The proposed scheme is also favorably compared with existing amplify-and-forward and detect-and-forward schemes. The effect of fading is shown to be detrimental to the detection performance through a reduction in the deflection coefficient depending on the fading statistics. Simulations corroborate that the deflection coefficient and error exponent can be effectively used to optimize the error probability for a wide variety of sensing noise distributions.

Original languageEnglish (US)
Article number5722050
Pages (from-to)2875-2886
Number of pages12
JournalIEEE Transactions on Signal Processing
Volume59
Issue number6
DOIs
StatePublished - Jun 1 2011

Keywords

  • Constant modulus
  • deflection coefficient
  • distributed detection
  • error exponent
  • multiple access channel

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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