Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Does Analog Transmission Achieve OPTA in an Asymmetric Gaussian Sensor Network ?
 

Summary: Does Analog Transmission Achieve OPTA in an
Asymmetric Gaussian Sensor Network ?
Hamid Behroozi, Fady Alajaji and Tamás Linder
Department of Mathematics and Statistics, Queen's University, Kingston, Ontario, Canada, K7L 3N6
Email: {behroozi, fady, linder}@mast.queensu.ca
Abstract-- We consider the estimation of a Gaussian source by
a Gaussian sensor network where L distributed sensors transmit
noisy observations of the source through a Gaussian multiple
access channel to a fusion center. In a recent work, Gastpar
showed that for a symmetric sensor network with no fading,
analog (uncoded) transmission achieves the optimal performance
theoretically attainable (OPTA). In this work, by comparing lower
and upper bounds on the OPTA, we provide optimality condi-
tions for analog transmission in an asymmetric Gaussian sensor
network with deterministic fading. We also obtain an optimal
power allocation scheme to minimize the mean-squared error
distortion given a linear combination of powers (LCP) constraint.
We determine optimality conditions for analog transmission under
an LCP constraint, which includes the sum-power constraint as a
special case.

  

Source: Alajaji, Fady - Department of Mathematics and Statistics, Queen's University (Kingston)
Linder, Tamás - Department of Mathematics and Statistics, Queen's University (Kingston)

 

Collections: Engineering