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Broadcasting Correlated Gaussian Sources with Bandwidth Expansion
 

Summary: Broadcasting Correlated Gaussian Sources
with Bandwidth Expansion
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 study hybrid digital-analog (HDA) joint source-
channel coding schemes for the transmission of a bivariate Gaus-
sian source S = (S1, S2) across a power-limited two-user Gaussian
broadcast channel. User i (i = 1, 2) observes the transmitted signal
corrupted by Gaussian noise with power 2
i and wants to estimate
the ith component of the source, Si. We consider HDA coding
schemes with bandwidth expansion and analyze the region of
(squared-error) distortion pairs that are simultaneously achievable.
We first adapt an HDA scheme proposed by Reznic, Feder and
Zamir in [1] for broadcasting a single common source and use
it to provide an achievable distortion region for broadcasting
correlated sources. We also consider a three-layered coding scheme,
which we refer to by the HWZ scheme, and which consists of an
analog layer and two layers each consisting of a Wyner-Ziv coder

  

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