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IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 12, DECEMBER 2011 3335 On the Performance of
 

Summary: IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 12, DECEMBER 2011 3335
On the Performance of
Hybrid Digital-Analog Coding for
Broadcasting Correlated Gaussian Sources
Hamid Behroozi, Member, IEEE, Fady Alajaji, Senior Member, IEEE, and Tamás Linder, Senior Member, IEEE
Abstract--We consider the problem of sending a bivariate
Gaussian source = (1, 2) across a power-limited two-user
Gaussian broadcast channel. User ( = 1, 2) observes the
transmitted signal corrupted by Gaussian noise with power
2
and desires to estimate . We study hybrid digital-analog
(HDA) joint source-channel coding schemes and analyze the
region of (squared-error) distortion pairs that are simultaneously
achievable. Two cases are considered: 1) broadcasting with
bandwidth compression, and 2) broadcasting with bandwidth
expansion. We modify and adapt HDA schemes of Wilson et
al. [1] and Prabhakaran et al. [2], originally proposed for
broadcasting a single common Gaussian source, in order to
provide achievable distortion regions for broadcasting correlated
Gaussian sources. For comparison, we also extend the outer

  

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