Source Broadcasting and Asymmetric Data Transmission with Bandwidth Expansion

Shraga I. Bross, Hagai Zalach

Research output: Contribution to journalArticlepeer-review


We consider the broadcasting of a scalar memoryless Gaussian source over a two-user Gaussian broadcast channel with bandwidth expansion. In concurrent with the source description, a message that should be decoded reliably just by the 'higher quality' user is sent. Conditioned on the message rate, we derive a necessary condition for the achievability of a mean-squared-error distortion pair at the two receivers, which extends the Reznic-Feder-Zamir bound. This necessary condition and a sufficient condition that we derive establish the set of achievable energy-distortion exponents for this setting.

Original languageEnglish
Article number8751988
Pages (from-to)6698-6710
Number of pages13
JournalIEEE Transactions on Communications
Issue number10
StatePublished - Oct 2019

Bibliographical note

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  • Gaussian broadcast channel
  • asymmetric data transmission
  • joint source-channel coding
  • source broadcasting


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