Distortion exponent in MIMO channels with feedback

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


The transmission of a Gaussian source over a blockfading multiple antenna channel in the presence of a feedback link is considered. The feedback link is assumed to be an error and delay free link of capacity 1 bit per channel use. Under the short-term power constraint, the optimal exponential behavior of the end-to-end average distortion is characterized for all source-channel bandwidth ratios. It is shown that the optimal transmission strategy is successive refinement source coding followed by progressive transmission over the channel, in which the channel block is allocated dynamically among the layers based on the channel state using the feedback link as an instantaneous automatic repeat request (ARQ) signal.

Original languageEnglish (US)
Title of host publication2009 IEEE Information Theory Workshop, ITW 2009
Number of pages5
StatePublished - Dec 7 2009
Event2009 IEEE Information Theory Workshop, ITW 2009 - Taormina, Sicily, Italy
Duration: Oct 11 2009Oct 16 2009

Publication series

Name2009 IEEE Information Theory Workshop, ITW 2009


Other2009 IEEE Information Theory Workshop, ITW 2009
CityTaormina, Sicily

All Science Journal Classification (ASJC) codes

  • Computational Theory and Mathematics
  • Computer Networks and Communications
  • Information Systems
  • Electrical and Electronic Engineering


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