Cooperation vs. Hierarchy: An information-theoretic comparison

Lalitha Sankaranarayanan, Gerhard Kramer, Narayan B. Mandayam

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


The performance of source-cooperation in a multiaccess network is compared to that of using a wireless relay. The former network is modeled as a multi-access channel with generalized feedback and the latter as a multi-access relay channel. Using power as the cost metric, achievable rates and outage probabilities for the two networks are compared under a total transmit power constraint and a specified geometry. The use of a relay is shown to be advantageous for a variety of wireless fading channels.

Original languageEnglish (US)
Article number1523366
JournalIEEE International Symposium on Information Theory - Proceedings
StatePublished - 2005
Externally publishedYes
Event2005 IEEE International Symposium on Information Theory, ISIT 05 - Adelaide, Australia
Duration: Sep 4 2005Sep 9 2005

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Information Systems
  • Modeling and Simulation
  • Applied Mathematics


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