The cognitive radio channel: From spectrum sensing to message cribbing

Yi Cao, Biao Chen

Research output: Chapter in Book/Entry/PoemConference contribution

1 Scopus citations


Cognitive radios have been considered as an enabling technology toward resolving the spectrum scarcity through spectrum reuse facilitated by the cognitive capability of secondary users. Recent studies, however, have gone beyond spectrum sensing at the medium access control layer; it was conceived to have cognitive radios that are capable of extract information pertaining to the physical layer from the primary users to enable coexistence of multiple users. We take upon this newly proposed approach but refrain from imposing the unrealistic assumption of non-causal cooperation. Specifically, we study the so-called cognitive radio channels from the message cribbing perspective where the term 'cognitive' capability is strictly causal. Information theoretic performance bounds are obtained which shed lights on the impact of such causal cognitive capability.

Original languageEnglish (US)
Title of host publicationAd Hoc Networks - First International Conference, ADHOCNETS 2009, Revised Selected Papers
Number of pages16
StatePublished - 2010
Event1st International Conference on Ad Hoc Networks, ADHOCNETS 2009 - Niagara Falls, ON, Canada
Duration: Sep 22 2009Sep 25 2009

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
Volume28 LNICST
ISSN (Print)1867-8211


Other1st International Conference on Ad Hoc Networks, ADHOCNETS 2009
CityNiagara Falls, ON


  • Channel capacity
  • Cognitive radio channel
  • Interference channel
  • Message cribbing

ASJC Scopus subject areas

  • Computer Networks and Communications


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