Coordinated channel access in cognitive radio networks: A multi-level spectrum opportunity perspective

Tao Shu, Marwan Krunz

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

32 Scopus citations

Abstract

In a cognitive radio network (CRN), spectrum opportunities should be efficiently utilized through careful coordination between cognitive radio (CR) users. In this paper, we formulate the coordinated channel access as a joint power/rate control and channel assignment optimization problem, with the objective of maximizing the sum-rate achieved by all CRs over all channels. The problem is formulated under a generalized multi-level spectrum opportunity framework, which reflects the microscopic spatial opportunity available to CRs. A centralized polynomial-time approximate algorithm to the problem is developed. We prove the algorithm's correctness and show its accuracy through numerical examples.

Original languageEnglish (US)
Title of host publicationIEEE INFOCOM 2009 - The 28th Conference on Computer Communications
Pages2976-2980
Number of pages5
DOIs
StatePublished - Oct 12 2009
Event28th Conference on Computer Communications, IEEE INFOCOM 2009 - Rio de Janeiro, Brazil
Duration: Apr 19 2009Apr 25 2009

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X

Other

Other28th Conference on Computer Communications, IEEE INFOCOM 2009
CountryBrazil
CityRio de Janeiro
Period4/19/094/25/09

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

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    Shu, T., & Krunz, M. (2009). Coordinated channel access in cognitive radio networks: A multi-level spectrum opportunity perspective. In IEEE INFOCOM 2009 - The 28th Conference on Computer Communications (pp. 2976-2980). [5062270] (Proceedings - IEEE INFOCOM). https://doi.org/10.1109/INFCOM.2009.5062270