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

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

32 Citations (Scopus)

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 publicationProceedings - IEEE INFOCOM
Pages2976-2980
Number of pages5
DOIs
StatePublished - 2009
Event28th Conference on Computer Communications, IEEE INFOCOM 2009 - Rio de Janeiro, Brazil
Duration: Apr 19 2009Apr 25 2009

Other

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

Fingerprint

Cognitive radio
Polynomials

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

Cite this

Coordinated channel access in cognitive radio networks : A multi-level spectrum opportunity perspective. / Shu, Tao; Krunz, Marwan M.

Proceedings - IEEE INFOCOM. 2009. p. 2976-2980 5062270.

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

Shu, T & Krunz, MM 2009, Coordinated channel access in cognitive radio networks: A multi-level spectrum opportunity perspective. in Proceedings - IEEE INFOCOM., 5062270, pp. 2976-2980, 28th Conference on Computer Communications, IEEE INFOCOM 2009, Rio de Janeiro, Brazil, 4/19/09. https://doi.org/10.1109/INFCOM.2009.5062270
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