Spectrum sharing in cognitive radio networks

Fan Wang, Marwan Krunz, Shuguang Cui

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

49 Scopus citations


In this paper, we present a novel joint power/channel allocation scheme that uses a distributed pricing strategy to improve the network's performance According to this scheme, the spectrum allocation problem is modeled as a non-cooperative game. A price-based iterative water-filling (PIWF) algorithm is proposed, which allows users to converge to the Nash Equilibrium (NE). This PIWF algorithm can be implemented distributively, with CRs repeatedly negotiating their best transmission powers and spectrum. We propose a protocol that implements our pricebased resource allocation algorithm. The proposed MAC protocol allows multiple CR pairs to first contend through an admission phase, and then to iteratively negotiate their transmission powers and spectrum via control-packet exchanges. Subsequently, CRs proceed concurrently with their data transmissions. Simulations are used to study the performance of our protocol and demonstrate its effectiveness in improving the overall network throughput and reducing the average transmission power.

Original languageEnglish (US)
Title of host publicationINFOCOM 2008
Subtitle of host publication27th IEEE Communications Society Conference on Computer Communications
Number of pages5
StatePublished - 2008
EventINFOCOM 2008: 27th IEEE Communications Society Conference on Computer Communications - Phoenix, AZ, United States
Duration: Apr 13 2008Apr 18 2008

Publication series

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


OtherINFOCOM 2008: 27th IEEE Communications Society Conference on Computer Communications
Country/TerritoryUnited States
CityPhoenix, AZ

ASJC Scopus subject areas

  • General Computer Science
  • Electrical and Electronic Engineering


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