Sensing threshold control for fair coexistence of heterogeneous systems in open spectrum

Jemin Lee, Hano Wang, Sungtae Kim, Daesik Hong

Research output: Contribution to journalArticle

12 Citations (Scopus)


A critical problem in open-spectrum communications is fairness with respect to the coexistence of heterogeneous systems with different resource units and traffic models. In addition, the sensing performances of different systems can also lead to unfair resource utilization between systems. To address this problem, we derive a continuous-time Markov chain model to show the effect of sensing performance on system coexistence. The analysis derived from this model is then used as the basis for a sensing threshold control (STC) scheme to achieve fairness. The proposed STC determines the sensing threshold for each system as a way of balancing resource utilization among systems, while guaranteeing target detection probability. Numerical results on the amount of resource utilization by each system demonstrate that the proposed STC achieves a full degree of fairness.

Original languageEnglish
Article number5351692
Pages (from-to)5773-5778
Number of pages6
JournalIEEE Transactions on Wireless Communications
Issue number12
Publication statusPublished - 2009 Dec

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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