The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Sensing Period Adaptation using the Cost Function in the Cognitive Radio Networks

인지 무선 네트워크에서 시스템 비용함수를 이용한 적응적 센싱주기

  • 고상 (한국기술교육대학교 전기전자통신공학부) ;
  • 박형근 (한국기술교육대학교 전기전자통신공학부)
  • Received : 2011.12.19
  • Accepted : 2012.01.25
  • Published : 2012.02.01
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Abstract

Cognitive radio has been recently proposed to dynamically access unused-spectrum. Since the spectrum availability for opportunistic access is determined by spectrum sensing, sensing is identified as one of the most crucial issues of cognitive radio networks. The PHY-layer sensing, as a part of spectrum sensing in cognitive radio, concerns the sensing mechanism to determine channel to be sensed and to access. One of the important issues in the PHY-layer sensing control is to find an available sensing period and trade-off between spectrum sensing and data transmission. In this paper, we show the relationship between spectrum sensing and data transmission according to the sensing period. We analyze and propose the new scheme to evaluate optimal sensing period.

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References

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