Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Performance Analysis of an Energy Detection Based Cooperative Spectrum Sensing with Double Thresholds in the Presence of Noise Uncertainty

잡음 전력의 불확실성이 존재하는 환경에서 이중 임계값을 사용하는 에너지 검파 기반 협력 스펙트럼 감지의 성능 분석

  • Lim, Chang Heon (Department of Electronic Engineering, Pukyong National University)
  • 임창헌 (부경대학교 전자공학과)
  • Received : 2012.10.17
  • Published : 2013.01.25
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Abstract

An energy detection based spectrum sensing is widely known to be susceptible to the noise power uncertainty. As one of the methods to resolve this problem, a cooperative spectrum sensing based on an energy detector with double thresholds has been published recently. However, its performance analysis under a fading channel has not been carried out yet. In this paper, we present a closed form of performance analysis of the scheme by extending our previous work on evaluating the performance of an energy detector in the presence of noise power uncertainty.

일반적으로 에너지 검파 기반 스펙트럼 감지 방식은 잡음 전력에 대한 불확실성에 취약한 것으로 알려져 있다. 이러한 문제점을 해결하기 방안 중의 하나로 이중 임계값을 사용하는 에너지 검파 기반 협력 스펙트럼 감지 방식이 제안된 바 있다. 그러나 아직까지 페이딩 채널 환경에서 이 방식에 대한 성능 분석이 수행된 바 없다. 본 논문에서는 에너지 검파 기반 스펙트럼감지 방식에 대한 이전 연구 결과를 활용하여 에너지 검파 기반 협력 스펙트럼 감지 방식에 대한 닫힌 형태의 수학적 분석 결과를 제시하고자 한다.

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