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A Method Using Selection-Combining To Enhance Spectrum Sensing Performance

스펙트럼 센싱 성능 향상을 위한 선택적 결합 사용 방법

  • 공형윤 (울산대학교 전기전자정보시스템공학부) ;
  • Received : 2013.09.04
  • Accepted : 2013.10.11
  • Published : 2013.10.31

Abstract

This paper considers an approach of secondary user selection method in cooperative spectrum sensing, which two users with the best SNR in sensing channel and in reporting channel, respectively, are selected to cooperate with each other in the spectrum sensing. The sensing results reported by two users are then combined to detect PU signal operation. A comparison between this proposed method with conventional selection technique in which only the user having the best sensing channel SNR is selected shows that the proposed method outperforms. We make an assumption that sensing channels experience identical, independent distributed (i.i.d) Rayleigh fading and the reporting channels are invariant and non-identical. Simulation results are derived for demonstration.

본 논문에선, 스펙트럼 센싱 과정에서 서로 협력적으로 선택되고, 보고된(reporting) 채널과 감지된 채널에서 최상의 SNR을 가진 두 사용자의 협력적 스펙트럼 센싱에 대한 2차 사용자의 선택 방법에 대한 연구를 한다. 감지결과 두 사용자는 첫 번째 사용자 신호의 동작을 검출하기 위해 결합되며, 사용자는 최상의 SNR 채널을 감지해서 기존의 선택 기법과 제안된 방식을 비교한다. 감지 채널들을 I.I.D 레일리 페이딩 채널, 보고된(reporting) 채널은 invariant, non-identical로 가정한다. 시뮬레이션을 통해 제안한 내용을 검증한다.

Keywords

References

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