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An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio
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  • An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio
  • An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio
저자명
황효가,한저,정관파,손성환,김재명,Huang. Xiaoge,Han. Ning,Zheng. Guanbo,Sohn. Sung-Hwan,Kim. Jae-Moung
간행물명
한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신
권/호정보
2007년|32권 |pp.984-991 (8 pages)
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한국통신학회
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정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Cognitive Radio is an advanced enabling techlology for efficient utilization of under-utilized spectrum since it is able to sense the temporally available spectrum and adapt its parameters to fully utilize the frequency band. Recent investigation suggests that spectrum sensing is compromised when a cognitive radio user suffers from the environment with fading or shadowing. In order to combat the effect, collaborative sensing is considered to be a promising way, which combines the sensing result of each user to achieve good performance. However, the conventional collaborative sensing is not efficient when users suffer different fading environments. In this paper, we propose a weighted-collaborative scheme that considers using the weights of each collaborative CR user, which can achieve better sensing performance under both fast and slow fading environments. The analysis of the simulation resultsproves that the weighted-collaborative scheme improves sensing performance obviously and outperforms the conventional method.