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Optimum number of secondary users in cooperative spectrum sensing using adaptive threshold
- Na, Hanbyeul;
- Kim, Sunwoo
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5초록
Cognitive radio is an emerging technology for efficient use of limited spectrum resources. Recently, cooperative spectrum sensing method has been proposed to overcome shadowing and fading of wireless channels. In this paper, we investigate optimum number of secondary users in cooperative spectrum sensing using adaptive threshold. Each secondary user calculates optimized threshold based on distance between primary user and each secondary user. By considering detection performance and efficiency, we derive optimum number of users in cooperative spectrum sensing. Through analysis and simulation, it is shown that cooperative spectrum sensing performance is improved under the proposed scheme as opposed to the conventional scheme.
키워드
Cognitive radio; Cooperative spectrum sensing; Optimization; Adaptive thresholds; Analysis and simulation; Cognitive radio; Conventional schemes; Cooperative spectrum sensing; Detection performance; Emerging technologies; Limited spectrum; Optimum number; Wireless channel; Fading (radio); Fading channels; Optimization; Radio
- 제목
- Optimum number of secondary users in cooperative spectrum sensing using adaptive threshold
- 저자
- Na, Hanbyeul; Kim, Sunwoo
- 발행일
- 2010-12
- 유형
- Conference Paper
- 저널명
- Proceedings - 2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010
- 페이지
- 52 ~ 56