상세정보
학술지
An Efficient Quiet Period Management Scheme for Cognitive Radio Systems
- 발행일
- 200802
- 출처
- IEEE Transactions on Wireless Communications, v.7 no.2, pp.505-509
- ISSN
- 1536-1276
- 출판사
- IEEE
- 협약과제
- 06MR1200, 스펙트럼 사용효율개선을 위한 Cognitive radio 기술 개발, 송명선
- 초록
- In cognitive radio (CR) systems, the channel sensing scheme for detecting the presence of primary user directly affects the quality-of-service of CR users and primary user. In this letter, we propose a sensing scheme that consists of a series of consecutive energy detections followed by feature detection, where the energy detection time is much shorter than the feature detection time. With the proposed scheme, multiple energy detections decrease the feature detection due to false alarm and the overall channel sensing time. The performance evaluation using Markov analysis shows that the proposed scheme can heighten the maximum channel utilization of CR users, while maintaining the detection delay of primary user under a predefined value. © 2008 IEEE.
- KSP 제안 키워드
- Channel Utilization, Channel sensing, Cognitive Radio System, Detection delay, Energy Detection, False Alarm, Markov analysis, Performance evaluation, Quiet period, Sensing scheme, cognitive radio(CR)