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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국정보처리학회 JIPS(Journal of Information Processing Systems) JIPS(Journal of Information Processing Systems) 제15권 제3호
- 발행연도
- 2019.1
- 수록면
- 604 - 615 (12page)
이용수
초록· 키워드
오류제보하기
Single-user spectrum sensing is susceptible to multipath effects, shadow effects, hidden terminals and otherunfavorable factors, leading to misjudgment of perceived results. In order to increase the detection accuracyand reduce spectrum sensing cost, we propose an adaptive cooperative sensing strategy based on an estimatedsignal-to-noise ratio (SNR). Which can adaptive select different sensing strategy during the local sensing phase. When the estimated SNR is higher than the selection threshold, adaptive double threshold energy detector (ED)is implemented, otherwise cyclostationary feature detector is performed. Due to the fact that only a bettersensing strategy is implemented in a period, the detection accuracy is improved under the condition of low SNRwith low complexity. The local sensing node transmits the perceived results through the control channel to thefusion center (FC), and uses voting rule to make the hard decision. Thus the transmission bandwidth iseffectively saved. Simulation results show that the proposed scheme can effectively improve the systemdetection probability, shorten the average sensing time, and has better robustness without largely increasingthe costs of sensing system.
목차
등록된 정보가 없습니다.
참고문헌 (16)
참고문헌 신청
S. Haykin / 2005 / Cognitive radio : brain-empowered wireless communications / IEEE Journal on Selected Areas in Communications 23(2):201~220
L. Ma / 2010 / Game-theoretic spectrum sharing for cognitive radio based on the expectation of primary users / The Journal of China Universities of Posts and Telecommunications 17(3):6~12
K. Srisomboon / 2016 / Adaptive two-stage spectrum sensing under noise uncertainty in cognitive radio networks / ECTI Transactions on Electrical Engineering, Electronics, and Communications 14(1):21~35
S. P. NI / 2017 / Double-threshold joint spectrum sensing based on energy and wavelet transform / Journal of Beijing University of Posts and Telecommunications 40(4):46~50
A. Bhowmick / 2015 / Double threshold-based cooperative spectrum sensing for a cognitive radio network with improved energy detectors / IET Communications 9(18):2216~2226
L. Ma / 2010 / Game-theoretic spectrum sharing for cognitive radio based on the expectation of primary users / The Journal of China Universities of Posts and Telecommunications 17(3):6~12
K. Srisomboon / 2016 / Adaptive two-stage spectrum sensing under noise uncertainty in cognitive radio networks / ECTI Transactions on Electrical Engineering, Electronics, and Communications 14(1):21~35
S. P. NI / 2017 / Double-threshold joint spectrum sensing based on energy and wavelet transform / Journal of Beijing University of Posts and Telecommunications 40(4):46~50
A. Bhowmick / 2015 / Double threshold-based cooperative spectrum sensing for a cognitive radio network with improved energy detectors / IET Communications 9(18):2216~2226
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