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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국정보통신학회JICCE Journal of information and communication convergence engineering Journal of information and communication convergence engineering Vol.14 No.1
- 발행연도
- 2016.3
- 수록면
- 1 - 8 (8page)
이용수
초록· 키워드
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Spectrum sensing in cognitive radio networks allows secondary users to sense the unused spectrum without causing interference to primary users. Cognitive radio requires more accurate sensing results from unused portions of the spectrum. Accurate spectrum sensing techniques can reduce the probability of false alarms and misdetection. In this paper, a two-stage spectrum sensing scheme is proposed for cooperative spectrum sensing in cognitive radio networks. In the first stage, spectrum sensing is executed for each secondary user using energy detection based on double adaptive thresholds to determine the spectrum condition. If the energy value lies between two thresholds, a fuzzy logic scheme is applied to determine the channel conditions more accurately. In the second stage, a fusion center combines the results of each secondary user and uses a fuzzy logic scheme for combining all decisions. The simulation results show that the proposed scheme provides increased sensing accuracy by about 20% in some cases.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. RELATED WORK
Ⅲ. PROPOSED SPECTRUM SENSING SCHEME
Ⅳ. SIMULATION RESULTS AND ANALYSIS
Ⅴ. CONCLUSION
REFERENCES
참고문헌 (17)
참고문헌 신청
I. F. Akyildiz, W. Y. Lee, M. C. Vuran, and S. Mohanty, “A survey on spectrum management in cognitive radio Networks,” IEEE Communications Magazine, vol. 46, no. 4, pp. 40-48, 2008.
R. Tandra and A. Sahai, “SNR walls for signal detection,” IEEE Journal of Selected Topics in Signal Processing, vol. 2, no. 1, pp. 4-17, 2008.
I. F. Akyildiz, B. F. Lo and R. Balakrishnan, “Cooperative spectrum sensing in cognitive radio networks: a survey,” Physical Communication, vol. 4, no. 1, pp. 40-62, 2011.
C. Sun, W. Zhang, and K. B. Letaief, “Cooperative spectrum sensing for cognitive radios under bandwidth constraints,” in Proceeding of IEEE Wireless Communications and Networking Conference, Hong Kong, pp. 1-5, 2007.
H. Urkowitz, “Energy detection of unknown deterministic signals,” Proceeding of IEEE, vol. 55, no. 4, pp. 523-531, 1967.
R. Tandra and A. Sahai, “SNR walls for signal detection,” IEEE Journal of Selected Topics in Signal Processing, vol. 2, no. 1, pp. 4-17, 2008.
I. F. Akyildiz, B. F. Lo and R. Balakrishnan, “Cooperative spectrum sensing in cognitive radio networks: a survey,” Physical Communication, vol. 4, no. 1, pp. 40-62, 2011.
C. Sun, W. Zhang, and K. B. Letaief, “Cooperative spectrum sensing for cognitive radios under bandwidth constraints,” in Proceeding of IEEE Wireless Communications and Networking Conference, Hong Kong, pp. 1-5, 2007.
H. Urkowitz, “Energy detection of unknown deterministic signals,” Proceeding of IEEE, vol. 55, no. 4, pp. 523-531, 1967.
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