Browse > Article
http://dx.doi.org/10.5370/KIEE.2012.61.2.321

Sensing Period Adaptation using the Cost Function in the Cognitive Radio Networks  

Gao, Xiang (한국기술교육대학교 전기전자통신공학부)
Park, Hyung-Kun (한국기술교육대학교 전기전자통신공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.2, 2012 , pp. 321-323 More about this Journal
Abstract
Cognitive radio has been recently proposed to dynamically access unused-spectrum. Since the spectrum availability for opportunistic access is determined by spectrum sensing, sensing is identified as one of the most crucial issues of cognitive radio networks. The PHY-layer sensing, as a part of spectrum sensing in cognitive radio, concerns the sensing mechanism to determine channel to be sensed and to access. One of the important issues in the PHY-layer sensing control is to find an available sensing period and trade-off between spectrum sensing and data transmission. In this paper, we show the relationship between spectrum sensing and data transmission according to the sensing period. We analyze and propose the new scheme to evaluate optimal sensing period.
Keywords
Cognitive radio; PHY-layer sensing; Sensing control; In-band-sensing; Optimal sensing period;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 J. Mitola, G.Q. Maguire, "Cognitive radio: making software radios more personal", IEEE Personal Communications, vol. 6, no. 4, pp. 13-18, Aug. 1999.   DOI   ScienceOn
2 S. Haykin, "Cognitive radio: Brain-empowered wireless communication", IEEE J. Selected Areas in Communications, vol. 23, no.2, pp.201-220, Feb. 2005.   DOI   ScienceOn
3 H. Kim, K.G. Shin, "Efficient discovery of spectrum opportunities with MAC-layer sensing in cognitive radio networks", IEEE transaction on Mobile Computing,vol. 7, no. 5, pp. 533-545, 2008.   DOI   ScienceOn
4 I. F. Akyildiz, W.-Y. Lee, and K. R. Chowdhury, "CRAHNs: Cognitive radio ad hoc networks," Ad Hoc Networks, vol. 7, no. 5, pp. 810 - 836, 2009.   DOI   ScienceOn
5 H. Urkowitz, "Energy detection of unknown deterministic signals", in Proceeding of IEEE 1967, vol.55, pp.523-531, Apr. 1967.