An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio 


Vol. 32,  No. 10, pp. 984-991, Oct.  2007


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  Abstract

Cognitive Radio is an advanced enabling technology for efficient utilization of under-utilized spectrum since it is able to sense the temporally available spectrum and adapt its parameters to fully utilize the frequency band. Recent investigation suggests that spectrum sensing is compromised when a cognitive radio user suffers from the environment with fading or shadowing. In order to combat the effect, collaborative sensing is considered to be a promising way, which combines the sensing result of each user to achieve good performance. However, the conventional collaborative sensing is not efficient when users suffer different fading environments. In this paper, we propose a weighted-collaborative scheme that considers using the weights of each collaborative CR user, which can achieve better sensing performance under both fast and slow fading environments. The analysis of the simulation resultsproves that the weighted-collaborative scheme improves sensing performance obviously and outperforms the conventional method.

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  Cite this article

[IEEE Style]

X. Huang, N. Han, G. Zheng, S. Sohn, J. Kim, "An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 10, pp. 984-991, 2007. DOI: .

[ACM Style]

Xiaoge Huang, Ning Han, Guanbo Zheng, Sunghwan Sohn, and Jaemoung Kim. 2007. An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio. The Journal of Korean Institute of Communications and Information Sciences, 32, 10, (2007), 984-991. DOI: .

[KICS Style]

Xiaoge Huang, Ning Han, Guanbo Zheng, Sunghwan Sohn, Jaemoung Kim, "An Efficient Weighted-Collaborative Sensing Scheme in Cognitive Radio," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 10, pp. 984-991, 10. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880