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http://dx.doi.org/10.7236/JIIBC.2013.13.5.71

A Method Using Selection-Combining To Enhance Spectrum Sensing Performance  

Kong, Hyung-Yun (School of Electrical Engineering, University of Ulsan)
Tran, Truc Thanh (School of Electrical Engineering, University of Ulsan)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.13, no.5, 2013 , pp. 71-76 More about this Journal
Abstract
This paper considers an approach of secondary user selection method in cooperative spectrum sensing, which two users with the best SNR in sensing channel and in reporting channel, respectively, are selected to cooperate with each other in the spectrum sensing. The sensing results reported by two users are then combined to detect PU signal operation. A comparison between this proposed method with conventional selection technique in which only the user having the best sensing channel SNR is selected shows that the proposed method outperforms. We make an assumption that sensing channels experience identical, independent distributed (i.i.d) Rayleigh fading and the reporting channels are invariant and non-identical. Simulation results are derived for demonstration.
Keywords
cognitive radio; cooperative spectrum sensing; Rayleigh fading;
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