A Novel Spectrum Sensing Scheme for the Cognitive Radio under Impulsive Noise Circumstances

S.R. Lee, Y. Han, H.G. Kang, I. Song, T. An, and J.H. Lee (Korea)

Keywords

Cognitive radio, spectrum sensing, receive diversity, impulsive noise

Abstract

In the study in [1], a novel spectrum sensing scheme has been proposed and the performance characteristics of the proposed scheme have been analyzed in Gaussian noise environment. The test statistic of the proposed scheme is the sum of one or more order statistics of the log-likelihood ratios obtained at the branches of a receiver. In this paper, the performance characteristics of the proposed scheme are addressed in impulsive noise environment. It is demonstrated that the proposed scheme provides signi´Čücant performance gain and higher level of performance stability over the conventional schemes in non-Gaussian impulsive noise environment.

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