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A Spectrum Sensing Scheme with Unknown Deterministic Signal Environment  

Kim, Jeong-Hoon (인하대학교 정보통신대학원)
Asif, Iqbal (인하대학교 정보통신대학원)
Khuandaga, Gulmira (인하대학교 정보통신공학부)
Kwak, Kyung-Sup (인하대학교 정보통신공학부, 인하대학교 초광대역무선통신연구센터)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.10, no.3, 2011 , pp. 85-94 More about this Journal
Abstract
Spectrum sensing is one of the most important technologies in cognitive radio. Although many studies have considered energy detection technique as the spectrum sensing technique, noise variance in practical systems is difficult to estimate accurately. Thus, in the real system, the probability of false alarm will not be maintained constant. In this paper, with considering that the cognitive radio does not know the primary user's signal, we propose a new spectrum sensing scheme which can operate without the information of noise variance. Through simulations, we show that the proposed scheme can detect spectrum with the condition of unknown noise information and have robustness for the change of noise variance.
Keywords
Spectrum sensing; cognitive radio; energy detection; noise variance; unknown deterministic signal;
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Times Cited By KSCI : 1  (Citation Analysis)
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