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A Real Time Sensing Through The Eigenvalue Detection in Cognitive Radio  

Sohn, Sung-Hwan (INHA-WiTLAB, Graduate School of IT & Telecommunication)
Jang, Sung-Jeen (INHA-WiTLAB, Graduate School of IT & Telecommunication)
Kim, Jae-Moung (INHA-WiTLAB, Graduate School of IT & Telecommunication)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.3, 2010 , pp. 1-7 More about this Journal
Abstract
Cognitive Radio, which adaptively utilizes the vacant licensed spectrum band, is considered as an effective way to alleviate the scarcity of spectrum resource shortage. In order to guarantee the non-interference transmission of primary system, spectrum sensing, especially in quiet period, is proposed. However, it is insufficient to avoid the unacceptable interference caused by Cognitive Radios, because the primary user may appear anytime that is unpredictable. In this paper, we address the deficiency of conventional spectrum sensing and propose a novel Cognitive Radio receiver structure with monitoring function block to detect the appearance of primary user in a real-time manner. Simulations prove that the proposed eigenvalue based detection method together with the two-threshold decision procedure performs properly.
Keywords
Spectrum Sensing; Eigenvalue Detection; Cognitive Radio;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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