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Effective Cooperative FFT based pilot Sensing Scheme for Detecting DTV Signals in Cognitive Radio  

Lee, So-Young (광운대학교 전파공학과)
Kim, Eun-Cheol (광운대학교 전파공학과)
Kim, Jin-Young (광운대학교 전파공학과)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.9, no.1, 2010 , pp. 27-33 More about this Journal
Abstract
Cognitive radio (CR), which is proposed as a technology that utilizes the frequency resources effectively, has been studied to relive scarcity of the frequency resources. Also, FCC revises the regulation to reuse the TV white spaces for applying CR system and allows to use the TV white spaces by CR devices and use of CR device may be regularized after conversion by DTV in 2009. In order to reuse the TV bands without harmful interference to primary user, correct spectrum sensing should be needed to detect DTV signals that is the primary user in TV bands. In this paper, we detect the DTV signal using FFT-based pilot sensing and cooperative sensing scheme is applied for the reliability of the sensing performance and the accuracy of the detection probability. Also, in order to make the reliable decision, the majority rule is proposed.
Keywords
Cognitive radio; DTV; spectrum sensing; FFT-based pilot sensing; cooperative sensing; majority rule;
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