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Signal Detection of Cognitive Radio System for 3G LTE Mobile Communication System  

Kim, Seung-Jong (광운대학교 전파공학과 유비쿼터스 통신 연구실)
Kim, Jin-Young (광운대학교 전파공학과 유비쿼터스 통신 연구실)
Publication Information
Journal of Satellite, Information and Communications / v.5, no.1, 2010 , pp. 27-31 More about this Journal
Abstract
Recently, spectrum requirements are rapidly increasing in accordance with wireless communication development. For this reason, FCC(Federal communications commission) is considering cognitive radio system to increase spectral efficiency. In this paper, we present the performance analysis of signal detection by using RS(Reference signal) for LTE environments. Especially, we analyze the performance of detection probability in case of downlink LTE system. In the simulation, we generate OFDMA signal format which is specified in the LTE system. We assume additive white Gausssian noise channel environment. We estimate the performance by setting the threshold value of 5 % and 10 % based on CFAR(Constant false alarm rate) and false alarm rate, respectively. Finally, we discuss a future study plan on the applicability of CR to the LTE system.
Keywords
3G LTE; Cognitive radio; OFDMA; RS signal; Signal detection; Spectrum sensing;
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