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Performance of Spectrum Sensing for Cognitive Radio Systems with ITS Applications  

Lee, So-Young (광운대학교 전파공학과)
Kim, Eun-Cheol (삼성탈레스 TICN 체계개발팀)
Kim, Jin-Young (광운대학교 전파공학과)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.9, no.3, 2010 , pp. 51-58 More about this Journal
Abstract
According to dramatic increase of wireless communication demand, more spectrum resources are needed to support considerable and various wireless services, so cognitive radio(CR) was proposed to reuse unused frequency efficiently. Also, FCC revises its policies regarding the usage of the TV white spaces by unlicensed users. CR is an intelligent wireless communication system that is aware of the radio environment and is capable of adapting its operation to the statistical variations. Spectrum sensing is the key task of the CR systems. However, since spectrum sensing performance changes according to the received signal that is received various geography environment, regional characteristics are considered to estimate the path-loss. Therefore, for more accurate analysis and simulation, we demonstrate the spectrum sensing performance of CR system by various method applying Okumura-hata propagation model.
Keywords
Cognitive radio; spectrum sensing; okumura-hata; path-loss; TV white space;
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