%0 Journal Article %A Keunhong Chae and Youngpo Lee and Seokho Yoon %D 2013 %J International Journal of Electrical and Computer Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 81, 2013 %T Spectrum Sensing Based On the Cyclostationarity of PU Signals in High Traffic Environments %U https://publications.waset.org/pdf/16679 %V 81 %X In cognitive radio (CR) systems, the primary user (PU) signal would randomly depart or arrive during the sensing period of a CR user, which is referred to as the high traffic environment. In this paper, we propose a novel spectrum sensing scheme based on the cyclostationarity of PU signals in high traffic environments. Specifically, we obtain a test statistic by applying an estimate of spectral autocoherence function of the PU signal to the generalized- likelihood ratio. From numerical results, it is confirmed that the proposed scheme provides a better spectrum sensing performance compared with the conventional spectrum sensing scheme based on the energy of the PU signals in high traffic environments. %P 1199 - 1202