Comparison of Spectrum Sensing Algorithms for Cognitive Radio Systems
Young-Hoon Choi, Yoon‐Hyun Kim, Jin-Young Kim, Jung‐Hoon Lee, Jaesang Cha · The Journal of the Institute of Webcasting, Internet and Telecommunication · 2011
Cognitive radio (CR), which is proposed as a technology that utilizes the frequency resources effectively, has studied to relive scarcity of the frequency resources. CR provides opportunistically under-utilize licensed frequency to the secondary user. However, in the wireless channels, due to the effect of fading and shadowing environments, spectrum sensing performance is compromised. Besides, to detect and classify various CR systems, a novel spectrum sensing algorithm is needed. Therefore, in this paper, we proposed the spectrum sensing algorithm with water marking scheme.