Title :
Cognition Based Seamless Transmissions by Using Underlay-Overlay Switching Method in Future Wireless Communication System
Author :
Lee, Woongsup ; Lee, Howon ; Cho, Dong-Ho
Author_Institution :
Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology (KAIST), 373-1, Guseong-dong, Yuseong-gu, Daejeon, Korea, Telephone: +82-42-869-3467, Fax: +82-42-869-4042, Email: wslee@comis.kaist.ac.kr
Abstract :
Cognitive radio is a promising and challengeable technology for maximizing radio resource utilization in a future wireless communication system. In this paper, we describe a problem caused by primary users of a cognitive radio system and propose underlay-overlay switching and underlay-relay methods to solve the problem in the cognitive radio system. Through performance analysis and simulation results, we show that our proposed method has outstanding performance in view of outage probability compared with a conventional method.
Keywords :
Analytical models; Bandwidth; Cognition; Cognitive radio; Communication switching; Frequency; Performance analysis; Resource management; Telephony; Wireless communication;
Conference_Titel :
Cognitive Radio Oriented Wireless Networks and Communications, 2007. CrownCom 2007. 2nd International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
978-1-4244-0814-6
Electronic_ISBN :
978-1-4244-0815-3
DOI :
10.1109/CROWNCOM.2007.4549827
