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

fYear

2007

fDate

1-3 Aug. 2007

Firstpage

374

Lastpage

383

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CROWNCOM.2007.4549827

Filename

4549827