Title :
Optimization of Periodic Channel Sensing by Secondary Users in a Cognitive Radio Network
Author :
Xue, Dongyue ; Wang, Xinbing ; Hossain, Ekram
Author_Institution :
Dept. of ECE, Ohio State Univ., Columbus, OH, USA
Abstract :
With the employment of cognitive radio technology, dynamic spectrum management has the potential to solve the underused spectrum problem. In this paper, we introduce and compare two periodic sensing and transmission schemes for secondary users (SUs) in cognitive radio networks. In an attempt to maximize the exploitation of spectrum opportunities in these two schemes, we analyze three metrics of SUs, namely, channel utility, collision rate and sensing overhead. Optimizations of SU´s slot period are analyzed under single-SU single-channel scenario. The proposed schemes are applicable to any i.i.d. ON-OFF channel distribution.
Keywords :
cognitive radio; optimisation; radio spectrum management; channel utility; cognitive radio network; collision rate; dynamic spectrum management; i.i.d. ON-OFF channel distribution; periodic channel sensing optimisation; secondary users; single-SU single-channel scenario; underused spectrum problem; Cognitive radio; Equations; IEEE Communications Society; Mathematical model; Measurement; Media Access Protocol; Sensors;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5683225