NDLI: Spectrum Availability Recheck Scheme (SARS) for cognitive radio systems with mobility

Content Provider	IEEE Xplore Digital Library
Author	Woongsup Lee Dong-Ho Cho
Copyright Year	2012
Description	Author affiliation: Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea (Woongsup Lee; Dong-Ho Cho)
Abstract	We consider the change of spectrum availability which is caused by the mobility of a cognitive radio (CR) user. Given that the CR user should not interfere with a primary user (PU), it should periodically check the availability of the CR band which is being used. Herein, we refer the scheme to check the availability of spectrum as SARS (Spectrum Availability Recheck Scheme). We propose a SARS for both CR systems which use a geo-location database to find vacant band and CR systems which use spectrum sensing to find vacant band. The proposed SARS adaptively changes its operation according to the velocity of a CR user. Through the analysis and the simulation results, we have shown that the spectrum availability of a CR user can be efficiently verified by using proposed SARS, when the CR user moves. We also have shown that the overheads caused by our SARS is low.
Starting Page	309
Ending Page	314
File Size	427744
Page Count	6
File Format	PDF
ISBN	9781467329767
ISSN	21665419
e-ISBN	9781936968558
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-18
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	ICST
Subject Keyword	Availability Performance evaluation Power measurement Sensors Random variables Cognitive radio Global Positioning System
Content Type	Text
Resource Type	Article

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