DocumentCode
989046
Title
Primary System Detection for Cognitive Radio: Does Small-Scale Fading Help?
Author
Larsson, Erik G. ; Regnoli, Giorgio
Author_Institution
Linkoping Univ., Linkoping
Volume
11
Issue
10
fYear
2007
fDate
10/1/2007 12:00:00 AM
Firstpage
799
Lastpage
801
Abstract
We consider the effect of small-scale fading on the detection of weak signals in cognitive radio systems. We formulate a model for the detection problem taking fading into account, and give the associated likelihood ratio tests. Additionally we give an expression for the asymptotic detection performance and use this to consider the tradeoff between the detection performance and the coherence time and bandwidth of the channel.
Keywords
cognitive radio; fading channels; signal detection; associated likelihood ratio tests; channel bandwidth; cognitive radio; primary system detection; small-scale fading; weak signals detection; Bandwidth; Cellular networks; Cognitive radio; Coherence; Fading; Frequency; Helium; Interference; Signal detection; Testing;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2007.070923
Filename
4389791
Link To Document