Optimal detector randomization in cognitive radio systems in the presence of imperfect sensing decisions
Date
2014Source Title
IEEE Communications Letters
Print ISSN
1089-7798
Volume
18
Issue
2
Pages
213 - 216
Language
English
Type
ArticleItem Usage Stats
215
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155
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Abstract
In this study, optimal detector randomization is developed for secondary users in a cognitive radio system in the presence of imperfect spectrum sensing decisions. It is shown that the minimum average probability of error can be achieved by employing no more than four maximum a-posteriori probability (MAP) detectors at the secondary receiver. Optimal MAP detectors and generic expressions for their average probability of error are derived in the presence of possible sensing errors. Also, sufficient conditions are presented related to improvements due to optimal detector randomization.
Keywords
Cognitive radioDetector randomization
Probability of error
Spectrum sensing
Average probability of error
Detector randomizations
Generic expression
Imperfect spectrum sensing
Maximum a posteriori probability
Optimal detectors
Probability of errors
Spectrum sensing
Cognitive radio
Optimization
Radio systems
Random processes
Detectors
Permalink
http://hdl.handle.net/11693/26345Published Version (Please cite this version)
http://dx.doi.org/10.1109/LCOMM.2013.120713.132423Collections
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