Optimal detector randomization in cognitive radio systems in the presence of imperfect sensing decisions
Sezer, A. D.
Gursoy, M. C.
IEEE Communications Letters
213 - 216
Item Usage Stats
MetadataShow full item record
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.
Probability of error
Average probability of error
Imperfect spectrum sensing
Maximum a posteriori probability
Probability of errors
Published Version (Please cite this version)http://dx.doi.org/10.1109/LCOMM.2013.120713.132423
Showing items related by title, author, creator and subject.
Ulukus, S.; Yates, R.D. (1998)The decorrelating detector is known to eliminate multiaccess interference when the signature sequences of the users are linearly independent, at the cost of enhancing the Gaussian receiver noise. In this paper, we present ...
Nazirzadeh, M.A.; Atar F.B.; Turgut, B.B.; Okyay, A., K. (SPIE, 2015)We demonstrate Silicon-only near-infrared (NIR) photodetectors (sensitive up to 2000 nm) that meet large-scale ultralow-cost fabrication requirements. For the detection of infrared photons, we use metal nanoislands that ...
Bayram, Suat; Gezici, Sinan (IEEE, 2009)Under certain conditions, addition of noise can enhance performance of suboptimal detectors, which is called the stochastic resonance (SR) effect. In this paper, the effects of SR are investigated for conventional detectors ...