Eigen value based detection; Primary user traffic; Spectrum sensing; RLRT
Résumé :
[en] In this paper, the effect of primary user (PU) traffic on the performance of largest eigenvalue based spectrum sensing technique (Roy’s Largest Root Test (RLRT)) is investigated. A simple and realistic discrete time modeling of PU traffic is considered which is only based on the discrete time distribution of PU free and busy periods. Furthermore, in order to analyze the effect of PU traffic on the detection performance, analytical expressions for the probability density functions of the decision statistic are derived and validated by Monte-Carlo simulations. Numerical results demonstrate that the sensing performance of RLRT is no more monotonically increasing with the length of the sensing duration and also with SNR which contrasts with the common property of the spectrum sensing techniques under known PU traffic scenario. Furthermore, it is shown that the performance gain due to the multiple antennas in the sensing unit is significantly suppressed by the effect of the PU traffic when the frequency of the PU traffic transitions is higher.
Disciplines :
Ingénierie électrique & électronique
Auteur, co-auteur :
Dhakal, Pawan; Politecnico di Torino, Turin, Italy
SHARMA, Shree Krishna ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Riviello, Daniel; Politecnico di Torino, Turin, Italy
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Effect of Primary User Traffic on Largest Eigenvalue Based Spectrum Sensing Technique
Date de publication/diffusion :
mai 2016
Nom de la manifestation :
International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM)
Organisateur de la manifestation :
EAI
Lieu de la manifestation :
GRENOBLE, France
Date de la manifestation :
30-05-2016 to 01-06-2016
Manifestation à portée :
International
Titre de l'ouvrage principal :
Proceedings of International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM)
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