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Effect of Primary User Traffic on Largest Eigenvalue Based Spectrum Sensing Technique
Dhakal, Pawan; Sharma, Shree Krishna; Chatzinotas, Symeon et al.
2016In Proceedings of International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM)
Peer reviewed
 

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Keywords :
Eigen value based detection; Primary user traffic; Spectrum sensing; RLRT
Abstract :
[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 :
Electrical & electronics engineering
Author, co-author :
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
External co-authors :
yes
Language :
English
Title :
Effect of Primary User Traffic on Largest Eigenvalue Based Spectrum Sensing Technique
Publication date :
May 2016
Event name :
International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM)
Event organizer :
EAI
Event place :
GRENOBLE, France
Event date :
30-05-2016 to 01-06-2016
Audience :
International
Main work title :
Proceedings of International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM)
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 03 September 2016

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