Effect of Primary User Traffic on Largest Eigenvalue Based Spectrum Sensing Technique

Dhakal, Pawan; SHARMA, Shree Krishna; CHATZINOTAS, Symeon; OTTERSTEN, Björn; Riviello, Daniel

doi:10.1007/978-3-319-40352-6_6

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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.

2016 • In Proceedings of International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM)

Peer reviewed

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https://hdl.handle.net/10993/28307

DOI
10.1007/978-3-319-40352-6_6

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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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