Double threshold-based cooperative spectrum sensing for a cognitive radio network with improved energy detectors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F15%3APU116134" target="_blank" >RIV/00216305:26220/15:PU116134 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1049/iet-com.2014.1098" target="_blank" >http://dx.doi.org/10.1049/iet-com.2014.1098</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1049/iet-com.2014.1098" target="_blank" >10.1049/iet-com.2014.1098</a>

Result language

angličtina

Original language name

Double threshold-based cooperative spectrum sensing for a cognitive radio network with improved energy detectors

Original language description

Performance of cooperative spectrum sensing in a cognitive radio (CR) network is investigated where each CR node uses an improved energy detector (IED) to sense the primary user (PU), and makes a local decision regarding the presence of PU using double thresholds (DTHs). The local hard decisions are combined at fusion centre (FC) to obtain the global decision. The advantage of a DTH-based system over a single threshold based one is, a CR node can opt for no decision when a decision variable lies in the fuzzy zone between two thresholds. Such censoring reduces the transmission overhead between CR and FC without significantly affecting the receiver operating characteristics. In this study, the performance of the abovementioned CR network has been assessed interms of the average number of normalised transmitted sensing bits (knor), the total error probability (Pe,n) and optimal number of CR users that ensures minimum Pe,n. It was observed that knorincreases as the signal power raise factor of IED increases or failed sensing probability decreases. Further, the agility of the network improves as the PU death rate increases. Impact of reporting channel on the sensing performance has also been indicated.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

—

Continuities

O - Projekt operacniho programu

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IET Communications

ISSN

1751-8628

e-ISSN

1751-8636

Volume of the periodical

9

Issue of the periodical within the volume

18

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

2216-2226

UT code for WoS article

000365687600005

EID of the result in the Scopus database

2-s2.0-84949293358