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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

IET Communications

ISSN

1751-8628

e-ISSN

1751-8636

Svazek periodika

9

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

2216-2226

Kód UT WoS článku

000365687600005

EID výsledku v databázi Scopus

2-s2.0-84949293358