A Fuzzy Decision Scheme for Cooperative Spectrum Sensing in Cognitive Radio

Author

Zhang, Hongtao ; Wang, Xiaoxiang

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2011

fDate

15-18 May 2011

Firstpage

1

Lastpage

4

Abstract

This paper studies closed-form expression between detect probability and false alarm probability for centralized cooperative network in cognitive radio based on a fuzzy decision scheme. By introducing two thresholds and fuzzy logic values to represent the reliability of the decision results, a novel fuzzy decision scheme for cooperative spectrum sensing is proposed. Analysis and simulations show that the proposed scheme could improve the detect probability effectively under ´AND´ and ´OR´ fusion rules, and reduce the number of cooperating cognitive users which depends on Δλ.

Keywords

cognitive radio; cooperative communication; fuzzy logic; fuzzy set theory; probability; AND fusion rules; OR fusion rules; centralized cooperative network; closed-form expression; cognitive radio; cooperative spectrum sensing; detect probability; false alarm probability; fuzzy decision scheme; fuzzy logic values; Closed-form solution; Cognitive radio; Detectors; Fuzzy logic; Relays; Reliability;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Conference_Location

Budapest

ISSN

1550-2252

Print_ISBN

978-1-4244-8332-7

Type

conf

DOI

10.1109/VETECS.2011.5956116

Filename

5956116