DocumentCode :
1975617
Title :
A novel adaptive structure of the energy detector applied to cognitive radio networks
Author :
Shehata, Tarik S. ; El-Tanany, Mohamed
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, ON
fYear :
2009
fDate :
13-15 May 2009
Firstpage :
95
Lastpage :
98
Abstract :
The energy detector (ED) is one of the spectrum sensing techniques that is used in the cognitive radio networks to detect the presence of the primary user (PU) in a certain spectrum band. This technique assumes that the PU is either present or absent during the sensing time. However, the ED´s performance degrades in a scenario when the PU is absent and then appears during the sensing time. The ED´s performance is evaluated for this scenario and a novel adaptive ED structure is proposed to improve the detector performance. Analytical performance evaluation of the adaptive ED along with simulation results show that the proposed ED structure improves the probability of detection compared to the conventional ED.
Keywords :
cognitive radio; probability; radio spectrum management; cognitive radio network; energy detector; primary user detection; probability; spectrum band; spectrum sensing technique; Analytical models; Chromium; Cognitive radio; Degradation; Detectors; Energy measurement; Interference; Noise measurement; Performance analysis; Signal detection;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory, 2009. CWIT 2009. 11th Canadian Workshop on
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4244-3400-8
Electronic_ISBN :
978-1-4244-3401-5
Type :
conf
DOI :
10.1109/CWIT.2009.5069530
Filename :
5069530
Link To Document :
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