A modified Otsu’s algorithm for improving the performance of the energy detector in cognitive radio

Onumanyi, A. J. and Onwuka, Elizabeth Nonye and Aibinu, Abiodun Musa and Ugweje, Okechukwu C. and Salami, Momoh Jimoh Eyiomika (2017) A modified Otsu’s algorithm for improving the performance of the energy detector in cognitive radio. AEU - International Journal of Electronics and Communications, 79. pp. 53-63. ISSN 1434-8411 E-ISSN 1618-0399

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Abstract

In this paper, we present a modified Otsu’s algorithm for solving the automatic threshold estimation problem in energy detection based Cognitive Radio (CR) application. The modified algorithm was tested extensively and compared with other known algorithms using both simulated and real datasets. In particular, our findings reveal that the modified algorithm provides an averagely lower false alarm rate than the other techniques compared with in this paper. Furthermore, the results obtained show that the algorithm is independent of the bandwidth’s size, while having a total complexity of OðVÞ, where V is the total sample size. Thus, from the results of this paper, full and effective automatic blind spectrum sensing using an Energy Detector is possible in CR. This can be achieved at a Signal-to-Noise Ratio of 5 dB to meet the IEEE 802.22 draft standard of PD > 90% and PFA < 10%

Item Type:	Article (Journal)
Additional Information:	6472/73179
Uncontrolled Keywords:	Adaptive threshold; Autonomous; Cognitive radio Efficient energy detection; Modified Otsu algorithm Nonparametric
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) > TA349 Mechanics of engineering. Applied mechanics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User:	Engku Norulizati Engku Aziz
Date Deposited:	09 Jul 2019 14:17
Last Modified:	09 Jul 2019 14:17
URI:	http://irep.iium.edu.my/id/eprint/73179

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