University of Benin, Benin City, Nigeria; ObafemiAwolowo University, Ile-Ife, Nigeria; University of Toronto, Toronto, ON, Canada
Orumwense, E., University of Benin, Benin City, Nigeria; Oyerinde, O., ObafemiAwolowo University, Ile-Ife, Nigeria; Mneney, S., University of Toronto, Toronto, ON, Canada
In this paper, we study the effects of Primary user emulation attacks (PUEA) in a cognitive radio network consisting of a single primary transmitter and a set of co-operating secondary or cognitive users. The primary transmitter communicates with primary receivers within an area called the primary exclusive region (PER). Inside the PER, no cognitive users may transmit so as to guarantee a certain performance for the primary receivers in the region. Outside the PER, cognitive users are uniformly distributed and allowed to transmit provided they are at a distance from the primary receiver. We present an analysis to calculate the powers and probability density function (PDF) of both malicious users and good secondary users and compare it with the simulated results. The PDF is used in Neyman-Pearsons composite hypothesis test to study the impact of PUEA in the network. Results show that the number of malicious users in the system can significantly increase the probability of false alarm in the network. © 2014 Praise Worthy Prize S.r.l. - All rights reserved.