Abstract
The different realistic propagation channels are faced frequently the multipath fading environments. The main goal of this system design (cognitive radio network) is to improve the efficiency of spectrum access on a non-interfering basis. This system achieves high utilization for the limited spectrum in order to fulfill needs for all users’ demands which are considered as a problem in wireless communications due to rapidly increasing in wireless applications and service. This system is exposed to attack due to the vulnerabilities existence in this system. So, the main outcome of this paper is to investigate the performance of the cooperative sensing in cognitive radio networks under malicious attacks over different channel impairments, and to illustrate the most suitable individual probability of detection in real faded channel by using Nakagami model. This paper illustrates the effectiveness of the attacks and fading on the performance of spectrum sensing process.
Highlights
Cognitive Radio Networks (CRNs) are considered as promising technologies that utilize the unused spectra to enable much higher spectrum efficiency
When the primary user does not use the spectrum, a malicious user or attacker sends a signal with characteristics identical to the primary user signal the secondary user may think that this signal is coming from the primary user
This paper investigates the behavior of CRNs with cooperative sensing process under malicious attacks during channel impairments which are not studied in details in [3] by using Nakagami model
Summary
Cognitive Radio Networks (CRNs) are considered as promising technologies that utilize the unused spectra to enable much higher spectrum efficiency. An introduction for this system is illustrated in [1]; different types of threats are discussed in [2] To make this utilization, the spectrum sensing process is needed to recognize on the situation of the primary user. This paper investigates the behavior of CRNs with cooperative sensing process under malicious attacks during channel impairments which are not studied in details in [3] by using Nakagami model. The effect of cooperative spectrum sensing which considered as a critical issue of cognitive radio technology which it needs to detect the presence of primary users accurately and swiftly using many techniques for make a decision was discussed in [11]. The goal of this paper is studying the performance of cooperative spectrum sensing over Nakagami faded distributions under malicious attack which is not illustrated in detailed in [3]
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