In cognitive radio networks (CRNs), spectrum sensing is critical for guaranteeing that the opportunistic spectrum access by secondary users (SUs) will not interrupt legitimate primary users (PUs). The application of full-duplex radio to spectrum sensing enables SU to carry out sensing and transmission simultaneously, improving both spectrum awareness and CRN throughput. However, the issue of sp...

We propose and analyze trust-based cooperative spectrum sensing data fusion schemes against spectrum sensing data falsification attacks in cognitive radio networks. We first consider the case in which a centralized data fusion center is in place for decision making. Then we extend it to the case in which the data fusion center is absent leading to autonomous and distributed decision making. Our...

This paper analyzed the performance of multihop relay cooperative spectrum sensing. The closed form expression of the upper bound of the detection probability of multi-hop relay cooperation is derived in Rayleigh flat fading channel. It provides the theoretical basis for analyzing the performance of multi-hop relay cooperative spectrum sensing. Simulation results show that the detection probabi...

Multiple secondary users (SUs) perform collaborative spectrum sensing (CSS) in cognitive radio networks to improve the performance. However, this system severely degrades with data falsification (SSDF) attacks from a large number of malicious users, i.e., massive SSDF attacks. To mitigate such attacks, we propose joint and access framework. During sensing, each SU compares decisions CSS indepen...

The primary user emulation (PUE) attack is one of the strongest attacks in mobile cognitive radio networks (MCRN) because users (PU) and secondary (SU) are unable to communicate if a malicious (MU) present. In literature, some techniques used detect attack. However, those do not explore cooperative detection PUE using deep neural (DNN) MCRN network with experimental results on software-defined ...

In this work, cooperative spectrum sensing technology is applied to optimize the outage probability of cognitive relay networks. The outage performance optimization problem of cognitive relay networks is resolved by designing the sensing time and fusion rule threshold appropriately. The outage probability by high signal to noise ratio (SNR) approximation under Rayleigh fading channels is derive...

With the exponential increase in wireless applications, there arises the need to utilize the spectrum more efficiently. Cooperative spectrum sharing (CSS) schemes have been proposed as a viable framework for cognitive radio where, an unlicensed (secondary) user can access the spectrum of licensed (primary) user, on the condition that unlicensed user will help the licensed user in achieving the ...

An explosive growth in vehicular wireless services and applications gives rise to spectrum 1 resource starvation. Cognitive radio has been used to vehicular networks to mitigate the impending 2 spectrum starvation problem by allowing vehicles to fully exploit spectrum opportunities unoccupied 3 by licensed users. Efficient and effective detection of licensed user is a critical issue to realize ...

The rapid growth of wireless applications has increases the importance for efficient utilization of the scarce spectrum resources. Cognitive Radio Network (CRN) is an emerging technology which leads to solve these problems through dynamic utilization of the unused licensed spectrum. Spectrum sensing is a key function of cognitive radio to find the spectrum holes and Collaborative or cooperative...

Maritime cognitive radio networks (MCRNs) have recently been proposed for opportunistic utilization of the licensed band. Spectrum sensing is one of the key issues for the successful deployment of the MCRNs. The maritime environment is unique in terms of radio wave propagation over water, surface reflection and wave occlusions. In order to deal with the challenging maritime environment, we prop...