Cooperative spectrum sensing against attacks in cognitive radio networks

Cognitive radio network security has become an important issue affecting the development of cognitive radio technology. Primary user emulation attacks(PUEA) is a common attack in the Cognitive radio network. In the scheme, we choose cooperative spectrum sensing system as our model and soft fusion as our Fusion method. We analyze the impact of PUEA on the system performance in the traditional maximal ratio combining (MRC) method and single-user energy detection scheme. In order to decrease the effect of PUEA on the system performance, We find the proper weight coefficient. Through the simulation, our scheme can effectively improve the system performance.