Numerical analysis of the impact of shadow fading in power control and contention control interference management schemes in cognitive radio

Due to the increasing demand for the spectrum, the cognitive was proposed to improve the underutilization of the radio spectrum. Under this condition, the secondary users are allowed to share spectrum with the licensed primary user without causing harmful interference to the network. In this paper we studied the interference modeling under two interference management´s scheme which is the power control and contention control scheme. We modeled the inference on these two schemes and derived a characteristics based function with this function we investigated the impacts of the shadowing and fading on a cognitive radio network with a hidden primary receiver. The results presented shows that the impact of shadowing is similar in both schemes presented in this paper.