Parameters Investigation of Elastic Fusion Dual-stage Spectrum Sensing

According to the indulgent channel usage behavior of the licensed user, the secondary user should determine the channel condition by taking the channel usage time of PU into the account. Lately, various types of spectrum sensing with multiple micro-slots solution are proposed to handle the indulgent channel usage behavior. From the studied, the elastic fusion dual-stage spectrum sensing (EFDS) shows the most generalization character that presents reliable detection whether the licensed user accesses or leaves the channel indulgently. According to the EFDS framework, there are two critical factors including a reliability factor and reliability coefficient where the effect of these parameters have not been investigated. In this paper, we consider the effect of the reliability factor and reliability coefficient by simulating their performance under different values. The simulation results show that the reliability factor plays a critical role for detecting the licensed user while the reliability coefficient is used to maintain the detection reliability where these parameters should be finely adjusted and they should be set as low as 0.1. Therefore, EFDS presents high detection performance and low lost channel utilization when the PU indulgently uses the licensed channel.