Performance enhancement of cognitive radio network using dynamic spectrum sensing

Abstract

Traditional Static Spectrum Access (SSA) is ineffective in utilizing the available spectrum effectively. Moreover, there is tremendous progression in devices and connections ultimately urging for more channels and bandwidth requirement. Thus, Dynamic Spectrum Access (DSA) emerges as a favorable technology overcoming the scantiness of SSA. It permits the unlicensed users or secondary users to access the licensed spectrum band when licensed user is not using i.e. the spectrum is idle. It increases the utilization of finite available spectrum alleviating the spectrum scarcity issue. It is best incorporated in Cognitive Radio (CR) technology exploiting the spectrum holes or white spaces. Spectrum sensing at Secondary User (SU) level and taking accurate decision at fusion center are of key importance for efficient performance of the overall CRN.