MATLAB Simulink Modeling for Spectrum Sensing in Cognitive Radio Networks

Abstract

A simulation model of spectrum sensing detector based on energy is developed using MATLAB Simulink in this paper. The model is designed considering optimal threshold and Signal-to-Noise Ratio (SNR) conditions. Users own block is designed for optimal threshold calculation, where Matlab algorithm is written in the background (MATLAB editor window). Real and estimated Primary User (PU) activities at different time intervals are investigated and tabulated from the simulation results. Further, the designed model is extended for Cooperative Spectrum Sensing (CSS).