R Collaborative Spectrum Sensing over Nakagami Fading Channel in Cognitive Radio

Spectrum sensing is a challenging task for cognitive radio. In this paper we analyze collaborative spectrum sensing over Nakagami fading channel in cognitive radio. Through computer simulation, we evaluate the performance of collaborative spectrum sensing and signal detection by employing OR, AND and MAJORITY rules as decision combining. Energy detection is one of the popular spectrums sensing technique for cognitive radio. Energy detector is used to observe the presence of primary user (PU) signal. Simulation results show that expected higher m gives better performance in Nakagami fading channel in Cognitive Radio. It also shows that collaboration improves the probability of detection to detect PUs signal in cognitive radio (CR) system and OR rule is the best among the hard fusion rules.