부산대학교 도서관

This paper presents an energy aware cluster based architecture where trust aware model is used to improve energy efficiency and spectrum handoff framework is used to reduce handoff rate and thereby improve throughput. The main objectives are trustworthy node selection, cluster head detection, transmission power reduction and increasing successful data transmission by performing handoff. A set of cognitive radio nodes form a cluster based on minimum normalized distance and sensed common free channels. Cluster Head Election Cost (CHEC) is used to determine Cluster Head and Secondary Cluster Head. It also reduces delay for different network sizes compared to random handoff process. The performance of the proposed model has been evaluated through numerical simulations. Simulation results show that the proposed scheme can effectively maximize the throughput of the Secondary User and reduce average handoff probability.