An Energy-aware Cooperative Spectrum Sensing Scheme in Cognitive Radio Sensor Networks
Fanhua Kong, Zilong Jin, Jinsung Cho · 한국정보과학회 학술발표논문집 · 2015
Cognitive radio technology can make secondary users (SUs) access unused licensed spectrum in opportunistic manner without interference to primary users (PUs). Spectrum sensing is a key technology for cognitive radio (CR). However, there are few works on spectrum sensing in cognitive radio sensor networks (CRSNs). In this paper, we propose an energy-aware cooperative spectrum sensing scheme for cluster-based cognitive radio sensor networks. In our proposed scheme, false alarm probability and energy consumption are considered to minimize the number of spectrum sensing nodes in a cluster. Simulation results show that our proposed scheme can obtain a better sensing performance with less sensor nodes and efficiently reduce the energy consumption, and therefore prolong the network lifetime.