Spatio-Temporal Weighted Spectrum Cooperation Sensing in Cognitive Radio Networks

With the social development, people´s demand for wireless communication is increasingly urgent, but wireless spectrum resources have become more and more tense. To address these conflicts, cognitive radio has been put forward. In this paper, a cooperation spectrum-sensing scheme is proposed to efficient spatio-temporal weighted the sense results while meeting the delectability requirements. The centre node determines the spectrum available by considering two aspects: the current time and the previous sample of spectrum sensing. Two kinds of spatio-temporal sensing data are weighted to determine the spectrum availability. In the end, the performance of sensing is evaluated by simulation.