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.