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Spectrum Sensing for ISDB-TB Systems with Cognitive Radio

A current topic of interest in telecommunication is the efficient use of the frequency spectrum by means of cognitive radio technique, where an important issue is the spectrum sensing. In this paper, spectrum sensing techniques are discussed based on energy detection in the TV band. A study of these techniques is presented for the ISDB-TB standard. The performances of the addressed techniques are compared using probability of detection and false alarm; simulations for different scenarios are presented.