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Cognitive radio (CR) is a promising technology to alleviate current spectrum scarcity via enabling the secondary user (SU) to opportunistically access the unutilised spectrum band that has been licensed to the primary user (PU) for exclusive use. To identify the access opportunities, SU should reliably detect whether PU is present or not. Previous works on the problem of PU detection have suggested...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.