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Cognitive Radio permits the secondary users to share the spectrum in the space and time domain. But only while the primary users don't occupy the spectrum, the secondary users could access. In addition to the dynamic nature of the spectrum environment, Media Access Control (MAC) spectrum access protocol design is facing several important issues. The secondary users need to determine when and which...
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.