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Dynamic spectrum allocation can solve an efficient use of the frequency spectrum where several cognitive devices are searching for spectrum ‘white spaces’. The main concept is to communicate with minimum or without interference to primary users, i.e. licensed users. Cognitive Radio devices must coordinate the communication with peers when they move to another frequency band in presence of licensed...
The current spectrum allocation model aims to avoid interferences in licensed spectrum communications without further concerns regarding spectrum usage. Because the radio spectrum is a finite resource, several approaches have been presented in order to improve the effectiveness of its utilization. The main contribution of this work is to present an opportunistic approach to spectrum sensing and allocation...
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