Dynamic Spectrum Access for Cognitive Radio Networks

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Provided by: Creative Commons
Topic: Mobility
Format: PDF
A radio in which the communication systems are conscious of their internal state and environment such as location and deployment of RF frequency spectrum at that location is known as cognitive radio. The usable radio spectrum is finite and is a precious resource, whereas with the increasing demand of wireless devices, the demand for access to it is becoming increasingly significant and hence difficult to achieve. It has been known that the problems of spectrum underutilization and over utilization is not much because of the physical scarcity of frequencies, but mostly as a result of the spectrum management.
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