Network Selection for Secondary Users in Cognitive Radio Systems

Existing studies have demonstrated that uneven and dynamic usage patterns by the primary users of license-based wireless communication systems can often lead to temporal and spatial spectrum under-utilization. This provides an opportunity for the Secondary Users (SUs) to tap into underutilized frequency bands provided that they are capable of cognitively accessing systems without colliding or impacting the performance of the Primary Users (PUs). When there are multiple networks with spare spectrum, secondary users can opportunistically choose the best network to access, subject to certain constraints.

Provided by: Institute of Electrical and Electronics Engineers Topic: Mobility Date Added: Mar 2011 Format: PDF

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