Mobile - Wireless Communications White Papers
A Framework for Cognitive WiMAX With Frequency Agility
Overview Cognitive radios have the ability to sense the radio spectrum environment and to switch dynamically to available frequency ranges. Mobile WiMAX is an emerging wireless networking standard which could potentially benefit from cognitive radio technology. This paper develops a framework for applying cognitive radio technology to mobile WiMAX networks to increase capacity and simplify network operations. In the proposed cognitive WiMAX architecture, base stations are equipped with sensitive detectors and assign channels to subscriber stations dynamically based on spectrum availability. Power control is employed to increase frequency reuse in conjunction with spectrum sensing. Using computer simulation, the paper evaluates the performance of "Cognitive channel assignment" relative to conventional dynamic channel assignment.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | |
|---|---|---|---|
| Date Published | May 2008 | ||
| Format | White Papers | ||
| Topics | |||
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