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Recent efforts in making licensed spectrum available for secondary use have opened up new opportunities and has redefined the meaning of sharing spectrum. Sharing spectrum requires aggregation of multiple non-contiguous bands of varying width to communicate as a network. Rather than limiting spectrum access to fixed width narrowband channels, they should be treated as conventions that are highly flexible...
As we move forward towards the next generation of wireless protocols, the push for a better radio physical layer is ever increasing. Conventional radio architectures are limited to narrow operating regions and fails to adapt with changing technology. This is further strengthened with the advent of cognitive radio, which needs a more versatile and flexible framework that is programmable within the...
The transformation of dynamic spectrum access (DSA) from theory into practice has begun - regulatory decisions such as the recent U.S. FCC "TV White Space Order" embrace DSA, standards bodies have ratified DSA enabling standards, commercial DSA devices are now available, and numerous DSA prototypes, such as DARPA's XG, have been demonstrated. As networks and devices increasingly gain intelligence...
The four papers in this special section focus on the technology of dynamic spectrum and its policy and economic challenges. The articles were part of the IEEE Dynamic Spectrum Access Networks (DySPAN) conference, which provides a global forum for discussing all aspects of devices and networks that dynamically utilize spectrum on either a consensual or non-consensual basis.
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