Chapter 5. Spectrum Awareness and Access Considerations
Mr. Preston Marshall
STO, Defense Advanced Research ProjectsAgency, Arlingtom, Virginia
“Spectrum is the ‘life blood’ of RF communications.”

5.1. Dynamic Spectrum Awareness and Access Objectives

The wireless designer's paraphrase of the classic New England weather observation could be “Everyone complains about spectrum availability (or at least the lack of it), but no one does anything about it!” Cognitive radio (CR) technology offers the opportunity to do something about it (spectrum shortage). Spectrum-aware radios offer the opportunity to fundamentally change how we manage interference, and thus transition the allocation and utilization of spectrum from a command and control structure, dominated ...

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