Cognitive MAC protocols for dynamic spectrum access

Abstract

The paradox between the overly crowded spectrum and the pervasiveness of idle frequency bands in both time and space indicates that spectrum shortage results from the current static spectrum management policy rather than the physical scarcity of usable radio frequencies [1]. To improve spectrum efficiency, researchers in the engineering, economics, and regulation communities have been actively searching for better spectrum management strategies. Under the general term of dynamic spectrum access, various spectrum reform ideas have been proposed. We provide below a taxonomy to illustrate the relationship among these diverse ideas. © 2007 Springer Science+Business Media, LLC.