Premises and PerspectivesPremises and Perspectives 201
novel approach for improving the utilization of a precious natural resource:
the electromagnetic spectrum.
The cognitive microelectronic device, built on a software-defi ned device
is defi ned as an intelligent wireless communication system that is aware of
environment, learn from the environment, and adapt to statistical variations
in the input stimuli, with two primary objectives in mind, highly reliable
communication whenever and wherever needed and effi cient utilization
of the electromagnetic spectrum.
At the outer limit of self-assembly, as it is currently defi ned in the
physical and biological sciences, we fi nd the wired systems: computers,
sensors, and controllers that interact with ...