Digital Signal Processing Reference
In-Depth Information
a main design goal, and cognitive features are clearly desired. The usage of mm-
wave communication for short-range access purposes has recently gained interest
in standardization [20]. Definitely the 60 GHz spectrum enables wider spectrum
still, moreover frequency reuse at very short distances is possible, and thus smaller
cells are promoted. Low cost and low power 60 GHz radios will be a vital technol-
ogy, and are gaining maturity. Directive and adaptive antenna (arrays) both below
10 GHz and for mm wave will be essential to maximize connectivity for minimal
energy and radiation. We believe that smart(er) and cognitive radio operation will
be key to enable ever more complex wireless communication networks. We hope to
have been able to show to our readers that workable solutions can bring significant
gain already today. Definitely this is not the end, nor is the end in sight. As (coaches
of) enthusiastic researchers we are convinced that great innovation is on its way
and that this will enable more wireless capacity for/in less spectrum and energy for
many years to come!
