SPOTLIGHT: Citius altius fortius

What with the growing demand for high-quality multimedia services, consumers need greater communication speeds. How do we get them? Some approaches (think 802.11n) try to do so by enhancing existing standards to increase efficiency. Other approaches (think UWB and cognitive radio) are pursuing more aggressive strategies such as sharing spectra with other users. As we reported a few weeks ago, another approach is to follow what we have always done in the past: Move to higher, unused frequencies such the 60 GHz millimeter-wave band. Which is the preferred approach? Analysis