Among the applications that are foreseen already is the wireless extension of the next-generation broadband access fibre optic networks. They will support data rates of tens of gigabits and are expected to replace xDSL and cable modem access networks. Furthermore, ultra broadband indoor pico-cells could be deployed in the given area to respond to the demand for a high aggregate capacity from a number of mobile users, each of which would be supplied with multimedia level data rates. A possible corresponding scenario is a scientific conference, where each of the participants can download multimedia data in real time and concurrently participate at various sessions. Gigabit wireless systems could also find use in supporting wireless virtual reality applications, for example computer games. Last but not least, military applications for ultra high speed communications in the battlefield can be conceived.