Design of Terminals and Infrastructure Components for Cognitive Wireless Networks

Cognitive Radio Prototyping

“…Broadband multimedia applications [1] have become a driving force in the further evolution of wireless, in particular, of radio communications over the past decade [2], [3]. Current developments include hypermedia, i.e.…”

“…A single homogeneous network will not be able to provide the requested versatile services and applications alone. Only heterogeneous networks consisting of wired and wireless networks will form a catalyst for the evolution of such a diverse mobile world [2], [3]. Future wireless communication systems will hence hierarchically integrate a broad variety of wireless networks into a common structure, encompassing a multitude of different proprietary and standardized wireless system concepts.…”

“…A prominent recent approach has been "Second Life", a networked VR application which has found an increasing acceptance in our information society. The furthering and evolution of such VR applications will require cooperative wireless networks [2], [3].…”

“…A cognitive radio device has the capability to sense and be aware of its operational environment, to share information regarding its spectral, temporal, and spatial characteristics with other systems and to dynamically and autonomously adjust its radio operating parameters depending of the results of its actions and environmental usage patterns. This paradigm requires the realization of appropriate hardware/software (14W/SW) concepts for both terminals and infrastructure components [2], [3], as well as the development of appropriate protocols, cf. e.g.…”