UMTS is real. In a continuously growing number of countries we can walk in the stores of
mobile network operators or resellers and take UMTS PC cards or even third-generation (3G)
phones home and use them instantly. Every day the number of equipments and their feature
sets gets broader. The “dream” of multimedia on mobile connections, online gaming, video
conferencing, real-time video or even mobile TV becomes reality.
With rapid technical innovation the mobile telecommunication sector has continued to grow
and evolve strongly....
During the past years, there has been a quickly rising interest in radio access technologies for providing mobile as well as nomadic and fixed services for voice, video, and data. The difference in design, implementation, and use between telecom and datacom technologies is also getting more blurred.
Visions for systems beyond 3G foresee software deﬁned radio as one of the core enablers of seamless service provision across the boundaries of different wireless transmission platforms. Such visions (e.g. ), assume the use of different types of network  ranging from ﬁxed (e.g. xDSL) connections via short range wireless (PAN/VAN/HAN) schemes, wireless LANs and cellular radio networks to broadcast systems and beyond. Accessing such a variety of different networks will require highly ﬂexible mobile terminals – a capability expected to be provided by software deﬁned radios....