Mobility is obviously one of the main characteristics of the mobile Internet. Next toheterogeneity it is one of the root causes for challenges when mobile end devices are used.Mobility leads to specific characteristics of the usage of end devices which can becategorized as technical, social and...

In addition to mobility, heterogeneity is one of the root causes for challenges of the mobileInternet. At all levels heterogeneity can be found: For handsets, networks and software. Thisdiversity leads to negative consequences, both technological and economic, for stakeholdersof the value chain...

Multicarrier Code Division Multiple Access (CDMA) is one of the most promising candidates for radio access in next generation wireless systems. It is a combination of multicarrier modulation [Orthogonal Frequency-Division Multiplexing (OFDM)] and CDMA, which is very effective in combating severe...