Mobile communication is an integrated part of our daily lives. It surrounds us, and provides a ubiquitous communication channel even for the most demanding multimedia services. The focus of mobile communication shifts from voice to mobile broadband data services. Mobile operators are introducing novel techniques, such as High Speed Packet Data (HSXPA) and UMTS LTE (Long Term Evolution), to serve more traffic on the radio interface. Radio cells are also getting smaller, so mobile operators can achieve higher level of spatial reuse of the radio channels, too. Besides transmission speed, the...