Diploma Thesis from the year 2012 in the subject Engineering - Communication Technology, grade: excellent, Technical University of Berlin (Intelligent Networks), language: English, abstract: With the increasing data throughput requirements, the cellular network needs to move from homogeneous to heterogeneous system. In fact, the coexistence of different types of base stations with different capabilities such as femto/pico base stations as well as relays and macro base stations in random placements should improve the coverage and the spectral efficiency of the cellular networks. However, the...