Bazil Taha-Ahmed

W-CDMA uplink capacity and interference statistics of a long tunnel cigar-shaped microcells

The capacity and the interference statistics of the sectors of the cigar-shaped W-CDMA microcell are studied. A model of multimicrocells is used to analyze the uplink when the users are within an under-ground train. The microcells are assumed to exist in a long under-ground tunnel. The capacity and the interference statistics of the microcells are studied for different propagation exponent, different antenna side lobe levels and different bends loss. The capacity for the best case and worst case are given.

On the UMTS macrocells downlink capacity in open rural zone near shaded Deep Space Network (DSN) installations

The UMTS macrocell downlink capacity is evaluated for macrocells that operate at the same frequency of the Deep Space Network (DSN) and that are near shaded DSN installations. It has been found that the downlink capacity is not affected when the distance between the DSN installations and the macro-cell is more than 35 km. For a distance greater than the obstacle distance, the effect of the DSN is less compared with the un-shaded case.