The impact of multipath propagation on the performance of smart antennas in micro- and pico-cellular CDMA environments

Simulation results given here support the fact that for small cellular environments, grouping multipath rays in the same bin into a single ray, does not lead to a realistic model for such environments. This results from the fact that for these environments, propagation time between transmitter and receiver is very short and therefore, coherence bandwidth of the channel can become very large. Finally, it is shown that even in the presence of a LOS path, it may not be justifiable to neglect weak correlation between multipath rays.