Analysis of a MIMO Outdoor Channel With Hybrid EM-Based Modeling

We consider the effects of the local scatterers, the number of antennas, the mobile position, and the signal-to-noise ratio on the performance of a multi-antenna system via electromagnetic-based modeling. The urban microcell scenario is adopted and simulated using a hybrid electromagnetic model to obtain the channel matrix. Comparisons with the measurement-based spatial channel model (SCM) at frequency 2 GHz are made. We show that the channel condition improves as the multipath richness enhances. This also improves the capacity, which becomes more pronounced as the number of antennas increases. Our discussions show that the SCM does not reflect the actual system performance in some scenarios.

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