Geometrically based directional channel model for urban mobile communication systems

This paper proposes a geometrically based propagation model for an urban mobile environment that establishes a relationship between the angle-of-arrival and time-of-arrival of multipath components. The model is characterized by the geometric locations of a base station and mobile station among urban city structures. This model comprises three sets of propagation characteristics: the street-microcell propagation characteristics around mobile stations; the reflection and scattering characteristics around reflection areas; and the macrocell propagation characteristics from the reflection area to the base station. In particular, by using the propagation characteristics of a street-microcell around the mobile station, a more realistic model is established compared to previous models, which were based on circular or elliptic reflective areas.