On the Electromagnetic Compatibility in construction of Microcellular Mobile Communication Networks

摘要

The microcellular mobile radio systems are widely utilized in the third generation of digital mobile communication networks, and will certainly be applied in the forthcoming personal communication networks as well. However, we still have no strict definition so far for the so-called "microcell area" in the urban wireless communication environment. Roughly speaking, the microcell implies such a region in which theradiated signal power is relatively small (typically around 10mW), the height of the transmitting antenna is low (usually suspended at a lamp-pole in a street). Therefore the covering area of a base-station in a microcell system is much smaller than that of a base-station in a macrocell system. It is naturally understandable that the surrounding buildings will definitely affect the radiation wave coverage of a microcellular base-station to a great extent.