In a mobile communication environment, the speed and accuracy of the spatial filtering algorithms must be rather fast and high in order to track the subscribers in real tune for the base station.

The task of this research is to design a high speed data switch network which is used in a base station controller (BSC) of a digital mobile communication system based on CDMA technique.

High speed optical transceiver module decides the quality of optical repeater station, a novel design method was proposed for 3g mobile communication, and has receive the result of design.