STRUCTURE OF BTS SHELF IN CDMA SYSTEM

摘要

A structure of BTS shelf in a CDMA system includes a plurality of channel cards having a channel card common section containing a plurality of channel elements, a digital combiner and a register 31, a data bus 31 connected to the register of each channel card, a bus loader 34 for supplying a predetermined control signal to the register and loading data on the data bus, a master register 35 controlled by the bus loader for receiving and storing the data loaded on the data bus, an adder 36 controlled by the bus loader for obtaining the sum from the data of the master register in corresponding frame to the data of the previous frame, and a D/A converter 37 controlled by the bus loader for converting the sum in the corresponding frame into an analog signal and supplying it to a sector match card 14.