With the multi-mode era coming, ZTE, who is dedicated to providing comprehensivenetwork solutions and delivering the future-oriented quality network for the operators,developed the ground breaking SDR unified platform with the essential feature to supportmulti-mode and multi-band radio access. Based on this innovative SDR platform, ZTE promotes a series of base stations to satisfydifferent scenario requirements, including Indoor Macro, Outdoor Macro, Distributed,Outdoor Micro, and Mini BTS. These SDR-based serial base stations aim to design a unified network which can bringseamless experience to operators. In GSM, UMTS or mixed mode, it enables operatorsto save CAPEX and OPEX significantly because they only need to deploy a Uni-RadioAccess Network, compared to the independent GSM and UMTS networks. ZXSDR BS8900A is one outdoor macro BTS, providing an all in one solution for powersupply, battery, and transmission integration. It offers GSM/UMTS dual-mode networkingcapability and provides a future-proof solution for smooth evolution to Enhanced EDGE,HSPA+ and LTE. BS8900A appearance is shown in Figure 1-1. In the followingchapters, a general description will be given to ZXSDR BS8900A (hereafter referred as BS8900A) BS8900A adopts standard 19 inches rack structure. It is composed of outdoor baseband cabinet BC8910A, outdoor radio cabinet RC8910A, outdoor radio cabinet RC8911A, and battery cabinet PC8910A. Typical configuration dimension of BS8900A is 1600mm *600mm * 600mm (H*W*D). With the 200mm bottom base and 16mm top cover, the totalheight reaches 1816mm. Outdoor baseband cabinet is also called site support cabinet, including power distributionshelf, fan shelf, baseband unit shelf, ventilation shelf, and additional space reserved for transmission or other equipments. Outdoor RF cabinets are used for containing radio unit,maximum supporting 6 RSUs. Battery cabinet supports maximum 2?150AH battery.BS8900A complete style is shown in the following figure, consisting of one BC8910A,one RC8910A and one PC8910A. BS8900A single rack supports up to 60 GSM TRXs or30 UMTS CSs.
