| With the rapid development of internet and intelligent terminals, data traffic of mobilecommunications has increased10-fold since2008, and there are a large number of customersin China. With the delegation of the Ministry of Industry and Information Technology, ChinaMobile Limited has started building a TD-LTE experimental network since2010, and in2012it reached the testing stage. TD-LTE is expected to be used in hotspot, and most of them areindoor areas.As a new generation of mobile multimedia communication, TD-LTE is combined with aseries of latest technologies including MIMO. It is more effective in data alignment, and italso puts forward higher requirements on indoor distribution systems.This thesis focuses on the traditional single-channel indoor distribution systemconstruction double-flow indoor TD-LTE coverage difficult transformation scene, the use ofactive antenna chamber transformation program, the base station controller will output theway in which the use of active TD-LTE signal frequency shift, and then with another roadTD-LTE signal combiner, combiner signal after transmission through the existing distributionsystem to the chamber of the antenna, the antenna in the room before the installation of anactive sub-module, the original separation of the two signals, and through dual-polarizedantenna out to achieve a complete TD-LTE MIMO features.This project is more efficient andeconomical in using materials and construction time than traditional projects. Thisexperiment’s results have shown that new projects could make full use of MIMO withoutbuilding another distribution system, and this has decreased the workloads of propertymanagement companies and project reconstructions. |
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