| Code Division Multiple Access (CDMA) is a brand-new and mature wirelesscommunication technology developed from spread spectrum technique which is abranch of digital communication technology. The principle of CDMA technology isbased on the spread spectrum technology, in which signal data with a certain signalbandwidth is transmitted by carrier modulating, under the premise that it is modulatedby a high-speed pseudo random code with a much larger bandwidth, which expandsthe bandwidth of the original signal. The receiver uses the same pseudo random codeto manage the wideband signal to realize information communications bytransforming the wideband signal into narrow-band signal of original informationdata.This thesis firstly introduces and analyzes the system structure and mainfunctions of CDMA network. Secondly, it deeply explores the network planningmethods of CDMA, and detailedly describes the planning of network scale andstructure, as well as the building of new base station, along with conclusions. Thethesis also makes further discussions of the general methods of CDMA networkoptimization, formulating its process, expounding the human resource (HR)arrangement, improvement of cycle time, and ways of analysis. It concludes theoptimized essential factors and critical measures of various possible problems thatmight be met in CDMA network optimization. Based on the above researches, thisthesis states the process and methods of CDMA network optimization by practicingthe optimization scheme in En Shi mountain area. During the practical work ofoptimization, works as present network analysis, policy orientation, projectestablishment, and program implementation have been carried out in En Shi mountainarea, which reflects the characteristics of CDMA wireless network optimization.Lastly, this thesis analyzes and evaluates the results of CDMA networkoptimization in En Shi mountain area, as well as shares the experience and gives someadvice of the particular network optimization for the mountain area. |
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