The Design And Optimization Of LTE FDD Wireless Network System

In recent years, wireless communication presents the diversification trend。As aresult the traditional mobile communication technology is facing the challenges ofWiFi and WiMAX wireless broadband accessing technology and the competition ofthe increasingly fierce market.So the UTRA long-term Evolution (Long TermEvolution, LTE) was studied. The results of this research can make mobilecommunication lower cost、the lower time delay、faster data rate、a bigger systemcapacity and wider coverage. In this environment, how to better and fasterconstruction LTE network become the present stage of all personal engaging in andconcerning LTE network planning and construction.Due to the LTE is the emerging technology, LTE FDD in terms of China’s currentproduction has many inexperienced and the solution is still not perfect. Further studyon LTE has important significance.This paper expounds the development trend of LTE wireless network both athome and abroad and introduces basic principle and key technology of LTE FDDsystemfrom the basic theory of mobile communication。At last this paper discusses thenecessity and feasibility of the LTE wireless network optimization. A certain city ofLTE FDD wireless network system design is given concretely. It includes LTE FDDwireless network design principles and objectives, LTE FDD covering constructionscheme design, a scheme design of LTE FDD base station capacity allocation, thedesign of LTE FDD feedback line, frequency plan and interference coordination, andthe interface configuration and GPS synchronization.It simulaties the FDD-LTE wireless network of a certain city according to theuse of wireless network simulation platform on the basis of above work andintroduces specificly the current network status, specific targets, adjusting principlesetting up the simulation parameters. I t are provided for the weak coverage problem,formed to meet design goals of the simulation program. According to the results ofsimulation，adjustment measures are provided for the weak coverage problem and itformed to meet design goals of the simulation program.This paper discusses the clusters optimize work content of the base station andprocess finally. It has carried on the optimization of weak coverage、interference、 switch and PCI. It is good to meet the demand of wireless network system after theoptimization through actual operation.