| Summary: | 碩士 === 中華科技大學 === 電子工程研究所在職專班 === 100 === Mobile communications network has been improved and based on the technology of ITU-R IMT-Advanced toward the fourth-generation (fourth generation, 4G), applying a new generation network capable of highly efficient and highly automated configuration to provide some new services and user mode.
In the history of development of 4G, WiMAX and Long Term Evolution (LTE) based on IEEE 802.16 has been recognized as the main two 4G systems. With the third generation mobile communication network provisioning and the fourth-generation mobile communications network technology (including WiMAX and LTE) develop real-time multimedia multicast applications,
The fourth-generation mobile communications standard established for 3GPP standard by Long Term Evolution (LTE). This system contains mini base station ( Femtocell ) which is to enhance the network capability of large-scale base station ( Macrocell ) , also it can be improved the indoor communication range . It is to ensure the communication quality at user low power base station.
However, if we want to increase the network coverage of ultra-micro base stations and large base stations, we shall find the interference from the system sites.
The research forecasts on a series of analysis, the interference of some kinds of various condition can be understand. Then, the research providing analysis methods and commend is aimed at the system parameters, frequency modulation and the interference from the system sites.
In view of the future LTE wireless broadband service for international development trends, we analyze the situation with the Femtocell and Macrocell interference scenarios, which are mainly differentiated by the network deployment, separation distances of BSs and the number of users, the frequency planning, and the maximum number of users. Then the total interference effect for the communication system can be obtained.
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