| In the current rapid development of science and technology, mobile communication system earth-shaking changes happened. By original pure voice service development today support digital voice communication, data transmission business, broadband Internet access business, mobile multimedia business, visual telephone services. Mobile communication system also has a first generation of analog communications system development to now LTE mobile communication system. In2004, the3GPP held a meeting in Toronto, Canada, launched LTE (long-term evolution) project, and formulate the project time schedule, in2005to2006as the research stage (SI) from2006to2008, for working stages (WI), prepared by2010in2009listed the first commercial equipment.The3GPP LTE system, put forward by OFDM technology base by new multiple access technology, by uplink FDMA multi-access technologies SC-using OFDM technology, descending link, and introduces the multiple-input multiple-output (MIMO) technology. Improved the system spectrum efficiency, restrain the interference between users in the district, which greatly increased the system capacity, but impossible district interference between the problem has become more serious. So in order to solve the problem, people between zones interference is proposed based on frequency multiplexing and resource management between zones interference suppression of techniques, including interference random, interference reconstruction delete and soft frequency multiplexing technique.Based on the study of the multiple hops relay technology based on the advantages of power control, after the purpose of between zones to suppress the interference, put forward the LTE add relay node of the system, the scheme can reduce jump relay technology of residential edge users the power, increasing coverage, improve the service quality of residential edge users, and improve the system capacity, to suppress the interference between zones, and the algorithm is simulated, and the results are analyzed. |
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