Analysis Of Mutual Interference For 2G/3G Network Coexistence System

At present, China's telecommunications industry has entered the era of 3G, However, the 2G system such as GSM in domestic communications market is far from saturated, which lead the problems such as the interference between 2G/3G,3G/3G systems when they are coexist. The radio resource is become increasingly tense, so the mobile communication network radio frequency interference problem more and more attention has been paid.The mutual interference problems of network coexistence system are studied as follows:Firstly, the principles, categories and methods of computation of mutual interference for the 2G/3G systems are explored in this thesis.Then, the feasibility of the coexistence of the GSM system and the TD-SCDMA system, GSM system and WCDMA systems and CDMA2000 1x and CDMA2000 1xEV-DO system re demonstrated by using uncertainty calculation methods.Finally, based on the wireless network performance parameters provided by 3GPP and 3GPP2 protocol, the simulations of the system coverage and capacity are completed by using static simulation method of Monte Carlo, and the corresponding adjacent channel interference ratio (ACIR) and the correspondence between the cell radius and system capacity are obtained, ultimately.