Research Of Co-Existing Interference Of WCDMA With Other Wireless Communication Systems

With the development of mobile communication technology, the ministry of industry and information technology in our country formally issued three 3 G licences in January 7, 2009. China mobile's TD-SCDMA licenses, China telecom for CDMA2000, WCDMA are obtained by China unicom. This marks China's formally entered the 3 g era.The domestic 3 G users are still growing, however, represented by the GSM 2 g system users in domestic also occupies a large share of, and continues to grow.2 G and 3 G systems will inevitably appear the situation of long-term coexistence, as well as the new 4 G technology put into use, it will lead to the existence of the interference problem between different wireless communication systems.This thesis aims at the research of WCDMA and other wireless communication systems co-existing interference. Paper introduces the relevant standard progress and key technology of the wireless communication system,analysis principle of the interference between the wireless communication systems. Emphatically from the engineering point of view,WCDMA in wireless communication system interference problem is handled and analysed. Paper analyzes the process of WCDMA system interference, interference category judgement and positioning, the 2 g and 3 g system are studied in the specific case, and puts forward solving methods, presents the corresponding project implementation solution. Research has carried on the field data collection work.The prediction data were compared with actual network test data, to draw the conclusion by comprehensive analysis. The subject can provide the reference solution for the future study other mobile communication standard in coexistence interference problem in wireless communication system.