Interference Analysis And Solution Of CDMA Base Station And GSM Base Station

With the rapid development of wireless communication technology and service requirements, the emergence of the second generation, third generation and fourth-generation mobile communication systems, as well as the case of the same generation mobile communications standards to coexist within the different communication systems, due to the actual construction of the station bound many conditions site location, and funding, there has been co-located base stations adjacent site or between different system construction problems. When different base stations operating simultaneously, there will be electromagnetic environment compatibility problems, how to understand and solve encountered in the actual construction of the electromagnetic compatibility problems, is the need to solve the problem.Firstly, for the different characteristics of CDMA and GSM are analyzed briefly describes the main features of a mobile communication system electromagnetic compatibility problem, given the underlying concepts. Electromagnetic interference between CDMA and GSM is mutual, this article will focus on the study of the transmission system for GSM CDMA receiving system electromagnetic interference above, and its detailed theoretical discussion and analysis. Articles from interference mechanism and interference characteristics both on the impact of electromagnetic interference on the three main GSM receiving system, and are given a mathematical model.Neighbors and co-location site two cases between CDMA and GSM transmission system receiving system as an example, were discussed the main factors affecting the level of electromagnetic interference and the variation between them, theoretically confirmed the minimum antenna ideal case isolation distance. After practice through discussion and analysis of the theoretical research, the paper finally gives a solution CDMA and GSM base station system running electromagnetic compatibility engineering applications.