The Design And Research Of Multiple Indoor Distributed Communication System

The number of the subscribers has been increasing rapidly, and the research of new wireless services has been made in recent years. How to use the limited resource effectively and to improve system capacity has been the pivotal matter of the third generation wireless communication. Wireless network planning is an important procedure in 3G network.3G network is now extensively used in a lot of countries, at the same time,China has constructed many testing network. More than seventy percent 3G traffic come from indoor environment; the construction of indoor contribution system can improve the coverage, quality and capacity effectively. Indor coverage analyze is the most significant factor in construction of 3G network.3G is the abbreviation of the 3rd Generation,which refers to the third generation mobile communication technology.Compared with the second generation of digital handset for GSM,TDMA,3G handset generally refers to the new generation of mobile communication system that combines wireless communication and multimedia technology.WCDMA inherits the GSM's characteristic of high standardization level and good open, and makes great progress in standardization.The network operation enterprise can introduce GPRS network equipments and new services to GSM network,cultivate data service customers,and gradually transit to 3G.The paper raise several key issues in the Multiple Indoor Distributed Communication System and get some useful conclusions for the engmeermg.At first paper presents the necessity of the construction of integrated indoor coverage system and raises 3 key issues what must be solved in the engineering.Then the paper classifies the Multiple indoor coverage system and shows all the parts consisting of the network.And then the paper describes the interfere between the multiple communication systems and give the causes resulting in it. After it the paper gives us some measures to avoid them. And focuses on the application of the un-passive apparatus in the system.Afterwards The paper mainly completes the emulation of the WCDMA cell capability in indoor environment under the single service and gives some useful conclusions to practical works.At last the paper introduces several forecast models used in indoor coverage network plan.As defined by 3GPP 3G has used some new technologies to improve its radio access ability. These new technologies have brought about vast changes within the network planning, implementation, and optimization.The planning of a 3G network is now a complex balancing act between coverage and capacity simultaneously. This thesis consists of two parts: firstly,using the static method, it is possible to calculate the distance of base station's coverage. Site densities and actual locations can be found. Secondly, static simulations can be used for regional validation, it is important to get the relationship between capactiy and coverage for uniform service .