Indoor Distributed Antenna System for the University of Baghdad Building

Abstract In-building solutions as investigated and implemented in this paper is a way to enable efficient usage of wireless mobile applications within different kinds of structures. This requires that sufficient coverage and capacity with good radio quality to be available inside the buildings. Although the mobile operators will cover most buildings from outdoor sites in their macro network, there is a need to provide many buildings with extended radio coverage and capacity. In-building solutions are well-proven methods for an operator to capture new traffic and new revenue streams. There are several different ways to implement in-building solutions. Dedicated radio base stations (RBSs) that are connected to distributed antenna systems (DASs) are commonly implemented solutions. These solutions provide additional capacity as well as cover all area inside different kinds of buildings. A number of different types of both RBSs and DASs are available and the solutions can be customized for different buildings and needs. In this paper, a new model for improving the performance of indoor distributed antenna systems is proposed and analyzed using passive DAS for the university of Baghdad building. In order to reduce the overall cost, the proposed designed Passive system use 1⁄2” RF cable, Omni antenna, panel antenna, splitters and Couplers. The proposed model assumed a “worst case scenario” for the location of the equipment room (Balcony of the 7th floor) which is also used for maintenance.