期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
期号：VISHWATECH
页码：312
出版社：S&S Publications
摘要：A lot of schemes are proposed to exploit the transmit diversity. Distributed antenna systems (DAS)constitute one of the most attractive schemes to efficiently achieve the stringent quality of service demands of nextgeneration wireless networks. In this project, it is investigated MISO assisted different transmission techniques used inDAS and the performance of downlink multi-cell DAS in terms of capacity improvement using SINR for differenttransmission scheme. A system level simulation tool is used to analyze the performance [1].The aim of this paper is to assess the applicability of a Repeater connected to a Distributed Antenna System (DAS)for improving indoor capacity in UMTS radio network (2100 MHz). A guarantee of sufficient coverage and capacityfor In-building areas constitutes a considerable issue in topology planning, because in both links, indoor users producehigh interference to the outdoor network due to significant indoor propagation losses. Presented configurationeffectively exploits effectively a Repeater system that amplifies the signal from the outdoor network and delivers it forindoor locations through distributed antenna system. Implementation of the analyzed Repeater system isstraightforward as it does not require usage of separate carrier. Moreover, any separate scrambling codes do not have tobe dedicated either. Conducted measurement campaigns reveal improvement of radio conditions due to Repeaterimplementation that results in 35% gain of downlink capacity for indoor locations.
