CAJ | 학술논문

分布式天线系统(DAS)的天线位置直接决定着系统无线覆盖的可靠性和高效性性能.讨论如何在满足用户通信质量需求的前提下,通过优化天线位置来提高天线效率,使系统更加绿色.首先推导了DAS基于无线覆盖可靠性和高效性的天线效率公式,并提出基于这两种天线效率的相应天线位置优化方法.分析和仿真结果表明,通过优化天线位置,可以减少小区内的天线数目或最小化其平均最小接入距离,以提高天线效率、最小化系统总发射功率和降低布网成本.
분포식천선계통(DAS)적천선위치직접결정착계통무선복개적가고성화고효성성능.토론여하재만족용호통신질량수구적전제하,통과우화천선위치래제고천선효솔,사계통경가록색.수선추도료DAS기우무선복개가고성화고효성적천선효솔공식,병제출기우저량충천선효솔적상응천선위치우화방법.분석화방진결과표명,통과우화천선위치,가이감소소구내적천선수목혹최소화기평균최소접입거리,이제고천선효솔、최소화계통총발사공솔화강저포망성본.
The antenna location of the distributed antenna system (DAS) determines the system's performance. Under the condition of satisfying the users' needs for QoS, the DAS antenna efficiency was first defined and then different methods were adopted to optimize the antenna position so as to reduce the number of antennas and/or minimize the average minimum access distance, thus improving the antenna efficiency and ultimately reducing the cost and the total transmission power of the system. The analysis and simulation results show that the methods have achieved excellent performance.