摘要
多天线技术可在不额外增加功率和带宽的条件下成倍提升无线资源的频谱效率,改善通信质量.本文提出了一种适合于室内分布系统场景的多用户MIMO下行链路空分多址算法.首先通过测量不同用户在不同通道上的功率来计算空分多址用户间的信号干扰比值,然后根据该信号干扰比值进行初步的空分多址判决,最后对空分多址用户进行干扰补偿.仿真结果表明该空分多址算法可以大幅提升室内分布系统的容量.
Multi antenna technology can improve the spectrum efficiency of wireless resources and improve the quality of communication under the condition of no additional power and bandwidth. In this paper,a multi user MIMO downlink space division multiple access（ SDMA） algorithm is proposed,which is suitable for indoor distributed system scenarios.First,ratio of the signal power to interference power was computed by measuring the power of different users in different channel.And then,a preliminary decision of whether to use SDMA was done according to the ratio. Finally,SDMA interference compensation was computed for scheduling.Simulation results show that the space division multiple access algorithm can significantly improve the capacity of indoor distribution system.
出处
《南华大学学报（自然科学版）》
2016年第2期44-49,共6页
Journal of University of South China：Science and Technology
基金
国家自然科学青年基金资助项目(61401193)
湖南省教育厅科学研究基金资助项目(15C1195)
南华大学博士科研启动基金资助项目(2013XQD03)
关键词
多用户MIMO
室内
空分多址
multi user MIMO
indoor
space division multiple access
