大规模MIMO异构网络的干扰管理方案研究

项目名称： 大规模MIMO异构网络的干扰管理方案研究

项目编号： No.61501372

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 牛进平

作者单位： 西北大学

项目金额： 19万元

中文摘要： 大规模MIMO和密集组网技术是5G移动通信发展的两个关键技术，二者结合组成的大规模MIMO异构网络可以大大地提升系统的频谱效率。但是，大规模MIMO宏小区和密集组网引入的微小区之间存在干扰，是限制系统性能的主要因素之一。针对此问题，本申请拟对大规模MIMO异构网络的干扰管理方案做深入研究，具体包括：第一，根据用户在小区中的分布会影响系统干扰的问题，提出基于用户分类的干扰避免方案；第二，结合大规模MIMO具有较高空域自由度的特点，提出基于空域自由度利用和多用户资源分配的干扰协调方案；第三，通过小区间的协作，提出基于协作的干扰利用方案，合理地利用干扰。通过以上研究，有效地管理大规模MIMO异构网络中的干扰，提高网络容量，促进系统的实际应用。

中文关键词： 无线通信；干扰管理；MIMO；异构网络

英文摘要： Massive MIMO and network densification are two key techniques in 5G wireless mobile communication systems. Higer system spectrum efficiency can be obtained by combining these two shemes, called massive MIMO heterogeneous networks (HetNets). However, the system capacity is significantly limited by the interference among the macro massive MIMO cells and small cells. Therefore, this proposal will focus on the interference management schemes in massive MIMO HetNets. Firstly, an interference avoidance scheme based on users classification will be proposed according to the fact that the interference is affected by users distributioin; secondly, by making full use of higher degree of freedom (DoF) in the spatial domain of massive MIMO systems, an interference coordination scheme will be proposed based on spatial DoF utilization and resource allocations; Finally, an interference utilization scheme will be proposed to expoit the interference effectively by coordination among cells. By doing the research above, interference in massive MIMO HetNets can be managed effectively, and thus it improves the systems capacity and helps to improve the practical use of the system.

英文关键词： Wireless Communications;Interference Management ;MIMO;Heterogeneous Networks