多小区多用户MIMO系统中干扰对齐算法研究

项目名称： 多小区多用户MIMO系统中干扰对齐算法研究

项目编号： No.U1204607

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 高向川

作者单位： 郑州大学

项目金额： 30万元

中文摘要： 在下一代无线网络中将广泛采用多天线（MIMO）技术，利用空间复用和具有多用户分集增益的多用户MIMO(MU-MIMO)技术以提供更高的频谱效率而备受关注,但更易受小区间多天线系统的同频干扰，特别是小区边缘用户，现有的干扰抑制技术已不能很好地解决该问题。干扰对齐技术（IA）有效地解决了上述问题，颠覆了通信网络干扰受限的传统理论，但目前对多小区多用户MIMO场景下IA技术的研究还不完善，还有很多基础性和关键性的问题有待解决。本项目针对该系统中IA技术展开研究，根据系统特性，结合IA的一般化原理，抓住系统配置设计和闭式解构造之间紧密关联的视角，在普适场景下挖掘基于最小系统配置实现最优IA的新理论方法，开拓实现IA的新思路，突破干扰对齐压缩比及闭式解构造的难题，完善该系统下干扰对齐的理论体系，丰富其实现方法。研究成果将有利于提高系统空间资源效率、抑制小区间干扰，提升系统容量和频谱利用率。

中文关键词： 干扰对齐；系统配置；闭式解；自由度；反馈拓扑

英文摘要： In the next generation of the wireless network, the multi-antennas ( multiple input multiple output, MIMO)technology will be widely adopted，and multi-user MIMO (MU-MIMO) technology with the spatial multiplexing and the multi-user diversity gain is paid more attention for higher spectrum efficiecy, but it is easier interferenced by the multi-antennas system in the other cell, especially the cell edge users, and the available technologies can not slove the problem well. The interference alignment technology (IA) solved the above problem and changed the traditional theory about the network which is limmited by the interference. However, the IA technology in the multi-user MIMO of the multi-cell system is not perfect, there remains a lot of the basic theory and key problems to be solved. According to the system characteristics and combined with the generalized principle of the IA, this project focuses on the IA of the multi-user MIMO of the multi-cell system. Based on the related perspective between the design of the system configuration and the structure of the the closed form solution, and excavate the new theory about the optimum interference alignment based on the minimum system configuration for the general universal scenarios, open up the new idea and breakthrough the structure for the compression ratio and t

英文关键词： Interference Alignment；System Configuration；Close-form Solution；Dgree of Free Dom；Feedback Topology