导频污染下大规模分布式MIMO无线传输理论与技术研究

项目名称： 导频污染下大规模分布式MIMO无线传输理论与技术研究

项目编号： No.61501113

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： 李佳珉

作者单位： 东南大学

项目金额： 21万元

中文摘要： 移动数据业务的“爆炸式”增长、频谱资源的日趋紧张以及能源消耗的快速增长对未来的移动通信系统提出了更高的要求。在目前4G系统中典型的天线配置和小区设置下，多用户MIMO和协作多用户MIMO出现了频谱和能量效率提升的瓶颈问题。通过将大规模基站天线分布式配置在小区内，由此形成大规模分布式MIMO，可以结合大规模MIMO和分布式天线两种技术的优点，在实现下一代通信系统不断增长的需求方面具有巨大的潜力，因此受到了业界的广泛关注。本项目将开展导频污染下大规模分布式MIMO无线传输理论和技术研究，以基础理论为出发点，运用信息论，对大规模分布式MIMO蜂窝系统的频谱效率和能量效率进行理论分析，揭示出系统参数和信道参数对系统性能的影响，基于天线分布式放置的特性，利用空间维度信息解决系统下行预编码和上行联合接收的复杂性问题、导频污染问题和小区间干扰问题，积极为我国未来移动通信系统提供理论基础和技术支撑。

中文关键词： 大规模分布式MIMO；导频污染；频谱有效性；天线选择；协作预编码

英文摘要： With the explosive increasing of the mobile data service, the scarcity of the spectral resource, and the rapid increasing of the energy consumption, it gives highly demand to improve the performance of the future mobile communication systems. Under the typical antenna configuration and cell setting of the current 4G systems, the bottleneck problem of multi-user MIMO and cooperative multi-user MIMO appears in improving the spectral and energy efficiency. When a very large number of antennas are distributed in the cell, large-scale distributed MIMO is established, which can combine the advantages of both massive MIMO and distributed antenna techniques. It has great potential in achieving the growing demand of next generation communication systems, and received much attention of academic in recent years. In this project, we will study the transmission theory and techniques of large-scale distributed MIMO with pilot contamination. Choosing basic theory as a starting point, using information theory, we will give the theoretical analysis of the spectral efficiency and energy efficiency of large-scale distributed MIMO cellular systems, and reveal the impact of the system parameters and channel parameters on the system performance. Based on the characteristics of distributed antenna locations, by using the spatial dimension information, we will study the downlink precoding and uplink joint receiver techniques to overcome the complexity of the large-scale distributed MIMO. We also study the techniques to overcome the problem of pilot contamination and inter-cell interference. The results of this project will provide theoretic foundation and technique support for the future mobile communication systems.

英文关键词： Large-Scale Distributed MIMO;Pilot Contamination;Spectral Efficiency;Antenna Selection;Cooperative Precoding