5G非正交多址技术关键问题研究  

Research on Key Issues of 5G Non-Orthogonal Multiple Access Technology

作　　者：刘志航 田宇昊 袁伟娜[1] LIU Zhihang;TIAN Yuhao;YUAN Weina(School of Information and Science and Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学信息学院

出　　处：《自动化仪表》2019年第8期83-88,共6页Process Automation Instrumentation

摘　　要：非正交多址接入(NOMA)技术是5G通信的关键技术之一。该技术采用功率域复用的方式增加用户接入数,具有较高的频谱效率和可靠性,应用前景广泛。因此,研究5G非正交多址接入技术具有相当重要的意义。尤其是对其关键问题,如用户间的资源分配和多址干扰的消除等方面的问题,更值得深入研究。分别对这两个关键问题,就国内外目前的研究进展进行了详尽的分析和探讨。从实际多用户小区的资源分配、单一的串行干扰消除技术出发,总结了目前研究中所存在的问题,并提出相关解决方案,为更好地发挥NOMA技术的性能优势、抑制多用户共享资源带来的多址干扰问题提供参考。随着研究的深入,资源分配和干扰消除两大关键问题必将得到完善的解决,非正交多址技术也会在5G通信领域中得到广泛的应用。Non-orthogonal multiple access (NOMA) technology is one of the key technologies of 5G communication.It utilizes power domain multiplexing to increase the number of users' access,which means it can achieve high spectral efficiency and reliability with wide application prospects.Therefore,it is of great significance to study NOMA technology;especially the key issues,such as resource allocation among users and interference cancellation for multiple access,deserve further study.These two key issues are analyzed and discussed in detail based on current research progress at home and abroad.Starting from the resource allocation of the actual multi-user cell and the single serial interference cancellation technology,the existing problems in the current research are summarized.The relevant solutions are proposed,which can provide a reference scheme for better exerting the performance advantages of NOMA technology and restraining the multiple access interference caused by multi-user sharing resources.With the deepening of research,these two key issues of resource allocation and interference cancellation will be perfectly solved,and non-orthogonal multiple access technology will be widely used in the field of 5G communication.

关 键 词：非正交多址接入 功率域复用 资源分配 串行干扰消除 多址干扰 误码传播 

分 类 号：TH89[机械工程—仪器科学与技术]