摘要
下行增强MIMO是LTE-Advanced的关键技术之一,文章讨论了LTER8和R9的多用户MIMO的传输模式,并且就LTE-Advanced中的多用户MIMO的主要问题进行了讨论。比较了各种可能的导频设计,下行控制信令、反馈及增强的码本设计方法,探讨了多用户MIMO适用的场景以及每个用户支持多于两个layer的可能性,并介绍了标准化进展情况。
Downlink enhanced MIMO is one of the key technologies for LTE-Advanced. In this article, LTE R8 and R9 of the multi-user MIMO transmis-sion model have been discussed, and the multi-user MIMO major issues based on LTE-A have been discussed. Various plans for design of downlink control, signaling pilot, feedback and enhanced code design have been compared. The application scenarios of multi-user MIMO and the possibilities of supporting more than two layer for each user have been discussed. At last, the progress of standardization has been introduced.
出处
《现代电信科技》
2010年第2期95-99,105,共6页
Modern Science & Technology of Telecommunications
