CoMP的拓扑结构和预编码技术
首发时间:2009-10-21
摘要:协作多点(CoMP)技术已成为LTE-A的关键技术之一。目前,针对CoMP的研究已经广泛展开。CoMP的拓扑结构,不同于传统的蜂窝结构。它通过多个基站之间协作,抑制共道干扰,提升蜂窝边缘用户的容量。为了去除共道干扰,在协作基站端采用预编码技术,并根据信道质量指示(CQI)和信道状态信息(CSI)来自适应的选择协作的基站集和用户调度。本文用数学公式推导了预编码的基本过程,并提供了基站选择和用户调度的一般思路。
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The topology structure and precoding technology of the CoMP system
Abstract:Coordinated multi-point (CoMP) transmission and reception has been considered a key technology by LTE-Advanced. Currently, a lot of research about CoMP has been done extensively. The topology of the CoMP is different from the traditional cell structure. It can suppress the co-channel interference and promote the throughout of the edge of the cell by coordination among many base stations. To remove the co-channel interference, the precoding is performed at the coordinated base stations; the set of the coordinated base stations is self-adapting selected and the scheduling is self-adapting completed according to the channel quality indication and channel state indication. The basic process of the precoding is deduced by using mathematic formula and the common methods for the selection of base stations and scheduling is presented at this paper.
Keywords: Coordinated multi-point (CoMP) precoding channel quality indication channel state indication
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