在空间相关Rice信道下的一种基于非码本的预编码方法在LTE下行系统中的应用  

The Application of a Precoding Method Based on Non-Codebook in LTE Downlink Under Spatial Correlated Rice Channel

作　　者：谢文武[1,2] 刘守印[1] 

机构地区：[1]华中师范大学物理科学与技术学院,湖北武汉430079 [2]上海晨思电子科技有限公司,上海201210

出　　处：《电子学报》2016年第4期983-987,共5页Acta Electronica Sinica

摘　　要：本文所提出的预编码生成方法适合在TD-LTE系统中工作,包括基于信道互易性获取信道状态信息模块,能量分配模块,波束形成模块.该方法充分利用了TDD系统的信道互易性特性,获取下行信道的信道状态信息,并使用基于非码本的预编码方式来增强传输的抗干扰性能,提升小区覆盖范围.与单纯考虑无视距LOS(Line-Of-Sight)分量的衰落信道不同,本文所提出的是在接收端天线之间存在空间相关的下行MIMO系统中,针对拥有LOS分量的莱斯(Rice)信道发射机的预编码设计方案.该方案可以保证非码本预编码算法的快速收敛,且保持较低的计算复杂度.This paper proposed a method to generate precoding, which is applicable to the TD-LTE system. This method contains three parts ： channel state information （CSI） model, energy distribute model, and beam-forming model. This scheme fully uses the character of exchanging channel for the TDD system, which can obtain the CSI of the downlink chan- nel, and enhances the performance of anti,interference by using the precoding based on the non-codebook. Furthermore, it can enlarge the range of the serving cell. The background of this paper is LTE downlink system equipped with these spatial-cor- related receive antennas, where a transmitted precoding method is designed for Rice channel with LOS. This method can keep the precoding algorithm based on non-codebook at a quick convergence speed with low calculation complexity.

关 键 词：预编码 LTE 相关Rice信道 非码本 

分 类 号：TN911[电子电信—通信与信息系统]