LTE-A上行CoMP软信息合并接收算法  

Soft Information Combination Algorithm of Uplink CoMP in LTE-A System

作　　者：郭健[1,2] 郑迺铮[1] 谈振辉[1] 

机构地区：[1]北京交通大学宽带无线移动通信研究所,北京100044 [2]诺基亚西门子通信技术(北京)有限公司,北京100007

出　　处：《电信科学》2012年第8期53-57,共5页Telecommunications Science

基　　金：国际科技合作计划子课题"未来宽带无线接入关键技术研究"基金资助项目(No.2010DFB10410)

摘　　要：为了提高边缘用户的吞吐量和服务质量,LTE-A系统引入了协作多点传输(coordinated multi-point transmission,CoMP)技术。针对LTE-A上行CoMP联合处理技术,在原始数据合并和硬判决动态选择算法的基础上,提出了一种软信息合并接收算法。理论分析和系统级仿真证明,其结合了两种传统算法各自的优点,吞吐量增益介于两种传统算法之间,极大地降低了X2链路负载,且充分利用了各个eNode B的基带处理能力,提高了网络的健壮性和容错性。To increase throughput and QoS of cell edge users, LTE-A system introduces the coordinated multi-point transmission technology. In this paper, a soft information combination algorithm is proposed based on joint reception and hard decision dynamic cell selection for uplink CoMP of LTE-A system. Theoretical analysis and system level simulation result show that this algorithm combines the advantages of two traditional algorithms. The user throughput gain of soft information combination is between both, but it dramatically reduces the load of X2 and makes full use of base-band processing capability of each eNode B, therefore it increase in robustness and fault tolerance effectively.

关 键 词：LTE-A 上行链路 协作多点传输 联合处理 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]