上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (06): 900-904.

• 无线电电子学、电信技术 • 上一篇    下一篇

一种用于MIMO组簇系统的自适应预编码技术

李秀娜，罗汉文，丁铭，刘伟，马继鹏   

  1. （上海交通大学 电子信息与电气工程学院， 上海 200240）
  • 收稿日期:2011-06-04 出版日期:2012-06-28 发布日期:2012-06-28
  • 基金资助:

    国家科技重大专项资助项目（2011ZX0300100201）

An Adaptive Precoding Technology for MIMO Cluster System

 LI  Xiu-Na, LUO  Han-Wen, DING  Ming, LIU  Wei, MA  Ji-Peng   

  1. (Department of Electronics and Communication Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-06-04 Online:2012-06-28 Published:2012-06-28

摘要： 摘要：  针对多小区内多输入多输出（MIMO）的组簇系统，提出了一种有效提升系统性能的预编码技术.该技术根据相邻时隙内用户信道状态信息变化程度，决定每个用户在两种预编码下的码字.中心处理节点为每个小区自适应分配预编码后，使用1 bit指示符号通知各小区基站所选定的预编码.仿真结果表明，本文中提出的自适应预编码技术与传统技术相比，可以较大地提升系统吞吐量，同时有效地降低了系统后台的反馈开销.
关键词： 中图分类号： 文献标志码：  A
An Adaptive Precoding Technology for MIMO Cluster System
LI Xiuna,LUO Hanwen,DING Ming,LIU Wei,MA Jipeng
Abstract： An efficient precoding technology was proposed for multicell multipleinput multipleoutput (MIMO) system consisting of several clusters. According to the variation of channel state information (CSI) in two contiguous slots, the central processor determines users’ precoding codeword between two precoding schemes and uses extra 1 bit overhead to indicate the selection scheme. The simulation results show that the proposed scheme can achieve better throughput performance and cut down the sum backhaul overhead than the traditional schemes.
Key words： multicell; intracluster interference; adaptive precoding; signaltonoise ratio

关键词:  , 多小区, 簇内干扰, 自适应预编码, 信噪比

Abstract: An efficient precoding technology was proposed for multicell multipleinput multipleoutput (MIMO) system consisting of several clusters. According to the variation of channel state information (CSI) in two contiguous slots, the central processor determines users’ precoding codeword between two precoding schemes and uses extra 1 bit overhead to indicate the selection scheme. The simulation results show that the proposed scheme can achieve better throughput performance and cut down the sum backhaul overhead than the traditional schemes.
 

Key words: multi-cell, intra-cluster interference, adaptive precoding, signal-to-noise ratio

中图分类号: