计算机工程 ›› 2012, Vol. 38 ›› Issue (7): 22-24.doi: 10.3969/j.issn.1000-3428.2012.07.008

• 博士论文 • 上一篇    下一篇

结合凸优化的宽带MIMO系统接收天线选择

吕西午,刘开华,马永涛,于洁潇   

  1. (天津大学电子信息工程学院,天津 300072)
  • 收稿日期:2012-01-17 出版日期:2012-04-05 发布日期:2012-04-05
  • 作者简介:吕西午(1985-),男,博士研究生,主研方向:无线通信,信道建模;刘开华,教授、博士、博士生导师;马永涛、于洁潇,讲师、博士
  • 基金项目:
    新一代宽带无线移动通信网科技基金资助重大项目(2009ZX03007-003);天津市科技支撑计划基金资助重点项目(09ZC KFGX29200)

Receive Antenna Selection in Broadband MIMO System Combining with Convex Optimization

LV Xi-wu, LIU Kai-hua, MA Yong-tao, YU Jie-xiao   

  1. (School of Electronic and Information Engineering, Tianjin University, Tianjin 300072, China)
  • Received:2012-01-17 Online:2012-04-05 Published:2012-04-05

摘要: 研究宽带多输入多输出(MIMO)系统中的接收天线选择技术。基于添加循环前缀辅助的宽带MIMO系统数学模型,利用邻近子载波间的相关性,设计次优的天线选择准则,并对结合凸优化方法的接收天线选择算法进行改进。仿真结果表明,次优准则可以获得与最优准则几乎相同的性能,改进的接收天线选择算法以增加较少计算量为代价,提高了系统的容量性能。

关键词: 宽带MIMO系统, 接收天线选择, 凸优化方法, 子载波相关

Abstract: Receive Antenna Selection(RAS) in broadband Multiple Input Multiple Output(MIMO) system is studied in this paper. Based on the mathematical model for cyclic prefix assisted broadband MIMO system, a suboptimal antenna selection criterion with the goal of maximizing the capacity is designed by exploiting the correlation between neighboring subcarriers. Then the RAS algorithm combining with convex optimization method is analyzed and improved. Simulation results show that suboptimal criterion has almost the same performance as optimal criterion, and the improved RAS algorithm can effectively enhance system performance with small increase of computation amount.

Key words: broadband Multiple Input Multiple Output(MIMO) system, Receive Antenna Selection(RAS), convex optimization method, subcarrier correlation

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