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应用科学学报 ›› 2005, Vol. 23 ›› Issue (4): 359-363.

• 论文 • 上一篇    下一篇

基于多径时延跟踪的MIMO-OFDM系统信道估计

井雅, 王东明, 陈明, 程时昕   

  1. 东南大学移动通信国家重点实验室, 江苏南京 210096
  • 收稿日期:2004-04-15 修回日期:2004-09-17 出版日期:2005-07-31 发布日期:2005-07-31
  • 作者简介:井雅(1978-),女,河南南阳人,博士生,E-mail:Jingya@seu.edu.cn;陈明(1968-),男,江苏扬州人,教授,博导,E-mail:chenming@seu.edu.cn;程时昕(1936-),男,上海人,教授,博导,E-mail:sxcheng@seu.edu.cn

Channel Estimation for MIMO-OFDM Systems Based on Parametric Channel Modeling

JING Ya, WANG Dong-ming, CHEN Ming, CHENG Shi-xin   

  1. National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2004-04-15 Revised:2004-09-17 Online:2005-07-31 Published:2005-07-31

PDF

328

被引次数

21

摘要： 针对MIMO-OFDM系统,提出了一种低复杂度的基于多径时延跟踪的信道估计算法,并分析了信道估计的均方误差和计算复杂度.分析和仿真结果表明,这种算法通过对多径的跟踪降低了需要估计参数的维数,从而提高了信道估计的性能,并且降低了运算复杂度.

关键词: 稀疏信道, 多输入多输出-正交频分复用, 信道估计, 多径时延跟踪

Abstract: A low complexity channel estimation algorithm based on the tracking of multipath time delays is presented for broadband multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems.The estimator's performance and computation complexity is analyzed.Simulation results show that the tracking of multipath time delays can improve the channel estimation performance and reduce the computation complexity by decreasing the dimension of estimated parameters.

Key words: MIMO-OFDM, channel estimation, sparse channel, multipath time delays tracking

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