期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

一种基于EM算法的MIMO-OFDM系统信道估计技术 被引量：2

An EM-Based Channel Estimation Algorithm for MIMO-OFDM Systems
在线阅读 下载PDF
导出
摘要 从提高多输入多输出正交频分复用(M IMO-OFDM)系统频谱利用率的目的出发,提出了一种改进型的基于EM(Expectation Maxim ization)算法的信道估计技术。仿真结果表明,改进后的算法可以显著提高频谱利用率,同时保持原算法的精度。 An improved EM - based channel estimation algorithm for MIMO - OFDM systems is introduced in order to obtain higher frequency efficiency. The simulation result shows that the new algorithm remarkably improves the frequency efficiency and keeps the precision of the old algorithm at the same time.
作者 仲国栋 孙军 杨峰
机构地区 上海交通大学图像通信与信息处理研究所
出处 《电讯技术》 2006年第3期48-51,共4页 Telecommunication Engineering
基金 国家高技术研究发展计划(863计划)重大专项项目(2003AA123310)
关键词 无线通信 信道估计 正交频分复用 多输入多输出 EM算法 wireless communication channel estimation orthogonal frequency division multiplexing multiple - input multiple - output expectation maximization （EM） algorithm
分类号 TN911.2 [电子电信—通信与信息系统]
  • 相关文献

参考文献9

  • 1Stuber G L,Barry J R,McLaughlin S W,et al.Broadband MIMO-OFDM Wireless Communications[J].Proceedings of the IEEE,2004,92(2):271-294.
  • 2Hongwei Yang.A road to future broadband wireless access:MIMO-OFDM-Based air interface[J].IEEE Communications Magazine,2005,43(1):53-60.
  • 3Kyung Won Park,Eun Sun Choi,Kyung Hi Chang,et al.A MIMO-OFDM technique for high-speed mobile channels[C]//.The 57th IEEE Semiannual Vehicular Technology Conference(Volume 2).VTC 2003-Spring,April 2003:980-983.
  • 4Dempster A,Laird N,Rubin D.Maximum likelihood estimation from incomplete data via EM algorithm[J].J.Royal Statistical Society Series B,1977,39:1-38.
  • 5Todd K Moon.The Expectation-Maximization Algorithm[J].IEEE Signal Processing Magazine,1996,13(6):47-60.
  • 6Feder M,Weinstein E.Parameter Estimation of Superimposed Signals Using the EM Algorithm[J].IEEE Transactions Acoustics,Speech,and Signal Processing 1988,36(4):477-489.
  • 7Yongzhe Xie,Georghiades,C N.An EM-based channel estimation algorithm for OFDM with transmitter diversity[C]//.IEEE Global Telecommunications Conference(Volume 2).GLOBECOM '01,Nov.2001:871-875.
  • 8Y Xie,N Georghiades.Two EM-type channel estimation algorithms for OFDM with transmitter diversity[J].IEEE Transactions on Communications,2003,51:106-115.
  • 9Yahong Rosa Zheng,Chengshan Xiao.Simulation Models With Correct Statistical Properties for Rayleigh Fading Channels[J].IEEE Transactions on Communications,2003,51(6):920-928.

同被引文献8

  • 1Foschini G J,Gans M J. On limits of wireless communications in fading environment when using multiple antennas [J]. IEEE Wireless Personal Communications, 1998, 6(3) :311 -335.
  • 2Ye Li, Seshadri N,Ariyavisitakul S. Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels[J]. IEEE Journal on Selected Areas in Communications, 1999,17 (3) :461 - 471.
  • 3Bolcskei Helmut, Heath Jr, Robert W, et al. Blind channel identification and equalization in OFDM- based multi-antenna systems[ J]. IEEE Transactions on Signal Processing,2002,50( 1 ) :96 - 109.
  • 4Zeng Yonghong,Ng Tung- Sang. A Semi- Blind Channel Estimation Method for Multiuser Multiantenna OFDM Systems[J]. IEEE Transactions on Signal Processing,2004,52 (5) : 1419 - 1429.
  • 5Alamouti S M. A simple transmit diversity scheme for wireless communications[ J]. IEEE Journal on Selected Areas in Communications, 1998,16 : 1451 - 1455.
  • 6侯晓赟,崔景伍,郑宝玉.协同通信系统中基于EM算法的半盲信道估计与迭代检测[J].南京邮电大学学报（自然科学版）,2008,28(2):30-33. 被引量：1
  • 7张剑,贺知明,汪学刚.基于信道分布空间的OFDM信道半盲估计方法[J].信号处理,2009,25(1):69-71. 被引量：1
  • 8胡高平,程艳.基于EM算法的MIMO OFDM系统信道估计[J].中国传媒大学学报（自然科学版）,2009,16(2):21-24. 被引量：2

引证文献2

二级引证文献1

电讯技术
2006年 第3期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部