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Channel estimation for MIMO-OFDM systems in rapid fading channels
  • ISSN号:1006-1010
  • 期刊名称:《移动通信》
  • 时间:0
  • 分类:TN91[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构:[1]Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, P. R. China, [2]College of Marine Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China
  • 相关基金:Project supported by the National High-Technology Research and Development Program of China (Grant No. 2003AA123- 31007), and the National Natural Science Foundation of China (Grant No.60272079)
中文摘要:

为直角的频率部门 multiplexing 与的一条隧道评价途径多重输入、多重产量(MIMO-OFDM ) 在快速的褪色,隧道被建议。这条途径联合基于的一个最佳的训练序列的优点最少平方(OLS ) 算法和期望最大化(他们) 算法。在训练的块的隧道基于 OLS 算法用一个评估者被估计。为了为快瑞利补偿在数据褪色,堵住,一个时间领域基于 Gaussian 插值过滤器被介绍。而且,一个他们算法被介绍由一些重复改进隧道评价的表演。模拟证明这个隧道评价途径罐头有效地追踪快速的隧道变化。

英文摘要:

A channel estimation approach for orthogonal frequency division multiplexing with multiple-input and multipleoutput (MIMO-OFDM) in rapid fading channels is proposed. This approach combines the advantages of an optimal training sequence based least-square (OLS) algorithm and an expectation-maximization (EM) algorithm. The channels at the training blocks are estimated using an estimator based on the OLS algorithm. To compensate for the fast Rayleigh fading at the data blocks, a time domain based Gaussian interpolation filter is presented. Furthermore, an EM algorithm is introduced to improve the performance of channel estimation by a few iterations. Simulations show that this channel estimation approach can effectively track rapid channel variation.

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期刊信息
  • 《铝镁通讯》
  • 主管单位:中国有色金属工业协会
  • 主办单位:中国铝业郑州研究院有限公司
  • 主编:张香利
  • 地址:郑州市上街区济源路82号
  • 邮编:450041
  • 邮箱:zyy_dp@rilm.com.cn
  • 电话:0371-68918503
  • 国际标准刊号:ISSN:1006-1010
  • 国内统一刊号:ISSN:11-2074/TF
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:294