| 一种结合空时编码的导频辅助信道估计方法 |
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| 引用本文： | 李雪利,陈力,龙自强.一种结合空时编码的导频辅助信道估计方法[J].现代电子技术,2007,30(9):6-8. |
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| 作者姓名： | 李雪利 陈力 龙自强 |
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| 作者单位： | 汕头大学,广东汕头,515063 |
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| 摘 要： | 多输入多输出-正交频分复用(MIMO-OFDM)作为一种高速率无线通信的有效方式,其信道估计技术具有非常重要的位置。将OFDM技术与基于发射分集的空时格码相结合,构造了一个基于空时格码的OFDM模型。基于MIMO-OFDM系统的导频设计准则及特性,提出了一种空时编码OFDM系统中基于导频的辅助信道估计方法。仿真实验结果表明信道估计的性能接近理想信道情况下的性能。
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| 关 键 词： | 空时网格编码 MIMO-OFDM导频序列 信道估计 |
| 文章编号： | 1004-373X（2007）09-006-03 |
| 收稿时间： | 2006-09-10 |
| 修稿时间： | 2006年9月10日 |
A Pilot Symbol Aided Channel Estimation for Space-Time Coding System |
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| LI Xueli,CHEN Li,LONG Ziqiang.A Pilot Symbol Aided Channel Estimation for Space-Time Coding System[J].Modern Electronic Technique,2007,30(9):6-8. |
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| Authors: | LI Xueli CHEN Li LONG Ziqiang |
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| Affiliation: | Shantou University,Shantou,515063 ,China |
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| Abstract: | Multi-input Multi-output Orthogonal Frequency Division Multiplexing(MIMO-OFDM) systems use an efficient high-rate wireless communication method that is very important to channel estimation.This paper combines space-time trellis code based on space diversity with OFDM technique and constructs an model based on space-time trellis code and OFDM technique.At the same time,the pilot design principle is applied to the MIMO-OFDM system to develop channel estimation algorithm based on pilot sequence for multipath channels.The simulation results demonstrate that the performance of channel estimation approach to that of ideal channel. |
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| Keywords: | space-time trellis code MIMO-OFDM pilot symbols channel estimation |
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