| 基于子空间的OFDM系统半盲信道估计研究 |
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| 引用本文： | 兰海燕,赵旦峰.基于子空间的OFDM系统半盲信道估计研究[J].应用科技,2007,34(1):17-20. |
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| 作者姓名： | 兰海燕 赵旦峰 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 提出了一种基于子空间的改进OFDM系统半盲信道估计算法,利用信号子空间和噪声子空间的正交特性将子空间分解,实现了色噪声背景下高效半盲信道估计.仿真结果表明,在时变信道下具有更好的收敛性,体现了算法好的稳定性以及快速跟踪系统变化的性能.
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| 关 键 词： | 半盲 信道估计 子空间 色噪声 |
| 文章编号： | 1009-671X（2007）01-0017-04 |
| 收稿时间： | 2006-09-26 |
| 修稿时间： | 2006-09-26 |
Study of subspace-based semi-blind channel estimation for OFDM systems |
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| LAN Hai-yan,ZHAO Dan-feng.Study of subspace-based semi-blind channel estimation for OFDM systems[J].Applied Science and Technology,2007,34(1):17-20. |
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| Authors: | LAN Hai-yan ZHAO Dan-feng |
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| Institution: | College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | This paper presents an improved semi-blind channel estimation algorithm in the OFDM system based on subspace,which uses the orthoganality of signal subspace and noise subspace to decompose the subspace,realizing semi-blind channel estimation with great efficiency under the background of color noise.The simulation results suggest that the convergence rate is faster in the time varying channel,showing the good stability and fast tracking ability. |
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| Keywords: | semi-blind channel estimation subspace color noise |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
