| 快速时变信道中几种自适应信道估计算法的比较研究 |
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| 引用本文： | 李媚,杨铁军. 快速时变信道中几种自适应信道估计算法的比较研究[J]. 电子科技, 2007, 0(7): 17-19,35 |
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| 作者姓名： | 李媚 杨铁军 |
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| 作者单位： | 河南工业大学,信息科学与工程学院,河南,郑州,450052;河南工业大学,信息科学与工程学院,河南,郑州,450052 |
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| 摘 要： | 主要研究了MIMO-OFDM系统中快速时变信道的信道估计问题,将3种自适应信道估计算法: RLS,QRD-RLS,IQRD-RLS,应用于快速时变信道进行比较研究,并对其进行计算机仿真。仿真结果表明,3种算法性能相似,其中,QRD-RLS和IQRD-RLS算法的收敛速度要快于RLS算法,对于实时系统而言,这两种算法的效率更高。因此,QRD-RLS和IQRD-RIS算法更适合于快速时变信道。
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| 关 键 词： | 时变信道 信道估计 RLS QRD-RLS IQRD-RLS |
| 收稿时间： | 2006-10-20 |
| 修稿时间： | 2006-10-20 |
Adaptive Channel Estimation Algorithms for Fast Time Varying Channel |
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| Li Mei,Yang Tiejun. Adaptive Channel Estimation Algorithms for Fast Time Varying Channel[J]. Electronic Science and Technology, 2007, 0(7): 17-19,35 |
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| Authors: | Li Mei Yang Tiejun |
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| Affiliation: | College of Information Science and Engineering, He Nan University of Technology, Zhengzhou 450052, China |
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| Abstract: | This thesis discusses the channel estimation of a time-varying channel for MIMO-OFDM sys- tems.Three adaptive channel estimation algorithms in time varying environment are introduced,namely RLS, QRD-RLS and IQRD-RLS.Performance of the three algorithms is analyzed through computer simulation. The simulation results show that they have similar MSE performance,but QRD-RLS and IQRD-RLS con- verge faster than RLS. |
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| Keywords: | time varying channel channel estimation RLS QRD-RLS IQRD-RLS |
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