| WLAN OFDM系统信道估计技术 |
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| 引用本文： | 王文涛,覃华伟,张业荣.WLAN OFDM系统信道估计技术[J].南京邮电大学学报(自然科学版),2004,24(2):57-60. |
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| 作者姓名： | 王文涛 覃华伟 张业荣 |
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| 作者单位： | 南京邮电学院,通信工程系,江苏,南京,210003 |
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| 摘 要： | 介绍了802.11a系统的信道估计技术,包括LS(最小平方)信道估计技术,维纳滤波器方法,以及它们的基本原理和主要算法。在802.11a系统的仿真平台上用LS和维纳滤波器方法分别对信道进行估计。仿真结果表明,对瑞利衰落信道,在相同的传输速率下,Wiener Filter的信道估计比LS信道估计都有一定的性能提高。
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| 关 键 词： | 信道估计 维纳滤波器 正交频分复用 |
| 文章编号： | 1000-1972(2004)02-0057-04 |
| 修稿时间： | 2003年9月28日 |
Channel Estimation Schemes of WLAN OFDM Systems |
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| WANG Wen-tao,TAN Hua-wei,ZHANG Ye-rong.Channel Estimation Schemes of WLAN OFDM Systems[J].Journal of Nanjing University of Posts and Telecommunications,2004,24(2):57-60. |
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| Authors: | WANG Wen-tao TAN Hua-wei ZHANG Ye-rong |
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| Institution: | WANG Wen-tao,TAN Hua-wei,ZHANG Ye-rong Department of Communication Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China |
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| Abstract: | The paper presents the channel estimation schemes of IEEE 802.11a systems, including LS(Least Square), the Wiener-filter and their basic theories and the major algorithms. The channel estimations are performed by using LS and Wiener-filter method based on the platform of the 802.11a systems. The simulation results show that the performance of the Wiener Filter estimation is better than LS estimation based on Rayleigh fading channel for the same transmission rate. |
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| Keywords: | Channel estimation Wiener-filter Orthognal frequency division multiplexing |
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