| 基于IEEE 802.16a MIMO-OFDM系统的信道估计方法研究 |
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| 引用本文： | 董艳男,酆广增,朱琦.基于IEEE 802.16a MIMO-OFDM系统的信道估计方法研究[J].南京邮电大学学报(自然科学版),2005,25(2):62-66. |
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| 作者姓名： | 董艳男 酆广增 朱琦 |
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| 作者单位： | 南京邮电学院,通信工程系,江苏,南京,210003;南京邮电学院,通信工程系,江苏,南京,210003;南京邮电学院,通信工程系,江苏,南京,210003 |
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| 基金项目： | 国家高科技“八六三”计划(2002AA123046)资助项目 |
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| 摘 要： | 多天线运用到802.16a系统中可以提高系统的性能。首先给出MIMO-OFDM(Multi-inputandMulti-output-OrthogonalFrequencyDivisionMultiplexing)系统的基本构成,然后对协议中的空时编码方案进行改进,提出将协议中所提出的单接收机两天线发送分集的情况扩展到多发多收的情况,最后介绍了适合MIMO-OFDM系统LS信道估计的帧头结构和导频结构,在一个OFDM符号时间内即可估计出MIMO各个子信道参数;对SUI-3信道下的误比特率(BER)及均方误差(MSE)性能分别进行了仿真,比较分析了结果,并得出结论。
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| 关 键 词： | IEEE 802.16a OFDM MIMO 信道估计 |
| 文章编号： | 1000-1972(2005)02-0062-05 |
| 修稿时间： | 2004年6月21日 |
The Research of Channel Estimation Method for MIMO-OFDMSystem Based on IEEE 802.16a |
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| DONG Yan-nan,FENG Guang-zeng,ZHU Qi.The Research of Channel Estimation Method for MIMO-OFDMSystem Based on IEEE 802.16a[J].Journal of Nanjing University of Posts and Telecommunications,2005,25(2):62-66. |
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| Authors: | DONG Yan-nan FENG Guang-zeng ZHU Qi |
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| Institution: | DONG Yan-nan,FENG Guang-zeng,ZHU QiDepartment of Communication Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China |
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| Abstract: | Multi-input and Multi-output antenna applied in 802.16a system can improve the system's performance. In this paper, we present the structure of the MIMO-OFDM(Multi-input and Multi-output-Orthogonal Frequency Division Multiplexing) system first. Then,we improve the Space-Time coding scheme of the protocol to advance the system performance. In the new scheme multi-output and multi-input scene is proposed instead of two-output and one-input scene proposed in 802.16a. Finally, we introduce the structure of the preamble and pilot in LS channel estimation method for MIMO-OFDM system, by which the channel parameter can be obtained in an OFDM symbol duration. The simulation results are presented under a SUI-3 channel model. |
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| Keywords: | IEEE 802 16a Orthogonal frequency division multiplexing Multi-input and multi-output Channel estimation |
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