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一种改进的MIMO OFDM系统信道估计算法
引用本文:胡蝶,杨绿溪. 一种改进的MIMO OFDM系统信道估计算法[J]. 电路与系统学报, 2006, 11(4): 1-4
作者姓名:胡蝶  杨绿溪
作者单位:东南大学,无线电工程系,信息与信号处理实验室,江苏,南京,210096
基金项目:国家自然科学基金(60272046);江苏省自然科学基金(BK2002051);国家863计划重大项目(2002AA123031,2001AA123015)
摘    要:本文对MIMO OFDM系统中基于训练序列的信道估计问题进行了研究,针对信道冲击响应的最大抽头数大于每个OFDM符号中导频数的情况,提出一种有效的结合前后若干训练序列进行信道估计的算法和结合方式。仿真结果表明,在基于无线局域网(WLAN)中打包传送的MIMO OFDM系统里,本文的方法比采用块状训练序列的估计算法有着更小的归一化均方误差。

关 键 词:MIMO OFDM 梳状训练序列 块状训练序列 信道估计
文章编号:1007-0249(2006)04-0001-04
收稿时间:2004-03-15
修稿时间:2004-08-30

An efficient channel estimation for MIMO OFDM systems
HU Die,Yang Lu-xi. An efficient channel estimation for MIMO OFDM systems[J]. Journal of Circuits and Systems, 2006, 11(4): 1-4
Authors:HU Die  Yang Lu-xi
Abstract:The channel estimation methods for MIMO OFDM systems based on training sequences are investigated. To solve the problem that the maximum channel path is larger than the number of pilot tones in one OFDM symbol, an efficient comb type training structures and the corresponding channel estimation technique are proposed. The simulation results show that the proposed method has smaller normalized MSE than the method based on block type training sequences for packet-based MIMO OFDM systems in wireless local area networks.
Keywords:MIMO OFDM   comb type training sequence   block type training sequence    channel estimation
本文献已被 CNKI 维普 万方数据 等数据库收录!
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