| 空时分组编码MIMO-OFDM系统的两步信道估计方法 |
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| 引用本文： | 张宇,张乃通.空时分组编码MIMO-OFDM系统的两步信道估计方法[J].吉林大学学报(工学版),2009(Z1). |
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| 作者姓名： | 张宇 张乃通 |
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| 作者单位： | 哈尔滨工业大学电子与信息技术研究院; |
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| 基金项目： | 国家重点基础研究发展计划项目(2007CB310606);;国家自然科学基金项目(60432040) |
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| 摘 要： | 为了提高基于空时分组编码MIMO-OFDM系统信道估计算法的性能,提出了一种适用于空时分组编码MIMO-OFDM系统的两步信道估计方法。首先,运用最小均方误差估计算法对导频信道进行初始信道参数估计;然后,通过已得到的初始信道参数,运用本文提出的估计算法来获得更精确的后续信道参数,从而进一步提高信道估计的精度。仿真结果表明:与MMSE估计算法和ML估计算法相比,本文提出的算法具有较低的复杂度,且有效地减小了信道估计的误差。
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| 关 键 词： | 通信技术 多输入多输出-正交频分复用系统 信道估计 空时分组码 |
Two-step channel estimation method for STBC-MIMO-OFDM system |
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| ZHANG Yu,ZHANG Nai-tong.Two-step channel estimation method for STBC-MIMO-OFDM system[J].Journal of Jilin University:Eng and Technol Ed,2009(Z1). |
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| Authors: | ZHANG Yu ZHANG Nai-tong |
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| Affiliation: | School of Electronics and Information Technology;Harbin Institute of Technology;Harbin 150001;China |
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| Abstract: | In order to improve the performance of space-time block coded MIMO-OFDM channel estimation,a two-step channel estimation method was proposed.The minimum mean square error(MMSE) channel estimation algorithm was used to estimate initial channel parameter values in the first step and these values were used to obtain more accurate values by the proposed method in the second step,so the performance of channel estimation was improved.Simulation results show that the performance of the two-step channel estimation ... |
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| Keywords: | communication MIMO-OFDM channel estimation space-time block code |
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