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| MIMO OFDM系统时域信道估计新方法 | |
| 引用本文： | 王翔宇,黄焱. MIMO OFDM系统时域信道估计新方法[J]. 信息工程大学学报, 2013, 14(3): 359-363 |
| 作者姓名： | 王翔宇 黄焱 |
| 作者单位： | 信息工程大学 |
| 摘 要： | 提出一种多输入多输出-正交频分复用（MIMO—OFDM）系统的时域信道估计新方法。设计了一种具有最佳自相关性的实训练序列，并利用训练序列的自相关性获得信道的时域冲激响应。同时针对时域信道具有一定的稀疏性，通过信道有效路径估计，减少噪声对信道估计结果的影响，提高算法估计性能。理论分析和实验仿真结果表明，文章方法在更低的计算复杂度和更高的系统传输效率下，具有更高的估计性能。 |
| 关 键 词： | 多输入多输出-正交频分复用 时域信道估计 自相关性 信道有效路径估计 |
Novel Time-Domain Channel Estimation Method for MIMO-OFDM Systems |
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| WANG Xiang-yu,HUANG Yan. Novel Time-Domain Channel Estimation Method for MIMO-OFDM Systems[J]. , 2013, 14(3): 359-363 | |
| Authors: | WANG Xiang-yu HUANG Yan |
| Affiliation: | ( Information Engineering University, Zhengzhou 450001, China) |
| Abstract: | A novel time-domain channel estimation method for Multi-Input Multi-Output Orthogonal Frequency Division Multiplexing（MIMO-OFDM） is proposed. A real training sequence with perfect auto-correlation is designed, then the channel impulse response in time domain is obtained on ac- count of the auto-correlation property of the training sequences. As the certain character of sparse- ness of the time-domain channel, the estimation of channel valid paths can reduce the impact of the noise and further improve the estimation performance. The results of both theoretical analysis and ex- periments show that the proposed method has more excellent estimation performance with lower com- putation complexity and higher system transfer efficiency. |
| Keywords: | multi-input multi-output orthogonal frequency division multiplexing time-domain chan- nel estimation auto-correlation estimation of channel valid paths |
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