| 基于SVD的MIMO-OFDMA系统信道估计算法 |
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| 引用本文： | 明磊.基于SVD的MIMO-OFDMA系统信道估计算法[J].舰船电子工程,2008,28(9). |
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| 作者姓名： | 明磊 |
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| 作者单位： | 中国船舶重工集团公司第722研究所,武汉,430079 |
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| 摘 要： | 基于802.16d/e实现的MIMO-OFDMA系统模型的信道估计算法,以LS信道估计方法为基础,结合OFD-MA系统导频的特点,提出一种基于时域LS的SVD信道估计方法,该方法是对T矩阵进行奇异值,而T矩阵要比信道自相关矩阵容易获得的多.仿真和算法分析显示,该算法的性能略劣于Ove Edfors等人提出的基于LMMSE的SVD信道估计方法,但计算复杂度要低,并且对导频的要求比较宽松,具有广泛的应用性.
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| 关 键 词： | 奇异值分解 |
Channel Estimation Based on SVD for MIMO-OFDMA Systems |
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| Ming Lei.Channel Estimation Based on SVD for MIMO-OFDMA Systems[J].Ship Electronic Engineering,2008,28(9). |
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| Authors: | Ming Lei |
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| Institution: | Ming Lei(The 722 Research Institute of CSIC,Wuhan 430079) |
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| Abstract: | Channel estimation algorithms by singular value decomposition(SVD) are investigated for MIMO-OFDMA systems.According to the defined downlink transmission and symbol structure in IEEE Std.802-16d/e,the proposed SVD channel estimation method based on least square(LS) is intended as a improved algorithm for Ove Edfors',which will more easily get singular value based on matrix than that on autocorrelation matrix.Simulations and analysis show performance of the novel method is relatively poor compared to those f... |
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| Keywords: | MIMO-OFDMA LS LMMSE |
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