| FSO—OFDM系统的SVD—MMSE信道估计算法 |
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| 引用本文： | 赵黎,李豪杰. FSO—OFDM系统的SVD—MMSE信道估计算法[J]. 西安工业大学学报, 2011, 0(5): 474-477 |
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| 作者姓名： | 赵黎 李豪杰 |
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| 作者单位： | 西安工业大学电子信息工程学院,西安710032 |
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| 基金项目： | 基金资助：陕西省教育厅专项科研计划项目（20LOJK587） |
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| 摘 要： | 针对基于MMSE的FSO—OFDM系统信道估计算法计算量复杂、对信道矩阵具有奇异性要求等弊端，设计了基于SVD-MMSE算法的FSO—OFDM系统信道估计流程，并通过MonteCarlo方法对SVD—MMSE算法进行了仿真验证，将MMSE算法与SVD—MMSE算法进行了对比分析，结果表明SVD-MMSE算法相对于MMSE算法既能降低系统计算复杂度又能保证系统可靠性，即在系统复杂度与性能之间可以得到很好的折衷．
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| 关 键 词： | 光通信 正交频分复用 信道估计 最小均方误差 奇异值分解 |
SVD-MMSE Channel Estimation Algorithm for FSO-OFDM System |
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| ZHAO Li,LI Hao-jie. SVD-MMSE Channel Estimation Algorithm for FSO-OFDM System[J]. Journal of Xi'an Institute of Technology, 2011, 0(5): 474-477 |
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| Authors: | ZHAO Li LI Hao-jie |
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| Affiliation: | (School of Electronic Information Engineering, Xi＇ an Technological University, Xi＇ an 710032, China) |
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| Abstract: | For the MMSE-based channel estimation algorithm for FSO-OFDM system has the disadvantages of requiring a lot of complex calculations and requiring the channel matrix with singular, the SVD-MMSE channel estimation algorithm for FSO-OFDM was designed. The SVD-MMSE algorithm was confirmed by Monte Carlo approach, meanwhile the SVD- MMSE algorithm and the MMSE algorithm were compared. It is shown that, compared with the MMSE algorithm, the SVD-MMSE algorithm not only can reduce the computational complexity of the FSO-OFDM system, but also can guarantee the FSO-OFDM system reliability effectively. |
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| Keywords: | optical communication orthogonal frequency division multiplexing channel estimation minimum mean square error singular value decomposition |
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