| 基于MMSE光正交频分复用系统信道估计算法研究 |
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| 引用本文： | 任安虎,赵黎. 基于MMSE光正交频分复用系统信道估计算法研究[J]. 科学技术与工程, 2010, 10(21) |
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| 作者姓名： | 任安虎 赵黎 |
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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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| 摘 要： | 由于自由空间光通信的信道是随机的大气信道,光信号在其中传播必然会受到灰尘、雨滴、雾等粒子散射的影响,为了提高系统抗噪声干扰能力,在原有LS信道估计算法的基础上,设计了基于MMSE算法的光正交频分复用系统信道估计流程,并通过Monte Carlo方法对其进行了仿真验证,结果表明MMSE信道估计算法可以很好地改善系统性能.
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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 |
| 收稿时间： | 2010-04-27 |
| 修稿时间： | 2010-04-27 |
Research on the Channel Estimation Algorithm for OFDM Based on MMSE |
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| renanhu and zhao li. Research on the Channel Estimation Algorithm for OFDM Based on MMSE[J]. Science Technology and Engineering, 2010, 10(21) |
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| Authors: | renanhu and zhao li |
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| Abstract: | The channel of free space optical communication has to experience varied channel effects such as dust, rain, fog etc. In order to enhance the noiseproof feature of the system, the MMSE channel estimation algorithm for FSO-OFDM was designed based on LS channel estimation algorithm. The MMSE algorithm was confirmed by Monte Carlo approach. It is shown that this algorithm can improve the performance of the FSO-OFDM system effectively. |
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| Keywords: | optical communication orthogonal frequency division multiplexing channel estimation minimum mean square error |
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