| 时变WOC信道的二阶盲辨识与估计研究 |
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| 引用本文： | 何子述,韩春林,唐斌.时变WOC信道的二阶盲辨识与估计研究[J].电子学报,2003,31(1):139-141. |
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| 作者姓名： | 何子述 韩春林 唐斌 |
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| 作者单位： | 华中科技大学光电子工程系,湖北武汉 430074 |
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| 摘 要： | 时变及干扰严重是室内光无线通信应用的主要限制.本文引入基于二阶统计量的盲辨识信道估计与去噪策略,对WOC室内信道变化进行自适应跟踪.采用不同的WOC信道作为研究对象,完成了对噪声的估计及信道系数的预测.模拟中对SNR的跟踪范围达30dB,结果证明该方法对信道变化具有适应性.利用该方法对WOC进行改进,可以获得稳定、高效的WOC室内应用系统.
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| 关 键 词： | 室内红外光无线信道 盲辨识与估计 时变特性 |
| 文章编号： | 0372-2112(2003)01-0139-03 |
| 收稿时间： | 2001-04-04 |
An Effective DOA Estimation Algorithm for Multipath Signals |
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| HE Zi shu,HAN Chun lin,TANG Bin.An Effective DOA Estimation Algorithm for Multipath Signals[J].Acta Electronica Sinica,2003,31(1):139-141. |
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| Authors: | HE Zi shu HAN Chun lin TANG Bin |
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| Affiliation: | Department of Optoelectronics,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China |
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| Abstract: | The multipath signal DOA(Direction of Arrival) estimations in mobile communication are discussed in this paper.Some typical algorithms are reviewed in brief first,and the model of multipath signals received by array antennas is described.The algorithm on multipath signal DOA estimation based on time averaging is introduced;also,a problem existing in this method is pointed out;an effective method for solving this problem is raised as well.Finally,the simulation results verifying the theoretical analysis are presented. |
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| Keywords: | DOA estimation multipath array signal processing mobile communication |
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