| 一种空潜蓝绿激光通信双盲均衡方法 |
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| 引用本文： | 毛忠阳,徐雪颖,陆发平,沙丹丹.一种空潜蓝绿激光通信双盲均衡方法[J].海军航空工程学院学报,2023(5):375-381. |
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| 作者姓名： | 毛忠阳 徐雪颖 陆发平 沙丹丹 |
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| 作者单位： | 海军航空大学,山东烟台 264001 |
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| 摘 要： | 空潜蓝绿激光通信系统容易受到信道多径效应的影响,从而发生码间干扰,严重影响系统性能。通过对空潜蓝绿光通信系统信道进行剖析,基于蓝绿激光衰减特性和时域展宽特性,将可变步长恒模分数间隔均衡算法和判决导向最小均方算法相结合,提出了 1种适合空潜蓝绿激光通信的双模盲均衡方法。所提方法相较于 CMA盲均衡、CMA+DD-LMS均衡以及 CLMS均衡等常规均衡方法,能够获得更小的均方误差和更快的收敛速度,具有更好的均衡性和抗噪声性能,可有效提高系统性能。当系统误码率为 10-4时,性能最高可提升约 1.8dB。
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| 关 键 词： | 蓝绿激光 空潜通信 盲均衡算法 码间干扰 |
ADouble-Blind Equalization Methodfor Air-Submarine Blue-GreenLaser Communication |
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| MAOZhongyang,XUXueying,LUFaping,SHADandan.ADouble-Blind Equalization Methodfor Air-Submarine Blue-GreenLaser Communication[J].Journal of Naval Aeronautical Engineering Institute,2023(5):375-381. |
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| Authors: | MAOZhongyang XUXueying LUFaping SHADandan |
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| Institution: | NavalAviationUniversity,Yantai Shandong264001,China |
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| Abstract: | Theair-submarineblue-greenlasercommunicationsystemisprone tochannelmultipatheffect,causinginter-symbol interference, and the system performance is seriously affected. By analyzing the channel of air-submarine blue-green lasercommunication systems, based on the attenuation characteristicsand time-domain broadening characteristics ofblue-greenlaser,avariable-stepconstantmodulusfractionalintervalequalizationalgorithmandadecision-guidedleast meansquarealgorithm arecombinedtopropose adualmode blindequalizationmethodsuitablefor air-submarine blue-greenlasercommunication.ComparedtoconventionalequalizationmethodssuchasCMAblindequalization,CMA+DD-LMSequalizationandCLMSequalization,theproposedmethodcanachievesmallermeansquareerrorandfasterconver-gencespeed,andhasbetterequalizationandanti-noiseperformance,effectivelyimprovingsystemperformance,withthe maximumperformanceimprovementofabout1.8d Bwhenthesystembiterrorrateis10-4 . |
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| Keywords: | blue-greenlaser air-submarinecommunication blindequalizationalgorithm intersymbolinterference |
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