| 逆向调制无线光通信空间分集分析 |
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| 引用本文： | 王珂,徐智勇,李雪松,汪井源,李建华,赵继勇,韦毅梅,吴传信. 逆向调制无线光通信空间分集分析[J]. 光电工程, 2020, 0(3): 53-58 |
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| 作者姓名： | 王珂 徐智勇 李雪松 汪井源 李建华 赵继勇 韦毅梅 吴传信 |
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| 作者单位： | 陆军工程大学通信工程学院;战略支援部队信息通信工程设计所 |
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| 基金项目： | 江苏省光通信工程技术研究中心基金资助项目(ZXF201901)。 |
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| 摘 要： | 在逆向调制无线光通信系统中,大气湍流对系统的影响大于传统的无线光通信系统。本文研究了一种基于逆向端调制器分集的逆向调制无线光通信系统,以减小大气湍流对系统的影响。利用相位屏法,建立了弱湍流下的激光大气的传输模型,对比分析了逆向调制无线光通信系统逆向端逆向调制器分集和不分集分别所受到的大气湍流的影响。结果显示在相同情况下,逆向调制无线光通信系统在逆向端对逆向调制器进行分集能抑制大气湍流对系统的影响,使整个系统的闪烁指数下降。
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| 关 键 词： | 光通信 逆向调制 大气湍流 分集 闪烁指数 |
Analysis of space diversity method in modulating retro-reflector optical communication |
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| Wang Ke,Xu Zhiyong,Li Xuesong,Wang Jingyuan,Li Jianhua,Zhao Jiyong,Wei Yimei,Wu Chuanxin. Analysis of space diversity method in modulating retro-reflector optical communication[J]. Opto-Electronic Engineering, 2020, 0(3): 53-58 |
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| Authors: | Wang Ke Xu Zhiyong Li Xuesong Wang Jingyuan Li Jianhua Zhao Jiyong Wei Yimei Wu Chuanxin |
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| Affiliation: | (Institute of Communications Engineering,Army Engineering University of PLA,Jiangsu,Nanjing 210007,China;Institute of Information and Communication Engineering,Strategic Support Force,Shenyang,Liaoning 100005,China) |
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| Abstract: | In the modulating retro-reflector(MRR) communication system, the influence of the atmospheric turbulence on the system is more serious than that of the traditional FSO communication system. In this paper, in order to reduce the impact of the atmospheric turbulence, an improved scheme based on the diversity of the retro-reflector is proposed. Using the power spectrum inversion method, the atmospheric propagation model of MRR under weak turbulence is established. The influence of the atmospheric turbulence on the retro-reflector diversity system and the traditional MRR communication system is compared and analyzed. The results of the numerical analysis show that under the same condition, the retro-reflector diversity of modulating retro-reflector(MRR) communication system can reduce the scintillation index caused by the atmospheric turbulence. |
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| Keywords: | optical communication modulating retro-reflector atmospheric turbulence retro-reflector diversity scintillation index |
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