| 室内可见光通信中噪声与干扰的实验与仿真分析 |
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| 引用本文： | 汪井源,徐智勇,朱勇,经继松,王荣,文湘益.室内可见光通信中噪声与干扰的实验与仿真分析[J].光电子．激光,2012(7):1314-1318. |
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| 作者姓名： | 汪井源 徐智勇 朱勇 经继松 王荣 文湘益 |
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| 作者单位： | 解放军理工大学通信工程学院;解放军理工大学通信工程学院;解放军理工大学通信工程学院;解放军理工大学通信工程学院;解放军理工大学通信工程学院;解放军理工大学通信工程学院 |
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| 基金项目： | 江苏省自然科学基金(BK2011114);江苏省科技支撑计划(BE2011177)资助项目 |
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| 摘 要： | 对室内可见光通信中的背景光噪声与干扰进行了实验测试,获得了噪声干扰的典型时域特性;进而模拟分析了背景光噪声与干扰对不同速率信号传输的影响。结果显示,背景光噪声及干扰对室内可见光通信的影响主要表现为直流电平和低频周期性信号,并且低速率数据信号更容易被干扰。通过比较分析几种无线光通信中常用调制方式的功率谱密度,结果表明,由于脉冲位置调制和曼彻斯特编码的低频分量较少,更适合室内可见光通信。
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| 关 键 词： | 可见光通信 干扰 功率谱密度 |
Experiment and simulation analysis of noise and interference in indoor visible light communications |
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| WANG Jing-yuan,XU Zhi-yong,Zhu Yong,JING Ji-song,Wang Rong and WEN Xiang-yi.Experiment and simulation analysis of noise and interference in indoor visible light communications[J].Journal of Optoelectronics·laser,2012(7):1314-1318. |
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| Authors: | WANG Jing-yuan XU Zhi-yong Zhu Yong JING Ji-song Wang Rong and WEN Xiang-yi |
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| Affiliation: | Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China;Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China;Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China;Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China;Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China;Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China |
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| Abstract: | In this paper,the experiment and simulation analysis in time and frequency domains of the noise and interference in indoor visible light communication are accomplished.The influence of background noise and interference on the signal transmission of different rates is analyzed in simulations.It can be seen that the noise and interference can be taken as certain current and periodical interference signal,and the signal with low transmission rate can be interferred more easily.We compare the effects of the low pass filter which is used to filter the periodical interference signal at different data rates.Also,the power spectrum densities of some modulation schemes are demonstrated.The results show that the pulse position modulation and the Manchester code are more suitable for indoor visible light communication than other modulations,because of their less low-frequency components. |
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| Keywords: | visible light communication interference power spectrum density |
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