| 移动自组网中信号衰落的影响与应对方法研究 |
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| 引用本文： | 李文翔,江昊.移动自组网中信号衰落的影响与应对方法研究[J].武汉科技大学学报(自然科学版),2007,30(5):542-544. |
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| 作者姓名： | 李文翔 江昊 |
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| 作者单位： | 1. 武汉科技大学信息科学与工程学院,湖北,武汉,430081
2. 武汉大学电子信息学院,湖北,武汉,430072 |
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| 摘 要： | 研究无线信道大尺度路径损耗和小尺度信号衰落的基本原理。对NS-2仿真软件进行开发,设计基于瑞利分布的小尺度信号衰落模型,实现真实电波传播环境的仿真。通过仿真实验分析小尺度信号衰落所产生的瞬时链路对通信性能所产生的影响,并提出相应的改进思路和策略。
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| 关 键 词： | 信号衰落 路径损耗 移动自组网 |
| 文章编号： | 1672-3090（2007）05-0542-03 |
| 修稿时间： | 2007-01-18 |
Impact and resolution of signal fading in MANET |
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| Li Wenxiang,Jiang Hao.Impact and resolution of signal fading in MANET[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2007,30(5):542-544. |
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| Authors: | Li Wenxiang Jiang Hao |
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| Institution: | 1. College of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; 2. School of Electronics and Information, Wuhan University, Wuhan 430072, China |
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| Abstract: | This paper discusses the principles of large-scale path loss and small scale signal fading in MANET and verifies the inaccuracy of performance analysis without considering small-scale fading in current study of MANET. Extension is developed for NS-2 to construct small-scale fading model based on Ricean distribution and Rayleigh distribution for real radio propagation emulation. By means of experiment, the impact of transient links caused by small-scale signal fading on communication performance is analyzed and resolution is proposed. |
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| Keywords: | NS-2 |
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