| 基于分形布朗运动的等效带宽及其参数计算算法 |
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| 引用本文： | 徐名海,彭玉旭.基于分形布朗运动的等效带宽及其参数计算算法[J].南京邮电大学学报(自然科学版),2009,29(1). |
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| 作者姓名： | 徐名海 彭玉旭 |
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| 作者单位： | 1. 南京邮电大学,通信与信息工程学院,江苏,南京,210003
2. 长沙理工大学,计算机与通信工程学院,湖南,长沙,410076 |
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| 摘 要： | 在推导一种新型的基于分形布朗运动(fractional brownian motion,FBM)的等效带宽计算模型的基础上,提出了基于小波分析的Hum参数计算模型.首先给出了ON/OFF数据源的数学定义,然后在此基础上推导了基于FBM的等效带宽计算模型.时模型的敏感性分析表明,Hurst参数是该模型的重要参数,文中提出了一种改进的基于小波分析的Hurst参数检测算法.仿真证明,所提的等效带宽模型正确有效,Hurst参数检测算法精度显著提高.
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| 关 键 词： | 分形布朗运动 等效带宽 Hurst参数 小波分析 |
Fractional Brownian Motion Based Equivalent Capacity and Parameter Evaluation Algorithm |
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| XU Ming-hai,PENG Yu-xu.Fractional Brownian Motion Based Equivalent Capacity and Parameter Evaluation Algorithm[J].Journal of Nanjing University of Posts and Telecommunications,2009,29(1). |
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| Authors: | XU Ming-hai PENG Yu-xu |
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| Institution: | 1.College of Telecommunications & Information Engineering;Nanjing University of Posts and Telecommunications;Nanjing 210003;China2.College of Computer and Telecommunications Engineering;Changsha University of Science and Technology;Changsha 410076;China |
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| Abstract: | A novel Fractional Brownian Motion(FBM) based equivalent capacity evaluation and relative parameter computing algorithms are brought forward.Firstly,the mathematic definitions of the ON/OFF source are given.Then FBM based equivalent capacity evaluation formula is deduced.Because of the great importance of the Hurst parameter,an enhanced wavelet-based estimator of the Hurst parameter is proposed.The simulation shows that the algorithms proposed in this paper are superior to those currently used. |
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| Keywords: | FBM equivalent capacity hurst parameter wavelet-based estimator |
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