| 相关衰落信道的随机微分方程模型 |
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| 引用本文： | 扈罗全,施亚申,陆全荣,朱洪波. 相关衰落信道的随机微分方程模型[J]. 苏州大学学报(工科版), 2009, 29(3) |
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| 作者姓名： | 扈罗全 施亚申 陆全荣 朱洪波 |
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| 作者单位： | 1. 苏州出入境检验检疫局,江苏,苏州,215104
2. 南京邮电大学通信与信息工程学院,江苏,南京,210003 |
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| 基金项目： | 国家自然科学基金，江苏出入境检验检疫局科研资助项目 |
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| 摘 要： | 研究使用随机微分方程产生相关衰落信道中接收机的抽头统计量.使用Iangevin方程对发生Doppler频移的随机相位进行建模,在对多径分量的幅度增益进行合理建模以后,从理论上证明表征抽头带通信号的统计特性仍然服从Rayleigh分布.使用仿真方法研究了相关衰落信道统计量的一些统计特性,发现随机相位是具有一定相关关系的高斯变量,所得抽头为独立的Rayleigh变量.
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| 关 键 词： | 无线通信 随机微分方程 随机模型 衰落信道 扩散过程 |
Models of Stochastic Differential Equations for Correlated Fading Channels |
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| Hu Luoquan,Shi Yashen,Lu Quanrong,Zhu Hongbo. Models of Stochastic Differential Equations for Correlated Fading Channels[J]. Journal of Suzhou University(Engineering Science Edition), 2009, 29(3) |
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| Authors: | Hu Luoquan Shi Yashen Lu Quanrong Zhu Hongbo |
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| Affiliation: | 1.Suzhou Entry-Exit Inspection and Quarantine Bureau;Suzhou 215104;China;2.School of Communication and Information Engineering;Nanjing University of Posts and Telecommunications;Nanjing 210003;China |
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| Abstract: | Stochastic differential equations(SDE) are applied to generate correlated random variables as receiver taper of fading channels.It is assumed that the random phases can be modeled through a Langevin equation and the amplitude gains follow a reasonable distribution,which are characterized by SDE.We further prove that the band-passed signals of tap in multipath channel still follow Rayleigh distribution.Simulation results of statistical characteristics of correlated fading channel,such as correlation function... |
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| Keywords: | wireless communications stochastic differential equations stochastic models fading channels diffusion processes |
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