| 超宽带脉冲信号波形失真仿真与分析 |
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| 引用本文： | 扈罗全,朱洪波.超宽带脉冲信号波形失真仿真与分析[J].中国电子科学研究院学报,2006,1(3):234-239. |
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| 作者姓名： | 扈罗全 朱洪波 |
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| 作者单位： | 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;中国科学院资助项目;新世纪优秀人才支持计划;高等学校博士学科点专项科研项目 |
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| 摘 要： | 超宽带无线信道的频率依赖特性直接影响到超宽带接收机的设计和以脉冲波形为基础的多址技术。本文针对频率依赖特性对超宽带脉冲信号波形产生的影响,分别从相位谱和幅度谱两个方面分析超宽带脉冲信号的相位失真和幅频失真特性,建立了描述脉冲波形失真特性的数学模型。使用该模型对高斯二阶导数脉冲信号的波形失真进行仿真分析,得到了只发生相位响应失真、只发生幅度响应失真、以及同时发生相位—幅度响应失真的脉冲波形。
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| 关 键 词： | 无线通信 超宽带 频率依赖关系 脉冲波形 |
| 文章编号： | 1673-5692（2006）03-234-06 |
| 收稿时间： | 2005-11-22 |
| 修稿时间： | 2006-05-20 |
Simulation and Analysis of Waveform Distortion of Ultra-Wideband Pulse Signals |
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| HU Luo-quan,ZHU Hong-bo.Simulation and Analysis of Waveform Distortion of Ultra-Wideband Pulse Signals[J].Journal of China Academy of Electronics and Information Technology,2006,1(3):234-239. |
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| Authors: | HU Luo-quan ZHU Hong-bo |
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| Affiliation: | College of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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| Abstract: | Frequency dependence of Ultra-wideband(UWB) wireless channels has direct effects on the design of receivers and the multiple address technique based on the pulse waveform.These effects on waveforms of UWB pulse signals are investigated in the current research.The distortion of the phase and amplitude of UWB pulse signals are analyzed from aspects of the phase and amplitude spectrum,respectively.Mathematical models for the distortion properties of pulse waveforms are constructed.The simulation of second derivative of Gaussian pulse as UWB signal waveform is conducted.The distorted waveforms are obtained from only experienced phase response distortion,only experienced amplitude response distortion,and experienced both phase and amplitude response distortion,respectively. |
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| Keywords: | wireless communications ultra-wideband frequency dependence pulse waveforms |
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