| 传输参考超宽带信号功率谱密度分析 |
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| 引用本文： | 杨凯,安建平,卜祥元.传输参考超宽带信号功率谱密度分析[J].北京理工大学学报,2007,27(5):441-445. |
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| 作者姓名： | 杨凯 安建平 卜祥元 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 介绍了传输参考超宽带(TR-UWB)系统,给出了传统单用户TR-UWB信号的功率谱密度(PSD);针对多用户情况下的TR-UWB信号,结合数学模型,给出了TR TH-PPM和TR TH-PAM信号功率谱密度的数学表达式.理论分析表明,TR-UWB信号的功率谱由连续谱和离散谱两部分组成,参考脉冲不影响连续谱,而只影响离散谱.减少参考脉冲可以降低离散谱幅度,但同时也降低了系统性能.仿真结果对理论推导进行了验证.
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| 关 键 词： | 超宽带 传输参考 功率谱密度 |
| 文章编号： | 1001-0645(2007)05-0441-05 |
| 收稿时间： | 2006/11/30 0:00:00 |
| 修稿时间： | 11 30 2006 12:00AM |
Power Spectral Density Analysis of Transmitted Reference Ultra-Wide Band Signals |
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| YANG Kai,AN Jian-ping and BU Xiang-yuan.Power Spectral Density Analysis of Transmitted Reference Ultra-Wide Band Signals[J].Journal of Beijing Institute of Technology(Natural Science Edition),2007,27(5):441-445. |
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| Authors: | YANG Kai AN Jian-ping and BU Xiang-yuan |
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| Institution: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Transmitted reference ultra-wide band(TR-UWB) system is introduced,and the power spectral density(PSD) of conventional single user TR-UWB signals presented.For the multi-user circumstance,mathematical models of PSD of TR TH-PPM and TR TH-PAM signals are given.The PSD of TR-UWB signal contains a continuous part and a discrete part.The continuous part is independent from the reference pulses,while the discrete part is influenced by reference pulses.Reducing the amplitude of the discrete part can be achieved by decreasing the number of reference pulses,which depresses the performance of TR-UWB system.Theoretical deduction is verified by results of simulation. |
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| Keywords: | ultra-wide band(UWB) transmitted reference(TR) power spectral density(PSD) |
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