| TH-PPM-UWB系统在时变信道环境中的性能分析 |
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| 引用本文： | 张博,庄奕琪. TH-PPM-UWB系统在时变信道环境中的性能分析[J]. 电子科技大学学报(自然科学版), 2008, 37(6): 828-831 |
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| 作者姓名： | 张博 庄奕琪 |
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| 作者单位： | 1.西安电子科技大学宽禁带半导体材料与器件教育部重点实验室 西安 710071 |
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| 基金项目： | 国家自然科学基金 ， 部级预研基金 |
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| 摘 要： | 分析了时变信道环境条件下TH-PPM-UWB系统的性能,并通过计算机仿真研究了室内信道环境中,散射体移动对不同参数条件下系统性能的影响。仿真结果表明在系统输入信噪比较小时,散射体的移动对系统性能的影响较小;随着输入信噪比的增加,散射体移动对系统性能的影响明显加剧。总体上,散射体移动对系统性能造成的影响相对与其他干扰来说并不明显,并且在视距及非视距环境中得到的结论基本相同。
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| 关 键 词： | 性能分析 跳时-脉冲位置调制 时变信道 超宽带 |
| 收稿时间： | 2008-03-24 |
Performance Analysis of TH-PPM-UWB System in Time-Varying Channels |
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| ZHANG Bo,ZHUANG Yi-qi. Performance Analysis of TH-PPM-UWB System in Time-Varying Channels[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(6): 828-831 |
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| Authors: | ZHANG Bo ZHUANG Yi-qi |
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| Affiliation: | 1.Key Laboratory of Ministry of Education for Wide Band-Gap Semiconductor Materials and Devices,Xidian University Xi'an 710071 |
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| Abstract: | This paper presents a theoretical analysis of time-hopping pule position modulation ultra-wideband (TH-PPM-UWB) communication system under time-varying channel condition. The effect of scatters movement is analyzed under indoor channel condition with different channel parameters by simulation. Results show that the scatters movement has a slight effect on the performance of system when the input SNR is small and the effect is increasing rapidly when the SNR is increasing. On the whole, the effect of scatters movement is not greater than that of other interferences. This conclusion is similar to those from either under LOS or NLOS condition. |
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