| 多用户跳时超宽带系统串行码捕获性能分析 |
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| 引用本文： | 赵为春,刘丹谱,乐光新. 多用户跳时超宽带系统串行码捕获性能分析[J]. 电子与信息学报, 2005, 27(8): 1269-1273 |
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| 作者姓名： | 赵为春 刘丹谱 乐光新 |
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| 作者单位： | 北京邮电大学电信工程学院,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 根据超宽带系统多径延迟的特点,该文给出一种易于实现的超宽带跳时串行捕获方法;并在此基础上,着重分析了该系统在多用户环境下的系统捕获性能;最后通过理论推导和数值仿真分析了用户数量、检测概率、虚警概率、判决门限以及平均捕获时间之间的相互制约关系。从结果中看到,随着用户数的增加,检测概率将降低,而判决门限及虚警概率提高,串行捕获时间也将从微秒级增加到毫秒级。
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| 关 键 词： | 超宽带 跳时 检测概率 虚警概率 判决门限 平均捕获时间 |
| 文章编号： | 1009-5896(2005)08-1269-05 |
| 收稿时间： | 2004-03-25 |
| 修稿时间： | 2004-12-14 |
The Multiuser Acquisition Performance Analysis with TH UWB System |
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| ZHAO Wei-Chun,LIU Dan-pu,Yue Guang-xin. The Multiuser Acquisition Performance Analysis with TH UWB System[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1269-1273 |
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| Authors: | ZHAO Wei-Chun LIU Dan-pu Yue Guang-xin |
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| Affiliation: | College ofTelecomm. Eng.,Beijing Univ. of Posts and Comm., Beijing 100876, China |
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| Abstract: | This paper gives a serial acquisition method which can be easily implemented in time hopping ultra-wide band system. Based on this method, the acquisition performance in the multiuser environment is analyzed, and the relationships between the detection probability, false alarm probability, detection threshold and average acquisition time are given. From the theoretical analysis and numerical simulation, it is noted that with the increasing of user number, the detection probability will decrease. By contrary, the false alarm and the detection threshold will increase accordingly, and the acquisition time will also increase from us to ms. |
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| Keywords: | Ultra-wide band Time hopping Detection probability False alarm Detection threshold Average acquisition time |
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