| TH-PPM UWB系统的多址干扰模型改进及误码性能分析 |
| |
| 引用本文： | 吴建军,陈江,蒋伟,项海格. TH-PPM UWB系统的多址干扰模型改进及误码性能分析[J]. 北京大学学报(自然科学版)网络版(预印本), 2006, 0(3) |
| |
| 作者姓名： | 吴建军 陈江 蒋伟 项海格 |
| |
| 作者单位： | 北京大学信息科学技术学院，北京大学信息科学技术学院，北京大学信息科学技术学院，北京大学信息科学技术学院 北京，100871，北京，100871，北京，100871，北京，100871 |
| |
| 基金项目： | 装备技术基础基金(2005JL1025)资助项目 |
| |
| 摘 要： | 跳时-脉冲位置调制方式(TH-PPM:Time-Hopping Pulse Position Modulation)是IR-UWB系统中最常用的多址调制方式之一,针对该多址方式的性能分析一直是UWB技术研究的一个热点。一些文献采用多址干扰特征函数直接数值计算的方法对相干接收方式下异步UWB多用户系统的误码性能进行了分析并获得了精确的数值分析结果,但是相应的分析过程中存在着一定的系统参数设置约束。本文针对现有多用户干扰模型的不足进行了改进和完善,并推导了相应的MAI概率分布和多址干扰误码性能解析表达式。最后通过Monte-Carlo计算机仿真,对改进模型下理论分析结果的有效性进行了验证。
|
| 关 键 词： | 超宽带 跳时-脉冲位置调制 多址干扰 误码性能 |
Enhanced Modeling of Multi-Access Interference and BER Derivation for TH-PPM UWB System |
| |
| WU Jianjun CHEN Jiang JIANG Wei XIANG Haige. Enhanced Modeling of Multi-Access Interference and BER Derivation for TH-PPM UWB System[J]. Beijing University(Natural Science)Network Version(Advance Copy), 2006, 0(3) |
| |
| Authors: | WU Jianjun CHEN Jiang JIANG Wei XIANG Haige |
| |
| Abstract: | The Time-Hopping Pulse Position Modulation (TH-PPM) is one of the most popular approaches for IR-UWB multi-user systems, and a lot of research efforts have been devoted on its performance analysis. In several latest literature, a method of numerical computation of MAI characteristic function had been carried out to derive precision analytical error performance, which, however, still throws a few inconvenient limitation on the system configuration. To overcome this shortage, the corresponding MAI model has been enhanced in this paper, and the multi-access BER performance expression has also been derived based on this modified model. Finally, Monte-Carlo simulations have been carried out to verify the analytical results. |
| |
| Keywords: | Ultra-Wideband Time-Hopping Pulse Position Modulation Multiple-Access Interference Bit Error Rate |
| 本文献已被 CNKI 等数据库收录！ |
