一种UWB脉冲的传播特性和抗MUI性能分析  

Transmitting Characteristics and the Anti-MUI Performance Analysis of the THMA-UWB System

作　　者：蔡成林[1] 李孝辉[2] 吴海涛[2] 卢晓春[2] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]中国科学院国家授时中心,陕西临潼710600

出　　处：《中北大学学报（自然科学版）》2011年第5期648-654,共7页Journal of North University of China(Natural Science Edition)

基　　金：国家"863"基金资助项目(2006AA12Z314);中科院"西部之光"重点项目(2005ZD02);湖南省自然科学基金资助项目(07JJ6105)

摘　　要：给出了高斯微分脉冲优化组合的最佳逼近结果及对应的UWB脉冲波形,分析了由该组合波形产生的TH-UWB信号在视距多径信道的传播性能以及在THMA-UWB体制中的误比特率性能.重点研究了基于标准高斯近似假设的多用户干扰情况,明确了误码率、σM2项和高斯微分阶次及组合三者之间的内在联系,并得出了一些有用的结论.这些分析和结论将为高斯微分脉冲的组合设计提供关键性依据,同时也有力地说明了所设计的UWB脉冲不仅具有最佳逼近能力,而且具有最佳BER性能,可供中小型超宽带无线通信系统应用时参考.The best approximations of optimum combinations of ultra wideband waveform with differential Gaussian pulses were given.The satisfactory transmitting distance in the line of sight（LOS） multi-path channel and the minimum bit error rate（BER） in the Time-Hopping Multiple Access systems were analyzed.Multi user interference（MUI） with the hypothesis of Standard Gaussian Approximation,the inherent relations among bit error rate and σ2M and coefficient of differential Gaussian pulse were investigated and some useful conclusions were drawn.These analyses and conclusions provide important based on the waveform design with differential Gaussian pulses.It show that the proposed Ultra Wide Band signals not only reach the best approach but also have the best BER performance.Therefore,it can be extended as a perfect transmitting pulse in the wireless communication system for Ultra Wide Band.

关 键 词：优化组合 跳时多址 超宽带 多用户干扰 误比特率 高斯微分脉冲 

分 类 号：TN925[电子电信—通信与信息系统]