多址干扰抑制混沌超宽带脉冲设计  

CHAOTIC UWB PULSE DESIGN FOR MULTI-SITE INTERFERENCE SUPPRESSION

作　　者：马英杰[1] 魏占祯[1] 杨建喜[1] 

机构地区：[1]北京电子科技学院通信工程系,北京100070

出　　处：《计算机应用与软件》2013年第5期257-259,共3页Computer Applications and Software

基　　金：北京电子科技学院基本科研业务费资助项目(BESTI-JBKY-201106)

摘　　要：针对超宽带多址干扰问题,采用高斯7阶导脉冲作为UWB原始脉冲,使用厄米特矩阵特征向量分解算法设计UWB正交脉冲序列,采用Logistic混沌序列作为跳时码进行混沌跳时-脉位调制,生成混沌超宽带脉冲,从而达到抑制多址干扰的目的。最后,分析CTH-PPM UWB系统的抗多址干扰性能。仿真结果表明CTH-PPM UWB系统抗多址干扰性能明显优于TH-PPM UWB系统,具有更强的抗多址干扰能力。Aiming at multiple site interference（MSI） problem in ultra-wideband（UWB） system,Gaussian 7th order derivative pulse is adopted as UWB preliminary pulse,Hermite matrix eigenvectors decomposing algorithm is employed to design UWB orthogonal pulses sequence,and Logistic chaotic sequence is used as the time-hopping code to execute chaotic time-hopping pulse position modulation（CTH-PPM）,the chaotic UWB pulse is produced,and therefore the purpose of MSI suppression is achieved.At last,the performance of multi-site interference resistance of CTH-PPM UWB system is analysed,simulation result proves that the this performance of CTH-PPM UWB system clearly outperforms that of TH-PPM UWB system,it has stronger capability in multi-site interference resistance.

关 键 词：超宽带 多址干扰抑制 高斯7阶导脉冲 厄米特矩阵 LOGISTIC混沌序列 混沌跳时-脉位调制 

分 类 号：TN914.3[电子电信—通信与信息系统]