基于PR-QMF的扩频序列  

PR-QMF Based Spreading Codes

作　　者：何昕[1] 曾兴雯[1] 

机构地区：[1]西安电子科技大学综合业务网与关键技术国家重点实验室,陕西西安710071

出　　处：《电子科技》2007年第4期32-34,共3页Electronic Science and Technology

基　　金：国防科技重点实验室项目(No.51434050103DZ0101)

摘　　要：利用小波或者小波包的变换与反变换可以构造出具有完全重构性质的滤波器组,提出一种基于完全重构正交镜像滤波器组的新型扩频序列,它不同于传统的扩频序列的二值特性,是一种多值序列。分析与仿真结果表明,小波函数与尺度函数的正交性以及滤波器组的完全重构特性使的这种新型扩频序列具有更好的抗干扰能力和组网能力。Structure filter banks that reconstruct signals perfectly can be obtained by using wavelet transformation and inverse transformation. A new kind of cedes based on the perfect reconstruction QMF （ PR - QMF） for spreading spectrum communication system is presented, which is a type of multi - value codes rather than the traditional binary valued ones. Theoretical analysis and simulation results indicate that due to the orthogonal relation between wavelet function and scale function and the property of perfect reconstruction, the spreading cedes have perfect anti -jamming ability.

关 键 词：完全重构正交镜像滤波器组 直接序列扩频 扩频序列 

分 类 号：TN914.42[电子电信—通信与信息系统]