小波在码分多址通信系统中的应用

Application of wavelets to Code Division Multiple Access Communication system

码分多址通信技术是移动通信中的一项重要技术,随着小波分析理论的研究日趋成熟,将小波变换运用到码分多址通信系统中已是一项重要的研究课题。文章总结了这方面已有的部分研究成果,分析、介绍了基于小波包的DS-CDMA及正交小波包分复用(OWPDM)CDMA系统的基本原理,提出了双正交小波包不等速率OWPDM-CDMA系统模型。

Code Division Multiple Access(CDMA) is one of the most important multiplexing techniques in mobile communications. In this paper, new applications of wavelet analysis on CDMA system are reviewed, i.e. wavelet packets based DS CDMA and orthogonal wavelet packets division multiplexing Based CDMA,and their advantages and disadvantages are discussed.Then the biorthogonal wavelet packets multirate OWPDM CDMA system is proposed.The new method is more efficient than the methods discussed above.