小波包变换和加权分数阶傅里叶变换的通信应用对比分析

Contrastive Analysis on Application of Wavelet Packet Transform and Weighted Fractional Fourier Transform in Communication

针对小波包变换和加权分数阶傅里叶变换在通信中表现出的不同性能,在对2种变换进行介绍的基础上,分别对2种变换直接应用于通信以及结合变换域通信技术后的性能进行了仿真对比分析。仿真结果表明,当直接用于通信时,小波包变换的性能要优于加权分数阶傅里叶变换;而当与变换域通信结合以及考虑通信安全性时,加权分数阶傅里叶变换要优于小波包变换,二者在通信中的性能各有优劣,具体取决于应用的方式和目标。

In view of different performance of wavelet packet transform and weighted fractional Fourier transform in communication application,this paper introduces these two transform methods,contrastively analyzes the their performances in communication application and in combination with transform domain communication technology.The simulation results show that the performance of wavelet packet transform is better than that of weighted fractional Fourier transform in communication application,and the former is better than the latter when combining with transform domain communication for communication security.These two transform methods have their own superiorities and drawbacks,which depend on the application modes and objectives.