Wavelet-packet-based signatures for asynchronous CDMA systems

Author

Monera-Llorca, J. ; Lu, W.-S. ; Bhargava, J.K.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

fYear

1999

fDate

1999

Firstpage

499

Lastpage

502

Abstract

A wavelet-packet-based family of user signatures for asynchronous CDMA systems is investigated. These signatures are of non-binary nature and are generated by the application of the inverse wavelet packet transform. Through numerical optimization, we obtain the wavelet filter which minimizes the crosscorrelation among signatures for different user configuration systems. The improvement in performance is especially notable in the oversaturated system scenario. Finally, we comment briefly on the topics of bandwidth efficiency, user privacy, and implementation

Keywords

code division multiple access; data privacy; interference suppression; optimisation; wavelet transforms; asynchronous CDMA systems; bandwidth efficiency; crosscorrelation; implementation; inverse wavelet packet transform; numerical optimization; oversaturated system scenario; user configuration systems; user privacy; user signatures; wavelet filter; wavelet-packet-based signatures; Bandwidth; Degradation; Filters; Integrated circuit noise; Interference; Multiaccess communication; Privacy; Wavelet packets; Wavelet transforms; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers and Signal Processing, 1999 IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-5582-2

Type

conf

DOI

10.1109/PACRIM.1999.799585

Filename

799585