Wavelet-packet-based signatures for asynchronous CDMA systems

TitleWavelet-packet-based signatures for asynchronous CDMA systems
Publication TypeConference Paper
Year of Publication1999
AuthorsMonera-Llorca, J., W. - S. Lu, and V. K. Bhargava
Conference NameCommunications, Computers and Signal Processing, 1999 IEEE Pacific Rim Conference on
Pagination499 -502
Keywordsasynchronous CDMA systems, bandwidth efficiency, code division multiple access, crosscorrelation, data privacy, implementation, interference suppression, inverse wavelet packet transform, numerical optimization, optimisation, oversaturated system scenario, user configuration systems, user privacy, user signatures, wavelet filter, wavelet transforms, wavelet-packet-based signatures

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


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