Use of wavelet transforms for the delay detection of a new user entering a CDMA communications system

TitleUse of wavelet transforms for the delay detection of a new user entering a CDMA communications system
Publication TypeConference Paper
Year of Publication1997
AuthorsCasal, C. R., A. M. Bravo Santos, and V. K. Bhargava
Conference NamePersonal Wireless Communications, 1997 IEEE International Conference on
Pagination38 -42
Date Publisheddec.
KeywordsCDMA communications system, code division multiple access, correlation, de-noising algorithms, delay detection, delays, estimation theory, expected signal, interference suppression, mobile satellite communication, new user, performance, radio receivers, radiofrequency interference, received signal, receiver structure, transmission delay, wavelet transforms
Abstract

In this paper the problem of estimating the delay of a new user entering the system is studied. A receiver structure is proposed for the estimation of the transmission delay of the new user, and different structures are used to implement the de-noising algorithms. The detector presented solves the problem of detecting the presence of a new user by making the determination of the difference between the received signal and the expected signal, knowing the previous users. This difference is then used to provide the delay of the new user using a structure based on the performance of the correlation between this difference and a reference signal. This structure will be improved with different de-noising possibilities

URLhttp://dx.doi.org/10.1109/ICPWC.1997.655474
DOI10.1109/ICPWC.1997.655474

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