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Multipath Channel Parameter Estimation in Mobile Radio Environments Using Stationary Wavelet Transform

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2 Author(s)
O. A. Aboaba ; Department of Electrical and Computer Engineering Curtin University of Technology GPO Box U1987, Perth WA 6845, Australia. email: aboaba@ece.curtin.edu.au ; Kah-Seng Chung

This paper investigates the potential application of the stationary wavelet transform as a low-computational complexity algorithm to jointly estimate the number and delays of impinging waves in mobile radio environments. It makes use of the built-in ability of wavelets at capturing the trends in non-stationary signals at different resolutions. The performance of the proposed scheme is assessed by means of Monte-Carlo simulations in an "eight-path" synthetic mobile radio channel. Initial estimates of the number and delays of the impinging waves were first computed using discrete stationary wavelet transform. In particular, it is shown that the discrete stationary wavelet transform can be successfully used to improve resolution by more than a factor of ten. An amplitude estimation algorithm can then be subsequently applied to determine the amplitudes of the individual paths

Published in:

2005 Asia-Pacific Conference on Communications

Date of Conference:

5-5 Oct. 2005