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Subchip multipath delay estimation for downlink WCDMA system based on Teager-Kaiser operator

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3 Author(s)
Hamila, R. ; Inst. of Commun. Eng., Tampere Univ. of Technol., Finland ; Lohan, E.S. ; Renfors, M.

Accurate detection and estimation of overlapping fading multipath components is vital for many communication systems, particularly for positioning technologies. Traditional approaches used for channel estimation generally fail in estimating closely-spaced multipath components in code-division multiple access (CDMA) systems. Here, we present a highly efficient technique for asynchronous downlink WCDMA multipath delay estimation with subchip resolution capability based on nonlinear Teager-Kaiser operator concept. The behavior of this technique is influenced considerably by the pulse shape waveform. Both rectangular and root raised cosine pulse shaping filters are considered.

Published in:

Communications Letters, IEEE  (Volume:7 ,  Issue: 1 )

Date of Publication:

Jan. 2003

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