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Time-delay and frequency-shift estimation of multi-user asynchronous CDMA signals in a multipath channel

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2 Author(s)
Eric, M. ; Inst. of Electr. Eng., Belgrade, Yugoslavia ; Obradovic, M.

A subspace-based MUSIC type algorithm for joint time-delay and frequency-shift estimation of asynchronous CDMA signals in a multipath channel is proposed. The algorithm provides identification and joint time-delay and frequency-shift estimation of all paths of the given CDMA user if paths are not perfectly coherent (correlated). The algorithm requires no preamble, can be applied for both single-user and multi-user estimation and it is robust to multi-user interference. The results provided by simulation prove that the proposed algorithm is well suited to fading channel analysis

Published in:

Electrotechnical Conference, 1998. MELECON 98., 9th Mediterranean  (Volume:2 )

Date of Conference:

18-20 May 1998