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An approach to data detection and fading amplitude estimation in asynchronous CDMA-systems on Rayleigh-flat-fading channels

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4 Author(s)
Jetzek, U. ; Inst. of Network & Signal Theory, Darmstadt Univ. of Technol., Germany ; Bruck, S. ; Trager, J. ; Hovakimian, K.

For an asynchronous direct-sequence CDMA system two different multistage multiuser detection schemes are discussed. Taking into consideration transmission over a frequency-nonselective slowly fading channel one has to cope with the problem of joint data detection and channel estimation. Simulation results assuming a perfect knowledge of the channel coefficients are discussed to compare the two multistage detection schemes. The numerical results give reason to the fact that both iterative detection schemes are near-far resistant and that they perform at a low bit error rate having a reasonable computational complexity. The paper concludes giving some different approaches for the joint detection and estimation problem

Published in:

Vehicular Technology Conference, 1997, IEEE 47th  (Volume:3 )

Date of Conference:

4-7 May 1997