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Synchronization sensitivity of enhanced CDMA array-receivers to fast channel time-variations and to shaping-pulse design

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3 Author(s)
Cheikhrouhou, K. ; Ecole Nationale d''Ingenieurs de Tunis, Tunisia ; Affes, S. ; Mermelstein, P.

We previously reported on the severe impact synchronization errors may have on the spectrum efficiency of wideband CDMA networks and on the significant performance gains of STAR (spatio-temporal array receiver) over the 2D-RAKE at similar order in complexity. Here we further enhance the 2D-RAKE performance by incorporating a high-resolution early-late gate with a clamping state and further reduce the complexity of STAR. New complexity and performance assessments indicate that STAR, at a comparable computational load, increases its performance advantage over the enhanced 2D-RAKE in the presence of fast channel time-variations even with pulse distortions or at different rolloff factors.

Published in:

Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on  (Volume:1 )

Date of Conference:

4-7 Nov. 2001