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Blind adaptive receiver for coded multicarrier DS-CDMA systems in multipath fading channels

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2 Author(s)
Cances, J.-P. ; Ecole Nationale Superieure d''Ingenieurs de Limoges, France ; Meghdadi, V.

The authors present a multicarrier asynchronous direct sequence code division multiple access (DS-CDMA) system which uses an adaptive blind algorithm for the optimum combining of the desired signal contributions from different carriers. The output of the transmitter convolutional encoder modulates multiple band-limited DS-CDMA waveforms which are parallel transmitted with different carrier frequencies. The performance of this system is compared to that of a conventional single-carrier DS-CDMA system with a RAKE receiver and a RAKE receiver with a sliding window decorrelator filter. In this latter case, the RAKE receiver uses pilot symbols to track the channel impulse response time variations. The results demonstrate a performance similar to that of a decorrelating detector in the context of a severe near-far situation while exhibiting lower complexity

Published in:

Communications, IEE Proceedings-  (Volume:149 ,  Issue: 3 )