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A noise whitening approach to multiple-access noise rejection .II. Implementation issues

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3 Author(s)
Davis, M. ; COM-Solutions, Encinitas, CA, USA ; Monk, A. ; Milstein, L.B.

Several practical methods are proposed for the implementation of linear filters that reject multiple-access noise in direct sequence code-division multiple-access (DS-CDMA) receivers. These methods rely on taking advantage of variations in the received chip spectrum, and do not require locking and despreading multiple signals. The resulting structures are simple, and some can operate at a high chip rate. Adaptive structures are also proposed. It is shown that a close relationship exists between noise whitening and chip-equalization for a DS-CDMA receiver. System issues affecting the choice of the chip spectrum, and thus the applicability of these methods, are described

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Selected Areas in Communications, IEEE Journal on  (Volume:14 ,  Issue: 8 )