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A Decoupled WLS Approach to DS-CDMA Multiuser Detection

Anders Ranheim (Institutionen för tillämpad elektronik, Signalbehandling) ; Per Pelin (Institutionen för tillämpad elektronik, Signalbehandling)
Proc. 31st Asilomar Conference, Pacific Grove, CA, USA, NOV 02-05, Vol. 1 (1997), p. 525 - 529.
[Konferensbidrag, refereegranskat]

A new algorithm for multiuser detection in a DS-CDMA system is presented Based on an algorithm originally developed in the array-processing context, it minimizes a weighted least-squares criterion, and detects one signal at a time. A performance analysis in terms of bit-error rate is carried out, and demonstrates that the proposed method is asymptotically identical to the LMMSE-estimator but without assuming or requiring any knowledge of the signal amplitudes. Only the desired user's signature sequence and timing is required. Both a batch and a recursive formulation of the algorithm is described, and simulation results are included in addition to the analysis, to highlight the comparison to other methods.



Denna post skapades 2006-09-12. Senast ändrad 2013-06-12.
CPL Pubid: 15860

 

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Institutioner (Chalmers)

Institutionen för tillämpad elektronik, Signalbehandling (1980-1997)

Ämnesområden

Information Technology

Chalmers infrastruktur