A WIDEBAND BSOR-GSIC MULTIUSER DETECTOR FOR LONG-CODE CDMA SYSTEMS

A WIDEBAND BSOR-GSIC MULTIUSER DETECTOR FOR LONG-CODE CDMA SYSTEMS. IEEE International Conference on Signal Processing and Communication.

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Abstract

In this work, a new wideband linear group-wise SIC (GSIC) multi-user scheme that is asymptotically equivalent to the block successive over-relaxation (BSOR) iteration, which is known to outperform the conventional block Gauss-Seidel iteration by an order of magnitude in terms of convergence speed, is proposed. The proposed scheme uses directly the spreading codes and doesn’t require the calculation of the cross-correlation matrix which results in a considerable reduction in computational complexity. Hence it is suitable for long-code CDMA systems such as IS-95 and UMTS where the cross-correlation matrix is changing every symbol. We determine the condition of convergence of the proposed scheme and prove that it converges to the decorrelator detector if the over-relaxation factor is within the interval (0, 2). Simulation results are in excellent agreement with theory.

Item Type: Article
Subjects: Electrical
Divisions: College Of Engineering Sciences > Electrical Engineering Dept
Depositing User: ABDELOUAHAB BENTRCIA
Date Deposited: 24 Mar 2008 16:03
Last Modified: 01 Nov 2019 16:25
URI: http://eprints.kfupm.edu.sa/id/eprint/708