Linear interference cancellation of asynchronous CDMA systems by preconditioned CG method

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)51-62
Journal / PublicationWireless Personal Communications
Volume31
Issue number1-2
Publication statusPublished - Oct 2004

Abstract

It is well known that the iterative method is used for solving a set of linear equations corresponding to linear interference cancellation structures. An ideal computation of the decorrelating or the linear minimum mean-squared-error (LMMSE) detector requires order K3 flops, where K is the number of users. To alleviate the computational complexity, iterative decorrelating and the LMMSE detectors are proposed. In this paper, the symmetric successive over relaxation (SSOR) preconditioning scheme is applied to the conjugate gradient (CG) method. The performance of the detectors is investigated and it is found that the SSOR preconditioned CG (PCG) method can provide significantly faster convergence than CG method.

Research Area(s)

  • Code-division multiple access, Interference cancellation, Iterative methods, Linear multiuser detection

Citation Format(s)

Linear interference cancellation of asynchronous CDMA systems by preconditioned CG method. / Chen, R. S.; Yang, L.; Siu, Y. M.; Zhao, L.; Soo, K. K.

In: Wireless Personal Communications, Vol. 31, No. 1-2, 10.2004, p. 51-62.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review