Optimization of linear iterative interference-cancellation receivers for CDMA communications

Author

Albeanu, Nick ; Lim, Teng Joon

Author_Institution

Celestica Int. Inc., Toronto, Ont., Canada

Volume

52

Issue

3

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

376

Lastpage

379

Abstract

Iterative methods to solve a linear equation system can be used to derive multistage interference cancellers (ICs) that converge to the decorrelating or the minimum mean-square error linear detectors. The link between linear multistage IC and iterative solution methods is well known; however, the parameters needed for fastest convergence are functions of the eigenvalues of the channel matrix. In this letter, we propose new methods for finding optimal parameters without eigendecomposition.

Keywords

code division multiple access; eigenvalues and eigenfunctions; interference suppression; iterative methods; least mean squares methods; matrix algebra; multiuser detection; optimisation; radio receivers; radiofrequency interference; telecommunication channels; CDMA communications; channel matrix; code division multiple access; eigendecomposition; eigenvalues; iterative solution method; linear equation systems; linear iterative interference cancellation receivers; minimum-mean square error linear detector; multistage interference canceller; multiuser detection; Convergence; Covariance matrix; Decorrelation; Detectors; Eigenvalues and eigenfunctions; Equations; Interference cancellation; Iterative methods; Multiaccess communication; Multiuser detection;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2004.823584

Filename

1273688