Title :
Optimization of linear iterative interference-cancellation receivers for CDMA communications
Author :
Albeanu, Nick ; Lim, Teng Joon
Author_Institution :
Celestica Int. Inc., Toronto, Ont., Canada
fDate :
3/1/2004 12:00:00 AM
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;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2004.823584
